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IWR6843AOP: Unable to distinguish between ramp (up)/staircase (going up) and vertically standing object.

Rohan Dicholkar
Prodigy 40 points
Part Number: IWR6843AOP

Hello TI Team,

I am evaluating capability of IWR 6843AOP SoC to distinguish between ground and object. I am considering a scenario of approaching a ramp/staircase from flat ground and in another scenario approaching to a object placed on flat ground. How the sensor able to distinguish between object and ground. 

I am presently referring to the https://dev.ti.com/tirex/explore/node?node=AJUAr28VDQvg3De-xsntpg__VLyFKFf__LATEST example for cliff detection and it works for me. I am facing challenge in detecting ramp/uphill.

Please suggest me if any example is available for the same

Thanks,

Rohan

  • 0
    TI__Genius 14415 points

    Hello Rohan,

    You should be able to modify the cliff detection code to do this. You essentially need the opposite logic. If you look at the upward facing angle bin instead of the downward facing, it may show if there is a large object or stairs/ramp that fades. We do not have any demo that does this, but the chirp config provided in the cliff detection should help give the necessary resolution.

    Regards,

    Jackson

  • 0
    Prodigy 40 points

    Hello Jackson,

    Thanks for the response. 

    The upward facing angle bin will be showing similar data for ramp/staircase as well as any object standing on the floor. How shall we differentiate between stair/ramp and object. As in case of object, I may want to bypass it but in case of stair/ramp I may want to stop driving.

    Thanks,

    Rohan

  • 0 in reply to Rohan Dicholkar
    TI__Genius 14415 points

    Hello,

    Some objects may look like a ramp, but that will be very difficult to distinguish. You may have to experiment with the objects you expect to encounter and see if there are patterns you can look for vs. stairs or ramps. I think using the range data similarly to the example above should be a good place to start.

    Regards,

    Jackson