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IWR6843: About multi-function implementation using IWR6843

jg noh
Prodigy 80 points
Part Number: IWR6843

Hello, TI experts.

I am planning to use IWR6843 to create a custom board that supports fall detection, breathing detection, and gesture recognition functions.

My question is whether one radar sensor can support several functions mentioned above at the same time.

I'm seeking advice from an experienced expert.

thanks

  • 0
    TI__Genius 9010 points

    Hi

    Thanks for your query. Please allow us a couple of days to respond

    Regards

  • 0 in reply to Abhishek Karkisaval
    TI__Genius 16641 points

    Hello, 

    It will depend on what functionality you are expecting. For example, what exactly do you mean by "at the same time"? In terms of the memory requirement for storing the code/algorithms, it should be no problem. However, these features will likely require distinct chirping profiles for optimal performance. So you may find it difficult/not possible to implement each of these features running at the exact same time.

    Regards,

    Josh

  • 0 in reply to Josh Dye
    Prodigy 80 points

    hello josh

    I am a newbie who has never worked with radar sensors.
    My question is whether one radar sensor can detect multiple events such as fall detection, gesture, breathing detection etc.
    For example, I'm curious if there are any restrictions, such as not being able to detect gestures if we set up a profile for fall detection.

    Thank you for your answer.

  • 0 in reply to jg noh
    TI__Genius 16641 points

    Hi,

    No problem. Thank you for clarifying. In short, yes, there are such restrictions but you may be able to work around them and still stay within your requirements. For example, it is possible to set up the radar such that it will start with a specific configuration then at a later time, either by some external command from a host or by meeting some condition then the configuration of the radar can be updated for the other function. For example, you may be able to start the radar with a profile which is optimized for fall detection then alongside the normal fall detection processing you can have some condition for swapping to a gesture recognition configuration (perhaps when a target is detected within a certain range of the sensor) then if no gestures are detected in a certain timeframe you can again update the configuration and revert to the main application. A similar technique could be used for switching to a breathing rate detection configuration. So if something like what I have described would still meet your requirements then a single sensor should be sufficient.

    Now it's important to note that the scenario I described is simply an example and we do not currently have any example projects which achieve this functionality. So there would be some amount of work required on your side to develop code to run on the device which includes the required processing for each of these applications as well as the means to switch between the different configurations for each application. For the configuration switching piece we actually do have an example which you can refer to. The example describes switching between a power-saving presence detection configuration and a high performance tracking configuration but the techniques for implementing the switch should be useful to reference. The example can be found here. 

    Best Regards,

    Josh

  • 0 in reply to Josh Dye
    TI__Genius 16641 points

    Also, as it is your first time using radar sensors, I wanted to point you to our Radar Academy on dev.ti.com incase you have not already seen it. The Radar Academy is where much of our radar training material is hosted and I feel it could be very beneficial if you are interested in learning more about the technology as a whole.

    Best,

    Josh

  • 0 in reply to Josh Dye
    Prodigy 80 points

    Your answer helped me a lot. Thank you so much.