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Direction needed for detecting vehicle speed within Building Parking Garage

bb512
Intellectual 480 points
Other Parts Discussed in Thread: IWR1642BOOST, IWR1642

Good day All,

My apologies for my broad question, but I was curious if someone could help me determine which of the mmWave Sensors / developer's kits would be suitable for use in detecting a vehicles speed (6 MPH/ 10 KM/h to about 30 MPH/50 Km/h) within a building's parking garage?  The sensor assembly would be affixed and would be directed along a drive line.  The detection range would be a maximum of  5m-20m ((15 to 60 feet).  I have been testing some other technologies (Lidar, Ultrasonics, etc) and found the field of view too narrow and the result is a lot of false readings.  I am hoping that the mmWave sensors with suitable processing would provide more consistent results.

Lastly, with regards to the mmWave developer kits... do they require off-board processing (e.g. PC and software) for basic speed calculations, etc?

Thanks in advance!

Cheers,

Sam

  • Former Member
    0 Former Member

    Hello Sam,

    The traffic monitoring demo would be a good starting point for the use case you have described. This demo uses the IWR1642BOOST EVM

    • In this demo, a clustering and grouping algorithm is used to mitigate multipath reflections/false detections
    • The IWR1642 device includes an onboard DSP which enables the tracker algorithm and onboard speed calculations
    • No external PC is needed other than for visualization in the demo
    • The horizontal/azimuth field of view is ~120 degrees for the antenna on the IWR1642BOOST EVM (changing antennas would change the FOV)
    • The detection range and speeds you are interested in have been demonstrated with the demo.

    However, please note that it was primarily developed for monitoring traffic at a stoplight. There would need to be additional modifications for your use case. The processing chain on the device does determine the speed of each of the tracked objects/vehicles but it is not currently being displayed. The source code is provided so you could modify the GUI to display this parameter. 

    For more details on the demo please see:

    Example video: https://youtu.be/B3R-3rzmzXU

    Reference design with test case/performance results: www.ti.com/.../TIDEP-0090

    Latest open source software: dev.ti.com/.../

    You would need an IWR1642BOOST EVM to run this demo: 

    Amanda

  • 0 in reply to Former Member
    Intellectual 480 points
    Good day Amanda,
    Thank you for the excellent and thorough information! It is very much appreciated!

    Cheers,

    Sam