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Awr1843 (People) Detection (CfgFile )

Mohamed Naceur Hassine
Intellectual 460 points
Other Parts Discussed in Thread: AWR1843

Hello,

I'm using the AWR1843 radar with the OOB demo and I'm trying to detect people (adults, child or custom) in a maximum range of 30/35m.

I used Mmwave Sensing Estimator tools to generate this cfg file and sendit  to the radar for configuration : 

AdultCfg.cfg

When I tested with this cfg configuration with a person in front of the radar with a range =30m and a range =15m I had no point detected.

In fact, when I put a different object like a barrier or a chair, I can detect it in this range but when I try to detect people, I fail.

1) I want to know why with this file I can't detect people?

Ps : I tried to put typical detectable object (Adult,child or custom) but I still not detecting people. (child or an adult).

I have another question, when I generate the cfgfile I discover that the last parameter in profilecfg is RxGain=30db, this is totally strange because when I know that our RxGain is around 7 or 9db?

2) Can someone help me to know if this is the Rxgain and why it is 30?

Regards,

Ben Hassine

  • 0
    TI__Mastermind 32725 points

    Hi Ben,

    I tried to generate a config for 1843 on the estimator tool myself. For me it is generating a different configuration file than yours that you have provided on this thread. 

    Did you make any changes to the initial configuration file generated by the software.  You can check below my configurations generated.

    Do let me know if you are able to generate this parameter set. Also let me know if this configuration file gives you accurate results or not. 

    2) RX_GAIN

    This filed defines RX gain for each channel. The total RX gain is achieved as a sum of RF gain and IF amplifiers gain.

    Thanks,

    Pradipta. 

  • 0 in reply to Pradipta Bandyopadhyay
    Intellectual 460 points

    Hei Pradipta,

    Thank you for your answer. Yes, when I generated the mmwave estimator cfg file, I changed this line cfarFovCfg -1 0 0 49.99 because the mmwave estimator only changes the profile, frame, and chirp cfg and leaves the other settings as the demo default. So when I generated the file, I set this parameter in cfarFOV to 49.99 instead of 8.92, which limited the maximum detectable range.

    And I changed another parameter cfarCfg -1 0 2 8 4 3 0 15 0 instead of -1 0 2 8 4 3 0 15 1 to disable peak grouping. You can find here in these captures how I set my parameters to generate a "custom" file. And for the RCS you can choose Adult or custom.... depends on the object you are going to detect.

    So you want to detect an object at a maximum distance of 35m, you must first specify the RCS (child, custom... ) and after generating the file, change this params to cfarFovCfg -1 0 0 35 and you will start getting objects detected at the range of 30m or 35m with good result. 

    Custom.cfg

    Thanks,

    Ben Hassine