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Sourcing Vehicle Sensor Systems

Todd Robinson
Prodigy 35 points
Other Parts Discussed in Thread: AWR1642

Hello all,

I am writing to seek advice on sourcing sensors and components for a project that I developing.

Overall, my objective is to capture the distance between automobile X from automobile Y in second intervals (see graphic below) for the range highlighted in red.


​

Below are the questions I have with respect radar systems.

  1. Would a SRR or MRR sensor be better for capturing distance data up to 30 feet?
  2. What sensor and processing unit configuration would allow me to achieve the above mentioned data capture?
  3. How many sensors would be needed to capture the distance for the range outline in red?
  4. I need to sensor data to be exported in MS Excel format.  What hardware/software would I need to capture?

Please notify me If any part of my inquiry needs further explanation.  Any guidance you can provide will be helpful and much appreciated.

Cordially,

Todd 

  • 0
    TI__Mastermind 18500 points

    Hi Todd, 

    The image you initially attached does not appear to be showing up correctly. Could you please re-attach it?

    Answers to your questions: 

    In general, I would suggest you checkout the forum FAQ if you have not done so already: e2e.ti.com/.../wiki

    Also, check out the mmWave sensing estimator tool and associated mmWave training series: 

    https://training.ti.com/mmwave-sensing-estimator-overview

    https://training.ti.com/mmwave-training-series 

    Answers to your questions: 

    1. Would a SRR or MRR sensor be better for capturing distance data up to 30 feet?

      This would probably be considered an MRR application. But these names are just blanket categories. The real question is how much range, range resolution, field of view...etc...your sensing application requires. See the sensing estimator and the associated training series for more help defining requirements. 

    2. What sensor and processing unit configuration would allow me to achieve the above mentioned data capture?

      Any of the AWR/IWR/14/16x boosterpack EVM come with a basic "out of box" demo that sets up an FMCW chirp and exports this data to serial UART port. You can then capture this on any PC with any program you want. TI provides a web application to preview the data to get users started. 

      http://www.ti.com/tool/awr1243boost 

      http://www.ti.com/tool/awr1642boost 

    3. How many sensors would be needed to capture the distance for the range outline in red?

      I think this was referencing something in the picture that failed to attach. Can you please re-attach?

    4. I need to sensor data to be exported in MS Excel format.  What hardware/software would I need to capture?

    See my answer to your question #2 above. See the following app note as well: http://www.ti.com/lit/an/swra581/swra581.pdf 

    Please let me know if that answers all of your questions. 

    Thanks,

    Randy

  • 0
    Prodigy 35 points

    Hello,

    Per your request, I am attaching the image.  

    Thank you,

    Todd

  • 0 in reply to Randy Rosales
    Prodigy 35 points

    Hello Randy,

    Thanks for providing the links which I will review and provide feedback.

    I am only looking to detect vehicles no more than 30feet away from the vehicle I will be operating. I have re-attached the image above.

    Regards,
    Todd

  • 0 in reply to Todd Robinson
    TI__Mastermind 18500 points

    Hi Todd,

    Thanks for posting the picture. This seems like a very typical MRR automobile range-finder application. A single AWR1642 would be a good fit in this application. AWR1642 includes 4 RX and 2 TX paths. With the AWR1642 Boosterpack TX antenna configuration, this gives you elevation or azimuth direction of arrival (depending on eval kit mounting relative to the host vehicle) across about +/30 degrees of FOV. For larger RCS objects like automobiles and motorbikes a single sensor is more than sufficient for detection. But this all depends on the exact RCS of your intended targets. The mmWave sensing estimator can help you understand the limits there: training.ti.com/mmwave-sensing-estimator-overview

    Again, I recommend going through the entire mmWave sensing training series our team has developed. Many of your questions are answered there: training.ti.com/mmwave-training-series

    I think that answers all of your initial questions. Please let me know if you need more assistance.

    Thank you,
    Randy