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1. BB Modet G Link 106 Node Info Channel 1 Camel 2 Chanel 3 Camel 4 ends S Base RSSI Node RSSI Oon 1945 mg Bm 55 Bm es 7 j SIN 2419 43600 Sampie Rate sizz Um oem To 14 Memory futi Tener Tick 32613 Cc Lost 5 9 Node 31463 Sync PI m Mong Ml Modet V Link 4 i Node 31463 32287 28 26 18 342 24 dam Bem AM Options LARS Sample Rate xe j S N 2433 31463 I Total Samples 2035 1 Firmware 818 Tener Tk 2034 b WE Memory Fulk 0 ERS wit de Num Triggers 0 N Succese Zz Figure 81 Synchronized Sampling Data View a Device status Node sampling mode and gateway status are displayed in parenthesis next to the device name b Node information includes node serial number and sampling statistics Right click on the node name for more menu options such as Stop Nodes c Data display of the sampled data with each channel in a column d Radio strength indicates how good the communication is between the gateway and node See Range Test on page 49 e Data file the location and size of the data file as data is added View the data in CSV format with the Open File button f View menu select between Data Grid and Graph views g End sampling the red X is used to exit the sampling window and or end sampling See Ending Sampling Sessions on page 102 Z LORD MicroStrain SENSING SYSTEMS Node Commander Software User Manual Data Acquisition Use the view menu to select the Graph view of
2. sanis Close Sampled Data Window TO There are currently nodes being monitored If you close this window the data will no longer continue to be saved Do you want to Exit and Stop all the nodes or Exit and allow the nodes to continue sampling Bit Nodes Continue Came Closing attempt to stop the remaining nodes Cancel Stop Node Figure 93 Stop Nodes or Continue Sampling Za LORD MicroStrain 102 SENSING SYSTEMS Node Commander Software User Manual Data Acquisition 2 Stop the nodes during sampling In modes with data grid and graph views right click in the data sampling window or on the node name to display a menu with the Stop All Nodes or Stop Streaming command In datalogging mode there is a Stop Broadcast button This ends all data acquisition Figure 94 Stop All Nodes 3 Use the Stop Node command If the node is sampling without an active view of the data acquisition right click on the node name in the Controller window and select Stop Node to end sampling This ends data acquisition for the selected node Node 30252 LDC Stop Node Ping Remove Node de Num Triggers 14 AJ Node 31463 Figure 95 Stop Single Node wa LORD MicroStrain 108 SENSING SYSTEMS Node Commander Software User Manual Data Acquisition 10 6 Monitor Mode Monitor Mode is used to observe any sampling activity that is occurring on nodes connected to a partic
3. 20555 Figure 2 User Interface Windows can be repositioned by selecting the window header bar and dragging and dropping it in the desired location Outline guides will appear when the item is dragged to a new position Windows can also be closed or minimized with the icons in the upper right corners or with the header row View menu The header row can be repositioned in the same way but cannot be closed In all menus only the commands that are currently available are selectable They are shown in color and will appear highlighted when hovered over Some icons and selections will display feature or device details as well Features that are not available will be gray Available Za LORD MicroStrain 9 SENSING SYSTEMS Node Commander Software User Manual Software Overview commands are dependent on what devices are connected and what tasks the software and system are currently executing e CONTROLLER INFORMATION WINDOW The Controller information window displays a list of all attached or previously attached devices The devices are organized in a hierarchical tree and display the gateways and corresponding node names and addresses Additional node information can be viewed by selecting the symbol next to the node name Inactive devices can be removed from the list through the device menu e HEADER ROW MENUS includes the program level commands in Node Commander such as file management and view settings e DEVICE MENUS
4. Configuration Node 31463 ea Ser Sao fengin on uv gag rone aF a aag Show Advanced Options Sampling Settings 8 Acton ICT RN Unlimited Sample Duration Kromat Time Duration 62500 sec Figure 75 Low Duty Cycle Settings Za LORD MicroStrain 85 SENSING SYSTEMS Node Commander Software User Manual Sampling Modes and Settings 9 4 Datalogging In datalogging mode sampled readings are stored in the node memory instead of being transmitted to the gateway during sampling The sample rate is adjustable and sampling can be set to repeat for a fixed interval of time after the sampling has been started or continuously until a stop command is sent If the node is set to sample continuously it will do so until the node memory is full The data is not transmitted to the gateway until the download command is initiated from the gateway menu In datalogging mode the time stamp in is set by the host computer when the sampling is started Multiple nodes can be triggered to start data logging at the same time See Armed Datalogging on page 98 To adjust datalogging settings open the node configuration menu by right clicking on the node name and then selecting Configure Configure Node Select the Datalogging tab Configuration Node 31463 chanel Steaming Syctronzed amping Lon Duty Gye Datalogging p Pd samat Ga 7 Continuous Datalogging Datalogging Settings
5. Synchronized Sampling the only mode that uses the lossless data protocol and has the most accurate time stamping scheme Includes burst and event based sampling features datalogging and adjustable sample rates and duration It also coordinates node networks to eliminate data collisions and guarantees node sampling within 32 microseconds of each other There is some latency between sampling and data viewing Low Duty Cycle used for low frequency sampling over long durations Features included configurable sample rate and duration event based sampling datalogging and time stamping Datalogging saves data to internal node memory for user retrieval Features include adjustable sample rates duration multiple node triggering and time stamping Sampling settings are accessed through the Configure Node menu There is a tab for each sampling mode Percent of Total Bandwidth 25 02 Event Driven Sampling Enable c Figure 71 Sample Settings Menu Za LORD MicroStrain 80 SENSING SYSTEMS Node Commander Software User Manual Sampling Modes and Settings Sampling Mode Feature Setting sample rate each active channel e automatic e node dependent user selectable or continuous standard sample rate each active channel e node dependent user selectable e node and sample rate dependent user selectable burst sampling rate each e node dependent user selectable e node and sample rate dependent
6. e Network Bandwidth the total bandwidth used by all the nodes See Bandwidth and Sample Rate on page 88 for more information f Enable Beacon on Start This setting is used in conjunction with or as an alternate to enabling the beacon in the gateway menu see Using the Beacon on page 84 Enabling the beacon on start will begin sampling on all nodes immediately instead of waiting for the beacon from the gateway which is on a fixed interval and may be delayed Enabling the beacon on start can also be used instead of the gateway enable for scenarios in which a continuous beacon is not desired such as when the beacon is being received from another source g Apply settings and start sampling before acquisition can begin use the Apply Network Settings to save the session settings to the node When completed select Za LORD MicroStrain 92 SENSING SYSTEMS Node Commander Software User Manual Data Acquisition Start Sampling to begin h Close sampling window with the red X to exit sampling or once the sampling has been started to view the data window behind it Syncronized sampling features two data views a grid view anda graph view Once sampling is started the data grid view is the default view lt c P View Mode Data Grid Saving To C ProgranD sta MicioStiariNodeCommanderData Sampled Data senson 02 18 2014 113 52 271Magggy ODEO IPIS SIN Cry d f pen Fie Sze 183M8 N a RR AP
7. File Edit View Jools Help fX Open Print Burn Organize New folder Name Fr Favorites pgs BE Desktop J Downloads 14 Recent Places 454 Master 09 30 2013 T19 46 08 csv Node372 csv i Sensorinfo 09 30 2013 T19 46 08 csv 3 Ei SyncNetworkinfo_09 30 2013 T19 46 08 5 J Libraries 4 Documents a Music im Pictures H videos 1v Computer amp Local Disk C Figure 14 Exploring Data 22 Z LORD MicroStrain SENSING SYSTEMS Node Commander Software User Manual Gateway Communication 4 Gateway Communication When a gateway is communicating with the host computer it will appear on a list in the Controller window with a name that includes the communications port it is configured for and an icon symbolizing the type of communication interface Node Commander remembers gateways and nodes that have been communicated with previously They will appear on the list when the software is started however the name and icon will be grayed out if the device is not currently communicating To remove a gateway that is no longer used select Remove Base Station from the gateway menu Right clicking on the gateway name will produce a list of menu options available for the gateway Figure 15 Gateway Communication shows a USB gateway that is communicating on Com Port 3 with the corresponding menu and a serial gateway that is not connected with the corresponding menu Wi Node Commander a A EET 5
8. LORD USER MANUAL Node Commander Wireless Sensor Network Software Suite Node Commander 2 10 0 Live Connect 2 1 3 wa LORD MicroStrain SENSING SYSTEMS Za LORD MicroStrain SENSING SYSTEMS 2014 LORD Corporation MicroStrain Sensing Systems 459 Hurricane Lane Suite 102 Williston VT 05495 United States of America Phone 802 862 6629 Toll Free 800 449 3878 Fax 802 863 4093 http www microstrain com sensing supporte LORD com sensing sales LORD com Copyright 2014 LORD Corporation IEPE Link Torque Link 3DM RQ1 Strain Wizard DEMOD DC DVRT DVRT Link WSDA HS Link TC Link G Link V Link SG Link ENV Link Watt Link Shock Link LXRS Node Commander SensorCloud Live Connect MathEngine EH Link 3DM FAS A 3DM GX19 3DM GX3 3DM GX4 3DM DH 3DM DH3 EmbedSense MicroStrain and Little Sensors Big Ideas 9 are trademarks of LORD Corporation Document 8500 0038 Revision A Subject to change without notice Node Commander Software User Manual Table of Contents 1 Wireless Sensor Network Overview 0 00 00 00 0 aaa 7 2 Software Overview ua 8 2 1 Navigation and Views 2 2 2 20 o cece ccc cece cece cece cece esee se se se se se se rele ese se sese 9 2 2 Software Installation 2 wawa banana Ga a LALA kana aa La a a 11 2 9 Software Preferences 9 cpus oco tiie kaa na sagana la ta aga aan kala nag ana
9. 0 to 6 554e 004 bits Figure 62 Channel Settings 4 Right click on the Node heading and then Sample Stream Start amp Base Station Com 3 QD Node 30252 Synchronized Sampling Low Duty Cycle Datalogging Figure 63 Start Node Streaming va LORD MicroStrain a SENSING SYSTEMS Node Commander Software User Manual Sensor Settings 5 The streaming graph shows the bit output of the channel 6 Usinga calibrated tool or some other way of applying and measuring a known load apply loads to the sensor at a number of intervals over the expected range of use At each of the calibration intervals record the applied force and the corresponding sweep value on the Y axis of the graph the A D value output of the sensor a Zoomin and out on the graph by un checking the Auto Y Axis Zoom box and then right clicking on the graph and selecting Zoom In Draw a box around the area to zoom in on b Adjust the X Axis Width from the field next to the Y Axis Zoom c Endsampling by clicking the red X box on the Streamin Graph tab na 20 4 2180 2 94 nag 20 104 mag i i eae ER Y Figure 64 Node Sampling va LORD MicroStrain SENSING SYSTEMS 71 Node Commander Software User Manual Sensor Settings 7 After making all measurements calculate a slope from the data using the formula y mx bin a data analysis program such as Microsoft Excel See Calculating a Linear Slope on page 63 8
10. 1 Open the Node Commander software Ba HAN LI Node Commander 2 See System Connections on page 13 Make all hardware connections Power is applied to the gateway through the USB connection Verify the gateway status indicator is illuminated 3 Open Node Commander 4 When connected the gateway should appear in the Controller window automatically with a communication port assignment If it is not automatically discovered verify the port is active saiyo f amp Base Station Com 3 Figure 19 USB Gateway Communication wa LORD MicroStrain 26 SENSING SYSTEMS Node Commander Software User Manual Gateway Communication 4 3 Gateway Ethernet Communications The default setting of the Ethernet gateway is for DHCP enabled network communications In order to configure the gateway for other network schemes communication must be established in this way first The following are the primary ways the Ethernet gateway can be configured for Ethernet communication e Automatically through a DHCP enabled network e Byassigning the gateway a static IP address and connecting it directly to a host computer e Byassigning the gateway a static IP address and connecting it to a similarly configured network e Byconnecting remotely through the SensorCloud web interface All options require connecting to the gateway through the Live Connect software interface Live Connect is essentially a TCP IP to serial conversion
11. 168 167 116 5000 Figure 20 Live Connect Interface 4 Open Node Commander 5 The gateway will appear in the Controller window automatically with a communication port assignment a WSDA Com1 Figure 21 Ethernet Gateway Communication Za LORD MicroStrain 28 SENSING SYSTEMS Node Commander Software User Manual Gateway Communication 4 4 Verify Gateway Communication The Verify and Reverify Base Station commands can be used to check the communication status of the gateway to the host computer The Verify command is available in the gateway menu when no communication has been previously established The Reverify command is in the gateway menu if communication has already be established and is used to check the current status Right click on the gateway name and select the command The Action Log will report the results of the gateway query Figure 22 Verify Gateway Communication 4 5 Removing a Gateway To remove a gateway that is no longer used right click on the gateway name in the Controller window and select Remove Base Station from the gateway menu Verify Base Station Remove Base Station Figure 23 Removing Gateways Za LORD MicroStrain 29 SENSING SYSTEMS Node Commander Software User Manual Gateway Settings 5 Gateway Settings 5 1 Gateway Information Gateway information such as the model type serial number radio type operating frequency current communications port an
12. 9 6 Bandwidth and Sample Rate 2 2 0 0 ese sse esses sese li 88 97 Time Stamping ccce Ba ele Ba LE DL D LL GIRL ee LU GG 88 10 Data Acquisition 2 e se se se se s ee se se lesse selle 89 10 1 Streaming Data APA 90 10 2 Synchronized Sampling 0 0 0 20 oaaao aaoo aaao aaao ec cece cecceccececcecesceceeeecesees 91 10 3 Low Duty Cycle Data Sampling 0 0 0 0 20 c ccc cece cece ccc cece cee ecceceececeececeececeeceee 95 10 4 Armed Datalogging 0 20 c occ eee cece cece e e e ee re e sse se se se se lesus 98 10 5 Ending Sampling Sessions eee eme emere nene 102 10 6 Monitor Mode AA eee uh ede AA NA AA 104 10 7 Viewing Sensor Data u ese esee ess re sn eres prese sees 105 TL OGD ole SAL Na DOG AGNO CIL E m E ee nA BONG a 106 4 LORD MicroStrain SENSING SYSTEMS Node Commander Software User Manual 11 1 Troubleshooting Guide ccc ese tiec cohaccsctseseciiawesadogecabidaceddssdnwesdegveddaiieeseabcanead 106 11 2 Communications Ports in Windows sese en eei 111 11 3 Live Connect Interfabe eii iioc a Aa aa LO kn a 113 11 4 Software Specifications cece cece cece cece ese eese eese re eres eril 113 11 5 Technical Support RERO E e 114 11 6 Warranty Information a es Rs messe essem esse e lere lee 115 y mak a AA 116 12 References T anap aata D UE EM Ona AO D M NAA E CUAL 117 12 1 Related Documents
13. Time Duration 0 195313 sec Figure 76 Datalogging Settings Za LORD MicroStrain 86 SENSING SYSTEMS Node Commander Software User Manual Sampling Modes and Settings 9 5 Event Driven Sampling Event driven sampling is available in both the low duty cycle and synchronized sampling modes In either mode the node is still taking continuous measurements based on the sample rate and duration settings however it only reports the measurement that meet the event criteria The node can be configured to also transmit the data just before and just after the event The pre and post event duration settings define the window of time before and after the event that will be reported The event triggers are set for each channel in the form of a voltage threshold The trigger occurs when the channel reading is either above or below the threshold depending on the trigger operation settling The event driven sampling menus are accessed through the node configuration menu Right click on the node name and then select Configure Configure Node Select the desired sampling mode synchronized sampling or low duty cycle and then select the Event Driven Sampling check box or the Configure button if the check box is already selected The Configure Event Driven Sampling menu will appear Configure Event Driven i de ommurecate Total Duration 3 out of 2200 seconds Pre event duration 23 second
14. gi Eo Yar beino Help Monitor Mode Reverify Base Station Add Nodes Configure Verify Base Station Remove Base Station Beacon Network Broadcast Remove Base Station gateway communicating gateway not connected Figure 15 Gateway Communication Some gateways will reconnect automatically when plugged into the host computer while others must be prompted to look for attached devices To re establish communication with a gateway on the list select Verify Base Station from the gateway menu The Action Log window will display a report on the success of the command To establish communication with a new device or if the Verify Base Station command is unsuccessful refer to the following section that corresponds with the gateway communication appropriate for the model of gateway being used Za LORD MicroStrain 23 SENSING SYSTEMS Node Commander Software User Manual Gateway Communication 4 1 Gateway Serial Communication 1 See See System Connections on page 13 Make all hardware connections and power on the gateway Verify the gateway status indicator shows that it is on RS232 converter may be used Install the converter drivers as directed by the l l i If using a serial gateway and the computer does not have a serial port a USB to l l manufacturer and set the converter to match the gateway port settings l 1 Open the Node Commander software BANC PE Node Commander 2 Right click a
15. lt gt Storage controllers 88 System devices Universal Serial Bus controllers Figure 99 Windows Device Manger Menu 4 To view the port settings select the device right click on it and select Properties Table 8 Serial Port Settings describes the settings for serial communication The baud rate for the RS232 gateway can be adjusted in Node Commander only Changing it in the Windows port settings menu will not work See Setting the Serial Baud Rate on page 33 USB gateways run only at 921 600 baud Port Setting Value 115 200 RS232 gateways or Baud Rate 921 600 Data Bits es Stop Bits ot 7 for RS232 gateways see Setting the Serial Baud Rate on page 33 Table 8 Serial Port Settings va LORD MicroStrain ng SENSING SYSTEMS Node Commander Software User Manual 11 3 Live Connect Interface Live Connect is a bridge between Node Commander Ethernet connectivity and web based applications See Gateway Ethernet Communications on page 27 for information on connecting to the Ethernet gateway in Node Commander Live Connect also provides an interface to the LORD MicroStrain web based data aggregation and data visualization software SensorCloud Data files created in Node Commander can be uploaded to SensorCloud through the Node Commander File menu 11 4 Software Specifications Parameter Specification Software Name Node Commander and Live Connect Operating Syste
16. the linear ratio xis the A D value at a given point and bis the fixed zero load offset of the sensor Slope the ratio of A D value bits to engineering units EU that is used to convert the sensor measurements or bits per EU The slope conversion value will vary depending on the engineering units desired For example if the units are a measurement of force in pounds the desire slope conversion would describe how many bits equal one pound bits pound Mathematically the slope is min the formula y mx b Za LORD MicroStrain 60 SENSING SYSTEMS Node Commander Software User Manual Sensor Settings Offset The offset value is the starting output value of the sensor with no load applied Mathematically the offset is bin the formula y mx b Effective Range Once the formula slope and offset values are applied the sensor measurement range in engineering units is calculated This is the effective range and is based on the resolution of the node For example a 16 bit node will have 65536 A D values and a 12 bit node will have 4096 A D values The number of A D values per EU slope multiplied by the total number of A D values minus the offset determines the effective EU range of the sensor The effective range does not take gain or offset scale into consideration Input Range Gain sets the amplification of the signal within the node This feature is only available for channels with differential inputs and gain amplifiers Of
17. 7000 8000 000 Sweep Number Tukaan Zoom H gt ato Xd Wide 10000 gt Figure 78 Streaming Data Graph a Node information displays the node serial number frequency and communications port b Axis range select the X axis width and Y axis zoom percentage or used the Auto check box for automatic scaling c Graph the node graph shows the sampled data Each active channel is displayed as a different color The X axis is time in seconds and the Y axis in the A D value bits Right click on the graph for additional menu options such as show key pan zoom and stop streaming d End sampling the red X is used to exit the sampling window and or end sampling See Ending Sampling Sessions on page 102 Za LORD MicroStrain 90 SENSING SYSTEMS Node Commander Software User Manual Data Acquisition 10 2 Synchronized Sampling To start a sampling session nodes can be selected individually or as a group When selected as a group they will all be set to the same sampling mode Right click on the node or group of node names and select Sample The menus are different depending on which method is selected Ke Base Station Com 3 9 5 89 Nodezls Sample Communicate amp Base Station Com 3 2 9 mem svi gt Synchronized Sampling Low Duty Cycle Trigger Datalogging Download Triggers Figure 79 Starting a Sampling Session When a synchronized sampling session is started the sampling menu appears and i
18. Management b Remove Node Figure 44 Range Test Menu 2 The total RSSI range for the node and gateway is 90 to OdBm The higher the value closer to zero the better but reliable communication can be achieved between 0 and 75dBm The devices may still communicate between 75 and 90dBm but it could be intermittent or result in data loss Position the node where the best RSSI value is observed ShortPacket Range Test Node 31463 Good Pings 9070 BadPings 0 Success Rate 100 00 96 Base RSSI 12 dBm Min 12dBm Max 10 dBm T Node RSSI 12 dBm Min 12 dBm Max 10 dBm c Figure 45 Range Test Statistics Za LORD MicroStrain 49 SENSING SYSTEMS Node Commander Software User Manual Node Settings 7 5 Channel Configuration Node channels are configured for the sensor that is connected to it These setting are stored in the node memory for that channel Only the channels and configuration options that are available on the type of node being used will be available in the configuration menus 1 Toenter the configuration menu right click on the node name and select Configure Configure Node The Channels tab displays channel options available for the current node a Channel Enabled indicates the channel number and the check box is used to enable the channel and select it for sampling The icon next to the check box describes the channel type which is intrinsic to the node being used In the fo
19. Return to the Node Configuration screen for the sensor channel and select the desired Conversion Class and Units and enter the slope and offset values derived in the data analysis program Configuration Channel 1 input signal PGA Settings Hardware Gain 210 Hardware Offset 50 Auto Balance High Mdscale Low Bits to Lbf Slope 0 1389 Offset 282 55 Conversion Formula outputeslope bits offset Effective Range 282 5 to 286 4Lbf Figure 65 Enter Calibration Values 9 Save the values and exit configuration This is the end of a lab calibration 10 For field calibrations begin node data streaming again with no load on the sensor 11 Observe the value in the stream graph If the stream is not at zero return to the channel configuration menu and adjust the Offset by increasing or decreasing the value 12 Once the offset has been zeroed verify the calibration by applying known loads to the sensor throughout the range and observing output in engineering units va LORD MicroStrain E SENSING SYSTEMS Node Commander Software User Manual Sensor Settings 8 3 2 EXAMPLE Internal Shunt Calibration NODE V Link LXRS 16 bit 65536 A D values CHANNEL TYPE differential analog input O to SVDC input range SENSOR TYPE strain gauge Wheatstone Bridge full bridge configuration SENSOR PARAMETERS application voltage range 2mV This is the expected output voltage of the strain gauge
20. Values Includes the slope offset scale and formula used to convert the sensor reading to engineering units The slope and offset can be determined from the sensor manufacturer calibration data or through a calibration process aap ada T FEER Input Amplified Samples Wireless Samples c signal signa bits Communication bits Units o oe d PGA Settings input range Cass Samo chamai Hardware Offset 47k Units Strain gt Stran wizard A D Value bits Click Strain Wizard to run the Strain Wizard Calibrated Value Bits to uStrain JR 0 e Slope Offset Conversion Formula output slope bits offset Effective Range 0 to 4095 pStrain Figure 47 Channel Setup Z LORD MicroStrain si SENSING SYSTEMS Node Commander Software User Manual Node Settings 7 6 Node Boot Modes Nodes can be configured to boot up in several different ways depending on the application requirements Table 3 Node Boot Modes For sample on boot up modes the node will sample according to the sampling settings configured for the node This means it may either boot up and sample continuously or boot up sample for a fixed interval and then go into idle state Setting the node up for different modes will effect the way communication can be established with the node See Node Communication on page 35 e Ifthe node is sampling or sleeping on bo
21. X Auto ViAuto XAws Width 1000 lll Options LXRS Node 30252 Mies S N 2419 43690 Node 31463 nnmnr CA Firmware 805 SE we 4 JUTU Memory Ful 1 300004 dq Num Triggers 14 5 19 Node 31463 LDC a WB Model V Link 28000 AM Options LXRS j SIN 2433 31463 View Mode Graph Saving To CPiogramData N 2 Memory Fulk 0 4c Num Triggers 0 i 500 Timer Ticks Figure 85 Low Duty Cycle Graph View a Available nodes Click on the node to display the graph for that node Click again to hide it Right click on the node name for more menu options such as stop nodes and save stream b Axis range Select the X axis width and Y axis zoom percentage or used the Auto check box for automatic scaling c Graph The node graph shows the sampled data Each active channel is displayed as a different color The X axis is time in seconds and the Y axis in the A D value bits Right click on the graph for additional menu options such as View Graph Key Pan Zoom Pause and Remove Graph d View menu Select between Data Grid and Graph views e Data file The location and size of the data file as data is added View the data in CSV format with the Open File button f End sampling The red X is used to exit the sampling window and or end sampling See Ending Sampling Sessions on page 102 va LORD MicroStrain i SENSING SYSTEMS Node Commander Software User Manual Data Acquisition 10 4 Arme
22. and data logging schemes Other settings are automatic depending on the number of active channels and other variables In general when determining what sample mode and rate is most suitable for the application consider the following e Increasing the sample rate reduces the system bandwidth and therefore the number of nodes that can be reporting simultaneously e Increasing the sample rate increases the duration the node is on over time and therefore reduces battery life e Some sampling modes such as Streaming which is continuously recording data will use more bandwidth and battery power than fixed interval or event based polling modes such as Low Duty Cycle and Event Triggered Sampling settings are accessed through the Configure Node menu There is a tab for each sampling mode Communicate e x m cam e IA Time Duration 0 195313 sec Percent of Total Bandwidth 25 02 Event Driven Sampling Enable Configure Figure 10 Sample Settings Menu Z LORD MicroStrain i SENSING SYSTEMS Node Commander Software User Manual Quick Start Setup and Operation 3 6 Data Acquisition while acquiring sensor data may induce noise on sensitive sensor signals and I I I I I I l I i i Touching connected sensors and test boards or charging the node battery I I I I l I is not recommended I I I I When data acquisition is started each of the four sampling modes has diffe
23. command is sent to the node Node 31463 Note to log with Trigger Depending on datalogging settings for each node data acquisition may take longer to complete on some nodes than others The Close button can be used to close the datalogging window without stopping the data acquisition The Close Selected or Broadcast Stop All buttons are used to stop data acquisition on one or all nodes Z4 LORD MicroStrain i SENSING SYSTEMS Node Commander Software User Manual Data Acquisition 6 Once the datalogging menu is closed the nodes that have acquired data will automatically display the node information in the Controller window The Memory Percent Full indicates the percentage of memory that has been used for datalogging Number of Triggers indicates how many datalogging files have been created Ke Base Station Com 3 maid Node 30252 IBI Model G Link10G Ali Options LXRS g S N 2419 43690 Pai qf Memory Full 1 Ad Num Triggers 14 Node3l4t3 IE Model V Link g S N 2433 31463 GB 1 Memory Full 56 1 Nocaf Num Triggers 56 P dli ES Figure 88 Node Memory Statistics 7 To download the datalogging files off of the node onto the host computer right click on a node name or group of nodes and select either Sample Datalogging Download or Sample Download Triggers 8 Inthe Download Triggers menu select the node or nodes and the Start Download button Figure 8
24. device in an embedded system that includes device operation commands conditions memory allocation and many other tasks Gateway The gateway is a transceiver that attaches to the host computer and provides communication between the software and the node s It is also known as a base station Host computer The host computer is the computer that orchestrates command and control of attached devices or networks LED Light Emitting Diode is an indicator light that is used in electronic equipment LOS Line of Sight is an acronym used in radio communications that describes the ideal condition between transmitting and receiving antennas in a radio network As stated it means they are in view of each other with no obstructions LXRS Lossless Extended Range Synchronized is the LORD MicroStrain data communications protocol used in the wireless sensor network NIST National Institute of Standards and Testing is a nationally accepted organization for testing and calibration of technological devices Node The node is the wireless transceiver that the sensor s are connected to providing communication with the gateway The G Link LXRS V Link LXRS and SG Link LXRS are all nodes made by LORD MicroStrain Node Tester board The Node Tester board is a device designed by LORD MicroStrain that can be plugged into nodes to test functionality Offset When describing a mathematically linear relationship the offse
25. eeeeeeeeeeeeeeees 32 5 4 Setting the Serial Baud Rate e cee ccc eceececcececeececcececeeceees 33 5 5 Analog Gateway Configuration o eee cece cece cece cence nce e eee ec roria rrain 34 6 Node Communication eect eee eeeeeees 35 6 1 Automatic Node Discovery 0 0 000 c cece cece cece ccc cece cece se se e sse se se se se sess e li 37 6 2 Manually Adding Nodes 0 00 00 eee 0 esse se se se se se se sese eese e lerne 39 6 3 Scanning for Nodes by Address see e ese sese eIes 40 6 4 Verifying Node Communication se ese esses esse sessiles 41 6 5 Reestablishing Communication Ja 41 6 6 Network Broadcast gana aanak agata Naa Aa adu UM V ec E NR CR A UR LLL Ba 42 6 7 Removing Nodes eese sese se se se se Ie re se eee serre lerne 43 7 Node Selungs ecce rep E pn POI pe DPPDI PU UN do a aaao llteperie v eb aaa ipei el 44 7 1 Node AR PAP 44 7 2 Node Power Management 2 0 0 esse see e s se ee le le le serere 45 7 3 Transmit Frequency se se se se messe ee se ee ee eere se selle 47 7 4 Namo Nana Gagana due LU eph LARA LAND ana nga E E no bA Ga eal MILLS 48 741 Range Test 49 7 5 Channel Configuration ac cede ka nala kawad kaba aa GL KRa had Ga digas give bp hahhah qM Ra bn de R ERE 50 7 6 Node Boot MOUBS encore LOAN cc DAA An iOS ALALOG NGO duci ul esc abeteeetic iP oen n nee S LA C ete ncc S DL Canaa
26. exit the sampling window and or end sampling See Ending Sampling Sessions on page 102 va LORD MicroStrain P SENSING SYSTEMS Node Commander Software User Manual Data Acquisition 10 3 Low Duty Cycle Data Sampling To start a sampling session nodes can be selected individually or as a group When selected as a group they will all be set to the same sampling mode Right click on the node or group of node names and select Sample The menus are different depending on which method is selected Ke Base Station Com 3 oy 5 89 Nodezls Sample Figure 83 Starting a Sampling Session Low Duty Cycle sampling features two data views a grid view and a graph view The data grid View is the default view when sampling is started Figure 84 Low Duty Cycle Data Grid View shows the indicators and options in the grid view Za LORD MicroStrain 95 SENSING SYSTEMS Node Commander Software User Manual Data Acquisition Ke Base Station Com 3 Monitoring View Mode DataGrid gt Saving To C ProgamData MicroStiain NodeCommander D ata Sampled Data session 02 19 2014 T18_30_47 Master_02 19 2014 T18_30_4 d Open Fie Size 1 47 M S Node 30252 LDC Datei m 4 eae a d Modet G Link 196 Node Info Channel 1 Channel 2 Channel 3 Channel 4 Channel 5 Base RSSI NodeRSSL Ny Sion Dis Node 31463 32287 z E E 32 N 022m aan g g SIN 2419 43690 Sample Rate 3a A Firmware 8 05 Total Samples 6983 WE Memory Ful 1 Tim
27. frequency This will occur within a few seconds 3 When the device status indicator on the node ends the rapid flash sequence and begins pulsing at one second intervals it has completed the normal boot up sequence and is running in idle mode At this point the node should be listed in the Controller window and scanning can be stopped by selecting the Stop button in the Node wa LORD MicroStrain 15 SENSING SYSTEMS Node Commander Software User Manual Quick Start Setup and Operation Discovery window Additional node information can be viewed by selecting the symbol next to the node name Please cycle the power on all nodes you d like Node Commander to find Discovered nodes will show up under Base Station Com 3 Click the stop button to leave node discovery mode E Find sampling nodes on frequency 23 e Jj Steg Figure 7 Node Discovery va LORD MicroStrain iB SENSING SYSTEMS Node Commander Software User Manual Quick Start Setup and Operation 3 4 Channel Configuration Node channels are configured for the sensor that is connected to it These setting are stored in the node memory for that channel Only the channels and configuration options that are available on the type of node being used will be available in the configuration menus 1 Toenter the configuration menu right click on the node name and select Configure Configure Node The Channels tab displays channel options available for
28. how it is set up for data acquisition It includes settings such as sampling mode and rate number of active channels channel measurement settings offsets hardware gain and calibration values Coordinated Universal Time UTC the primary time standard for world clocks and time It is similar to Greenwich Mean Time GMT Cycle Power a command transmitted to the node to re boot the node either through a hardware or software switch Data Acquisition the process of collecting data from sensors and other devices Data Logging the process of saving acquired data to the system memory either locally on the node or remotely on the host computer DHCP network Dynamic Host Configuration Protocol is the standardized networking protocol used on Internet Protocol IP networks which automatically configures devices that are attached to it by assigning and configuring the device IP address Differential signal is a method of transmitting electrical signals in which they are paired together as a differential pair and measured with reference to each other only This method makes the pair less susceptible to electrical noise Za LORD MicroStrain 118 SENSING SYSTEMS Node Commander Software User Manual References EMI Electromagnetic Interference is inductive or radiated disturbance that can create signal degradation on electrical signals including loss of data Firmware the code that is programmed onto a microcontroller or similar
29. is Control Pane Fore View basic information about your computer Mm ER y Device Manager Windows edition i j Remote settings Windows 7 Professional System protection Copyright 2009 Microsoft Corporation All rights reserved Advanced system settings Service Pack1 Get more features with a new edition of Windows 7 Figure 98 Windows System Menu Za LORD MicroStrain 111 SENSING SYSTEMS Node Commander Software User Manual Support 3 In Device Manager expand the view for Ports COM and LPT Active COM ports will appear on this list with the COM port number A USB gateway will be displayed as USB to UART Bridge COM X A serial gateway will be attached to the Communications Port COM X If no port is listed the port is not recognized by the computer and no gateway communication can be established Ea Device Manager aatacafisaimczil Leni Jm Sa File Action View Help 9 mitii m e 4 WSTDAE J0RCDX MP Batteries Q Bluetooth Radios 1M Computer Custom USB Devices cs Disk drives E Display adapters e9 DVD CD ROM drives QR Human Interface Devices Cg IDE ATA ATAPI controllers Keyboards Network adapters Sp Other devices a07 Ports COM amp LPT TP Communicat tions Port COMI RS232 gateway USB gateways MF Silicon Labs CP210x USB to UART Bridge COM5 TP Silicon Labs CP210x USB to UART Bridge COM7 BB Processors Sound video and game controllers
30. load is applied or measured by a calibrated reference device The known load value from the calibrated device is then plotted against the measured output of the sensor to determine the calibration slope and offset In Node Commander 9 this can be accomplished by taking sensor readings while applying the known loads Sensor wiring tolerances in system electronics and differences in mounting techniques are examples of systemic variables that can influence the sensor readings Sensors that are making small measurements or are otherwise sensitive to these slight differences may benefit from a system calibration The following techniques are system calibrations e System shunt calibration internal and external This option is only available for Wheatstone bridge type sensors such as strain gauges and utilizes a calibration wizard in Node Commander In the shunt calibration process an internal or external precision resistor is used to load part of the sensor bridge while the sensor remains unloaded The bridge output is measured and used as a loaded calibration point for the sensor In addition to the no load value it can be used to derive the calibration slope and offset The internal shunt resistor is suitable for most applications however an external shunt may be beneficial in high gain scenarios wa LORD MicroStrain 67 SENSING SYSTEMS Node Commander Software User Manual Sensor Settings e System field calibration The field calibration
31. modes Node Commander is designed for use with all LORD MicroStrain gateways and nodes and runs on most Windows9 platforms Included with all Node Commander distributions is an auxiliary program called Live Connect Live Connect is used to translate between the Node Commander serial protocol and the TCP IP protocol used for Ethernet gateways 1 D 1 1 1 D 1 1 1 1 150000 151000 152000 153000 154000 155000 156000 157000 158000 159000 Sweep Number Y Axis Zoom 24 Auto V Auto X Axis Width M V Figure 1 Node Commander Software Za LORD MicroStrain 8 SENSING SYSTEMS Node Commander Software User Manual Software Overview 2 1 Navigation and Views The Node Commander user interface includes a status bar an icon toolbar a header row of drop down menus device menus and three main information windows as shown in Figure 2 User Interface When the software is first launched only the Controller and Action Log windows are shown The Sampling windows appear only when sampling is initiated and vary depending on the type of sampling being performed The device menus are accessible only when the devices such as gateways and nodes are connected and communicating with Node Commander They are accessed by right clicking on the device name in the Controller window Header row menus Sampling window example Device menu right click on device name Action Log s z Status bar a M
32. predictable electrical signal as a result Sleep a command transmitted to the node to set a node into sleep configuration Sampling the process of taking measurements from a sensor or device Sampling Mode the type of sampling that is being utilized such as event triggered continuous or periodic The nodes have several sampling modes that employ these types of sampling Sampling Rate the frequency of sampling Single Ended electrical signals that are measured with reference to a system ground Slope When describing a mathematically linear relationship the slope is the steepness of the line that represents that relationship on a graph The equation of a straight line is y mx b where xis the x axis coordinate yis the y axis coordinate mis the slope and bis the offset wa LORD MicroStrain 120 SENSING SYSTEMS Node Commander Software User Manual References Streaming Streaming is a sampling mode in which all active channels and the sensors attached to them are measured and the data acquired is transmitted to the gateway and software The data is not written to non volatile memory during streaming Streaming can either be finite have a user defined start and end time or continuous continue until the power is cycled on the node USB Universal Serial Bus a serial data communications protocol Wheatstone Bridge an electrical circuit used to measure unknown electrical resistances WSN Wireless Sensor Network Za LORD MicroS
33. select Configure Con figure Node from the node menu 2 Selectthe Power tab 3 Selectthe desired boot mode from the drop down menu 4 Select Apply or OK The next time the node is restarted it will boot up in the new mode It must be a full power reset the Cycle Power command in Node Commander will not work for this RF mfo CheckRadio Interval 5s User Inactivity Timeout 7200 sec F Disabled Boot Mode Normal Boot Mode Figure 48 Boot Mode Setting Za LORD MicroStrain 53 SENSING SYSTEMS Node Commander Software User Manual Node Settings 7 7 Applying Node Configuration Node values set in any of the tabs in the node Configure menu are saved to the node using either the OK or Apply buttons The OK button saves and exits the menu while the Apply button writes the values but does not exit the menu allowing additional settings tobe changed Changes must be applied before selecting another tab or they will not be saved EEEOOOO Figure 49 Applying Node Settings va LORD MicroStrain a SENSING SYSTEMS Node Commander Software User Manual Node Settings 7 8 Saving Node Settings The Save Node State feature creates a file to backup all of the node settings including factory and user entered calibration values channel configurations sampling settings and communication settings The settings file contains the unique node address and any app
34. the current node a Channel Enabled indicates the channel number and the check box is used to enable the channel and select it for sampling The icon next to the check box describes the channel type which is intrinsic to the node being used In the following example a1 analog differential channel icon a2 analog single ended channel icon a3 temperature channel icon b Current Channel Configuration The data output units input and label describe how the channel is currently configured c Configure Select the channel Configure button to change the channel parameters The channel must be enabled first by selecting its adjacent check box AP Value AJD Value a1 AP Value A D Value a2 AJD Value APD Value AJD Value Figure 8 Node Channels Menu Za LORD MicroStrain 17 SENSING SYSTEMS Node Commander Software User Manual Quick Start Setup and Operation 2 To enter the channel configuration menu select the channel Configure button as shown in Figure 8 Node Channels Menu The channel must be enabled first by selecting its adjacent check box The channel configuration menu options change depending on the sensor type selected Below is a description of possible settings a Channel Label names the channel b Channel Diagram describes the channel electronics and data flow c Conversion Coefficients defines the type and units of the measu
35. tool that translates the communications between Node Commander and the Ethernet gateway The Live Connect interface is described in the following section 4 3 1 Connecting to a DHCP Network with Live Connect 1 Connect the host computer and gateway to the DHCP network and apply power to the gateway Verify the gateway status indicator shows that it is on and has completed the boot up process 2 Open Live Connect The gateway will be detected automatically but depending on the network it may take 2 to 3 minutes Once detected the gateway will appear on the list of discovered devices and can be identified by its serial number in the Device Name column Figure 20 Live Connect Interface 3 When the gateway appears on the list highlight it and click the Connect button The Status column will indicate when communication has been established and if so the Port column will display the communications port All active gateways on the network will be displayed and can be connected to in this manner Z LORD MicroStrain zi SENSING SYSTEMS Node Commander Software User Manual Gateway Communication adjusted through the gateway Control Panel Access the Control Panel by l l l l i i Once communication has been established the gateway settings can be l l l l highlighting the gateway and selecting the View button in Live Connect l l l UPnP Discovered WSDAs 192 168 167 76 5000 192 168 167 90 5000 192
36. yer 11 3 Quick Start Setup and Operation suuuuususeI Ie Iesse 12 3 1 System Connections a 13 3 2 Gateway USB Communication a 14 3 3 Automatic Node Discovery ese sese se Ie e sse se selle lesse seis 15 3 4 Channel Configuration cece ccd ces eere tes eorr eee DER eps Lag kaks PG kama BNIKL idu aaan 17 3 5 Sampling eel 211 1 AG 19 3 6 Data Acquisition ese e e se se se Ie eese se selle sesso seis 20 3 7 Viewing Sensor Data cep ree rape ledit residue exe De Lobo EngUM Nace bp PEDE SQUE mha eC 22 4 Gateway Communication 20 0 00 sess esse esse esses esee 23 4 1 Gateway Serial Communication sese le essel nlns 24 4 2 Gateway USB Communication sse e esee nsns nli 26 4 3 Gateway Ethernet Communications Ha 27 4 3 1 Connecting to a DHCP Network with Live Connect 27 4 4 Verify Gateway Communication sssssssssssssssssssssssesse e cececeececeececsececeeee 29 4 5 Removing a Gateway es ese RR eese sese sese Laa Laaa annan 29 5 Gateway Settings 30 5 1 Gateway Information 30 5 2 Transmit Frequency 0 000220 ccc cece cece ccc ec cece esse se se se messe se eee e ree se serre lesen 31 Za LORD MicroStrain SENSING SYSTEMS Node Commander Software User Manual 5 3 Transmit Power 220020 c cece cece cece aoaaa ALAALA eee eee eee eee eee cece eee e cece
37. 2 17 2014 T19 44 47 eruta ARA Las sie er earam View Downloaded Data Erase Node Trigg E 02 17 2014T19 50 05 63 02 17 2014T15_35_34 Trigger01_02 17 eet 2014T15 35 34v open Trager open Feder Ce Figure 91 View Downloaded Data Za LORD MicroStrain 101 SENSING SYSTEMS Node Commander Software User Manual Data Acquisition 10 5 Ending Sampling Sessions There are multiple ways to end sampling sessions Some end the session and stop the sampling while other methods just end the session and allow the node to continue sampling 1 Exit the data view window Click the red X in the upper right of the data sampling win dow This option is used to continue sampling after Node Commander is closed or to end sampling Ke Base Station Com 3 Monitoring NO Node 30282 Sync Ml Modet G Link 106 Avakabie Nodes Y Zee xo IS Pao Bid Options LeS IUE j Sn 2019 060 CEI A Femmare BOS View Mode Giap m Saving Ta C Pogandate MicreStan NodeCommander D ss Sanpled Data sesnon 2 19 2014 115_08 SOWMaster 02 13 2014 TIS 09 SO cov Yds Wah 10 Sme 2033 31063 Ferre 8 18 remm rs del Nam Tigger 3469 TIEETITIT n IIR Figure 92 Ending a Sampling Session When exiting the sampling session in this way data acquisition can be stopped or continue after the data view is closed mao UR ET Broadcasting the Stop Node command to all nodes on Frequency 24
38. 9 Datalogging File Download Za LORD MicroStrain SENSING SYSTEMS 100 Node Commander Software User Manual Data Acquisition The data that is stored in the node memory can be erased from the download window or from the node menu The erase selection is only available in the node menu when selecting just one node at a time Right click on the node name and select Sample Datalogging Erase Download Triggers Nodes Type 30252 G link 10G 14 196 ful Download Complete Total Progress c Cren Donriosded Data Face ode Triggers a Figure 90 Erase Node Memory Data can be viewed from the download window or from the node menu The view triggers selection is only available in the node menu when selecting just one node at a time Right click on the node name and select Sample Datalogging Browse Triggers Browse to the desired files to open The data files are in CSV format Download Triggers Nodes Type Triggers Status 30252 Gink 106 14 1 full Download Complete Time Search me 34 E S Node 30252 Trigger Information 8 19 02 17 2014 T19 43 05 Trigger 1D 0 Trigger Sequence 1 6 19 02 17 2014T19_57_38 E Node 31463 Sample Rate 512Hz Sweeps 14700 GD 02 17 2014T15 35 34 Total Pre 3 e II ores E Trigger 1 Active Channels 1 TE Trager 2 e i Ci WodeCommander W 0
39. Controller window automatically with a communication port assignment If it is not automatically discovered verify the port is active saiyo f amp Base Station Com 3 Figure 5 USB Gateway Communication wa LORD MicroStrain 14 SENSING SYSTEMS Node Commander Software User Manual Quick Start Setup and Operation 3 3 Automatic Node Discovery l l l l l l l l i i Automatic node discovery only works in some boot up modes such as the normal boot mode When the node is set for normal boot mode and powered On the device status indicator on the node will flash rapidly and then pulse in l l one second intervals thereafter If any other indicator behavior is observed the node may be configured for a different mode If the node is in another boot Mode it can be bypassed by toggling the node ON OFF switch rapidly three l times and then leaving it in the ON position for normal power up l l l l 1 After establishing communication with the gateway right click on the gateway name in the Controller window and select Add Node Node Discovery lt gt ESE Monitor Mode Reverify Base Station Add Nodes Configure Add Single Node Node Discovery Scan Network Beacon Network Broadcast za Remove Base Station Figure 6 Adding a Node in Node Commander 2 Turn the node ON with the ON OFF switch During power up the node will transmit a message with its operating
40. G SYSTEMS Sensor Settings Node Commander Software User Manual 8 1 Measurement Units Sensor measurement units are set in the Channel Configuration menu 1 To enter the configuration menu right click on the Node heading and select Configure Con figure Node The Channels tab displays channel options available for the current node Channels Streaming Synchronized Samping Low Duty Cyde Datalogging Power RF info cuum m tete 1M x Volts v 10 mv 147 pa 2M DIG AJD Value bits 220 mV 75 3 E1 DR A D Value bits 20 mv 75 Fl Dic APD Value bits 220 mv 75 5 s V ius AID Value bits Other Aal KO A D Value bits Other 7 6 Na AJD Value bits Other 8 V i AJD Value bits Other fan Figure 52 Channel Configuration Menu 2 Selectthe type of measurement from the Class menu and then select Units AD Value bits The Temperature conversion coefficients are different from the default ck Reset Coefficients to reset the values back to the defaults Calbrated Value Bits to C Slope 0 007324 ote se output siope bits offset Conversion Formula Effective Range 67 84 to 412 1 C Figure 53 Select Sensor Units Za LORD MicroStrain 59 SENSING SYSTEMS Node Commander Software User Manual Sensor Settings 8 2 Conversion Values The conversion values include the slope offset gain scale and formula used to convert th
41. STEMS Node Commander Software User Manual Node Settings 7 9 Node EEPROM Settings Advanced settings can be configured by using coded commands to write directly to the node EEPROM The EEPROM addresses and settings are available from LORD MicroStrain Technical Support Engineers and are only required in special circumstances The EEPROM read write menu is available though the node menu Right click on the node name and select Configure Read Write EEPROM Enter the EEPROM command address and value and then click Read or Write as applicable Base Station Com 3 Communicate Configure Configure Node Remove Node Calibration Coefficients gt Frequency vb Read Write EEPROM on Node 31463 This is an advanced feature used to access a node s internal memory Most node options can be changed via the configuration screen Value EEPROM Address 0 Figure 51 Read Write Node EEPROM Za LORD MicroStrain 56 SENSING SYSTEMS Node Commander Software User Manual Sensor Settings 8 Sensor Settings LORD MicroStrain9 sensor nodes are designed to accept many sensor types and some have integrated sensors Some nodes have multiple input channels and channel types Available sensor settings vary depending on the type of node being used and what channel the sensor is connected to The sensor channel configuration menus change accordingly and can includes settings for measurement units conversion
42. activity timeout Node power management features are available in two menus For direct control over the current state of the node right click on the node name and select Communicate Power Management This menu is used to set the mode into sleep mode The node will stay in sleep mode until the Wake command is executed from the same menu The Action Log window will display the status of the command There is also a command to cycle power to the node This software reboot feature is used in special cases such as when using the Read Write EEPROM command to program the node or for troubleshooting if the node is unresponsive Figure 40 Node Power Basic Commands Additional power settings are found by right clicking on the node name and selecting Configure Configure Node Select the Power tab l l l l l l l l i i If the inactivity timeout is set to a very short duration it may be difficult to execute commands before the timeout occurs In this case use the Stop Node i command to re establish communication and extend the timeout before it l l occurs again l l l Za LORD MicroStrain 45 SENSING SYSTEMS Node Commander Software User Manual Node Settings e Radio Check Intervals is how frequently the node turns on the radio to listen for communications while it is sleeping Longer wait intervals will result in less power use but alos means there may be a delay between the time when the node is sent a Wake command a
43. asts on the frequency channel it is set to If the node is in normal boot up mode it will provide the I l broadcast when it is initially powered on and broadcast on all channels As long as the node is powered on after the Node Discovery feature is activated the gateway will link to it and remember the channel setting for future node queries I l l I l l I l I l l l I l I l I l l I l l I l I l I l l l I l l l e Manually setting the node and gateway frequency channels to match is required in some applications For example when sending broadcast messages from the gateway to multiple nodes including the synchronized sampling beacon all nodes must be on the same channel as the gateway to receive the broadcast Assigning channels is also a good idea when multiple gateways are attached to one host computer or when other wireless equipment is nearby and frequency or transmission interference may occur Read Write EEPROM Calibration Coefficients 11 2 405 Ghz 12 2 410 Ghz 13 2 415 Ghz 14 2 420 Ghz 15 2 425 Ghz 16 2 430 Ghz 17 2435 Ghz 18 2 440 Ghz 19 2 445 Ghz 20 2 450 Ghz 21 2455 Ghz 22 2460 Ghz 23 2465 Ghz 24 2470 Ghz Scan for node Figure 42 Node Frequency Za LORD MicroStrain d SENSING SYSTEMS Node Commander Software User Manual Node Settings 7 4 Transmit Power The transmit power level may require adjustment if power consu
44. ateway can coordinate many nodes of any type and multiple gateways can be managed from one computer with the Node Commander and SensorCloud software platforms Integration to customer systems can be accomplished using OEM versions of the sensor nodes and leveraging the LORD MicroStrain data communications protocol Common applications of the LORD MicroStrain Wireless Sensor Networks are wireless strain sensor measurement wireless accelerometer platforms wireless vibration monitoring wireless energy monitoring wireless environmental monitoring and wireless temperature monitoring Z LORD MicroStrain d SENSING SYSTEMS Node Commander Software User Manual Software Overview 2 Software Overview Node Commander is a full featured data acquisition tool designed for use with the LORD MicroStrain Wireless Sensor Network Node Commander is included with all gateway devices and is used for gateway and node configuration and data collection tasks It includes settings for node and gateway communications power management sensor type and output parameters sensor sampling rates and modes and data handling and storage There are also interactive features that aid in field installation such as node discovery transmission range tests sensor calibration routines and near real time sensor data display Node Commander manages configuration and data collection of multiple gateways and nodes simultaneously including synchronized sampling
45. atus indicator on the node ends the rapid flash sequence and begins pulsing at one second intervals it has completed the normal boot up sequence and is running in idle mode At this point the node should be listed in the Controller window and scanning can be stopped by selecting the Stop button in the Node wa LORD MicroStrain 37 SENSING SYSTEMS Node Commander Software User Manual Node Communication Discovery window Additional node information can be viewed by selecting the symbol next to the node name Please cycle the power on all nodes you d like Node Commander to find Discovered nodes will show up under Base Station Com 3 Click the stop button to leave node discovery mode E Find sampling nodes on frequency 23 oe Step Figure 31 Node Discovery va LORD MicroStrain SENSING SYSTEMS Node Commander Software User Manual Node Communication 6 2 Manually Adding Nodes Nodes can be manually added if the node address is known The address is indicated on the functional test or calibration document included with the node when it is purchased The gateway will search for the node on the frequency it is currently set to If the node is on a different frequency the gateway frequency must be changed in order for the manual addition of the node to be successful See Transmit Frequency on page 31 for instructions on how to set the gateway frequency 1 Make the hardware connections and establish comm
46. based on the range of strain being measured in the application and the sensitivity of the gauge volts strain DESIRED OUTPUT engineering units microstrain PROCEDURE 1 Enter the node channel configuration menu by right clicking on the node name in Node Commander and selecting Configure Configure Node and then the Channels tab Select the check box for the channel the strain gauge is installed on and then select the Configure button for that channel Channels streaming Synchronized Sampling Low Duty Cyde Dataloggng Power RF info Channel Physical Units Conversion Input Label Data Output Units Range A D Value 20 Dec AJD Value bits 270 mV 21 sE a APVaue bits 2600 UV 2222 bits 70 mv 21 AJO Value it 6 V 2222 APD Value Ma A D Value AJD Value AD Value Figure 66 Node Configuration Menu Za LORD MicroStrain 78 SENSING SYSTEMS Node Commander Software User Manual Sensor Settings 2 Inthis example use the following settings a Coefficients Class Strain b Conversion Coefficients Units uStrain c PGA Settings Input Range 2 5mV expected sensor range d PGA Setting Mid scale for positive and negative going signals 3 Select the Auto Balance button to tare the no load value of the strain gauge Amplified Samples signal bits signal PGA Setti Conversion Coefficients Input Rang
47. command to put the node in idle state and allow configuration to occur 2 8 gateway or node is damaged Verify all connections power and settings If available try installing alternate nodes and gateways one at a time to see if the faulty device can be identified If no conclusion can be determined or to send a device in for repair contact Technical Support See Technical Support on page 114 Za LORD MicroStrain 109 SENSING SYSTEMS Node Commander Software User Manual Support Problem Possible cause and recommended solution 3 1 no communication to node or gateway 3 DATA ACQUISITION Verify connections and power to the node and gateway Verify they are powered on and communicating in the software Enter a configuration menu to verify that the node can be accessed sensor data is missing or incorrect 3 2 sampling settings are incorrect If the sampling mode rate or duration are not performing as expected enter the node configuration menu and verify the sampling settings 3 3 sampling has not started If sampling is occurring the mode will be displayed next to the node name in Node Commander The node device status indicator will also be flashing the sampling mode code If the node is not sampling activate it in the software or with a sample on start up boot sequence 3 4 sensor is not connected correctly Verify sensors connections and wiring For non standard connections contact Technical Support See T
48. d Datalogging Datalogging is started by opening a trigger session in Node Commander Datalogging can be initiated for one or multiple nodes at once Datalogging settings are selected in the node configuration menu and can vary between nodes 1 Right click on one node or multiple node selections and select Sample Datalogging Trigger Session or Trigger Datalogging depending if there is one or multiple nodes selected 2 The selected nodes will appear in the Armed Datalogging window The gateway will send a Ping command to each node The Status column will indicate if the ping was successful meaning the node is communicating with the gateway and ready for data acquisition 3 Enter a note for the data file if desired 4 Select Trigger All to begin data acquisition Node 30252 Node 31463 Figure 86 Datalogging Menu Za LORD MicroStrain 98 SENSING SYSTEMS Node Commander Software User Manual Data Acquisition 5 The Progress column will indicate the percentage of sampling that has occurred When it reaches 100 data acquisition is complete At any time during the data acquisition one or all nodes can be stopped by selecting the Cancel Selected or Broadcast Stop All button This stops the data acquisition process and sets the node back in idle Alternatively the Close button can be used to close the datalogging window without ending the data acquisition Data acquisition will continue until done or until a stop
49. d firmware revision is found in the gateway Information window The window is accessed by right clicking on the gateway name and selecting Configure Configure Base Station There is also a Label field to give the gateway a unique name which is useful when there are multiple gateways in the system Gateway transmit power can also be selected in this window See Transmit Power on page 32 for additional information Model WSDA Base 104 USB Area 1 Gateway 18F46K20 40 MHz Part Number 6307 1040 1040 0404 Radio Type CC2420 2 4 GHz Band Com 3 Operating Frequency 15 2 425 Ghz Transmit Power 16 dBm 39 mw Extended Range XR amp Area 1 Gateway Base Station Com 3 Figure 24 Gateway Information and Name Za LORD MicroStrain 30 SENSING SYSTEMS Node Commander Software User Manual Gateway Settings 5 2 Transmit Frequency I l I l I l i i e The gateway can automatically manage nodes operating on different l frequencies by using the Node Discovery feature in Node Commander In l this routine the gateway listens for node broadcasts on the frequency channel it is set to If the node is in normal boot up mode it will provide the I l broadcast when it is initially powered on and broadcast on all channels As long as the node is powered on after the Node Discovery feature is l activated the gateway will link to it and rememb
50. depending on which model gateway is used For example the WSDA Base 10x LXRS gateway utilizes local serial connections to the host computer such as RS232 and USB and interface with the Node Commander software The WSDA 1000 LXRS gateway utilizes Ethernet communications and can be used with either Node Commander or SensorCloud Users can also write their own programs by utilizing the LORD MicroStrain Wireless Sensors Network Software Development Kit Ze INS GY lt connect sensors N AE ES wr VA node hi AS a power supply and adapters communication uA not used with USB base station cable x 3 Vp AED Qs tm mog a m3 Pa gateway a Figure 4 System Connections Za LORD MicroStrain 13 SENSING SYSTEMS Node Commander Software User Manual Quick Start Setup and Operation 3 2 Gateway USB Communication For USB gateways drivers need to be installed on the host computer These drivers are included with the Node Commander software After the software is installed the USB gateway will be detected automatically when the gateway is plugged in 1 Open the Node Commander software Ba A Node Commander 2 See System Connections on page 13 Make all hardware connections Power is applied to the gateway through the USB connection Verify the gateway status indicator is illuminated 3 Open Node Commander 4 When connected the gateway should appear in the
51. e Cass Hardware Offset 47 Units Strain gt Strain wizard AID Value bits Click Strain Wizard to run the Strain Wizard Bits to pStrain Slope 1 m i um Conversion Formula output slope bits toffset Wu T1 Effective Range 0 to 4095 Strain lE Offset 0 pomme 0 l Channel 1 balanced to 31108 The offset for this l LI channel has been updated to 515 9 Ez M i Figure 67 Channel Settings va LORD MicroStrain a SENSING SYSTEMS Node Commander Software User Manual Sensor Settings 4 Selectthe Strain Wizard 5 Select Full Bridge for the Bridge Type ClickNext Select Use the Strain Measurement Wizard and then click Next 6 Setthe following for this example a Number of Active Gauges 4 for a full bridge strain gauge b Gauge Factor ratio of mechancial strain to electrical output a gauge specification c Gauge Resistance enter strain gauge ohm value a gauge specification d Shunt Resistance 499000 ohms CT Please enter the bridge configuration information When done hit the Calibrate button for the changes to take affect and please be patient Number of Active Gauges Gauge Factor 2 00 pa Gauge Resistance 1000 ohm Shunt Resistance 499000 ohm Simulated Strain 250 00 Slope Residual Offset Select the correct bridge values then click Calibrate Touchi
52. e sensor A D value to engineering units The A D value bits are the digital representation of the sensor voltage output The type of sensor channel and desired engineering units determine what conversion values are available The values are entered through the Node Commander software and saved in the node memory for the applicable node channel In order to report accurate readings many sensors require calibration Calibration coefficients normalize the sensor output to a known reference device and are often expressed in the measurement unit conversion values Calibration accounts for the slight variations between sensor elements wiring system electronics sensor mounting and environmental conditions The conversion values can be determined mathematically from the sensor sensitivity specifications from the sensor manufacturer calibration data or through a calibration process Calibration incorporates coefficients that normalize the sensor output to a known reference device in order guarantee accuracy of the sensor readings especially when making small or precise measurements See Sensor Calibration on page 67 for more information Not all sensors require calibration Conversion Formula The default formula assumes a linear relationship between the A D value bits and engineering units and is expressed mathematically as y mx b where the y is the engineering units at a given point measurement m is the slope of the line that represents
53. e 31463 Monitor Mode Reverify Base Station e Stop Node Add Nodes Configure Beacon e Wake Node Network Broadcast Remove Base Station Ping e S eep Stop Node Wake Node Sleep e Cycle Power Cycle Power Configure Figure 36 Network Broadcast Commands e Read Write EEPROM Za LORD MicroStrain 42 SENSING SYSTEMS Node Commander Software User Manual Node Communication 6 7 Removing Nodes To remove a node that is no longer used right click on the node name in the Controller window and select Remove Node from the node menu amp Base Station Com 3 Sample L Communicate Configure Remove Node Figure 37 Removing a Node va LORD MicroStrain B SENSING SYSTEMS 7 1 Node Information Node information such as the model type serial number radio type operating frequency node address and memory size is found below the node name in the Controller window or more extensively in the node Info window Clicking in the symbol next to the node name will produce a list of some of the node information Figure 38 Node Information The same thing can also be accomplished through the Communicate menu by right clicking on the node name and selecting Communicate Load Node Information Node Commander Software User Manual Node Settings 7 Node Settings Ba Node Commander Da Controler Ox amp Base Station Com 3 gt Node 372 NEW Base Station Com 3 59 MB Model V Li
54. e Insert Page Layout Formulas Data Review View Acrobat Neevia EE E LL Ld Q def E Gall EE yp P ad ux e CRI t D e PivotTable Table Picture Clip Shapes SmartArt Column Line Pie Bar Area catter Other Hyperlink Is an da charts Tables Illustrations J Charts Scatter 1 f 2033 fe i FR mr m ers E 6 less isl LI measured applied 1 bits pounds WW Na 2 AM RA L3 a 2069 og 2108 NE 2213 oi All Chart Types OO Siei 8 A Bomam Comm T a n a uU d J K 9 measured applied 1 bits pounds a 2 3 2033 0 25 2069 5 2108 10 20 2213 25 Seriest 04 T T 2000 2050 2100 2150 2200 2250 sd Figure 57 Generate a Scatter Chart va LORD MicroStrain i SENSING SYSTEMS Node Commander Software User Manual Sensor Settings 4 Right click on the graphed line and select Trendline 5 Designate the line as Linear and check the option to display the formula on the chart fomattendine sn Trendline Options Fl 8 Line Color Trend Regression Type measured applied 30 ml Dom dem m emm mmm Gum hm Line Style Shadow Exponential E Linear Forecast Forward 0 0 Badward 0 0 Set intercept 0 0 Z Dsplay Equation on chart 7 Display R squared value on chart Figure 58 Plot Trendline 6 The formula of the line is y mx b where the yis the engineeri
55. e more accurate information than printed or file copies Document Where to find it Product Datasheets http www microstrain com wireless sensors Product Manuals and Technical Notes http www microstrain com support docs Product Application Notes http www microstrain com applications NIST Calibration Procedures http www nist gov calibrations i r ASTM Testing Procedures http Awww astm org Standard standards and publications html Table 9 Related Documents Za LORD MicroStrain VH SENSING SYSTEMS Node Commander Software User Manual References 12 2 Glossary These terms are in common use throughout the manual A D Value the digital representation of the analog voltages Analog to digital A D conversion The accuracy of the conversion is dependent on the resolution of the system electronics Higher resolution produces a more accurate conversion ASTM Association of Standards and Testing A nationally accepted organization for testing and calibration of technological devices Base Station The base station is the transceiver that attaches to the host computer and provides communication between the software and the node s It is also referred to as a gateway Bits the digital equivalent of voltage on the node Calibration to standardize a measurement by determining the deviation standard and applying a correction or calibration factor Configuration a general term applied to the node indicating
56. echnical Support on page 114 3 5 sensor channel not configured correctly Verify that the sensor is configured on the correct channel and has been enabled for data acquisition 3 6 sensor calibration is invalid If possible perform a field verification of the sensors by applying known loads and comparing the measured values In the channel configuration settings verify that the sensor channel units are selected correctly Verify that the calibration calculations are correct Verify that the gain and offset range are correct and that the baseline offset is set with Auto Balance as applicable Verify that the calibration values slope and offset are correct Verify that all parameters were written to the node channel Recalibrate as needed wa LORD MicroStrain 110 SENSING SYSTEMS Node Commander Software User Manual 112 Communications Ports in Windows The Windows Device Manager can be used to determine what communication port a RS232 or USB gateway is connected to 1 Click on the Windows Start icon and select Control Panel 2 Navigate to the System menu and select Device Manger The menus may appear different depending on the version of Windows and the View settings ig gos Fie Fae vem Toss Help s28ro 6227 sa No 365hDs NGA mas 9 FMV ERTERSECERTEEE Ekt v amp n G0 184p Control Panel System and Security System File Edit View Tools Help tro Panel Hi
57. ed for use with USB gateways Once installed the software will automatically detect and configure any USB gateways that are plugged into the host computer 2 3 Software Preferences The Preferences menu is used to configure basic software operational features such as the default data directory disk space allocation for data and device and graphing preferences To access the Preferences menu click on the Edit header and select Preferences NodeCommanderPreferences 0000000000000 s Gees EEE Devices Graphing Data Directory Plugins C ProgramD ata MicroStrain NodeCommander D ata Reset to Default Browse Disk Space Minimum Disk Space Required to Collect Data 1 GB Ke Base Station Com 3 19 Node 30252 4 Node 31463 Figure 3 Software Preferences wa LORD MicroStrain 11 SENSING SYSTEMS Node Commander Software User Manual Quick Start Setup and Operation 3 Quick Start Setup and Operation To acquire sensor data nodes are used with any LORD MicroStrain9 data gateway such as the WSDA Base 10x LXRS or WSDA 1000 LXRS and a software interface LORD MicroStrain has two software programs available for the Wireless Sensor Network SensorCloud and Node Commander SensorCloud is a web based data collection visualization analytical and remote management platform based on cloud computing technology SensorCloud provides the most complete functionality The Node Comma
58. er Tick 8181 A Num Triggers 14 Lost Samples 1198 5 8 Node 31463 LOC p mag IM Modet V Link 7 Node 30252 LB Options LxRS Sample Rate S124 Timer Tik 25259 J SIN 2433 31463 Total Sangles 23666 Firmware 818 Lost Samples 1583 Packet Success 93 7 N qf Memory Full 0 4c Num Triggers 0 Figure 84 Low Duty Cycle Data Grid View a Device status Node sampling mode and gateway status are displayed in parentheses next to the device name b Node information includes node serial number and sampling statistics Right click on the node name for more menu options such as Stop Nodes c Data display of the sampled data with each channel in a column d Radio strength indicates how good the communication is between the gateway and node See Range Test on page 49 e Data file The location and size of the data file as data is added View the data in CSV format with the Open File button f View menu Select between Data Grid and Graph views g End sampling The red X is used to exit the sampling window and or end sampling See Ending Sampling Sessions on page 102 wa LORD MicroStrain 96 SENSING SYSTEMS Node Commander Software User Manual Data Acquisition Use the view menu to select the Graph view of the data Click on the node to view the graph for that node Click again to hide it Ke Base Station Com 3 Monitoring 3 89 Node 30252 LDC H W Model G Link 10G Prvadable Nod YAris Zoom
59. er the channel setting for future node queries i I l l l l I l I l I l I l I l l l I l l l I l I l I l l l I l I l I l I l I l l l e Manually setting the node and gateway frequency channels to match is required in some applications For example when sending broadcast messages from the gateway to multiple nodes including the synchronized sampling beacon all nodes must be on the same channel as the gateway to receive the broadcast Assigning channels is also a good idea when multiple gateways are attached to one host computer or when other wireless equipment is nearby and frequency or transmission interference may occur Add Nodes Configure 11 2 405 Ghz 12 2 410 Ghz 13 2415 Ghz 14 2420 Ghz 15 2425 Ghz 16 2 430 Ghz 17 2 435 Ghz 18 2 440 Ghz 19 2 445 Ghz 20 2 450 Ghz 21 2455 Ghz 22 2 460 Ghz 23 2 465 Ghz V 242470 Ghz Beacon Network Broadcast Remove Base Station Figure 25 Gateway Frequency Za LORD MicroStrain 31 SENSING SYSTEMS Node Commander Software User Manual Gateway Settings 5 3 Transmit Power The transmit power level may require adjustment if power consumption is a concern or in regions where there are transmit power restrictions Lowering the power output reduces power consumption but it also reduces the wireless communication range between the gateways and nodes Actual range is highly dependent of how the nodes and ga
60. fset Scale with Auto Balance This feature is only available for channels with differential inputs and assigns the position and value of the no load measurement of the sensor The offset scale level adjusts the operating window of the sensor measurements in reference to the entire range For example in mid scale the sensor no load measurement will be placed in the middle of the range providing it 5096 of the range for positive readings and 50 of the range for negative readings Once the scale level is selected the Auto Balance procedure is used to assign the actual sensor no load measurement to the designated scale e Lowis for positive going signals zero at 25 of total range e High is for negative going signals zero at 75 of total range e Midscale is for and positive and negative going signals zero at 50 of range sensor no load measurement auto balanced to low scale Figure 54 Offset Scale Setting Za LORD MicroStrain 61 SENSING SYSTEMS Node Commander Software User Manual Sensor Settings The conversion values can be entered in two menus The Channel Configuration menu has more options than the Calibration Coefficients menu but both are acceptable ways to enter the values and formulas E 5 i AA ii i E H i i Streaming Synchronized Sampling Low Duty Cyde Datalogging Power RF info Channel Physical Units Conversi
61. he event criteria The node can also be configured to store the data in the node memory to store the data and transmit it to the gateway or to transmit only A time stamp is obtained from the host computer when sampling is started Each sample is then incrementally stamped based on that starting point and the node clock To adjust synchronized sampling settings open the node configuration menu by right clicking on the node name and then selecting Configure Configure Node Select the Synchronized Sampling tab Key menu options include the burst and event based sampling features Configuration Node 31463 Goes Sreang Sredvonzed Saming uo Duty cya Balong Power me sampling settings S eL om T Show Advanced Options Burst Sampling De Sample Rate 32Hz Packet Format Standard bits mode v E Unlimited Sample Duration Time Duration 4062 5 sec Percent of Total Bandwidth 0 78 3 Configuration Node 3146 Event Driven Sampling F Enable Configure Channels Streaming Synchronized Sampling Low Duty Cyde Datalogging Power RF Info Show Advanced Options rst songin EIL T Pale Ga Packet Format Standard bits mode v Duration Per Burst 4062 5 sec Time Between Bursts 64067 1 Percent of Total Bandwidth 0 78 Event Driven Sampling T Enable c Figure 73 Synchronized Sampling Settings wa LORD MicroStrain 83 SENSING SYSTEMS Node Commander Software U
62. ibration click Accept Baseline 31107 Offset 24541 Stop Accept Cancel Figure 69 Strain Gauge Calibration va LORD MicroStrain i SENSING SYSTEMS Node Commander Software User Manual Sensor Settings 9 Select Finish to end the Strain Wizard Note the slope and offset values have been calculated automatically LORD Strain Wizard Please enter the bridge configuration information When done hit the Calibrate button for the changes to take affect and please be patient Number of Active Gauges 4 pa Gauge Factor 2 00 X Gauge Resistance 1000 ohm Shunt Resistance 499000 ohm Simulated Strain 250 00 Slope 0 0380749 p strain bit Residual Offset 1184 4 p strain Click Finish to exit the wizard Next Cancel Finish E Figure 70 Completed Strain Wizard 10 Select OK to exit the Channel Configuration window calibration is complete Za LORD MicroStrain f SENSING SYSTEMS Node Commander Software User Manual Sensor Settings 8 3 3 EXAMPLE Manufacturer Calibration NODE V Link LXRS 16 bit 65536 A D values CHANNEL TYPE differential analog input 0 to 3VDC input range SENSOR TYPE pressure transducer voltage output positive going SENSOR PARAMETERS From the manufacturer calibration sheet included with the sensor sensor range 0 250 psi sensor zero load output 0 0032 VDC sensor full scale output FSO wi
63. idle state at which point configuration can occur The sample duration on these boot up sequences is determined by the sampling settings Newly manufactured nodes are configured for normal boot mode See Node Boot Modes on page 52 for more information about setting and overriding boot modes Nodes and gateways have status indicator lights that flash in different patterns to describe what mode they are currently in or activity that is occurring Refer to the device user manual for details Depending on the boot mode selected the node is also set to go into another state after the user timeout interval has occurred For example when the node is in the normal boot mode it will go into the sleep state after the timeout interval has passed This is useful for power conservation however to put it back in idle state for configuration the node stop or wake command must be executed If the node has been inactive for longer than the user timeout period or if the node has entered sleep or sample modes for any reason it may be necessary to execute a stop node command in order to perform configuration tasks va LORD MicroStrain SENSING SYSTEMS Node Commander Software User Manual Node Communication When a node is communicating with the gateway and able to be configured it will appear in the Controller window on a list under the host gateway The listing will include the node name and serial number Additional node information can be vie
64. in the initial stamp Za LORD MicroStrain 88 SENSING SYSTEMS Node Commander Software User Manual Data Acquisition 10 Data Acquisition During data acquisition one sampling mode is chosen for each node Nodes connected to the same gateway can sample in different modes however each node can only run one sampling mode at a time The sampling settings for the node will be applied to all channels See Sampling Modes and Settings on page 80 for information about the sampling settings Nodes can continue to sample even without Node Commander running or actively displaying data See Ending Sampling Sessions on page 102 All sampling modes automatically save data to the host computer See Viewing Sensor Data on page 105 Touching connected sensors and test boards or charging the node battery while acquiring sensor data may induce noise on sensitive sensor signals and is not recommended Za LORD MicroStrain 89 SENSING SYSTEMS Node Commander Software User Manual Data Acquisition 10 1 Streaming Data Streaming may only be initiated on one node at a time To start a streaming data session right click on the node name in the Controller window and select Sample Stream Start The Resync menu option is used to resume viewing a streaming session that is already running a Res bme Steaming Gach Com 3 Node 31463 Frequency 24 LS e s000 1 30000 i i i 0000 41000 42000 43000 4400 45000 46000
65. is a similar methodology to the sensor lab calibration Known loads are applied to the sensor while the sensor output is recorded The load is applied or measured by a reference device In this scenario the sensor may be installed in final field configuration and the load may be applied with the actual stimulus that the sensor will be monitoring The known load value from the reference device is then plotted against the measured output of the sensor to determine the calibration slope and offset In Node Commander this can be accomplished by taking sensors readings while applying the known loads Za LORD MicroStrain 68 SENSING SYSTEMS Node Commander Software User Manual Sensor Settings 8 3 1 EXAMPLE Lab or Field Calibration The lab and field calibrations use similar methodology See Sensor Calibration on page 67 The primary difference is the traceability and calibration environment Lab calibrations are performed in controlled environments with traceable equipment and procedures Field calibrations are more improvised although calibrated equipment can still be used to improve accuracy NODE V Link LXRS 16 bit 65536 A D values CHANNEL TYPE differential analog input O to SVDC input range SENSOR TYPE load cell SENSOR PARAMETERS application voltage range 20mV This is the expected output voltage of the sensor based on the range of force being measured in the application and the sensitivity of the sensor V engineering
66. licable factory calibration values and is therefore unique to each node It is important that a saved file only be loaded on the node it was created on or the node address and factory calibration values will be overwritten If external sensors have been replaced or disconnected since the settings file was created recalibration of the sensors may be necessary The Save Node State and Load Node State features are found in the node Info window The Info window is accessed by right clicking on the node name in the Controller window and selecting Configure Configure Node Name the node settings file with a name that indicates which node it is for example using the serial number Use the Load Node State button to reload previously saved node settings files Gem noaee Se Channels Streaming Synchronized Sampling Low Duty Cyde Datalogging Power RF Info Label Microcontroller 18F67K90 40 MHz Model V Link Address 31463 Radio CC2420 2 4 GHz Band Control Channel 15 2 425 Ghz Serial Number 2433 31463 Memory Size 4MB KA Save As Savein 0870 T Name gt Date modified ay No items match your search Recent Places Desktop ruv Libraries Computer um m Network File name Node 31463 Settings 1 14 14 Save astype Node Commander State File als x Figure 50 Node Settings File Za LORD MicroStrain 55 SENSING SY
67. llowing example a1 analog differential channel icon a2 analog single ended channel icon a3 temperature channel icon b Current Channel Configuration The data output units input and label describe how the channel is currently configured c Configure Select the channel Configure button to change the channel parameters The channel must be enabled first by selecting its adjacent check box AP Value AJD Value a1 AP Value A D Value a2 AJD Value APD Value AJD Value Figure 46 Node Channels Menu Za LORD MicroStrain 50 SENSING SYSTEMS Node Commander Software User Manual Node Settings 2 To enter the channel configuration menu select the channel Configure button as shown in Figure 46 Node Channels Menu The channel must be enabled first by selecting its adjacent check box The channel configuration menu options change depending on the sensor type selected Below is a description of possible settings a Channel Label names the channel b Channel Diagram describes the channel electronics and data flow c Conversion Coefficients defines the type and units of the measurement being made d PGA Settings These settings determine what gain is applied to the sensor measurement and sets the position of the no load baseline measurement for the sensor signal Only available for differential input channels with gain amplifiers e Calibration
68. m the date of receipt for a full refund excluding shipping and handling as long as the product is unaltered and undamaged Items can only be returned after LORD MicroStrain has issued an Return Material Authorization RMA Items must be packed to withstand shipping and returned freight pre paid LORD MicroStrain will inspect the items returned and issue a refund or credit once the items have been examined and are deemed to be unaltered or undamaged Non standard or custom products may only be returned with approval and a re stocking penalty may be assessed A 30 Day Return must be initiated by receiving a RMA from LORD MicroStrain 11 7 Sales Support Products can be ordered directly from the LORD MicroStrain website by navigating to the product page and using the Buy feature http www microstrain com wireless For further assistance our sales team is availalbe to help with product selection ordering options and questions Sales Support sensing sales LORD com Phone 802 862 6629 Toll Free 800 449 3878 Fax 802 863 4093 9 00AM to 5 00PM Eastern Time US amp Canada Za LORD MicroStrain 116 SENSING SYSTEMS Node Commander Software User Manual References 12 References 12 1 Related Documents Many references are available on the LORD MicroStrain9 website including product user manuals technical notes and quick start guides These documents are continuously updated and new applications are added They may provid
69. mmand When the beacon is active the gateway device status indicator will be blue and pulse once a second Ei Node G Ble Edt View Launch Application Help Figure 74 Synchronized Sampling Beacon Za LORD MicroStrain 84 SENSING SYSTEMS Node Commander Software User Manual Sampling Modes and Settings 9 3 Low Duty Cycle Low duty cycle sampling is used for sampling up to 500 times per second Sample rates are user adjustable but are eventually limited by the number of nodes that are sampling and transmitting simultaneously see Bandwidth and Sample Rate on page 88 Sampling can be set to repeat for a fixed interval of time after the sampling has been started or continuously until a stop command is sent In low duty cycle the node can be configured to store the data in the node memory to store the data and transmit it to the gateway or to transmit only Event driven sampling is also available in low duty cycle See Event Driven Sampling on page 87 For sample rates over 1Hz the time stamp in low duty cycle is set by the host computer when the sampling is started For sample rates under 1Hz samples are stamped when the data arrives at the host computer after sampling and transmission To adjust low duty sample settings open the node configuration menu by right clicking on the node name and then selecting Configure Configure Node Select the Low Duty Cycle tab Read Write EEPROM Calibration Coefficients gt f
70. mple or sleep state wa LORD MicroStrain 108 SENSING SYSTEMS Node Commander Software User Manual Support Problem Possible cause and recommended solution 2 4 node is out of range Perform a bench test with the node and gateway in close proximity to verify they are operational See Range Test on page 49 for range test and installation recommendations The system has been tested to operate with the node and gateway up to 2km apart with clear line of sight 2 5 node is not in normal start up mode If the node status indicator shows the node booting in a mode other than the normal boot mode it can be bypassed by toggling the node ON OFF switch rapidly three times then leaving it in the ON position for normal power up In normal boot mode the conmmunication can be established with automatic node discovery or manually once the boot process is complete and the node is in the idle state Start up mode can then be changed in the software 2 6 node is sampling Observe the node status indicator LED to determine what state it is in boot idle sample or sleep If the node is sampling it cannot be configured In Node Commander execute the Stop Node command to put the node in idle state and allow configuration to occur 2 7 node is sleeping Observe the node status indicator LED to determine what state it is boot idle sample or sleep If the node is sleeping it cannot be configured In Node Commander execute the Stop Node
71. mpling and low duty cycle files are found in the Sampled Data folder Datalogging files need to be downloaded from the node before they are available for viewing and can be accessed through datalogging menus as well as the File menu They are stored by default in the Downloaded Triggers folder Streaming data is stored in the Streaming folder b d i Explore Data Directory i Upload Data to SensorCloud X Exit E O Node372 Edt View Tools Help i Organize v Z Open Incudeinlibrary gt Shatewith gt Bum New folder E TO J Downloaded Tnggers Sa Libraries Ji Sampled Data Ji Streaming ACC m i MicroStrain NodeCommander Data Sampled Data session 09 30 2013 T19 46 08 WILL File Edit View Jools Help Organize v fX Open Print Burn New folder Name Ir Favorites BE Desktop 454 Master 09 30 2013 T19 46 08 csv 237 KB d Downloads Ei Node372 csv 238 KB 14 Recent Places i Sensorinfo 09 30 2013 T19 46 08 csv 3 1 KB Ei SyncNetworkInfo 09 30 2013 T19 46 08 5 1 KB J Libraries 4 Documents a Music im Pictures H videos 1v Computer amp Local Disk C Figure 97 Exploring Data Za LORD MicroStrain 105 SENSING SYSTEMS Node Commander Software User Manual 11 Support 11 1 Troubleshooting Guide 1 POWER gateway or node does not turn on or node does not charge 2 COMMUNICATION no communication to 3 DATA ACQUISITION sensor da
72. mption is a concern or in regions where there are transmit power restrictions Lowering the power output reduces power consumption but it also reduces the wireless communication range between the gateways and nodes Actual range is highly dependent of how the nodes and gateways are installed and the surrounding environment Refer to the device user manuals for installation recommendations Maximum BEULI Extended 16 dBm 39mW Setting Power Output Standard 10dBm 10mW Low OdBm 1mW Table 2 Transmit Power Settings The transmit power setting for the node is found in the Configure Node menu Transmit Power Level 16 dam 39 mw Extended Range XR Estimated Range 2 klometers Line of Sight LOS Read Write EEPROM Calibration Coefficients Frequency Figure 43 Transmit Power Setting Za LORD MicroStrain 45 SENSING SYSTEMS Node Commander Software User Manual Node Settings 744 Range Test After establishing communication between node and gateway use the range test in Node Commander to monitor the signal strength and best position the node gateway and antennas for installation Achievable range is determined by the transmit power setting and is highly dependent on the physical environment surrounding the devices 1 Right click on the node header and select Communicate Range Test Communicate Configure Stop Node Load Node Information ddl Num Triggers 0 Power
73. ms Microsoft Windows XP Pro Vista and 7 32 64 bit 32 MB video card 800 x 600 video resolution All LORD MicroStrain LXRS mXRS and legacy 2 4Ghz wireless sensors nodes and gateways Za LORD MicroStrain 113 SENSING SYSTEMS Node Commander Software User Manual Support 11 5 Technical Support There are many resources for product support found on the LORD MicroStrain website including technical notes FAQs and product manuals http www microstrain com support overview aspx For further assistance our technical support engineers are available to help with technical and applications questions Technical Support sensing support LORD com Phone 802 862 6629 Toll Free 800 449 3878 Fax 802 863 4093 SKYPE microstrain wireless support Live Chat is available from the website during business hours 9 00AM to 5 00PM Eastern Time US amp Canada va LORD MicroStrain SENSING SYSTEMS 114 Node Commander Software User Manual Support 11 6 Warranty Information Warranty LORD MicroStrain warrants its products to be free from defective material and workmanship for a period ofone 1 yearfrom the original date of purchase LORD MicroStrain agrees to repair or replace at its sole discretion a defective product if returned to LORD MicroStrain within the warranty period and accompanied by proof of purchase This warranty does not extend to any LORD MicroStrain products which have been subject to misuse alteratio
74. n neglect accident incorrect wiring mis programming or to use in violation of operating instructions furnished by us nor extend to any units altered or repaired for warranty defect by anyone other than LORD MicroStrain This warranty does not cover any incidental or consequential damages and is in lieu of all other warranties expressed or implied and no representative or person is authorized to assume for us any other liability in connection with the sale of our products Some states do not allow limitations on how long an implied warranty lasts and or the exclusion or limitation of incidental or consequential damages so the above limitations and exclusions may not apply to the original customer Terms and Conditions of Sale Please refer to the LORD MicroStrain website Support page for complete Terms and Conditions of product sales Terms and Conditions of Service Please refer to the LORD MicroStrain website Support page for complete Terms and Conditions of product service Trial System To enable customers to try our products risk free LORD MicroStrain offers a 30 day return policy on the purchase of a starter kit In order to take advantage Za LORD MicroStrain 115 SENSING SYSTEMS Node Commander Software User Manual Support of this offer a purchase order or payment for the starter kit is required when the order is placed If the product is not suited to the application the product may be returned within 30 days fro
75. n 52 7 7 Applying Node Configuration e e mes me rele sn sies 54 7 8 Saving Node Settings oue cede e Eee bo pce ea eb De eod erbstes ERN pl PAGALIT NAL 55 7 9 Node EEPROM Settings e cee ce es re eese esses sc sncs 56 8 Sensor Settings 7 esse sse se essel sese seres elei 57 8 1 Measurement Units 22 22 ee 59 8 2 Conversion VANES AA 60 wa LORD MicroStrain SENSING SYSTEMS Node Commander Software User Manual 8 2 1 Calculating a Linear Slope a 63 8 2 2 Differential Input Gain and Offset 2 20 0 20 0 020 ecc ccc cececcececcececcececcececcececeece 65 Example Gain and Offset Calculations o cece cece cece cece ce cence cece eee ceeeeeeceeeees 66 8 3 Sensor Calibration NER DR M 67 8 8 1 EXAMPLE Lab or Field Calibration seen een 69 8 3 2 EXAMPLE Internal Shunt Calibration seen enene 73 8 8 8 EXAMPLE Manufacturer Calibration seen enses 78 9 Sampling Modes and Settings 80 AA NNI RR PAA ee 82 9 2 Synchronized Sampling o eee LALA ean coco OR Do kkk kaka sce NAG Dn KAL NEU Te CO hapag 83 9 2 4 Using the Beacon se se se sess te eere see se sessiles eis 84 9 3 Low AA AN 85 9 4 Datalogging 00 00 e cece cece cece cece cece cece II e eee ne e se Ie Ie s re ee se lesse sese 86 9 5 Event Driven Sampling 0 20 0 0 02 sese ese e se esse esses sese lil 87
76. n Sampling e Synchronized Sampling includes a bandwidth calculator in the node configuration menu and in the Synchronized Sampling menu that updates depending on what options and nodes are selected 9 7 Time Stamping A time stamp may be attached to the sensor data packets to indicate what time a sample was taken Each sampling mode handles time stamping differently Streaming No time stamp is used in streaming mode Synchronized Sampling Synchronized sampling has the most accurate sample timing The time stamp is obtained from the host computer when sampling is started Each sample is then incrementally stamped based the precision real time clock in the node Timing accuracy is guaranteed to be within 32 microseconds Absolute time is dependent on the accuracy of the host computer in the initial stamp Low Duty Cycle For sample rates under 32Hz samples are stamped when the data arrives at the host computer after sampling and transmission For sample rates over 32Hz a time stamp is obtained from the host computer when sampling is started The time stamp for each subsequent sample is then calculated from the sample rate Absolute time is dependent on the accuracy of the host computer in the initial stamp Datalogging A time stamp is obtained from the host computer when sampling is started The time stamp for each subsequent sample is then calculated from the sample rate Absolute time is dependent on the accuracy of the host computer
77. n cannot occur when the node is sampling or sleeping The Stop Node command is used to end whatever activity the node is currently performing put the node into idle mode and allow configuration It can be use to exit sampling modes such as sampling on boot up and to interrupt other routines such when the node is in sleep mode To execute a Stop Node command right click on the node name in the Controller window and select Communicate Stop Node from the node menu After the node has been stopped node menus such as Configure will become accessible Communicate Configure Remove Node Figure 35 End Node Activity to Reestablish Communication va LORD MicroStrain i SENSING SYSTEMS Node Commander Software User Manual Node Communication 6 6 Network Broadcast The network broadcast feature is used to send the same command at the same time to multiple nodes connected to the same gateway Nodes must be on the same transmission frequency channel as the gateway to receive broadcast commands Network broadcast functions include communications sampling and configuration commands Network broadcast commands are found in the gateway menu Right click on the gateway name and select Network Broadcast Then select the desired category and command Sample e Synchronized Sampling Start e Low Duty Cycle Start e Armed Datalogging e Trigger Datalogging Session e Erase Communicate Ping c Base Station Com3 on H 8 Nod
78. n the node 3 Right click on the gateway name in the Controller window and select Scan Network 4 Enterthe node address range The wider the range the longer the scan will take 5 Select OK 6 Ifthe node is found verify communication by expanding the node information list with the symbol beside the node heading If the information list appears communication has been established Add Single Node Node Discovery Scan Network Scan Frequencies Enter the node addresses to start scanning for From 31450 To 31470 F Remove all nodes from the Controller before scan Scanning network cum LE Waiting for network scan to complete Node 31467 of 31470 Figure 33 Scanning Addresses Za LORD MicroStrain 40 SENSING SYSTEMS Node Commander Software User Manual Node Communication 6 4 Verifying Node Communication Use the Ping command to verify communication with a node at any time Right click on the node name in the Controller window and select Communicate Ping from the node menu The Action Log window will report if the Ping was successful or not A successful ping means the node is communicating with the gateway amp Base Station Com 3 2 Node 31463 Communicate Configure Range Test Stop Node Load Node Information Power Management Remove Node Figure 34 Test Node Communication 6 5 Reestablishing Communication Node configuratio
79. nced to low scale Figure 60 Differential Input Resolution and Offset 16 bit Node typical nodeinput rangein volts A D counts Za LORD MicroStrain 65 SENSING SYSTEMS Node Commander Software User Manual Sensor Settings Example Gain and Offset Calculations EXAMPLE 1 Sensor signal range O to 50mV Gain setting 21 Baseline offset range setting Mid range Calculations 50mV 21 1 05V maximum voltage of sensor signal with gain 1 05V 1 5V 2 55V maximum input voltage to node with gain and offset Calculated node input over sensor range 1 5 to 2 55V This is a good setting because the node input voltage is within the O to 3V range EXAMPLE 2 Sensor signal range O to 50mV Gain setting 30 Baseline offset range setting Low range Calculations 50mV 30 1 5V maximum voltage of sensor signal with gain 1 5V 75mV 2 25V maximum input voltage to node with gain and offset Calculated node input over sensor range 75mV to 2 25V This may be a better setting than in Example 1 because the gain is higher which could increase the resolution of the measurement The node input voltage is still within the 0 to 3V range EXAMPLE 3 Sensor signal range O to 50mV Gain setting 75 Baseline offset range setting Low range Calculations 50mV 75 3 75V maximum voltage of sensor signal with gain 3 75V 75mV 4 5V maximum input voltage to node with gain and offset Calculated node inp
80. ncludes settings to enable optional sampling features configure nodes and specify where the data is saved The built in bandwidth calculator displays the total bandwidth used by the nodes selected for synchronized sampling Figure 80 Synchronized Sampling Menu a Save Location indicates where the data file will be saved on the host computer Use the Browse button to select a preferred location b Node configuration includes the node serial number sampling settings bandwidth calculation and current status Highlight any node or group of nodes and the Remove Configure and Refresh buttons become active The Configure button opens the node configuration menus to adjust settings as needed and recalculates the node bandwidth Multiple nodes can be configured together by using the Shift or Ctrl key to select them Za LORD MicroStrain 91 SENSING SYSTEMS Node Commander Software User Manual Data Acquisition Save Location C ProgramData MicroStrain NodeCommander Data Nodes 2 Type Active Channels Sampie Rate b Be Node 30252 G4ink 10G RS 1 512Hz Figure 80 Synchronized Sampling Menu c Lossless enables the lossless data protocol The protocol enables buffering and retransmission of data in order to provide 10096 data collection success Using this feature may increase data display latency d High Capacity reduces the transmit rates in order to optimize bandwidth and power savings among nodes with slower sample rates
81. nd when it actually wakes up e User Inactivity Timeout is the amount of time that has to pass with no commands before the activity related to node boot mode occurs For Normal Boot mode this is the time of inactivity that has to pass before the node goes to sleep In some boot modes such as Synchronized Sampling it will begin sampling after that period of time e Boot Mode determines what the node will do when it is turned on Most of the boot options are related to what type of sampling is desired and not directly to do with power consumption however some sampling modes use significantly less power than others For example Low Duty Cycle uses a lot less than streaming because the node is only on and transmitting periodically See Node Boot Modes on page 52 Read Write EEPROM Calibration Coefficients Frequency Channels Streaming Synchronized Sampling Low Duty Cyde Dataloggng Power Rr Info Check Radio Interval 5s X User Inactivity Timeout 7200 sec F Disabled Boot Mode Normal Boot Mode M Figure 41 Advanced Power Settings Za LORD MicroStrain 46 SENSING SYSTEMS Node Commander Software User Manual Node Settings 7 3 Transmit Frequency I l l l e The gateway can automatically manage nodes operating on different l frequencies by using the Node Discovery feature in Node Commander In l this routine the gateway listens for node broadc
82. nder software package is also fully featured and includes all functions needed for sensor configuration and data acquisition Node Commander is included with all data gateways and is sufficient for the basic operations explained in this section In this section hardware and software setup is described including an overview of the Node Commander software menus required to configure a sensor connected to the node and begin data acquisition It is intended only as a quick start guide and is not a complete demonstration of all system or software features and capabilities Za LORD MicroStrain 12 SENSING SYSTEMS Node Commander Software User Manual Quick Start Setup and Operation 3 1 System Connections To acquire sensor data the following components are needed 1 external sensors as applicable 2 wireless sensor node 3 data gateway 4 local or networked host computer with access to the data acquisition software such as Node Commander or SensorCloud The selection of sensors nodes gateways and software are application dependent but the basic interfaces are the same See Figure 4 System Connections for a connections overview Nodes will communicate with any gateway Gateways with analog outputs can be connected directly to standalone data acquisition devices for data collection however system configuration will still occur through a digital communication interface Communication protocols between the gateway and host computer vary
83. ng connected sensors and test boards or charging the node battery while acquiring sensor data may induce noise on sensitive sensor signals and is not recommended Za LORD MicroStrain 75 SENSING SYSTEMS Node Commander Software User Manual Sensor Settings 7 Select Calibrate 8 Verify the calibration looks as shown in Figure 69 Strain Gauge Calibration The green line represents the output of the strain gauge With no load applied it should sit near the Auto Balance baseline value and is represented by the red dashed line During calibration a shunt resistance selecting on the Parameters page is applied across the strain bridge shown by the square pulse on the output The Offset value shown with the dashed blue line is the average output value of the pulse and should sit across the top of the pulse If the gauge has not had to time to equilibrate before sampling or if varying environmental factors exist spikes in the gauge output may occur and affect the Baseline and Offset values If this occurs the Offset and Baseline values can be adjusted to clip the spikes in the output values Adjust them as needed and select Accept when completed Shunt Calibration Graph p Shunt Calibration Node 31463 Channel 1 Com 3 oo Offset tm Gauge Output 25000 Haman e ur a m t Qo Baseline Sweep Value am e 8 J I 1 1 1 I 0 100 200 300 400 500 600 700 800 900 1000 Sweep Number To accept cal
84. ng units at a given point measurement m is the slope of the line that represents the linear ratio x is the A D value at a given point and bis the fixed zero load offset of the sensor Enter the slope and offset as the conversion values for the sensor channel under the applicable engineering units In this example enter 0 1338 for the slope and 282 36 for the offset for the pounds units conversion values on the measured channel i a PO PA AA measured applied _1 bits pounds 30 21 3 2033 0 25 4 2069 5 y 0 1388x 282 36 5 2108 10 20 _6 2213 25 ES gt Series1 E 10 Linear Series1 10 EI 5 a o M A3 2000 2050 2100 2150 2200 2250 14 5 i 64 Figure 59 Slope and Offset Values Za LORD MicroStrain SENSING SYSTEMS Node Commander Software User Manual Sensor Settings 8 2 2 Differential Input Gain and Offset The combination of the gain offset and sensor signal cannot exceed the O to 3VDC input of the analog to digital converter within the node See Example Gain and Offset Calculations on page 66 e Resolution Applying gain to the sensor signal can be used to maximize the measurement resolution The more of the range that is used the more digital counts are available to measure the signal which typically means higher resolution measurements Limitations to the gain adjustment are the sensor s measurement capabili
85. nk LW Options LXRS j SIN 2428 0372 A Firmware 805 Memory Full 0 de Num Triggers 2 Figure 38 Node Information If the node information will not load the node is not communicating Try executing the Stop Node command to ensure the node is not in a sampling or sleep mode and then load node information More node information can be found in the node Info window This window is accessed by right clicking on the node name and selecting Configure Configure Node and the Info tab In the node Info tab there is a field to give the node a unique name which is useful when there are multiple nodes Figure 39 Additional Node Information and Name Node settings can be saved and loaded as well See Saving Node Settings on page 55 Configuration Node 31463 Sean JJ Microcontroller 18F67K90 40 MHz Address 31463 Control Channel 15 2 425 Ghz Label Area 1 Node 1 Model V Link Radio CC2420 2 4 GHz Band Serial Number 2433 31463 Save Node State Load Node State Figure 39 Additional Node Information and Name 44 Za LORD MicroStrain SENSING SYSTEMS Node Commander Software User Manual Node Settings 7 2 Node Power Management The node power management features can be used to conserve power when the node is not actively sampling Power management features include an ultra low power sleep mode node boot up options radio check interval settings and an in
86. nu Refer to the gateway user manual for more information Analog gateways have two programmable buttons located on the front of the device The function of these buttons can be assigned or disabled in the Buttons menu and include power and sampling options Information Analog Paring Buttons V Enable Analog Pairing Analog Port Node Address Node Channel Float Apply All 31436 i 31436 1 31436 2 31436 3 314 Base Station Configuration 1 2 3 4 31436 4 5 Information Analog Paring Buttons 7 8 Function Start Synchronized Sampling x c2 Arm and Trigger Datalogging X Figure 28 Analog Gateway Configuration wa LORD MicroStrain 34 SENSING SYSTEMS Node Commander Software User Manual Node Communication 6 Node Communication The node has four communication states Boot up Idle Sleep and Sample Node configuration is only possible when the node is in the idle state After boot up the node will enter idle state if itis configured for a normal boot mode The node can also be configured to enter the sample or sleep state after boot up in a few different ways For example the node may be configured to boot up and then start sampling continuously In that scenario the node will never go into the idle state so configuration of the node is not possible until a stop command is executed to end the sampling In other boot modes the node will boot up sample and then go into
87. nywhere in the Controller window and select either Scan or Add Com Port from the menu 1 Scan Com Ports will attempt to find the connected device automatically and is useful if the port number is not known Refer to the Action Log window to monitor the scan progress 2 Add Com Ports can be used to assign the port number the gateway is attached to For information on communication port numbers and settings in Windows see Communications Ports in Windows on page 111 If the name and icon are grayed out the gateway has been added but is not yet communicating n Node Commander View Launch Application Help Add Com Port Scan Com Ports Remove Greyed Com Ports Figure 16 Scan or Add Com Port Za LORD MicroStrain 24 SENSING SYSTEMS Node Commander Software User Manual Gateway Communication 3 If using the Add Com Ports option select the port that the gateway is connected to and then click OK Figure 17 Select Com Port 4 The gateway will now appear in the Controller window Figure 18 Serial Gateway Communication va LORD MicroStrain 7 SENSING SYSTEMS Node Commander Software User Manual Gateway Communication 4 2 Gateway USB Communication For USB gateways drivers need to be installed on the host computer These drivers are included with the Node Commander software After the software is installed the USB gateway will be detected automatically when the gateway is plugged in
88. on Input Label Configure may Conversion Coefficents Enabled Data Output Units Range Nec raat mi jv X Dv bts 270 mv 21 Hardnare Ot s0 vse i W 1 Unable to convert from Volts to Pressure 70 mv 2 Slt Auto Balance oye anihan loy x AP Value bits NIA D Hoh Mscale O Low O 2600 wv 2222 Ls s 1 Offset O Conversion Formula outputediope bits soffset Other x EffectveRange 0 to 6 5548 004 p5 Figure 56 Advanced Conversion Values Menu Za LORD MicroStrain 62 SENSING SYSTEMS Node Commander Software User Manual Sensor Settings 8 21 Calculating a Linear Slope A data analysis tool such as Microsoft Excel can be used determine the slope of a linear relationship between sensor output A D value bits and engineering units This is not a calibration unless a calibrated reference device is used to measure the applied loads See Sensor Calibration on page 67 for information and examples for determining calibrations coefficients Here is an example using Excel 1 Open a blank spreadsheet 2 Enter the A D value bits measurements and applied load in the desired engineering units in two columns Enter A D value is in the left column x axis value and the applied load in the right y axis value 3 From the Insert menu select Chart Scatter Select the preferred format e3 id o9 slope calc xis HY Hom
89. ot up node configuration cannot occur until the sampling is completed or the Stop Node command is executed e Node boot modes can be bypassed by toggling the node ON OFF switch rapidly three times and leaving it in the ON position This will result in a normal boot up Boot Mode Low Duty Sampling Synchronized Sampling Datalog Description Node turns on sends out a status message and then waits in idle for a command Node turns on and takes a sample at set parameters If set for a fixed sample interval on completion the node sends out a status message and then waits in idle for a command If set for continuous sampling the node turns on and samples until a stop command is sent Node Device Indicator Sequence Several rapid flashes then pulses in one second intervals Pulses at the set sample inter val when sampling Normal boot indicator sequence on completion On solid while sampling Normal boot indicator sequence on completion On dimly while sampling normal boot indicator sequence on completion One flash when sampling then on dimly when datalogging Normal boot indicator sequence on completion Node turns on and then goes Off with occasional flash at set into sleep mode radio check interval Table 3 Node Boot Modes 52 wa LORD MicroStrain SENSING SYSTEMS Node Commander Software User Manual Node Settings 1 Tochange the node boot mode right click on the node name and
90. pling and none is saved to the node memory It is saved on the host computer in a data file No time stamp is used in streaming mode Active Sample Rate Channels samples sec 736 679 617 565 520 485 452 424 Table 7 Streaming Sample Rates To adjust streaming sample settings open the node configuration menu by right clicking on the node name and then selecting Configure Configure Node Select the Streaming tab Chahngis Streaming umm tow Duty Cyde Datalogging Power RF Info continuous Streaming Stream Settings Time Duration 0 13587 sec Sweep Rate 736 sweeps sec Figure 72 Streaming Settings wa LORD MicroStrain 82 SENSING SYSTEMS Node Commander Software User Manual Sampling Modes and Settings 9 2 Synchronized Sampling Synchronized sampling is the most capable and accurate sampling method Sample rates are set by the user and there is a burst mode for high speed short duration sampling Event based sampling is also available with pre and post event data saving options In standard synchronized sampling the sampling can be set to repeat for a fixed interval of time after the sampling has been started or continuously until a stop command is sent In burst sampling the duration of the burst and time between bursts is configurable The sampling repeat interval is limited to one day In event based sampling the data will be continuously sampled but only recorded when it meets t
91. power supply other than the one specified the device or an external supply that is outside of the device operating range could result in permanent damage to the device Or it may just not work 1 4 node internal source select switch is set incorrectly When the node is manufactured it is set to internal battery operation but it can be configured to accept an external source When set to an external source the battery cannot be charged 1 5 node battery is dead If the node power source selector is set to internal and the node will not power on attempt to charge the node battery If the battery needs to replaced contact Technical Support See Technical Support on page 114 1 6 node battery fault If the battery charge indicator on the node is only dimly illuminated when charging is attempted a battery fault condition has occurred Unplug power and then plug it back in The indicator should turn on brightly indicating charging 1 7 sensors are drawing too much current The node battery can only supply a limited amount of power to the connected sensors If an over current condition occurs the node will shut down Consider powering the node or sensors with an external source wa LORD MicroStrain 107 SENSING SYSTEMS Node Commander Software User Manual Support Problem Possible cause and recommended solution 1 8 node or gateway is damaged If all power settings and connections have been verified and the node is still un
92. r methods of establishing communication with the node such as adding the node manually works only after boot up is complete and the node is in the idle state va LORD MicroStrain SENSING SYSTEMS Node Commander Software User Manual Node Communication 6 1 Automatic Node Discovery l l l l l l l l i i Automatic node discovery only works in some boot up modes such as the normal boot mode When the node is set for normal boot mode and powered On the device status indicator on the node will flash rapidly and then pulse in l l one second intervals thereafter If any other indicator behavior is observed the node may be configured for a different mode If the node is in another boot Mode it can be bypassed by toggling the node ON OFF switch rapidly three l times and then leaving it in the ON position for normal power up l l l l 1 After establishing communication with the gateway right click on the gateway name in the Controller window and select Add Node Node Discovery lt gt ESE Monitor Mode Reverify Base Station Add Nodes Configure Add Single Node Node Discovery Scan Network Beacon Network Broadcast za Remove Base Station Figure 30 Adding a Node in Node Commander 2 Turn the node ON with the ON OFF switch During power up the node will transmit a message with its operating frequency This will occur within a few seconds 3 When the device st
93. rement being made d PGA Settings These settings determine what gain is applied to the sensor measurement and sets the position of the no load baseline measurement for the sensor signal Only available for differential input channels with gain amplifiers e Calibration Values Includes the slope offset scale and formula used to convert the sensor reading to engineering units The slope and offset can be determined from the sensor manufacturer calibration data or through a calibration process aap ada T FEER Input Amplified Samples Wireless Samples c signal signa bits Communication bits Units o oe d PGA Settings input range Cass Samo chamai Hardware Offset 47k Units Strain gt Stran wizard A D Value bits Click Strain Wizard to run the Strain Wizard Calibrated Value Bits to uStrain JR 0 e Slope Offset Conversion Formula output slope bits offset Effective Range 0 to 4095 pStrain Figure 9 Channel Setup Z4 LORD MicroStrain ie SENSING SYSTEMS Node Commander Software User Manual Quick Start Setup and Operation 3 5 Sampling Settings Depending on the type of node being used Node Commander offers up to four sampling modes Streaming Synchronized Sampling Low Duty Cycle and Datalogging Some modes have user configurable settings for sample rate sample duration event based sampling beaconing
94. rent menu options and views Some have a settings menu before data acquisition begins and may include a data list view and or a graph view The following is an example of Synchronized Sampling 1 Right click on the node name and then Sample Synchronized Sampling 2 Inthe Synchronized Sampling window select the destination folder for the data in the Save Location field 3 Select Apply Network Configuration and then select Start Sampling Save Location C ProgramData McroStrain NodeCommander Data r Nodes 1 Type Active Channels Sample Rate Sweeps of Bandwidth Status Node 372 V Link URS 1 512Hz Unlimited 25 024 Ready to Start Network Bandwidth 25 02 Figure 11 Node Sampling Settings Za LORD MicroStrain 20 SENSING SYSTEMS Node Commander Software User Manual Quick Start Setup and Operation 4 Closethe Syncronized Sampling window by clicking the window X in the upper right The Sampled Data window is behind it The default view is the Data Grid view Use the symbol next to the node heading to view the data statistics Figure 12 Sampling Data Grid View 5 Select Graph from the View Mode field and then click on the Node name to view a graphical representation of the data 6 Toend sampling close the Sampled Data window by clicking the red and white X on the window tab and select Exit Stop Nodes Figure 13 Sampling Data Graph View wa LORD MicroS
95. responsive contact Technical Support See Technical Support on page 114 2 1 node or gateway has no power 2 COMMUNICATION Verify the node and gateway have power applied and applicable power switches are on Power is indicated on both devices by a no communication to status indicator LED the gateway or node 2 2 gateway has no communication with the computer Verify gateway communication in the software Check remove and reconnect communications and power cables as applicable e For serial gateways verify the COM port setting e For USB gateways verify the drivers are installed on the computer included with Node Commander and that the software has had sufficient time to detect it For Ethernet gateways use Live Connect to verify communications on a DHCP network Check that the extended timeouts are enabled in the Node Commander Edit Preferences menu under Devices Once communication has been established the network configuration can be changed 2 3 node cannot be configured Observe the node status indicator LED to determine what state it is in boot idle sample or sleep If the node is sampling or sleeping it cannot be configured In Node Commander execute the Stop Node command to put the node in idle state and allow configuration to occur If the user inactivity timeout is set very low the configuration menu will have to be entered quickly before the timeout occurs and puts the node back in a sa
96. s Post event duration hi seconds Trigger Source Trigger Operation Trigger Value V Channel 1 greater than gt 400 v E i 5 t V Channel 1 v less than lt X 100 y cremas Steal Sindvonzed Saving on Duty cyde Josen 7 ta Sampling Settings T EE F Channel 1 v greater than gt Y 4000 00 F Channel 1 greater than gt M 4000 00 E Channel 1 M greater than gt Y 4000 00 E Unlimited Sample Duration Time Duration 4062 5 sec Channel 1 greater than gt Y 4000 00 E Channel 1 v greater than gt Y 4000 00 Percent of Total Bandwidth 0 78 F Channel 1 Y greater than gt Y 4000 00 Event Driven Sampling Enable Configure Figure 77 Event Based Sampling Settings wa LORD MicroStrain 87 SENSING SYSTEMS Node Commander Software User Manual Sampling Modes and Settings 9 6 Bandwidth and Sample Rate In general when determining what sample mode and rate is most suitable for the application consider the following e Increasing the sample rate reduces the system bandwidth and therefore the number of nodes that can be reporting simultaneously e Increasing the sample rate increases the duration the node is on over time and therefore reduces battery life e Some sampling modes such as Streaming which is continuously recording data will use more bandwidth and battery power than fixed interval or event driven modes such as Low Duty Cycle and Event Drive
97. scc Ha mahaharap aaa 117 Ae Lo oci o ttt AM AA 118 Z LORD MicroStrain SENSING SYSTEMS Node Commander Software User Manual System Overview 1 Wireless Sensor Network Overview The LORD MicroStrain Wireless Sensor Network is a high speed scalable sensor data acquisition and sensor networking system The system consists of wireless sensor interface nodes a data collection gateway and full featured user software platforms based on the LORD MicroStrain Lossless Extended Range Synchronized LXRS data communications protocol Bidirectional wireless communication between the node and gateway enables sensor data collection and configuration from up to two kilometers away Gateways can be connected locally to a host computer or remotely on local and mobile networks Some gateways also features analog outputs for porting sensor data directly to standalone data acquisition equipment The selection of available nodes allows interface with many types of sensors including accelerometers strain gauges pressure transducers load cells torque and vibration sensors magnetometers 4 to 20mA sensors thermocouples RTD sensors soil moisture and humidity sensors inclinometers orientation and displacement sensors Some nodes come with integrated sensing devices such as accelerometers System sampling capabilities are IEEE 802 15 4 compliant and include lossless synchronized sampling event and burst sampling streaming and data logging One g
98. ser Manual Sampling Modes and Settings 9 2 4 Using the Beacon In synchronized sampling the beacon feature is used to coordinate sampling and transmission timing between multiple nodes The primary purpose is to avoid data collisions and guarantee timing between samples from different nodes The beacon cannot be used in any another sampling mode When the beacon is enabled the gateway broadcasts a data message once every second containing a Coordinated Universal Time UTC time stamp and is used to update each node s real time clock RTC This continuous synchronization beacon coupled with the accuracy of the gateway and node clocks 3 ppm drift provides a node to node synchronization of 32 microseconds The gateway receives the UTC from the host computer so the host must be connected to a UTC time server to achieve that accuracy There is some lag inherent in the Microsoft Windows distribution of the UTC This dictates the overall accuracy of the time stamp but the synchronization times between the gateway and nodes will be consistent because of the accuracy of the embedded RTC clocks Nodes must be on the same transmission frequency channel as the gateway to receive the beacon broadcast command It is recommended that the beacon be disabled when not performing synchronized sampling or when not needed to minimize radio interference To enable and disable the beacon right click on the gateway name and select the appropriate co
99. stom f calibration Table 4 Example Internal Sensor Types Za LORD MicroStrain ef SENSING SYSTEMS Node Commander Software User Manual Sensor Settings External sensors can be attached to any channel that is applicable to the configuration of the sensor Table 5 Example External Sensor Types describes example sensors units and calibration options channel type analog differential input analog single ended input thermocouple example external sensors strain gauges in full half quarter and custom Wheatstone Bridge configurations other Wheatstone Bridge sensors such as some pressure sensors some force sensors some mass sensors some displacement sensors some accelerometer some temperature sensors 4 20mA sensors sensors with voltage outputs referenced to the system ground thermocouples strain volts A D value custom G force A D value volts custom English and metric measurements for mass pressure force distance and temperature volts A D value custom temperature A D value custom calibration options calibration wizard user entry from manufacturer data lab or field calibration user entry from manufacturer data lab or field calibration user entry from manufacturer data lab or field calibration user entry from manufacturer data lab or field calibration Table 5 Example External Sensor Types Za LORD MicroStrain 58 SENSIN
100. such as the gateway and node menus are accessed by right clicking on the device name in the Controller window All actions available for the particular device can be found in its menu and will vary between device types Settings will only be applied to the selected device e ICON TOOLBAR provides quick access to the most common commands e ACTION LOG displays command execution information including errors For example the action log will display confirmation of device verification and an error if it cannot be verified when requested Information about configuration testing and sampling tasks are also displayed after commands are executed Refer to the log to determine the current status of the system e STATUS BAR displays the Node Commander program status This menu can be hidden using the header row View menu SAMPLING WINDOW displays the data being acquired from actively sampling node The sampling window is only displayed when sampling has been activated and the display varies depending on the sampling mode Some modes include a graph view and a data view while others include only one va LORD MicroStrain NG SENSING SYSTEMS Node Commander Software User Manual Software Overview 2 2 Software Installation To install Node Commander on the host computer complete the following steps 1 Insertthe CD into the host computer 2 Follow the on screen prompts The Node Commander software includes hardware drivers requir
101. t is the value where the line that represents the relationship in a graph crosses the y axis The equation of a straight line is y mx b where xis the x axis coordinate yis the y axis coordinate mis the slope and bisthe offset Ping A byte is transmitted by the gateway to the node and the node responds by echoing the byte indicating communication exists between them PGA A Programmable Gain Amplifier is an electronic device used to amplify small electrical signals Za LORD MicroStrain 119 SENSING SYSTEMS Node Commander Software User Manual References Range Test a continuous string of pings used to validate communication between the gateway and the node over distance and obstruction Read Write EEPROM commands transmitted to the node to read or write parameters stored in the node s operating system Real Time Clock RTC a computer clock that keeps track of the current time Resolution in digital systems the resolution is the number of bits or values available to represent analog values or information For example a 12 bit system has 4096 bits of resolution and a 16 bit system has 65536 bits RFI Radio Frequency Interference RSSI Received Signal Strength Indication is a measurement of the transmission power in a radio signal The units are decibels per meter dBm RS232 a serial data communications protocol Sensor a device that physically or chemically reacts to environmental forces and conditions and produces a
102. ta is missing the gateway or node or incorrect alt 2 1 S node or node or no com to gateway is gateway has node or turned OFF no power gateway T2 external power source OFF or miswired 2 2 gateway has no com with computer a2 sampling settings are incorrect 1 3 wrong power supply or voltage 2 3 node cannot be configured 3 3 sampling has not started 1 4 node internal source select incorrect 2 4 node is out of range 3 4 sensor is not connected correctly 1 5 node battery is dead 2 5 node is not in normal boot mode 3 5 sensor channel not configured correctly 1 6 node battery fault 2 6 node is sampling 3 6 sensor calibration is invalid 7 sensors are drawing too much current 2 7 node is sleeping 1 8 2 8 node or gateway or gateway is node is damaged damaged Za LORD MicroStrain 106 SENSING SYSTEMS Node Commander Software User Manual Support Problem Possible cause and recommended solution 1 1 power switch is off 1 POWER The status indicator LED on the device will be off Turn the gateway or node does device on and the status indicator LED should illuminate not turn on or node 1 2 external power is off or miswired does not charge Verify the device power source is connected correctly and turned on 1 3 wrong power supply Using a
103. tablish communication with the gateway see Gateway Serial Communication on page 24 2 Rightclick on the gateway name and select Configure Configure Base Station and adjust the Baud Rate as needed Model WSDA Base 102 RS 232 Label Microcontroller 18F67K90 40 MHz Part Number 6307 1020 Radio Type CC2420 2 4 GHz Band Serial Number 1020 31531 Com 6 Firmware Version 3 06 Operating Frequency 15 2 425 Ghz Transmit Power 16 d m 39 mw Extended Range XR Baud Rate 921600 Figure 27 Setting the Baud Rate Za LORD MicroStrain 33 SENSING SYSTEMS Node Commander Software User Manual Gateway Settings 5 5 Analog Gateway Configuration In addition to normal digital communications such as serial and Ethernet analog gateways have eight channels of configurable outputs that recreate selected sensor input channels of connected nodes The analog gateway channels are mapped to a node sensor channel through the Node Commander Configure Node menu This menu window is accessed by right clicking on the node heading in the Controller window and selecting Configure Configure Node The Analog Pairing menu is used to assign node channels to analog gateway outputs by entering the node address and channel number Channels can be assigned from multiple nodes Further configuration options such as enabling ano signal timeout and selecting signal processing modes are available in this me
104. tage EU ratio to the node input voltage EU ratio to determine the equivalent node FSO value x 1 9365V 250psi 3V x 250psi 3V 1 9365V x 387 3psi The node converts voltage inputs to A D values For a 16 bit node there are 65536 A D values over the 3V input range Divide the node EU FSO by the A D value to get the ratio or slope of EU to A D value 387 3 psi 65536 bits 0 00591 slope Once the slope is entered the sensor offset value can be measured in a data sampling Session such as streaming Sample the sensor channel with no load applied and read the EU value Enter this as a negative value for the offset in order to have it subtracted from readings va LORD MicroStrain i SENSING SYSTEMS Node Commander Software User Manual Sampling Modes and Settings 9 Sampling Modes and Settings Depending on the type of node being used Node Commander offers up to four sampling modes Some modes have user configurable settings for sample rate sample duration event based sampling beaconing and data logging schemes Other settings are automatic depending on the number of active channels and other variables Table 6 Sampling Mode Settings Summary describes the features and settings available in each mode Streaming a general purpose sampling mode with very little latency between the sampling and the data display Sampling rates are automatic although duration is configurable Streaming mode does not support time stamping
105. teways are installed and the surrounding environment Refer to the device user manuals for installation recommendations Maximum Setting Power Output Range Extended 16dBm 39mW Standard 10dBm 10mW Low OdBm 1mW Table 1 Transmit Power Settings The transmit power setting for the gateway is found in the gateway Configure Base Station menu Label Microcontroller 18F46K20 40 MHz Radio Type CC2420 2 4 GHz Band Serial Number 1040 0404 Com 3 Firmware Version 3 03 Operating Frequency 15 2 425 Ghz 6 dim 39 mw Extended Range OR 10 dBm 10 mw Standard Range 0 dBm 1 mw Low Power LP Figure 26 Transmit Power Setting Za LORD MicroStrain 32 SENSING SYSTEMS Node Commander Software User Manual Gateway Settings 5 4 Setting the Serial Baud Rate Changing the RS232 gateway baud rate may make it inoperable e The RS232 gateway is set to communicate at a 115 200 baud rate when it is manufactured For most computer serial ports 115 200 baud is the maximum supported rate On these computers if the gateway is set to 921 600 baud it will no longer be able to communicate with the computer To restore the gateway will need to be connected to a non standard high speed port or the returned to the factory for reconfiguration e The RS232 gateway does not support Synchronized Sampling unless it is set to 921 600 baud and used with a high speed serial port 1 Open Node Commander and es
106. th 10V excitation 86 07mV Application parameter sensor excitation in application 3V supply from the node DESIRED OUTPUT engineering units EU psi CALCULATIONS Because the sensor will be powered from the node with 3V and the sensor manufacturer calibrated it a 10V the manufacturer full scale output FSO value needs to be scaled to 3V 3V 10V 86 07mV 25 82mV Select a gain and offset scale value appropriate for the sensor Because the signal is positive going in this example application the low offset scale will provide the largest range With the low offset selected the effective input range of the node is 75mV to 3V see Differential Input Gain and Offset on page 65 or 2 25V Calculate the highest gain possible by dividing the actual input range by the sensor FSO 2 25V 25 82mV 87 The closest gain setting below optimal gain for a V Link LXRS is 75 20mV Using a higher gain value would exceed the input voltage capacity of the node when the sensor is at higher pressures This selection makes sense because the approximate input range designation for a gain of 75 is 20mV a 40mV delta minus 10mV for the low offset which is close to the FSO range of the sensor Za LORD MicroStrain 78 SENSING SYSTEMS Node Commander Software User Manual Sensor Settings Multiply the sensor FSO by the gain setting to get the sensor voltage after amplification 75 25 82mV 1 9365V Scale the gained sensor input vol
107. the data Click on the node to view the graph for that node Click again to hide it ee a verso 92014 T16 54 05Waster 02 19 2014 T16 54 05 ctv C en esee 1 348 xf dis un Ke Base Station Com 3 Monitoring D Node 30252 Sync 5 Node 31463 Sync Aribe Nok YAisZoomi 100 5 amp Node 30252 Node 31463 4E 4 45000 View Mode Graph 400004 a 350005 30000 25000 g 200004 c 15000 10000 View Graph Key 000 Remove Graph e D 1 1 1 D 8042 8043 8044 8045 8046 8047 8048 8049 8050 8051 Figure 82 Synchronized Sampling Graph View a Available Nodes Click on the node to display the graph for that node Click again to hide it Right click on the node name for more menu options such as stop nodes and save stream b Axis range Select the X axis width and Y axis zoom percentage or used the Auto check box for automatic scaling c Graph the node graph shows the sampled data Each active channel is displayed as a different color The X axis is time in seconds and the Y axis in the A D value bits Right click on the graph for additional menu options such as View Graph Key Pan Zoom Pause and Remove Graph d View menu Select between Data Grid and Graph views e Data file The location and size of the data file as data is added View the data in CSV format with the Open File button f End sampling The red X is used to
108. ties and the O to 3V input range of the node The signal produced after gain is applied to the sensor at full scale must not exceed the input range of the node e Offset Scale The scale setting positions the no load measurement of the connected sensor within the O to 3V range of the node input The range of A D counts that corresponds with the O to 3V node input depends on the resolution of the node For example a 12 bit node will have a full scale bit range of 4096 and a 16 bit node will have a full scale bit range of 65535 A mid range setting positions the baseline offset in the middle of the range 1 5V or full scale bits 1 2 and is used for sensors with negative and positive going signals The low range setting positions the baseline offset in the bottom quarter range 75mV or full scale bits 1 4 and is used for sensors with mostly positive going signals The high range setting positions the baseline offset in the top quarter of the range 2 25V or full scale bits 3 4 and is used for mostly negative going signals 3V 65535 Streaming Graph Real time Streaming Graph Com 3 Node 31463 Frequency 24 ENS highscale offset EINE sensor effective range for positive going signals increased signal gain uses more of midscale offset range andincreases measurement resolution Be REG E low scale offset lt V ip aes 1 1 sensor noload measurement nna vn OV 0 auto bala
109. train 121 SENSING SYSTEMS
110. train 21 SENSING SYSTEMS Node Commander Software User Manual Quick Start Setup and Operation 3 7 Viewing Sensor Data Acquired data is stored in CSV format and can be viewed with Microsoft Excel Quattro Pro Open Office and other CSV editors and spreadsheet programs The files can be found in the default directory or the location specified at the beginning of sampling as applicable The default directory is C ProgramData Microstrain NodeCommander SampledData Use Windows Explorer or the Node Commander File menu to access the files Different sampling modes will output different file types and they will be categorized in separate folders by sampling mode and then further categorized by date session and or node serial number Synchronized sampling and low duty cycle files are found in the Sampled Data folder Datalogging files need to be downloaded from the node before they are available for viewing and can be accessed through datalogging menus as well as the File menu They are stored by default in the Downloaded Triggers folder Streaming data is stored in the Streaming folder b d i Explore Data Directory i Upload Data to SensorCloud X Exit E O Node372 Edt View Tools Help Sa Open Includeinlibrary Sharewith gt Bum Ji Downloaded Triggers Ji Sampled Data Ji Streaming ACC m i MicroStrain NodeCommander Data Sampled Data session 09 30 2013 T19 46 08 IN
111. ular gateway Monitoring detects low duty cycle and synchronized sampling and displays the sampling window This is useful if the node was configured to start sampling on boot up or if the data acquisition screen was closed without stopping the node It is a way to enter the data and graph view windows after data acquisition has already begun The gateway will only monitor nodes that are on the same frequency channel that it is on To monitor a node right click on the gateway name and select Monitor Mode Monitor Mode Reverify Base Station Add Nodes Configure L Beacon gt Network Broadcast b Remove Base Station Figure 96 Monitor Mode Za LORD MicroStrain 104 SENSING SYSTEMS Node Commander Software User Manual Data Acquisition 10 7 Viewing Sensor Data Acquired data is stored in CSV format and can be viewed with Microsoft Excel Quattro Pro Open Office and other CSV editors and spreadsheet programs The files can be found in the default directory or the location specified at the beginning of sampling as applicable The default directory is C ProgramData Microstrain NodeCommander SampledData Use Windows Explorer or the Node Commander File menu to access the files Different sampling modes will output different file types and they will be categorized in separate folders by sampling mode and then further categorized by date session and or node serial number Synchronized sa
112. unications with the gateway 2 Power on the node 3 Right click on the gateway name in the Controller window and select Add Single Node 4 Enter the node address and select OK If the node is not found an error message will appear and provide the option to scan for the node on other frequencies 5 If the node is found verify communication by expanding the node information list with the symbol next to the node name If the information list appears communication has been established KA Node Command p Monitor Mode Reverify Base Station Add Nodes Add Single Node Configure gt Node Discovery Scan Network Scan Frequencies Beacon gt Network Broadcast LAL Remove Base Station i Add Node Base Station 3 31463 Node is assumed to be on channel 15 2 425 Ghz ok came Figure 32 Adding a Node by Address va LORD MicroStrain o SENSING SYSTEMS Node Commander Software User Manual Node Communication 6 3 Scanning for Nodes by Address Nodes can found by scanning an address range The gateway will search for nodes on the frequency it is currently set to If the node is on a different frequency the gateway frequency must be changed in order for the scan to be successful See Transmit Frequency on page 31 for instructions on how to set the gateway frequency 1 Make the hardware connections and establish communications with the gateway 2 Power o
113. units DESIRED OUTPUT engineering units EU force Ibs PROCEDURE 1 Enter the node Channel Configuration menu by right clicking on the node name in Node Commander and selecting the Configure option and Channels tab Select the check box for the channel the sensor is installed on and then select the Configure button for that channel Channel streaming Synchronized Samping Low Duty Cyde Datalogang Power nr info Physical Units Conversion Data Output Units Did A D Value bits Figure 61 Node Configuration Menu wa LORD MicroStrain 69 SENSING SYSTEMS Node Commander Software User Manual Sensor Settings 2 Inthis example use the following settings Figure 62 Channel Settings a Coefficients Class A D value b Conversion Coefficients Units Bits c PGA Settings Input Range 20mV expected sensor range d PGA Setting Mid scale for positive and negative going signals 3 Selectthe Auto Balance button to tare the no load value of the strain gauge Click OK to apply the node settings and exit configuration Samples Wireless Samples bits Communication bits PGA Settings Conversion Coefficients Input Range Cess Hardware Offset 5095 Units A D Value bits ie 31584 RTT Output set to bits feriae No conversion will be applied O High Midscale Lo ate citi Calibrated Value Slope 1 offset 0 Conversion Formula output slope bits offset Effective Range
114. user selectable sampling duration sampling duration Synchronized burst duration Sampling e node and burst duration dependent user selectable event based sampling e on off trigger levels pre post event logging logging scheme e log only transmit only log and transmit beaconning e system wide clock synchronization sample rate each active paaa e node dependent user selectable e node dependent user selectable or sampling duration MN Low Duty Cycle unlimited event based sampling e on off trigger levels post pre event logging logging scheme e Jogonly transmitonly log and transmit only transmit only log Jogonly transmitonly log and transmit transmit sample rate each active node dependent user selectabl channel p ctable e node dependent user selectable or continuous multiple node trigger e starts node sampling simultaneously Table 6 Sampling Mode Settings Summary Za LORD MicroStrain 81 SENSING SYSTEMS time between bursts Datalogging overall sampling duration Node Commander Software User Manual Sampling Modes and Settings 9 1 Streaming In streaming mode sample rates are automatic based on the number of active channels Table 7 Streaming Sample Rates describes the automatic settings Sampling can be set to repeat for a fixed interval of time after the sampling has been started or continuously until a stop command is sent The data is transmitted continuously during sam
115. ut over sensor range 75mV to 4 5V This setting will not work because the node input voltage is outside of the O to 3V range Za LORD MicroStrain 66 SENSING SYSTEMS Node Commander Software User Manual Sensor Settings 8 3 Sensor Calibration Many sensors require calibration coefficients to accurately report measurements Methods for determining the calibration coefficients depend on the type of sensor measurement and application The Node Commander software facilitates multiple calibration methods Calibration calculators for some applications are also available by contacting LORD MicroStrain Technical Support See Technical Support on page 114 e Sensor manufacturer s specifications or calibration The slope and offset values or the data to derive them are provided with the sensor by the manufacturer to prove its accuracy and describe expected voltage output Some sensors are calibrated individually while others are manufactured to a standard sensitivity value plus or minus some tolerance which is provided in the device specifications e Sensor lab calibration If the manufacturers calibration is not available or outdated calibration of the sensor can be performed with calibrated equipment in a controlled environment The calibration equipment and process will typically be traceable to an industry standard such as NIST or ASTM in the United States Fixed loads are applied to the sensor while the sensor output is recorded The
116. values and gain settings See Channel Configuration on page 50 for menu interface information Sensor readings can be displayed and recorded in volts A D value bits or engineering units There are preset measurement units as well as a user defined field Because the wireless sensor System is digital the analog voltage readings from the sensors are converted into a digital equivalent value based on the volt to bit scale of the internal analog to digital voltage converter A D converter A D value can be read directly or further converted to engineering units by applying conversion values and a conversion formula Some sensors also require calibration Calibration incorporates coefficients that normalize the sensor output to a known reference device in order guarantee accuracy of the sensor readings See Sensor Calibration on page 67 for more information Internal sensors are assigned to a specific channel at the factory and the channel number cannot be changed Some internal sensors are also calibrated at the factory The calibration values can be changed Table 4 Example Internal Sensor Types describes some internal sensor types units and calibration options example 3 calibration options internal sensors G Force factory calibration accelerometer A D value user entry from lab or field custom calibration calibration not required temperature temperature A D value factory calibration user entry from lab or field cu
117. wed by selecting the symbol Node Commander remembers nodes and gateways that have been communicated with previously They will appear on the list when the software is started however may not actually be ready for configuration If the symbol next to the node name is selected an error will appear if the node is not connected To reconnect with a previously connected node see Reestablishing Communication on page 41 Node Commander Ele Edit View Launch Application Help u amp Base Station Com 3 S Node 30555 Ill Model V Link Mii Options LXRS 4 S N 2433 30555 a Firmware 8 18 e Memory Full 0 id Num Triggers 0 amp Base Station Com 3 Gi X9 Node 31463 Node info not acquired name and serial number node information node communicating node not connected Figure 29 Node Communication There are several methods to establish communication with a new device depending on how complicated the wireless sensor network is and what is known about the device 1 Automatically with the Node Discovery feature 2 Manually by entering the node address 3 Byscanning a range of node addresses In Normal boot mode the node will power on send a status message and then enter idle state to wait for a command Automatic node discovery only occurs in the status message phase of the boot up If the node is already in idle state or in any other state node discovery will not work Using othe

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