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AWR1642: Change sensor configuration

FMZ
Prodigy 60 points
Part Number: AWR1642

Dears,

I use the sensor to detect only two reflectors, usually they are placed one meter from the sensor and I use the sensor to detect the change in their angle and position while moving away from the sensor.

However my sensor usually detect all other objects in the room (there are objects also from 0 to 1m)!

I need to change the device configuration to detect only the largest two peaks (which represents my two reflectors)!!

Any advice?

Mit herzlichen Grüßen

FMZ

  • 0
    TI__Mastermind 24955 points
    FMZ,

    I would suggest altering the CFAR parameters in the CLI configuration file that are sent to the device. Increasing the CFAR threshold could help reduce the number of detected objects and leave only the two reflectors that you are focused on detecting.

    Please read through the User's Guide of the SDK which can be found in the docs folder of the SDK installation and search for "CFAR."

    Regards,
    Kyle
  • 0 in reply to Kyle Cousino
    Prodigy 60 points

    Hi Kyle,

    Previously I connected my (AWR1642EVM-FSS)  using your file:Obstacle Detection Sensor Manifest, Manifest ID - SRAS00004947 and I take the data using MATLAB,

    As your suggest I tried to connect the sensor using MMwave demo visualizer, but It is always show: waiting for data! as below pic! 

    Please advice?

    Kind regards,

    FMZ

  • 0 in reply to Kyle Cousino
    Prodigy 60 points

    Hi Kyle,

    Refering to my pervious comment , which of the below parameters I should change to get the same result as you suggest?!!


    Regards,
    FMZ


    sensorStop
    flushCfg
    dfeDataOutputMode 1
    channelCfg 15 3 0
    adcCfg 2 1
    adcbufCfg -1 0 0 1 0
    profileCfg 0 77 7 7 58 0 0 68 1 256 5500 0 0 30
    chirpCfg 0 0 0 0 0 0 0 1
    chirpCfg 1 1 0 0 0 0 0 2
    bpmCfg -1 0 0 1
    frameCfg 0 1 32 0 100 1 0
    lowPower 0 0
    guiMonitor -1 1 1 1 0 0 1
    cfarCfg -1 0 2 8 4 4 0 5120
    cfarCfg -1 1 0 8 4 4 0 5120
    peakGrouping -1 1 1 0 1 224
    multiObjBeamForming -1 1 0.5
    calibDcRangeSig -1 1 -5 8 256
    extendedMaxVelocity -1 0
    clutterRemoval -1 0
    compRangeBiasAndRxChanPhase 0.0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0
    measureRangeBiasAndRxChanPhase 0 1.5 0.2
    nearFieldCfg -1 0 0 20
    lvdsStreamCfg -1 0 0 0
    sensorStart

  • 0 in reply to FMZ
    TI__Mastermind 24955 points
    FMZ,

    In your screenshot, you are only viewing the "Configure" tab. You need to click on the "Plots" tab in order to see the output plots. You can also upload your configuration file (*.cfg) in the plots tab as well.

    The configuration you provided will work well for objects placed at a distance of one meter from the sensor.

    Please let me know if you have any questions.

    Regards,
    Kyle
  • 0 in reply to Kyle Cousino
    Prodigy 60 points

    Hi Kyle,

    Thanks for your answer, I understand that I can do this options, but still I canot estabilish connection with the device as the message '' waiting for data,,,,'' never end and I connot reach (Hardware connected) situation.

    at the momment I use ''auto-apps-tid-ods_v1.1.0'' to visualize data and recently I start to change in the connfiguration file I sent!

    I have some questions! 

    • What is the troubleshooting for this error? should I be an admin user in my PC to get data from com ports?
    • How did you know that: the device will work well for objects placed at a distance of one meter from the sensor, this is the current situation I have in reality!, Which parameter show you that,how to change it? I need to put limits for the range!
    • I need to understand some paremeters in this configuration file! why I have two lines repeated for cfarCfg?- Can you share any document regarding this configuration!?
    • My two objects are subosed to move within specific limit +/- 0.5 m, should I use any frame/chirp options in the configuration to let the radar track them only?

    Waiting for your advice

    Rgs,

    FMZ

  • 0 in reply to FMZ
    TI__Mastermind 24955 points
    FMZ,

    TI recommends running Google Chrome in administrator mode when using any of our web-based visualizers. Also since you are using the AWR1642BOOST-ODS EVM, please take a look at the ODS Demo Visualizer found here:

    dev.ti.com/.../

    For your questions regarding the configuration files and the arguments used in the configuration file, please refer to the User's Guide that is found in the docs folder of the SDK installation. There is a section that explains all of the CLI commands and their corresponding parameters.

    I would also suggest that you take a look at our mmWave Sensing Estimator tool that can be found here:

    dev.ti.com/.../

    You can use this tool as a starting point for developing the specific chirp you would want to use in your application.

    Regards,
    Kyle