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AWR1443BOOST: frame periodicity in High Accuracy Range Measurement demo

Ray丶
Intellectual 440 points
Part Number: AWR1443BOOST

Hi,

I want measure  the distance continuously from a reflector to estimate the vibration frequency.In high_accuracy_14xx_lab I notice the output of recoard data is based on Frame（one frame one data）.

What's the min  frame periodicity can be set to achieve the max sample rate of  Range Measurement?More specific，in defult configuration file 'profile_2de',the frame periodicity time is 500ms,can I  set it to 10ms?

Thank you. 

  • 0
    TI__Expert 7215 points
    Hi,

    We will check this and get back to you soon.

    Regards,
    Kaushal
  • 0
    TI__Intellectual 2885 points

    Ray,

    Look over this paper "Programming Chirp Parameters" LINK.

    Also the "mmWaveSensingEstimator" might be helpful LINK.

    I don't see any reason why lowering the periodicity to 10ms would adversely affect anything.

    Alex

  • 0 in reply to Alex Rivera
    Intellectual 440 points

    Hi,Alex,

    Thanks for your reply.

    I set frame periodicity to 10ms and the demo can't work.Then I set it to 50ms, it works well.And other parameters in 'profile_2de' are  not changed.

    I think this is related to processing chain time and checked some thread and realize some parameters like TransmitOutputTime really maters. So I checked Display Parameters of Profiling in High Accuracy Visualizer .It shows like this.

    According to these time information,I reset frame periodicity to 26ms and it works .26ms is the min frame periodicity I think.

    However ,when I start record data,the data length doesn't match with this data sampling rate.More specific,I collected data about 30s and get about 300 data.But with frame periodicity  26ms (or 38Hz data sampling rate),the data length should be 38×30=1140.

    The demo works well and the data is right,but data length is not correct.Do you know why?

    Look forward to your reply!

  • 0 in reply to Alex Rivera
    Intellectual 440 points
    Any advice on this problem?
  • 0 in reply to Ray丶
    TI__Intellectual 2885 points
    Ray,

    Are the "300 data", is this the only data that you are able to record from PostProc?

    Alex
  • 0 in reply to Alex Rivera
    Intellectual 440 points

    Alex,

    I'm confused about your'the only data'.The data is recorded by High_Accuracy_Visualizer 1.0.1 and it's a .csv file.I pushed RECORD START button and after 30 seconds I pushed RECORD STOP button.The .csv file generated contains about 300 Frames like this.

    But according to the frame periodicity I set(26ms),there should be about 1140 frames after 30 seconds.

    Do you know why?

    Thank you.

  • 0 in reply to Alex Rivera
    Intellectual 440 points
    Hi,Alex
    Sorry to bother you.It's been a long time. Have you got any ideas?
    Ray
  • 0 in reply to Ray丶
    TI__Intellectual 2885 points
    Ray,

    Sorry for the delay, looks like the limiting factor might be the UART data rate, but I still need confirmation on the issue. Again sorry for the delay.

    Alex
  • 0 in reply to Alex Rivera
    Intellectual 440 points

    Alex,

    Thank you so much.Let me know if you have any progress.

    Ray

  • 0 in reply to Alex Rivera
    Intellectual 440 points

    Hi,Alex

            I did some experiments about thisdemo.I set the frame periodicity to 50, 100, 200 milliseconds respectively（or 20Hz\10Hz\5Hz data output rate）and collected data with High_Accuracy_Visualizer 1.0.1 for  one minute.Finally I got  three .csv files and they contain about  500/600/300 data respectively.It looks like when  frame periodicity is lower than 100ms,the output data will have wrong length.

            So I collected data via COM port rather than High_Accuracy_Visualizer 1.0.1 and wrote a script to decode the data.This time I got right data length with 50ms frame periodicity.

            I think there is something wrong with High_Accuracy_Visualizer 1.0.1 and I suggest you check it out. Anyway,I solved my problems and you can close this thread.

    Thanks