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IWR6843AOP: IWR6843AOP

Part Number: IWR6843AOP

I need to develop a driver vital monitoring system that provides the heart rate, breath rate, and heart rate variability of the user. I have seen the demo, and from the demo  ( Vital Signs With People Tracking User Guide (ti.com) ), it shows that heart rate and breath rate will be received from the sensor. Kindly provide me the following information:

1. Feasibility of getting a heart rate variability value from the sensor
2. Is the sensor able to produce an ECG diagram?
3. Output time interval
4.GUI only appears in a minimised window; it does not appear in a large window. In that window, PK values are also hidden. Please offer an answer as to how to acquire a full window.
5. How to extract Heart rate and Breath rate values other than GUI

For your reference
The mathematical formula to calculate heart rate variability (HRV) from heart rate value is:

RMSSD = sqrt(mean(abs(diff(RR_intervals))^2))
where:

RMSSD = root mean square of successive differences
RR_intervals = the time intervals between successive heartbeats
mean = the average
abs = the absolute value
diff = the difference between two values
To calculate RMSSD, you first need to calculate the difference between each successive RR interval. Then, you square each of these differences and take the average. Finally, you take the square root of the average to get RMSSD.

  • Hi Arjun,

    Thanks for reaching out on our forums. Zigang will get back to you on this tomorrow but here are some initial answers:

    1. Feasibility of getting a heart rate variability value from the sensor

    The accuracy of the HR is +/-5bpm and comes out every frame. I am not sure if that meets your requirements for HRV or not. 


    2. Is the sensor able to produce an ECG diagram?

    No


    3. Output time interval

    depends on frame rate, smallest frame rate is an output every ~60ms. This can be configured


    4.GUI only appears in a minimised window; it does not appear in a large window. In that window, PK values are also hidden. Please offer an answer as to how to acquire a full window.

    What do you mean by PK values?


    5. How to extract Heart rate and Breath rate values other than GUI

    From the UART data stream, see the Understanding UART Data Output for more information.

    Thank you,

    Angie