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IWR6843AOPEVM: Vital Signs With People Tracking

yui.uehara
Prodigy 60 points
Part Number: IWR6843AOPEVM
Other Parts Discussed in Thread: IWR6843

Hi,

I try to work Vital Signs with People Tracking demo.

I want to ask some questions. (When I contacted the chat support, I was advised to post here.)

1. How could I log both of heart rate and breath rate (ex. csv).

2. What the red and blue graphs of the demo's visualizer display? Units?

3. I want to develop based on the demo.
Can I get some detailed documents or information for developers.

4. When I contacted chat support, I heard that we can get source code from the following SDK, but which code in the SDK should I see?
https://www.ti.com/tool/MMWAVE-SDK

5. In addition to question 3 and 4, the sensors forum states that the source code and development guide is available under NDA.
Should we use SDK under NDA?
https://e2e.ti.com/support/sensors-group/sensors/f/sensors-forum/1206076/iwr6843aopevm-vital-signs-with-people-tracking-demo

Best Regards,

  • 0
    TI__Expert 8790 points

    Hi,

    1. It is not possible to log directly through the visualizer but you can send the .cfg through tera term and log the UART output and you need to decode the TLV to extract the heart rate and breathing rate

    2.Red and blue lines displays relative frequency and amplitude of heart rate and breathing rate detected. X axis is the number of frames, y-axis does not have a unit. 

    3. You need to have NDA with TI to access the source code and documents. If you do not have a NDA already, please reach out to TI FAE

    4.SDK provides you the drivers to operate with IWR6843. It does not need NDA. You can download the SDK here https://www.ti.com/tool/MMWAVE-SDK

    Vital signs is a separate application which needs NDA. Vital signs applications makes use of SDK

    5. SDK usage does not require NDA. You can download in the above link. Access to vital signs source code is needs NDA

    Regards,

    Abhishek 

  • 0 in reply to Abhishek Karkisaval
    Prodigy 60 points

    Thank you for your response.

    I have some additional questions regarding question 1.
    ・Where can I find the instructions for .cfg? (Includes TLV decoding steps)
    ・What information should I write in .cfg for logging of heart rate and breathing rate?

    Best Regards,

  • 0 in reply to yui.uehara
    TI__Expert 8790 points

    Hi,

    1.TLV decoding format will be provided with the source code, which is provided after NDA is signed

    2.Below commands in the .cfg files are related to vital signs

    vitalsign 15 300
VSRangeIdxCfg 0 21

    For the first command "vitalsign"
    Parameter 1 is number of frames before the vital sign data is output on the UART line. As you increase this number you will get more 
    stable output
    Parameter 2 is window size. It need not be changed

    For the second command "VSRangeIdxCfg"
    Parameter 1 indicates whether search to be done in fixed range or information for search is obtained from tracker
    Parameter 2 indicates the range bin to check

    Regards,
    Abhishek