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IWR6843AOP: Distance between 2 people for entryway people counting

Part Number: IWR6843AOP

Tool/software:

Good afternoon.

We would like to understand what is the minimum distance between 2 people for accurate counting of 2 or more people in a group.

From our testing, we find distance less than 1.5m can be slightly inaccurate and not consistent.

The distance seems to be the same when reviewing TI's demo video (https://www.ti.com/video/6250724938001) for such application, although we don't know if this is the limitation.

What we would like to seek advice on is are there anything we can do to optimize and reduce the distance between 2 people for a more accurate and reliable counting in the config setting, or is this the limit and best we can do for such application?

Seek your advice.

Thank you.

Regards,

  • Hi,

    We are looking into your query. Please allow us a day or two to respond back.

    Regards

  • Hi

    Yes, the distance between 2 persons needs to be 1.5m for accurate detection. This is due to the fact that sensor is trying to determine the track based on the size specified for the track. You can try modifying below 2 parameters

    Gating parameter specified the size of the object you are trying to track. You can reduce the dimensions of the person from all sides

    gatingParam 3 2 2 3 4

    In allocation param, you can reduce the overall area for consolidation of points for track detection from 1.5m to 1m

    allocationParam 5 10 0.01 10 1.5 20

    However, this does not guarantee that you will be able to see the tracks that are closeby. There could be adverse affects such as track loss. 

    Regards