IWR6843AOPEVM: Understanding capabilities and limitations of IWR6843AOPEVM

Ronald Fecso

Part Number: IWR6843AOPEVM

I'm using this radar for HAR and specifically fall detection in a domestic setting. I'm still trying to configure the device parameters by trial and error for my environment for the people counting demo. I was wondering though what the max range and FOV angle the radar can adequately detect, what kind of objects strongly occlude the signal from people in the scene, what kind of conditions add noise to the scene (lighting, orientation, walls, mirrors)?

over 2 years ago

+1 Tim Henderson over 2 years ago

TI__Expert 8802 points

Hi,

1. Please see the documentation here for information about FOV and resolution: https://dev.ti.com/tirex/explore/node?a=1AslXXD__1.00.01.07&node=A__AEHBDXaS3MIoORQMpX07MQ__radar_toolbox__1AslXXD__1.00.01.07

2. Highly reflective materials will add noise to the scene and may cause false detections (or too few detections). As an extreme example, standing behind a metal wall will most likely not allow you to see the human.

3. Lighting will not affect the detection. Orientation will. See the document below about placement of the device for people tracking. Reflective walls like metal or glass will cause more noise. See the documents below about detection and tracking tuning for more information about filtering out this noise.

https://dev.ti.com/tirex/explore/node?a=1AslXXD__1.00.01.07&node=A__AOWuF2v3eDFHAsxFXhvtzQ__radar_toolbox__1AslXXD__1.00.01.07

https://dev.ti.com/tirex/explore/node?a=1AslXXD__1.00.01.07&node=A__AMH81pbICLF3ScBRW5hxsA__radar_toolbox__1AslXXD__1.00.01.07

https://dev.ti.com/tirex/explore/node?a=1AslXXD__1.00.01.07&node=A__AAwhSXiV2o4yQlaiTsMgQg__radar_toolbox__1AslXXD__1.00.01.07

0 Ronald Fecso over 2 years ago in reply to Tim Henderson

Prodigy 90 points

I see a section called Prerequisite 3 - Calibrating the demo configuration for your Antenna Module. If I'm using the other 3d people counting demo (not overhead), is there a similar calibration procedure I need to perform? I don't see one in the user guide.

+1 Tim Henderson over 2 years ago in reply to Ronald Fecso

TI__Expert 8802 points

Hi,

Technically, it would be a good idea to perform the calibration procedure before the other 3D people counting demos, though it is less important for them because they are in wall mounted applications. In overhead we care about angular accuracy in azimuth/elevation directions, whereas in the wall-mounted labs we care more in the range/azimuth space. Hence, this is why the calibration procedure is not listed on the other demo.

Regards,

Tim

Sensors

Sensors forum

IWR6843AOPEVM: Understanding capabilities and limitations of IWR6843AOPEVM