• State Resolved
  • Locked Locked
  • Replies 6 replies
  • Subscribers 30 subscribers
  • Views 329 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

AWR1642BOOST: SRR SNR threshold

nicky liu
Prodigy 250 points
Part Number: AWR1642BOOST
Other Parts Discussed in Thread: AWR1642

Hello:
I am using the SRR paradigm, but encountered two problems
1. When the AWR1642 is installed on the car, the vibration will affect the sensing distance when the car is moving (the sensing distance is less than 40m)
2. The SRR example is relatively insensitive to the detection of motorcycles and bicycles. It can only be detected within a distance of less than 15m in a stationary state.
I think reducing SNR may be one of the ways, but I am not familiar with how to adjust SNR, can you give me some guidance? Or do I need to try something else?

  • 0
    TI__Mastermind 31680 points

    Hello Nicky, 

    Thankyou for reaching out to us on TI E2E support forums. 

    Currently, most of our support staff is on leave due to Diwali Holidays in India, hence I apologize for the delay in response. 

    We will be able to get back to you by the end of this week or early next week. 

    Thankyou for your patience. 

    Regards,

    Ishita

  • 0 in reply to Ishita Kochar
    TI__Guru*** 147994 points

    Hi,

    Can you please let us know how the AWR1642 is mounted on the car?

    What is the chirp configuration used when 40m max range is achieved?

    The SNR threshold has been adjusted for the SRR algorithm and probably should not be lowered

    thank you

    Cesar

  • 0 in reply to Cesar
    Prodigy 250 points

    Hello,
      1. I installed it on the back of the scooter, the installation method is like the picture below


      2. The chip configuration is exactly the same as the SRR example, I did not modify it

  • +1 in reply to nicky liu
    TI__Guru*** 147994 points

    Thank you for the picture.

    I think the reason for the reduced performance is the sensor enclosure.

    To confirm this could you please test the performance without enclosure?

    thank you

    Cesar

  • 0 in reply to Cesar
    Prodigy 250 points

    Hello:
       I have tried to test when the radar module is not moving (with the housing installed), and it can detect a vehicle of about 80 meters, but when it starts to move, the detection distance can only reach about 40 meters. So I think this may be related to the factor of vehicle vibration. So I would like to ask if there is a way to adjust the software parameters to optimize

  • 0 in reply to nicky liu
    TI__Guru*** 147994 points

    Hi,

    I think the problem that you have is that the sensor is not properly fixed to the housing. So you probably have relative vibrations between the sensor and the housing.

    You need to find a better way to attach the sensor to the housing.

    We have performed tests without housing with sensor mounted on a car, with car driving and we did not have any issue from the vibrations.

    So I think that in this case the issue is not the absolute vibrations but the relative vibrations between sensor and housing. It is a mechanical problem

    thank you
    Cesar