Analogger Manual.cdr
Contents
1. t0 Off On Off t1 GMT 08 00 GMT 12 00 to GMT 13 00 The a0 term dictates whether or not analog logging is enabled To record the analog inputs this must be set to On The a1 and a2 parameters determine how the analog data is saved while b1 and b2 indicate the thermistor Beta constant for temperature calculations should one of the temperature modes be selected For instance if the A1 pad is wired to a thermistor with Beta constant of 3800 while the A2 pad is measuring a throttle voltage then the file would be modified with the following text 0 On ati C a2 V b1 3800 The resulting log file for analog data would then display two columns with the first column formatted in degrees Celsius and the second formatting as 0 3 3V A1 A2 33 4 1 12 33 6 1 33 33 5 1 59 If instead we wanted the results to be saved in degrees Fahrenheit and with the throttle voltage showing as a number from 0 1023 rather than as a voltage value then we would set 11 a0 On al F a2 B b1 3800 In which case the same signals would save as Al A2 92 1 347 92 5 412 92 3 493 0 is the counter index and it is incremented each time a new set of log files is created The first file will save as CAlog_0000 txt the next will save as CAlog_0001 txt etc This counter index can be preloaded to any value or reset to zero by manually changing the number at 0 The counter value will be appended to all data files saved so if both the2. The Cycle Analogger User Manual Revision 1 0 The Cycle Analogger Rev 1 0 The Cycle Analogger is designed and manufactured in Canada by Grin Technologies Ltd 20 E 4th Ave Vancouver BC Canada V5T 1E8 ph 604 569 0902 email info ebikes ca web http www ebikes ca Authors Mark Stephens Justin Lemire Elmore Copyright 2012 2 1 2 2 3 1 3 2 3 3 4 1 4 2 4 3 4 4 5 1 5 2 5 3 5 4 5 5 Table of Contents Introduction kn Ka KAANAK oh oe eo SR NG 3 Installation 0428k see ceeeeeveke en 3 Electrical Wiring aaa an 3 Mechanical Installation 1 0 0 0 eee ee 4 Basic Usage 02 cee eee ees 5 Data SAVING RA LAAN tg 5 LED Status Indicator aaa 6 Data Retrieving 2 3 maman be KAKA GE Sees BKA 6 Advanced Features 7 File Naming Conventions 7 Analog 8 Thermistor Inputs T Use as a General Purpose Logging Device 8 Firmware Updates 2 000 0 ee nnana 8 Limitations ccc caer sed eed oe sew aes 9 Card Insertion 2 88 8 paa Eka Ba eee we wk 9 Card VINGO sus DA Schad Gord LANG NGAGE 9 ENDOSING a ack 4 eed KAN See Rete eke eet 9 GPS Locking sce ke Ka BE Re DEN ee Rees 9 Battery Replacement 000000 ee enue 10 Specifications 00 0c eee 10 APPENDIX A Settings txt file 11 APPENDIX B Analog Input Pins 13 1 Introduction The
3. Cycle Analogger is a compact storage device designed to take the data output stream from a Cycle Analyst and record it on a microSD flash memory card allowing for post trip analysis of a vehicle s power consumption and performance data The optional GPS version includes a built in Global Positioning receiver that simultaneously stores the vehicle s position information to the memory card as well This makes it possible to localize the Cycle Analyst s output to a certain point on the trip and visualize the vehicle statistics in a mapping program such as Google Earth 2 Installation 2 1 Electrical Wiring If the Analogger device is purchased at the same time as the Cycle Analyst CA then we will have pre wired the CA to include both a communications cable and a DC power plug for connecting to the Analogger This allows for the two devices to plug straight into each other with no additional wiring or soldering required TRS Signal Cable The Analogger in this arrangement receives power directly from the vehicle s battery pack via the Cycle Analyst and hence will turn on and off when the CAis turned on and off If the Cycle Analyst is not already wired for Analogger connection then it will be necessary to open up the CA s enclosure and solder the included TRS Tip Ring Sleeve cable jack to the appropriate points All CAdevices since firmware V2 1 have a serial data stream on a pad labeled Tx The ring red wire
4. must be soldered to the Tx pad while the sleeve black wire attaches to a G pad G Tx Ui boa RS En 000000000009 Solder Red to Tx Black to G The DC power for the Analogger may be supplied from the battery pack via the Cycle Analyst or it can be hooked up to the battery or other 12 100V power supply through any other means as well The DC power input is a 5 5 x 2 1mm power jack and it will be ground referenced to the Cycle Analyst ground The Analogger has an efficient onboard DC DC converter so the current consumption is not constant but will vary inversely with the supply voltage Analogger Current Draw 30 T Analogger No GPS g T 25 HI Analogger plus GPS M E 20 B15 oco 12V 100V 31 5 a ee o a 0 100 Voltage 2 2 Mechanical Installation The Analogger circuit fits inside a compact enclosure with flanges on the lid to allow for mounting versatility if required It is also small and light enough to easily tuck inside a pocket or handlebar frame bag The unit itself is not waterproof and so provision should be taken when riding in the elements to keep the Analogger protected against water exposure 3 Basic Usage 3 1 Data Saving The Analogger has a 3 position sliding switch to control operation The center switch location is OFF The device is turned on in Logging mode by moving the switch to the right towards the signal port In this state the An
5. Cycle Analyst 13 Analog Formatting The reading from the analog pads can saved into one of four possible formats via the settings txt file These options are B Binary a 10 bit integer from 0 1023 V Voltage the direct voltage value from 0 00 to 3 30V C Celsius scales a 10K thermistor into degrees C Fahrenheit scales a 10K thermistor into degrees F When either of the temperature options are chosen then the Analogger does a computation of the temperature based on the Beta constant for the thermistor and records the data directly in degrees The user can set the appropriate Beta value in the settings txt file the default value being 3970 14
6. GPS module and the analog files are enabled they will also share the same counter number as the CAlog file The text string following each of the 1 2 and 3 parameters allows for the customization of the prefix for each file name This is especially useful if someone has multiple Analogger devices to avoid creating log files with identical names The string must be enclosed in double quotes must be less than 200 characters long and should only contain valid file name characters Finally t0 and t1 are the time stamp parameters and only apply if a GPS module is enabled In that case the current time and date as supplied from the GPS will be appended to each file name for easier identification and sorting In order to apply an hourly offset to account for a local time zone or daylight savings then the t0 parameter should be switched to On and t1 should be set to the local time zone For instance a rider in New York Eastern Time Zone GMT 5 would use t0 On On Off t1 GMT 05 00 GMT 12 00 to GMT 13 00 In the summer during daylight savings this would be t1 GMT 04 00 GMT 12 00 to GMT 13 00 A rider in France would use GMT 01 00 New Zealand would be GMT 12 00 And indeed our friends in Newfoundland can use GMT 03 30 for the half hour offset 12 APPENDIX B Analog Input Pads Enabling the ADC The analog input functionality is turned ON by setting the a0 parameter to On in settings txt file Once the analog f
7. NTC Thermistor R8 and R9 Pullups Remove if Necessary Soldering Required If analog data is enabled it will be saved in a separate data file on the card named ADClog xxxx A full explanation of the analog input functionality and appropriate configuration is given in APPENDIX B 4 3 Useasa General Purpose Logging Device Although the Analogger was designed around the specific needs of the Cycle Analyst it can be easily used to log serial data from other instruments with a 9600 baud output as well For instance you could in principle get the regular non GPS version of the Cycle Analogger and still record the data from a 3rd party GPS device with a TTL output by soldering wires to the header pad where the onboard GPS module would normally attach 4 4 Firmware Updates It is possible to reprogram the Analogger device with the most recent firmware via the USB port This way the device can be kept current with the most recent functionality and possible bug fixes Some 3rd party downloads are required and the full reprogramming details are explained in a separate document available from the ebikes ca webpage 5 0 Limitations 5 1 Card Insertion The insertion and removal of the small microSD memory card can be finicky For removal press the back of the card in and it will release a latch causing the card to pop out When re inserting the card be sure to make sure that it is properly slid inside the
8. alogger will create a new log file on the microSD memory card and begin recording any serial data coming from the communications port to this file The data will continue to be saved to the card until either the switch is moved back to center position or power is removed from the Analogger Signal from Cyce Analyst AY TY switch to Right for Data Logging By default the Cycle Analyst file will be named CAlog_XXXX where the number XXXX will increment with each new file and will contain the textlike this Ah v A s D 0 1920 52 79 5 19 17 27 1 9644 0 1962 49 30 18 89 18 00 1 9682 0 2004 49 12 18 85 20 60 1 9725 0 2046 49 04 19 02 21 88 1 9773 With a GPS module attached the GPS data will get saved at the same time to a separate file named GPSlog XXXX with NMEA formatting Details on each sentence can be found from the published NMEA standard An example GPS file text is shown here SGPGGA 013449 000 4916 6569 N 12306 0222 W 1 08 1 1 21 0 M 16 8 M 0000 5E SGPGLL 4916 6569 N 12306 0222 W 013449 000 A Ax42 SGPGSA A 3 04 27 02 14 09 12 20 17 2 2 1 1 1 9432 SGPGSV 3 1 12 09 56 240 27 04 55 121 33 27 51 217 27 12 42 297 29x75 SGPGSV 3 2 12 17 40 062 36 02 32 177 35 14 12 320 34 20 09 044 1847E SGPGSV 3 3 12 25 07 295 23 28 06 111 39 32 03 020 51 31 159 28 73 SGPRMC 013449 000 A 4916 6569 N 12306 0222 W 0 00 090711 A 65 S GPVTG T M 0 00 N 0 0 K A 13 3 2 LED Status Indicator There are2 or 3 LEDs on the
9. card carrier and not pushed in the gap above The card opening in the enclosure had to be wider than the card to allow for easier finger access but it means that it does not necessarily guide the card properly into place P Avoid Pushing E5 Card Into Gap 5 2 Card Vibration In cases where the Analogger is used in rough and bumpy terrain it s possible for the heavy vibration to cause intermittent contacts and lead to corruption in the data logging We recommend in this situation to have the Analogger in a padded bag or pannier for better shielding from shock 5 3 Exposure Because this is a small run device it uses a modified off the shelf enclosure which gives mechanical protection to the circuit board but not full environmental protection against the elements For use on long touring trips or exposure to all kinds of conditions we recommend further placing the Analogger in a plastic bag or sealed container 5 4 GPSLocking When the GPS device is first powered up it can take anywhere from 30 120 seconds before it will correctly lock to the satellite location Once it has found a fix an onboard backup battery maintains the location data so thatif it is turned off and on in the same location then a new GPS fix will usually take just a few seconds In locations with limited sky visibility between tall buildings tunnels forest etc the GPS receiver may have difficulty locking to the sat
10. device to indicate operational status GPS Status LED SD Card LED O power LED e Power LED Glows steady red when an appropriate power source is present e SD Card LED The green LED will blink at each instance that data is being succesfully written to the memory card This provides feedback that data is being logged correctly e GPS LED If the GPS module is included a 3rd LED indicates the GPS status Afast flash rate of 5 Hz indicates that the GPS is on but has not yet acquired a satellite location fix Once a location fix has been confirmed then the LED will flash at a much slower 1 Hz 3 3 Data Retrieving There are two methods for retrieving data stored on the Analogger a Remove the microSD memory card by pushing it with your finger to release the latch and then access the files with a card reader or b Flip the switch to the left towards the USB port and connect a USB Mini B cable between the Analogger module and a computer Removable SD Memory Card _ NES GG To PC UDe RX Mini Position for USB Cable In the USB state the Analogger behaves as a USB mass storage device enabling you to access the files as though they were on a removable drive without the need for a card reader External power is not required as the unit will be energized by the USB bus Once connected to a PC the files can be opened in a text viewer spreadsheet or processed with custom software 4 Adva
11. ellites and the GPS status LED will indicate this with a rapid 5Hz flash rate 5 5 Battery Replacement The coin cell in the GPS version of the Cycle Analogger is used to maintain GPS coordinate information even when device power is turned off Without a good battery installed the GPS functionality will not work properly The supplied cell should last between 3 5 years from the date of purchase and can be replaced with any similar CR2032 cell 6 0 Specifications Supply Voltage 12V 100V DC Max Supply Power 200 mW with no GPS 450 mW with GPS UART Input Signal 0 3 3V or 0 5V TTL 9600 Baud Analog Input Range 0 3 3V Flash Memory Type microSD or microSDHC Memory Capacity Up to 32 GB 1GB card included Dimensions 80 x40 x 20mm 10 APPENDIXA The settings txt file Various parameters of the Analogger s operation can be controlled with a text file that is stored in the root directory of the memory card If the Analogger does not detect a settings txt file on power up or the included file is corrupted then it will proceed to create one with default values The following are the list of default parameters along with their allowable values shown in square parentheses a0 Off On Off al B B V C F note B binary V voltage a2 B B V C F C Celsius F Fahrenheit b1 3977 0 to 9999 b2 3977 0 to 9999 0 0000 0 to 9999 1 CAlog_ 2 GPSlog f3 ADClog
12. nced Features There are many capabilities built into the Analogger design which can facilitate more advanced data logging applications 4 1 File Naming Conventions There is a setup txt file located in the root drive of the SD memory card that can be used to customize the file names This makes it easier for people with multiple Analogger devices to better keep track of which files originated from which vehicle As well if there is a valid GPS signal detected during the course of a save the Analogger will append a complete time stamp to the end of the file name making it much easier to relate the files to particular trips The details for customizing the file name are given in APPENDIX A 4 2 Analog and Thermistor Inputs The Analogger circuit board has two input pads that can be used for saving voltage data from additional signals as well This way it is possible to simultaneously log additional sensor data along with the CA information such as the user s throttle voltage motor or controller temperature vehicle incline air pressure or what have you Each of the analog pads can be configured as a general purpose 0 3 3V input or as a direct 10K NTC thermistor input for temperature sensing Use of these analog inputs requires soldering wires to the circuit board and modifying the enclosure to feed the wires through and hence requires being comfortable with electronics hacking General Purpose Voltage Signal Vi 10K
13. unction is enabled then the CA will save the voltage data present on pads A1 and A2 to a text file just like the Cycle Analyst data The timing of each voltage measurement is triggered by the arrival of a new line of data from the Cycle Analyst so the analog data will get saved at either 1Hz or 5Hz depending on the CA s data output rate If a Cycle Analyst is not connected then no analog data will be recorded either Analog Circuit The default input circuitry has both pads A1 and A2 connected with 1K pull up resistors R8 and R9 to a 3 3V bus This makes it easy to hook up a probe for temperature sensing by wiring a 10K NTC thermistor between the A1 or A2 pad and AGND The combination of a 1K pullup resistor with a 10K thermistor provides good resolution from 0 to about 160 Celsius 3 3V 10K NTC Thermistors R8 Signals V and V2 pr 1k Scaled 0 3 3V if needed naved F R9 le A1 A1 AGND AGND AGND 1 removed A2 AGND V2 Example Wiring for Two Temperature Probes Example Wiring for Two Voltage Signals If an active voltage signal is being measured then it would be advisable to remove the associated 1K pull up resistor on that channel Voltage signals that could exceed 3 3V should have an external voltage divider to scale the signal down to the 0 3 3V input range All voltage signals are measured relative to the same ground as the Analogger and
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