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Original question:

IWR6843AOP: People count solution

IWR6843AOP: IWR6843AOP

K Gururaja
Prodigy 30 points
Part Number: IWR6843AOP

Hi,

We have procured 2 numbers of IWR6843AOP evaluation boards for development purpose. we are planning to develop application for people count

We need initial support for below points.

1. To understand development board and people count application, what are all supporting software (including GUI) are required for demo and share us the location for the same

2. After understanding the demo application, we need customize overhead people count application. please share us "overhead_3d_people_count_demo_default.bin" file and source code

3. Please let us know steps to be followed for customization ( In Count, Out Count and Device ID)

4. How to configure data for people count (like Entrance zone (area), Ceiling Height, Width, Angle, people height, living or nonliving object detection, multiple people count (if more than 3 to 5 people enter/exit))

We are new to mmwave radar technology, so need your support for the development.

Regards

K.Gururaja

  • 0 in reply to Nathan Block
    Prodigy 30 points

    Hi Nathan,

    Thanks for sharing the document link

    Now we are using IWR6843AOP with Industrial Tool bar 4.10.1 along with MATLAB GUI. we able to get In count and Out Count Details.

    We are facing issue to detect multiple person with minimum shoulder distance. Which parameters to be modified in below configuration file.

    % TI AOP EVM ID: 1120910143
    sensorStop
    flushCfg
    dfeDataOutputMode 1
    channelCfg 15 7 0
    adcCfg 2 1
    adcbufCfg -1 0 1 1 1
    lowPower 0 0
    % 040404 = 263172, 050505 = 328965, 060606 = 394758, 080808 = 526344
    profileCfg 0 61.0 60.00 11.00 44 328965 0 9.05 1 64 2000.00 2 1 40
    chirpCfg 0 0 0 0 0 0 0 1
    chirpCfg 1 1 0 0 0 0 0 2
    chirpCfg 2 2 0 0 0 0 0 4
    frameCfg 0 2 224 0 110.00 1 0
    dynamicRACfarCfg -1 2 39 1 1 4 8 4 4 4.00 6.00 0.50 1 1
    staticRACfarCfg -1 1 39 2 2 8 16 4 6 6.00 13.00 0.50 0 0
    dynamicRangeAngleCfg -1 7.000 0.0010 2 0
    dynamic2DAngleCfg -1 5 1 1 1.00 15.00 2
    staticRangeAngleCfg -1 0 1 1
    %classifierCfg 1 1 1 500 0.6 1.0 0.95 10
    antGeometry0 -1 -1 0 0 -3 -3 -2 -2 -1 -1 0 0
    antGeometry1 -1 0 -1 0 -3 -2 -3 -2 -3 -2 -3 -2
    antPhaseRot -1 1 -1 1 -1 1 -1 1 -1 1 -1 1
    fovCfg -1 62.0 69.0
    compRangeBiasAndRxChanPhase 0.0666794 0.83511 -0.47180 -0.85239 0.29214 0.82452 -0.33252 -0.92825 0.36801 0.66608 -0.65576 -0.76456 0.47470 0.69052 -0.53409 -0.78467 0.61990 0.60297 -0.72058 -0.65121 0.63257 0.67444 -0.62360 -0.70523 0.67224
    staticBoundaryBox -1.25 1.25 -3 3 -0.5 3
    boundaryBox -1.5 1.5 -4 4 -0.5 3
    sensorPosition 2.9 0 90
    gatingParam 3 2 2 3 4
    stateParam 3 3 6 20 3 50
    allocationParam 20 20 0.05 7 1.5 20
    maxAcceleration 1 1 1
    trackingCfg 1 4 800 20 37 33 110 0
    presenceBoundaryBox -4 4 -4 4 0.5 2.5
    sensorStart

    please share us example configuration file for ceiling mount with 3-meter height. This will help us to speed up our development.

    Regards

    K.Gururaja 

  • 0 in reply to K Gururaja
    TI__Mastermind 37805 points

    Hi,

    You could try decreasing the maximum distance threshold, found as the second-to-last argument of allocationParam. In general, you can also consult our tracker layer tuning guide and detection layer tuning guide found here.

    dev.ti.com/.../node

    dev.ti.com/.../node

    Best,

    Nate

  • 0 in reply to Nathan Block
    Prodigy 30 points

    Hi Nate,Turn Reply notifications off

    Thanks for the feedback.

    Our criteria is to detect the multiple person within 10cm of distance of each other. 

    Following is the configuration file parameters for the sensor: 

    Start freq (Ghz) 61
    slope (MHz/us) 90500
    sample per chirp 64
    chips per frame 670
    frame duration (ms) 110
    sampling rate (Msps) 2
    bandwidth (Ghz) 0.2896
    range resolution (m) 0.5180
    velocity (m/s) 0.0352
    no of Rx (MIMO) 4
    No of Tz (MIMO) 3

    Where and what all parameters have to be changed if we need to detect multiple persons within 10 cm of distance between each other. So, Range resolution must be 0.1? When we change the range resolution parameter with the same settings with only range resolution as 0.1 we observed the sensor is not responding. Kindly suggest the changes.

    Thanks.

    K Gururaja

  • 0 in reply to K Gururaja
    TI__Mastermind 37805 points

    Hi,

    You can accomplish this by increasing the range resolution to a factor less than 0.1 meters. You can do this by increasing the chirp slope, decreasing the sampling rate and/or increasing the chirp duration.

    Best,

    Nate

  • 0 in reply to Nathan Block
    TI__Mastermind 37805 points

    See our mmwave sensing estimator tool here.

    mmWaveSensingEstimator

  • 0 in reply to Nathan Block
    Prodigy 30 points

    Hi Nathan,

    As per your inputs, we have modified the parameters and multiple people detection is working. 

    if 5 persons are passing below radar module, Module will detect as 5 count but entry or exit count will show only 2 persons instead of 5.

    Please let us know any changes has to be done in configurations.

    Regards

    K.Gururaja

  • 0 in reply to K Gururaja
    TI__Mastermind 37805 points

    Hi,

    This sounds like something you'll have to modify in the application layer. If the radar is detecting 5 people, then you will have to modify the software for your entry and exit counts.

    Best,

    Nate