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Original question:

IWR1642BOOST: Increasing Vital Sign Measurement Demo

IWR1642BOOST: IWR1642

kisub Jung
Intellectual 930 points
Part Number: IWR1642BOOST

I just followed .

So, I had changed min distance 3m and max distance 4m while tester is located at 3.5 m away in that direction.

Vital sign Demo is not detecting while it works with parameter min:0.3, max 0.7.

Any suggestion?

BR,

kisub Jung

  • 0
    TI__Guru 50240 points
    Hi Kisub Jung,

    I will need to discuss this with the developer before providing a response, please allow us a few days.


    Cheers,
    Akash
  • 0 in reply to Akash Gondalia
    TI__Mastermind 24955 points
    Kisub,

    Where did you change the minimum and maximum distance? This is not clear from you original post. Please provide more information.

    Regards,
    Kyle
  • 0 in reply to Kyle Cousino
    Intellectual 930 points

    In vitalsign configuration, 

    vitalSignCfg, StartRange (meters) = 0.1 , End Range (meters) = 0.7 by default

    cf) http://dev.ti.com/tirex/content/mmwave_automotive_toolbox_2_0_0/labs/lab0001-driver-vital-signs/docs/DriverVitalSigns_DevelopersGuide.pdf

    What we need to do is to measure vital sign in the room size 5*5 m^2.

    Therefore, assuming that we know where exactly the person is, we would like to know his breathing rate and heart rate.

  • 0 in reply to kisub Jung
    TI__Mastermind 24955 points
    Kisub,

    It looks you are trying to extract vital signs based on a known location. If this is the case, then you will need to modify the processing chain in the Vital Signs demo. The current vital signs chain works by scanning through the range FFT and finding the highest peak and then selecting that range bin to extract the vital signs from.

    To implement the kind of demo you are describing, you will need to make two important changes. First, you will need to modify the chirp configuration so that there is a large enough maximum range for the room dimensions stated in your previous post. Second, you will need to modify the processing chain to manually specify the range bin to extract from.

    Regards,
    Kyle
  • 0 in reply to Kyle Cousino
    Intellectual 930 points

    Basically, my project purpose is a combination of people tracking and vital sign.

    What I had found was that FOV of vital sign project was so narrow. If I move 10 degree left from 0.7 meter away, it fail to measure it.

    [1] What is FOV of vital sign project in configuration 0.3 Min ~0.7 Max range?

    [2] I would like to have two functions in the following:

    1) I want to find(track) a person in room 5X5 Meter^2.

    2) and measure his/her vital sign in that location. Accordingly if I change the chirp configuration, it looks like not be met in performance perspective.

    Therefore, what I thought of was that one 1642 board for tracking a person to maximize perople tracking performance and the other 1642 board for vital sign measurement.

    Can I develop it with one board only? or you think I will need two boards for this considering performance and ruburstness.

    Thanks for your great idea in advance,

    BR, 

    kisub

  • 0 in reply to kisub Jung
    TI__Mastermind 24955 points
    Kisub,

    Please refer to my previous post. This post contains all of the relevant information needed for development.

    For the vital signs project, the sensor is intended to be placed directly in front of the person as specified in the Quick Start Guide and Developer's Guide.

    Combining the two labs to run on single device is possible. It will likely depend on the combined size of the application code and assuming that it will fit into the available device memory. Please also keep in mind the placement of the sensor when trying to consolidate these labs into a single device. For the people counting, the sensor is placed high off the ground angled slightly down and in some cases is mounted parallel to the ground at a ceiling height. In the second case, trying to track vital signs with the sensor parallel to the ground would likely not be possible.

    Regards,
    Kyle