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IWR6843ISK: IWR6843ISK

Srinivasan B
Prodigy 155 points
Part Number: IWR6843ISK

Hi, 

I would like to get couple of clarification from the 6843 pipeline. 

1. Can you explain the auto-correlation function used in the pipeline and the logic behind the concept. 

2. why is the phase difference value between consecutive frame is used when FLAG_COMPUTE_PHASE_DIFFERENCE is set to 1. What is the significance of this difference value rather using the phase computed value directly?

3. Heart rate is calculated using  many estimation method, which method's result is used in the GUI. 

  • 0
    TI__Mastermind 23570 points

    Helllo

    can you please help us understand the example code on which these questions are based.

    Thank you,

    Vaibhav

  • 0 in reply to Vaibhav Mahimkar
    Prodigy 155 points

    Hi Vaibhav, 

    I am looking the example code from industrial toolbox vital sign code with 6843 hardware.

  • 0 in reply to Srinivasan B
    TI__Mastermind 23570 points

    Hello

    Thank you for listing the demo/lab as it sets  the context right, considering the variety of examples we provide for mmWave devices.

    All lab/demo examples are provided to demonstrate the sensing and processing capabilities of the mmWave devices.  

    These are provided:

    - For easy evaluation

    - As is

    -  Along with basic explanation of algorithm as applicable.

    Although, users can start with these provided examples, we expect users to be expert and own the  algorithm and implementation.   As such  code level implementation and explanation  outside the forum support.

    Having said that we will respond to your query by pointing you to the relevant sections in the algorithm document.

    Thank you,

    Vaibhav

  • 0 in reply to Vaibhav Mahimkar
    TI__Mastermind 23570 points

    Hello

    #1) For Auto correlation which is a standard function please check web resources it:

     -- Autocorrelating a signal and finding the lag corresponding to the maximum of the autocorrelation function can help in finding the “periodicity” of the signal. More details on the autocorrelation function  https://en.wikipedia.org/wiki/Autocorrelation

    #2) provided argument makes the computation immune against phase drifts.

    #3) Please look at the data format format  output  field that has  heartrateEst* and derive your own selection based on heuristics and observations.

    Thank you,

    Vaibhav