RSP1 Evaluation Kit User Manual
Contents
1. Parameter sample rate resolution max frequency resolution max speed response time S03 Hz Hz Hz km h km h ms 1 01 1 280 5 640 0 11 14 5 200 02 2 560 10 1 280 0 23 29 1 100 03 3 840 15 1920 0 34 43 6 67 04 5 120 20 2 560 0 45 58 2 50 05 6 400 25 3 200 0 57 72 7 40 06 7 680 30 3 840 0 68 87 3 33 07 8 960 35 4 480 0 80 101 8 29 08 10 240 40 5 120 0 91 116 4 25 09 11 264 44 5 632 1 00 128 0 23 0A 22 530 88 11 265 2 00 256 0 12 Note 1 response time on host interface Digital output depends also on params A03 and S02 Fig 15 Detectable speed depend on parameter S03 2015 RFbeam Microwave GmbH www rfbeam ch Page 22 24 RFbeam Microwave GmbH RSP1 Evaluation Kit User Manual Rule of Thumb for your application Use lowest possible amplifier bandwidth at highest possible sampling rate Using Serial Interfaces in parallel RSP_Scope connected to Debug Interface X7b and RSP_Terminal connected to Command Interface X7a may be used in parallel A 2 FTDI cable is required for this This RSP1 feature becomes important for debugging applications with a host CPU connected to the RSP1 Command Interface with the RSP_Scope connected to the debug port General Radar Installation Tips Radar for movement detection is a very reliable and robust technology It is insensitive to heat wind dust sunlight and other influences However there are some important issues to take into consideration2. Serial Debug Interface is also used for updating RSP1 firmware 2015 RFbeam Microwave GmbH www rfbeam ch Page 20 24 RFbeam Microwave GmbH RSP1 Evaluation Kit User Manual Background Information Doppler Signal Basics A moving object in range of a Radar sensor often called transceiver generates a low frequency output signal Frequency depends on the object speed Amplitude depends on distance reflectivity and size of the object Doppler frequency fais proportional to the object speed v 44 Hz fy km h a 44 Hz cosa aun moving object Radar sensor Note that the angle of the moving object reduces Doppler frequency I Q Doppler Signals I Q sensors like K LC2 K LC5 K LC6 and others produce 2 output signals that are phase shifted by 90 Main advantages e Forward Backward movement differentiation e Efficient interference suppression e Vibration suppression Fig 14 I Q signals left approaching right receding movement FFT Fast Fourier Transform Explanations go beyond the scope of this document Please refer to literature e g http en wikipedia org wiki Fast_Fourier_transform and to the RSP1 datasheet Fortunately RSP1 the user does not have to care about the details on FFT FFT represents in fact many narrowband filters that reduce noise amplitude RSP1 uses 256 point FFT resulting in 128 bins filters for each forward and backward movements Th
3. 120 i F backward speed Leo Fig 4 Initial RSP_Scope screen showing noise top and movement history bottom Virtual scope upper screen has logarithmic Y axis showing signal level Therefore noise looks very high Refer to the RSP datasheet for more explanations 2015 RFbeam Microwave GmbH www rfbeam ch Page 10 24 RFbeam Microwave GmbH RSP1 Evaluation Kit User Manual Interpreting Virtual Scope Display l l l l I i I I I I I i 128 120 110 100 90 80 70 60 50 40 30 20 10 O mW OD 3 wD FO BD WW 100 110 12177 FFT bins Fig 5 Person walking towards a two channel I Q stereo sensor Highest peak on right side shows speed of a person walking towards the sensor Peak on the left side is due to the sensor I Q inbalance and phase error Speed scale X axis is related to the 256 point FFT signal processing algorithm and represents the doppler frequency Positive frequency represents approaching negative frequency receeding object Please find more details on speed interpretation in chapter Background Information Y axis represents the signal level FFT magnitude in a logarithmic form The higher the reflectivity of the object the higher the level Level depends on e Size of moving object e Material of moving object e Distance of moving object RSP1 sets detection output if peak exceeds the red threshold sensitivity and if direction corresponds th the setting of parameter
4. This tool is a virtual oscilloscope and shows internal amplitude vs speed signals It also shows I and Q time domain signals All signals including FFT are processed by RSP1 chip and are sent via high speed serial interface RSP_Scope does only scale some values but does no signal processing RSP_Scope must be connected to connector X7b at 460800 Baud All explanations assume a K LC2 sensor and RSP default parameters Establish Connection Please refer also to chapter Locating serial PC port Establish connection gt S Select ComPort Available Ports Baudrate COM11 460800 x aa Connect serial cable to USB port of you PC Start RSP_Scope software Select Port at baudrate 460800 Press OK tae Example moving person approaching and reseeding from K LC2 sensor S RSP_Scope vi e x Scope Mode Command RSP command section output FileVersion SelectedPort SysState Local x QRFOESHTRSPI VIBU DECIT ZOT 10112 comi Operate SIGNALS rt my Virtual scope Thresh Jig Trigger level sensitivity tr A f W li a Channels 2 1 4 backward frequency speed gt forward frequency speed 128 120 110 100 90 80 70 60 50 40 3 2 10 0 10 2 3 40 5 6 70 80 9 100 110 12017 FFT bins SPEED Fad Backwd Chart Mode Single Split Virtual speed chart forward speed yee PEAK position es en 1 I 40
5. 12V power supply input in parallel to X4 pin 1 p pply input in p pin 1 P 2 GND Ground power supply input in parallel to X4 pin 4 2015 RFbeam Microwave GmbH www rfbeam ch Page 19 24 RFbeam Microwave GmbH RSP1 Evaluation Kit User Manual X6 Digital I O and SPI Pin Signal Description Connector top view 1 NC 2 GND Signal Ground 3 NC 4 Detect out digital processor output high at detection hold time 2 10 5 MISO SPI Master In Slave Out Saane AALA 6 CMD Tx Enable Enable signal for RS 485 drivers 1 9 7 SCK SPI Serial clock 8 MOSI SPI Master Out Slave In 9 nss SPI slave select 10 GND Signal Ground Grey signals reserved for future implementation X7a Serial Command Interface Outer row of X7 38400Baud 3 3V command interface FTDI compatible pin layout Pin Signal Description Connector top view 1 GND Power GND FTDI cable black wire 2 NC Not connected 3 5V Power supply input neeeee 4 RXD serial UARTdata input 1 5 TXD serial UART data output 6 NC Not connected X7b Serial Debug Interface 1Inner row of X7 38400Baud 3 3V command interface FTDI compatible pin layout Pin Signal Description Connector top view 1 GND Power GND FTDI cable black wire 2 NC Not connected 4 3 5V Power supply input ULA 4 RXD serial UARTdata input 5 TXD serial UART data output 6 NC Not connected
6. A05 or DIP switches 3 and 4 l l l I I i I I I I I I 128 120 110 100 3 80 0 5 40 0 1 0 0 CU OD ec m OC Ho W017 I l l I l I Fig 6 Person walking towards a single channel mono sensor Single channel sensors like K LC1 or K LC3 produce two similar peaks and therefore do not allow to detect movement directions 2015 RFbeam Microwave GmbH www rfbeam ch Page 11 24 RFbeam Microwave GmbH RSP1 Evaluation Kit User Manual Horiztontal cursors may be activated on order to measure signal to noise ratio in dB Adding IQ Signal Display I Q signal display appears at Channel switch position 4 IQ display display directly the sensor s output signals that are captured by the RSP AD converter Please refer to chapter Doppler Signal Basics for more details on IQ signals SIGNALS FT Thresh gay nf kadi Channels 2 4 Cursors cafes O25 C1 02 622 Fig 7 Frequency and Time signal of moving person towards sensor Using the Command Feature You may read and set parameters in the command section while RSP_Scope is running Example check influence of parameter A02 on the red theshold level Use same syntax as for RSP_Terminal Interpreting Speed Chart Display Chart displays object speed as a function of time If IQ sensors are used direction can be discriminated X axis Time 256 sampling time Y axis Speed FFT bin PEAK position l 475 851 Fig 8
7. LCx connector User Manual Pin Signal Description Connector top view 1 IF Q Doppler Signal Quadrature 2 Vcc Sensor Power 5V or 3 3V depending on Jumper J1 position 1 3 IF Doppler Signal In Phase 4 GND Sensor Ground 5 VCO FM output not used X2 K LCx connector Located on backside of the Eval Kit Pin Signal Description Sensor mount on PCB backside 1 IF Q Doppler Signal Quadrature 2 Vcc Sensor Power 5V or 3 3V depending on Jumper J1 position 3 IF Doppler Signal In Phase 4 GND Sensor Ground 5 VCO FM output not used X3 K MCx connector alternate sensor Pin Signal Description Connector top view 1 GND Sensor enable 2 Vcc Sensor Power 5V or 3 3V depending on Jumper J1 position 2 8 3 GND Sensor Ground 4 IF Q Doppler Signal Quadrature l 5 IF Doppler Signal In Phase 6 VCO Not connected 7 IF Q DC Not connected 8 IF I DC Not connected X4 Digital output and power connector Pin Signal Description Connector top view 1 DC 6 12V power supply input in parallel to X5 center pin 2 DOUT Opto isolated detection out plus side 1 3 DOUT Opto isolated detection out minus side mm 4 GND Ground power supply input in parallel to X5 outer contact X5 power supply input Pin Signal Description Connector top view 1 DC 6
8. the updatable Restore User Parameters items 2015 RFbeam Microwave GmbH www rfbeam ch Page 14 24 RFbeam Microwave GmbH RSP1 Evaluation Kit User Manual Manual Update Mode This mode is for experienced users Firmware and default parameters may be individually programmed Please refer to chapter RSP1_Prog File and Directory Organization N Firmware and parameter versions MUST match WXY must be identical Matching example RSP1_EEP_W4182 and RSP_Prog_W1180 are OK P RSP1_PROG Bootloader Interface V 0 9 0 21 Connected Retries Actual RSP Version Bootloader SelectedPort 0 RFbeam RSP1 V1 80 Dec 17 2014 c45b2v29N COM11 Automatic Update Manual Update Parameter Handler Done Connect to Bootlaoder l Update Firmware RSP_Firmware RSP_Default Parameters Update Default RSP1_EEP_V1 80 eep Parameters Copy default parameters to user area by clicking Set Default User Params Set Default START RSP Exit Bootloader by START RSP Fig 10 Example Program default parameters only 2015 RFbeam Microwave GmbH www rfbeam ch Page 15 24 RFbeam Microwave GmbH RSP1 Evaluation Kit User Manual Parameter Handler 3 margem td RSPI_PROG Bootloader Interface V Oaoa Se an _ This mode allows saving and Connected Retries Actual RSP Version Bootloader SelectedPort restoring user parameters ll 0 RFbeam RSP1 V1 80 Dec 17 2014 c45b2v29N comi You may use it for saving
9. 1 Firmware update files The update files must not be renamed or changed Update file locations Assuming C as system drive Windows 7 and later C ProgramData RFbeam RSP1 Firmware Windows XP C Documents and Settings All Users Application Data RFbeam RSP1 Firmware There are 3 update files for each RSP1 version Information file RSP1 Update Vx yy ini This file contains internal settings and information for automatic update Do not alter this file RSP 1 firmware RSP1_ Prog Vx yy hex RSP functionality This is a scrambled file Default parameters ROPI EEP Vx yy eep These parameters do not automatically overwrite user parameters Refer to chapter RSP1 parameters files Table 2 Update files RSP1 User parameter files Default location of user parameter files Assuming C as system drive User may select other locations New location will be remembered by the program Windows XP C Documents and Settings lt user name gt my documents RFbeam RSP1 Windows 7 and later C Users lt user name gt Documents RFbeam RSP1 User parameter files an be stored or read by using Parameter Handler mode File format may be opened with spreadsheet programs like Microsoft Excel or LibreOffice Calc N Be careful when manually changing the content of the files Header number of lines must not be changed First line must not be changed StartLine 6 Content User Parameters FW Version RFbeam RSP1 V1 80 D
10. M Mode settings Typical Settings These examples assume standard default parameters in EEPROM For more information on EEPROM parameters refer to the RSP1 datasheet Switch 1 defines if potentiometers for sensitivity and hold time will be active Switch 6 enables settings of switches 2 5 DIP switch is read only after power on or reset Configuration Switch Setting Remarks Use Potentiometers oe a Be All parameters from EERPOM except potentiometers Q stereo sensor K LC2 K LC5 Direction forward All parameters from EERPOM Defaults Q stereo sensor K LC2 K LC5 Direction forward Minimum hold time Maximum sensitivity Manual settings inactive Typical directional setting Manual settings 2 Q stereo sensor K LC2 K LC5 3 Direction mode stereo 4 Direction forward 5 Standard interference immunity Typical non directional setting I Q stereo sensor Manual settings 2 Q stereo sensor K LC2 K LC5 3 Direction mode mono 4 Direction forward 5 Standard interference immunity Typical non directional setting mono sensor Manual settings 2 Mono sensor K LC1 K LC3 3 Direction mode mono 4 Don t care 5 Standard interference immunity 12 3 4 5 6 2015 RFbeam Microwave GmbH www rfbeam ch Page 5 24
11. P1 PROG initial screen 2015 RFbeam Microwave GmbH www rfbeam ch Page 13 24 RFbeam Microwave GmbH RSP1 Evaluation Kit User Manual Programming Modes Automatic RSP1 Firmware Update In this mode RSP1 chip may be updated on new firmware versions Updating needs 2 or 3 files The files are automatically selected when opening the information file Usage 1 Open Update Config and select version Option save and restore previous user parameters Speichem in Firmware rem Automatic Update Manual Update Parameter Handler i Name Anderungsdatum Gr e si aap a aa i Zuletzt besucht _ n Init File R F1_Up RSP1 Firmware RSP1_Pre Default Parameters RSP1_EEF H P Select RSP1 Version Update z i Bibliotheken Comment l A j Computer 1 80 Save Use cs Connect Netzwerk Dateiname RSP1_Update_V1 80 ini Update F Dateityp RSP1 Update Specs ini 7 Update 2 Update RSP Automatic Update Manual Update i Parameter Handler Open Update i RSP1_Update_V1 80 ini a 1 mee e pae e ini file contains Items to be RSP1 Firmware RSP1_Prog_V1 80 hex updated Default Parameters RSP1_EEP_V1 80 eep p Save User Parameters Restore User Parameters Comment Connect to Bootloader Done Update RSP1 Firmware gt ee a Smee Ss Updating takes some seconds Table shows progress Update Default Parameters Bit Bootloader L depending on
12. RFbeam Microwave GmbH RSP1 Evaluation Kit User Manual RFbeam Microwave GmbH www rfbeam ch Page 1 24 RSP1 Evaluation Kit Features e Reference design for RFbeam RSP1 processor e Advanced movement detection system e High performance signal processing e More detection range than traditional designs e Less susceptibility to interferences RFbeam Microwave GmbH User Manual eg RFbeam e i RSP1 eval Kit MUM am an e Supports most RFbeam Radar transceivers ic e Stand alone or host operated modes z i old o g Config mi e Analyzing and command software tools included a X7b Debug Int oo e Saves time to market and development investments RARARE RESSA Applications e Reference design for own developments based 1 X7a CMD Int 1 X6 SPI IO on RSP1 processor e Exploring FFT based Dopppler signal processing e Optimizing choice of sensor type for different applications Overview RSP1 Evaluation Kit is a fully operational move ment sensor application using advanced signal processing It saves an important amount of evaluation and development time and money The RSP1 processor offers adaptive noise cancelling and automatic adaptation to different Doppler transceivers Functionality can be influenced by manual settings as well as by more than 30 parameters and commands The kit can be used as stand alone system or as a server of a host computer or microcon
13. RFbeam Microwave GmbH RSP1 Evaluation Kit User Manual RSP1 Hardware Architecture Data Acquisition An internal programmable differential amplifier allows gains from 1 to 16 RSP1 works with 2 12Bit ADCs sampling rate is selectable between 1 200HZ up to 22 5kHz in 10 steps This corresponds to maximum speeds from 13km h to 250km h Data Processing Processing is based on a complex FFT and on an adaptive noise threshold Many parameters allow adjusting and optimizing the performance for many different applications Advantages of FFT FFT stands for Fast Fourier Transform that allows signal processing in the frequency domain see details on http en wikipedia org wiki Fft Processing of the Quadrature Doppler signals is performed by a complex FFT Using FFT results in much better performance than using simple comparator designs or time domain processing The RSP1 FFT implementation leads to sophisticated movement and speed detectors e Better S N 21dB with 256pt FFT 2 to 3 times larger detection range e Inherent object speed detection e Reliable distiction between approaching receding objects e Efficient interference suppression through complex FFT fluorescent light rain vibrations e Narrowband filtering of Known interference frequencies e Selective and adaptive noise threshold capability Hardware The processor architecture allows data acquisition and processing in parallel Only a few external components
14. Speed of person moving forwards green and blue backwards In future versions of RSP_Scope Axis will be scaled in physical time and speed units 2015 RFbeam Microwave GmbH www rfbeam ch Page 12 24 RFbeam Microwave GmbH RSP1 Evaluation Kit User Manual RSP_Prog Tool This tool allows updating RSP1 firmware as well as exchanging RSP1 user parameters N Do not interrupt power or communication while uploading updates to RSP1 Data or program in RSP1 may be lost E RSP_Prog must be connected to connector X7b at 460800 Baud Establish Connection Please refer also to chapter Locating serial PC port IP Select ComPort Establish connection Available Ports Baudrate comi 46og00 Connect to RSP debug port Eval Kit Xlb Cancel Connect serial cable to USB port of you PC Start RSP_Prog software Select Port at baudrate 460800 Press OK or aN Following screen should appear P RSP1_PROG Bootloader Interface V 0 9 0 21 Connected Retries Actual RSP Version Bootloader SelectedPort ll 0 RFbeam RSP1 V1 80 Dec 17 2014 i COMI11 Automatic Update Manual Update Parameter Handler 1 Open Update Init File Config RSP1 Firmware e Default Parameters a Save User Parameters Restore User Parameters Comment to Version Save User Parameters Connect to Bootloader Update RSP1 Firmware Update Default Parameters Exit Bootloader Restore User Parameters Fig 9 RS
15. application Automatic Update Manual Update Parameter Handler specific parameters For mass production restore your Target File predefined parameter files RSP User Param gt File RSP1_UserParl00Hz Filter csv X2F FFFF Source File f User Param File gt RSP Fig 11 Example Program default parameters only RSP1 Memory Organization RSP1 contains 4 storage sections Storage item Storage location Purpose Programmable by RSP1_Prog Serial interfaces User Parameters EEPROM Initially a copy of default parameters YES YES Changable by S and X parameters Default parameters EEPROM Factory default values YES NO Firmware Flash RSP1 functionality YES NO Bootloader Flash Used for programming flash and default NO NO parameters Table 1 RSP1 storage sections RSP1_Prog File and Directory Organization RSP_Prog uses different folders for different types of data During installation of RSP1_Prog software a set of 3 update files will be copied to the PC harddisk The files contain the latest RSP1 version available at the time of the RSP1_Prog software release MN RSP1 firmware must only be programmed with the RFbeam RSP1_Prog tool Using other tools or programmers will result in permanent loss of RSP1 program RFbeam does not replace eased or illegaly programmed chips 2015 RFbeam Microwave GmbH www rfbeam ch Page 16 24 RFbeam Microwave GmbH RSP1 Evaluation Kit User Manual RSP
16. are needed thanks to the high integration level including EEPROM and precision clock generator Timer amp Event System Sensor 5 x Out Ref In 4x In VCO Sensor Q Control Debug J i Hold P sons Pot Le lt A gt Fig 2 RSP1 simplified block diagram 2015 RFbeam Microwave GmbH www rfbeam ch Page 6 24 RFbeam Microwave GmbH RSP1 Evaluation Kit User Manual Using RSP Software Tools e RSP_Terminal software allows viewing and changing RSP parameters via serial interface on connector X7a Optionally it can also be used on connector X7b e RSP_Scope software allows viewing internal signals via serial interface on connector X7b e RSP Prog software contains chip update tools as well as parameter handler Connect to X7b E Consult the RSP1 datasheet for more detailed explanations on signal processing RSP1 tools use an FTDI cable virtual com port cable TTL 232R 3V3 from www ftdichip com Drivers have been installed automatically together with the RSP1 tools installer Locating the Serial Port Please connect the FTDI cable to a USB port of your computer When starting an RSP1 tool a com port dialog appears Normally the highest COM port number is the right port Available Ports Baudrate COMI11 38400 To be sure please unplug and replug the USB cable during this dialog The related port number will disapear and apear again Cancel a The RSP tools will remember the selecte
17. col RSP1 is the server that executes the client Host PC commands Some rare exeptions exist when executing loop commands All parameters of classes A and S are stored in the permanent EEPROM memory Command Syntax Read parameters Command SA02 lt ENTER gt Response A0209 Write parameters Command A0203 lt ENTER gt Response A0203 Example read command Explanation SAQ02 lt ENTER gt command identifier A command class 02 2 digit hexadecimal parameter number Enter Enter key or lt CR gt or lt CR gt lt LF gt code Example response A0209 lt CR gt lt LF gt response identifier A02 command confirmation 09 actual 2 digit value typically hexadecimal CRLF codes for carriage return line feed Example write command A0203 lt ENTER gt command identifier A command class 02 2 digit parameter number 03 2 digit new parameter value typically hexadecimal Enter Enter key or lt CR gt or lt CR gt lt LF gt code Example response A0203 lt CR gt lt LF gt response identifier A02 command confirmation 03 2 digit value confirmation typically hexadecimal CRLF codes for carriage return line feed Example read command returns a string SR10 Get firmware version string Example response RFbeam RSP1 Version V1 4 String responses are marked in parameter table with Sep 19 2014 2015 RFbeam Microwave GmbH www rfbeam ch Page 8 24 RFbeam Mi
18. crowave GmbH RSP1 Evaluation Kit User Manual You may repeat a command by simply typing lt ENTER gt Most important Parameters and Commands E For complete parameter list please refer to the RSP1 datasheet All values are in hexadecimal notation except values marked with Param 1 default min max Function Description R Class A EEPROM Application Parameters End User specific settings in final application A01 01 00 09 hold time 09 maximum hold time of detection output A02 09 00 09 sensitivity 09 maximum detection sensitivity A03 03 00 09 immunity 09 maximum immunity against interference A05 00 00 02 direction 00 approaching 1 receeding 2 both A06 V1 8 00 00 7F low frequency speed limit 0O inactive gt 0 Low limit unit FFT bin see Fig 15 A06 V1 8 00 00 7F low frequency speed limit 00 inactive gt 0 High limit unit FFT bin see Fig 15 Class S EEPROM System Parameters Application specific parameters S00 00 00 01 sensor type 00 stereo I Q sensor 01 mono sensor 1 channel xX S01 00 00 01 Use alternate analog port 01 ADC input on pin 2 and 3 instead of pin 44 aqnd pin 1 xX S03 02 01 OA sampling rate see Fig 15 xX S08 01 00 01 bandwidth 01 low bandwidth digital output used for external filter S09 04 00 04 ADC gain gain 2 n 0 gt 1 1 gt 2 2 gt 4 3
19. d port Fig 3 Connection Dialog If Windows or RSP Tools do not recognize the FTDI USB cable please uninstall and reinstall the drivers Driver software is located on your RSP install media under FTDI 1 Uninstall existing driver with CDMuninstallerGUI exe 2 Reinstall driver with CDM v2 12 00 WHQL Certified exe RSP_Terminal RSP1 processor can be influenced by many parameters RSP_Terminal allows viewing and setting all parameters In fact RSP_Terminal emulates a host computer or microprocessor used in a RSP1 based user hardware Establish Connection T Select comPor Establish connection Available Ports Baudrate comii 38400 x 2 Connect serial cable to USB port of you PC 3 Start RSP_Terminal software cance 4 Select Port at baudrate 38400 5 Press OK 2015 RFbeam Microwave GmbH www rfbeam ch Page 7 24 RFbeam Microwave GmbH RSP1 Evaluation Kit User Manual o Check if connection works Program Version SelectedPort SystemState jogo10 feom Operate Type command R04 get RSP1 version Ee Example Response R0418 Version 1 8 Type L00 stream result string 4 column stream showing fwd forward bwd backward fwd speed bwd speed fwd power bwd power fwd speed bwd speed fwd power bwd power fwd speed bwd speed fwd power bwd power Type 1L0000 to stop streaming Entering Commands RSP 1 follows a client server proto
20. e Sensitivity to fluorescent light use IQ modules and or RSP1 FFT Filter features e Material and thickness of cover e Sensitivity to vibrations use I Q modules The following application notes should help to optimize your application Cover Every cover has some influence on the shape of detection field and the achievable maximum distance Radar can view through plastic and glass of any color This makes a high degree of design freedom Nevertheless some rules should be considered E Cover must not be metallic Plastic coating with colors NOT containing metallic or carbon particles Distance between cover and front of Radar sensor gt 1cm Best cover material is Polycarbonat or ABS Best cover thickness is 3 4mm Vibrations of sensor module relatively to the cover should be avoided because this generates signals that can trigger the output Interference Factors RSP1 designs are much more robust against interference factors than traditional Radar based designs Nevertheless take care on the following tips Fluorescence Light e Do not mount Radar modules directly facing to fluorescent lamps e Use sensors at the lowest possible sensitivity for your certain application Radar is susceptible to fluorescent lamps even if controlled by electronic ballasts These lamps produce a 100Hz 50Hz mains Europe or 120Hz 60Hz mains USA Radar signal that is similar to the signals produced by a person walking at about 2km
21. ec 17 2014 Write date 2015_02_25 16 15 58 Comment Param Value A00 00 A01 01 A02 09 A03 03 A04 01 A05 00 A06 00 2015 RFbeam Microwave GmbH www rfbeam ch Page 17 24 RFbeam Microwave GmbH RSP1 Evaluation Kit User Manual RSP1_Eval Kit Hardware E Additional information can be found in the RSP1 chip data sheet Power Supply Stable and low noise power supply is essential for optimal sensor results For details please refer to the Evaluation Kit circuit schematics and to the RSP1 data sheet RSP1_Eval Kit may be powered bay different sources Most convenient way is using the USB 5V power from Personal Computer USB power is very noisy The evaluation kit uses a switched step up regulator followed by a linear power supply resulting in a very clean power supply Eval Kit provides 3 independent and decoupled power inputs 5V USB power at X7a 5V USB power at X7b 6 12VDC external supply at X4 and X5 Step up Linear Linear a a Ha gt x41 gt Fig 12 Evaluation Kit low noise supply concept Digital Output RSP1_Eval Kit provides an optically isolated digital output with a maximum 28VDC nominal 20mA driving capability The output is completely floating for maximum flexibility Fig 13 Output wiring examples using external supply for output and system power 2015 RFbeam Microwave GmbH www rfbeam ch Page 18 24 RFbeam Microwave GmbH RSP1 Evaluation Kit Connector Pins X1 K
22. gt 8 4 gt 16 X SOC 02 00 FF Adaptive learn speed 00 maximum gt 0 value 500ms dB xX Class R immediate Real Time Read Params Read only parameters ROO 00 01 detection active 01 detection output active includes hold time R01 OO FF detection speed 00 no peak position FFT bin R02 0 FF noise level mean arithmetic mean over all FFT bins R04 00 FF software version major minor version x 0 are preliminary versions R10 ji software version string Full software version and date string max 40 characters R11 i f result string on serial cmd port SpeedFW SpeedBW MagFW MagBW lt CR gt Class W immediate Real Time Write Params Volatile write parameters W00 00 01 force detection output 01 set digital detection output 0 normal output operaton wo1 reset processor software reset value has no effect W02 load default parameters load default values for all parameters Class L LOOP Continuous output Output results continuously until lt CR gt is received LOO stream result string on serial SpeedFW SpeedBW MagF W MagBW lt CR gt cmd port 00 stop streaming Notes Column R Reset required 1 Vx y Parameter added in Version Vx y Restore original default parameter values with command W02 Repeat a command by simply typing lt ENTER gt 2015 RFbeam Microwave GmbH www rfbeam ch Page 9 24 RFbeam Microwave GmbH RSP1 Evaluation Kit User Manual RSP_Scope
23. h RSP1 features adaptive filters intelligent suppression algorithms and selective programmable FFT filters Refer to RSP1 datasheet 2015 RFbeam Microwave GmbH www rfbeam ch Page 23 24 RFbeam Microwave GmbH RSP1 Evaluation Kit User Manual Rain e Prevent cover to get wet e The lager the distance to rainy environment the smaller the rain effect Raindrops can be interpreted by Radar as moving objects and may trigger the output Vibrations Ventilators etc e Radar based sensor and its cover should be mounted stable to prevent vibrations e Try to prevent objects like ventilators in the sight of the detection field Sensitivity and Maximum Range Sensitivity defines the necessary signal strength at the Radar sensor to trigger the output RSP1 allows adjusting sensitivity by potentiometer and or by parameters Trigger distance at same sensitivity setting can vary depending on e Type of moving object person car etc e Moving direction of the object Further Reading e RSP1 datasheet contains important information on signal processing and hardware design e Schematics of the RSP1 Evaluation Kit are included on the installation media e Application note AN 04 contains amplifier examples http www rfbeam ch fileadmin downloads appnotes AN 04 20T ypicalSignalAmp pdf e Application Note AN 03 contains tips for cover Radome and housings http www rfbeam ch fileadmin downloads appnotes AN 03 Radome pdf Revision Hi
24. hes to explore detection modes Mono 123 45 6 Backwards 12345 6 detects movement ON detects movements away ON in both directions from the sensor only Try other sensors and settings Refer to Switch Settings Summary N Always unplug power supply before inserting or unplugging sensors Do not try to connect any device on X2 component side Connector X2 is for connecting sensors on the backside of the Evaluation Kit only 2015 RFbeam Microwave GmbH www rfbeam ch Page 4 24 RFbeam Microwave GmbH RSP1 Evaluation Kit User Manual Switch Settings Summary Settings and around 30 parameters can be set and permanently stored by an ASCII terminal connected via the command interface at X7a Please refer to the RSP1 data sheet for more information For stand alone operation most important parameters my be set by potentiometers and a DIP switch Mode Switch SW Changes becomes valid only after power up Switch Function ON OFF default 1 Sensitivity Hold Time Use potentiometers Use EEPROM Sensitivity Hold settings Switches 2 5 take only effect if switch 6 is in ON position 2 Sensor type Mono sensor K LC1 e g I Q sensor K LC2 e g 3 Direction mode Mono even with I Q sensor Stereo Directional 4 Direction Backward Forward 5 Immunity Higher interference immunity Low interference immunity 6 Select Setting mode Use switch 2 5 settings Use EEPRO
25. is kind of detection results in a much better sensitivity than simple comparator solutions Theoretical gain in S N ratio by using a 256pt 2 8 FFT is 10 log 8 24dB In reality more than double detection distances can be reached compared to comparator solution RSP1 debug port and RSP_ Scope help understanding using FFT in movement and speed sensors 2015 RFbeam Microwave GmbH www rfbeam ch Page 21 24 RFbeam Microwave GmbH RSP1 Evaluation Kit User Manual Sampling Rate and Bandwidth Chosing optimal sampling rate is crucial for best detection results There are close relationships and dependencies between e size of FFT RSP1 uses 256pt Fast Fourier Transform e sampling rate e detectable speed range e speed resolution e amplifier bandwidth e system sensitivity signal to noise ratio SNR Minimum Sampling Rate Sampling rate fs must be at least twice the highest Doppler frequency appearing in the application f gt 2 f Nyquist criteria However the higher the sampling rate the lower the frequency resolution d gt FFTn f In RSP1 FFTn 256 Maximum Amplifier Bandwidth Amplifier bandwidth must be significantly lower than the maximum frequency mentioned in Fig 15 2nd order lowpass filter is recommended Otherwise aliasing effects will occur Wikipedia http en wikipedia org wiki Nyquist E2 80 93Shannon_sampling_theorem Sampling Rate Table Sampling rate can be set by parameter S03
26. owave GmbH www rfbeam ch Page 3 24 RFbeam Microwave GmbH RSP1 Evaluation Kit User Manual Quick Start No PC software is required yet 1 Plug in USB cable into X7a black wire must be connect to pin 1 2 Plug in USB cable into a USB port of your PC or notebook This serves as power supply now 3 Look at the LED indicators D1 power LED is on D2 busy LED turns on for about 5 seconds RSP 1 is learning the sensor and environment 4 RSP1 is ready as soon as red D2 is off E RSP1_Eval Kit can also be used without a PC and USB cable Use a 12VDC adapter or a 9V battery connected to the X5 power supply connector instead Explore You have plugged in a K LC2 I Q stereo sensor This allows distinguishing between movements towards and backwards from the sensor This behavior can be changed by other DIP switch settings Forward movement e Green indicator LED3 turns on only if there is a forward movement to the sensor Walk around in some distance from the sensor and check this Sensitivity potentiometer e This affects the maximum detection distance May be that there is no more reaction near the minimum sensitivity This behavior depends on the sensor type Hold time potentiometer e Turn it to the center position hold time will be around 5 seconds Maximum hold time is around 160 seconds Direction settings e Set sensitivity to maximum and hold time to minimum again to get best experience e Set switc
27. story Version 0 2 Sept 21 2014 Preliminary release Version 0 3 Nov 01 2014 Preliminary release Version 1 0 April 13 2015 Valid from RSP1 firmware V1 8 RFbeam does not assume any responsibility for use of any circuitry described no circuit patent licenses are implied and RFbeam reserves the right at any time without notice to change said circuitry and specifications 2015 RFbeam Microwave GmbH www rfbeam ch Page 24 24
28. troller The kit contains helpful software tools for configura tion and signal visualization 4 fh i g p3 B Sensitivity Hold Time E E Config X7b Debug en X6 a Agn ee 1 X7a CMD Int 1 X6 SPIO Indicators D1 Power LED D2 Busy LED start up D3 Detection LED Connectors X1 K LCx sensor connector X2 Backside K LCx connector X3 K MCx sensor connector X4 Digital output connector X5 DC Supply input 6 12V X6 Digital I O SPI in preparation X7a Serial Command RSP_Terminal X7b Serial Debug RSP_Scope Xp Reserved Reset Settings P1 Sensitivity pot P2 Hold time pot DC INS SW Mode switch 6 12V J1 Sensor supply volage J2 Optional for mono sensor Fig 1 Connectors and indicators 2015 RFbeam Microwave GmbH www rfbeam ch Page 2 24 RFbeam Microwave GmbH RSP1 Evaluation Kit User Manual Packing List 1 2 3 Eval Kit PCB board RS232 USB cable USB stick containig e RSP_Terminal software RSP_Scope software RSP_Prog software FTDI USB Serial drivers e Documentation 5 different RFbeam Radar sensors e K LC1a K LC3 1 channel sensors also called mono sensors e K LC2 K LC5 K LC6 2 channel sensors also called stereo sensors I Q sensors Getting Started Preparation We will begin with using the Evaluation Kit as stand alone device without any PC software Please follow step by step 1 Install software from USB stick b
29. y starting Setup_ RSP Tools exe Different software modules will be installed If your computer does not already contain the actual LabVIEW runtime engine you will be asked to accept licenses of National Instruments Please accept all default storage locations Several installers are executed by a script Accept installers until the end of complete installation If correctly installed You will find RSP_Terminal and RSP_Scope software under START PROGRAMS RFbeam RSP and the program Icons on your desktop Connect the FTDI USB cable to PC Leave RSP side connector unplugged F TDI Hardware should be recognized by Windows after some seconds Unplug USB cable from PC again so that power of the kit is off Insert the K LC2 sensor in RSP_Evaluation Kit front connector X1 123 45 6 Set SW DIP switch 1 in ON position all other should be OFF E 5 Set Potentiometer P1 sensitivity to maximum towards Set Potentiometer P2 hold time to minimum towards lf Windows does not recognize the FTDI USB cable please uninstall and reinstall the drivers 1 Uninstall existing driver with CDMuninstallerGUI exe 2 Reinstall driver with CDM v2 12 00 WHQL Certified exe AN Always unplug power supply before inserting or unplugging sensors A RFbeam K LCx radar module are susceptible to electrical discharge Before plugging the module please touch first the RSP1 board and then insert the K LCx device 2015 RFbeam Micr
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