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IWR1642 has very few reflection points

ctc ctc
Intellectual 300 points
Other Parts Discussed in Thread: IWR1642

Hello,

IWR1642 has very few reflection points.What causes this? 

Here is my configuration,How do i change the configuration?I use it for vehicle identification ,Track and identify vehicles within 100 meters.

  • 0
    Intellectual 300 points

    I use IWR1642 for vehicle detection and my routine is lab0013_traffic_monitoring_16xx.The configuration of the checkpoint is referenced by chirp_CONFIGs \ mmW_TM_demo_longrange.cfg and mmW_TM_demo_ph2.cfg.In the detection process, too few points are identified.And the distance is not far enough. I want a detection distance of about 100 meters.I need to change which configuration parameters in MMW_TM_demo_longrange.cfg.

  • 0 in reply to ctc ctc
    TI__Mastermind 23725 points

    Please look at the general comment configuration changes in the post given in link below::

    https://e2e.ti.com/support/sensors/f/1023/p/959549/3545502#3545502

    That would apply to the distance (range) based changes you are seeking to achieve. 

    Can you please confirm that the detection and performance in the range mentioned in the demo is working at your end.

    Thank you,

    Vaibhav

  • 0 in reply to Vaibhav Mahimkar
    Intellectual 300 points

    Hello ,

    I looked at the link you gave me,You see it in there Max Range =  ( Fs * Tc * c ) / ( 4 * B )  =  ( Fs * c ) / ( 4 * S )，Fs、Tc、 c 、B、Which parameters are corresponding to the configuration respectively,I don't understand，Which of these are fixed values，Could you circle it for me？

    And which parameters they correspond to in the figure below?Can you circle it for me?

  • Former Member
    0 Former Member in reply to ctc ctc

    If you refer to the gui/ folder of the Area scanner lab there is a parseCLICommands2Struct and calculateChirpParams. You can refer to both files for mapping of the parameters to equation variables and for equations calculate various parameters.

    Amanda

  • 0 in reply to Former Member
    Intellectual 300 points

    Hello  ,

    According to your instructions, I have entered the directory mmwave_industrial_Toolbox_3_6_1 \ LABS \lab0013_traffic_monitoring_16xx\ GUI and have not found the two files parseCLICommands2Struct and calculateChirpParams,Only see chirpparams_tmdemo.xlsx in lab0013_traffic_monitoring_16xx\docs directory, as shown in the figure below:

    It is incomplete, for example, the doaCfg section has six parameters, but lab0013_traffic_monitoring_16xx\ chirp_CONFIGsmmW_TM_demo_longrange.cfg has seven parameters, as follows:

    doaCfg 3 0 1047 3 600 10 100,The parameter indicates that it is missing, and the parameter does not indicate the specific meaning or value range,

    Is there a specific document? Could you please provide me with a link or guide me to modify the parameters.

    My current problem is that the point cloud data is relatively small and the distance is relatively short. I want the point cloud data to appear 100 meters away, So which configuration parameters Do I need to change?

    Is the small amount of point cloud data a power problem?And this has to do with what parameters？

  • 0 in reply to ctc ctc
    TI__Mastermind 23725 points

    ctc ctc said:

    Hello ,

    I looked at the link you gave me,You see it in there Max Range =  ( Fs * Tc * c ) / ( 4 * B )  =  ( Fs * c ) / ( 4 * S )，Fs、Tc、 c 、B、Which parameters are corresponding to the configuration respectively,I don't understand，Which of these are fixed values，Could you circle it for me？

    And which parameters they correspond to in the figure below?Can you circle it for me?

    For understanding the config parameters please check the mmWave SDK user's guide.