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IWR6843: 50m lab appears to be 6m people count demo

Charlie Jenkins
Prodigy 200 points
Part Number: IWR6843

Thank you for this part and the information that goes with it.  I have uncovered what appears to be early information on the 50m people detection capability of the 6843 but with old content in the TI-Res.  The user guide for this lab and the customization guide all indicate the 6m range of the people counting demo on the 1642 (graphs and descriptions).  Where or when might we see the 50m information and code for the 6843? 

  • 0
    TI__Mastermind 28055 points

    Hi Charlie,

    The lab content and chirp has been updated for 50m detection. The use guide steps are the same, so you can follow the steps in the user's guide to run the demo, even if some of the pictures are not yet updated.

    Regards,

    Justin

  • 0 in reply to Justin Curewitz
    Prodigy 200 points

    Thank you Justin. We have been running the 50m demo on the 1642 with limited success. 30m best performance.  We are going to try other 1642 EVMs we have to see if we have compromised the inputs with handling.

    Is there a comparison paper on the differences of the 6843 compared to 1443 and 1642?  Specifically if the new antenna pattern on the 6843 has better performance.  Our goal is 100m.  We can use a narrower field of view if that improves detection distance.  Range resolution can be low too.

  • 0 in reply to Charlie Jenkins
    TI__Mastermind 28055 points

    Hi Charlie,

    The 6843 50m demo has an improved version of the tracker, so you will see somewhat better performance.  Ensure that you are only tilting the device down about 2 degrees, so that the center of the beam is covering the maximum amount of area. If the EVM is tilted 10 degrees down, the center of the beam will be pointed at the ground about 10-15 m in front of the device, resulting in poor performance.

    You will not get 100m detection with the default EVM antenna - this will require a custom antenna.

    Regards,

    Justin

  • 0 in reply to Justin Curewitz
    Prodigy 200 points
    I assumed the beam pattern as is would not support that range. We are attempting to create settings with the current antenna to narrow the pattern if that can be done electronically. Does TI have any recommendations for an antenna design house should we need to physically design a new array?
  • 0 in reply to Charlie Jenkins
    TI__Mastermind 28055 points

    Currently, you will not be able to extend the range through configuration. TI has multiple 3rd parties working on modules for different use cases, including increased range. We can connect you as you move towards a product.

    Regards,

    Justin