IWR1642: Using IWR1642 for occupancy and vital signs detection

So there's no way to do it other than physically restarting it?

Got it, thanks. By the way, i was trying out the lab and everything turns out fine. But when i tried to reposition the zones to 130cm away from the sensor. The vital signs values became inaccurate (it went over 100 for HR, when it should be 80ish).

The coefficient of the zones are recomputed as stated in the user guide. Zone detection is working fine.

Is there any method or parameter that you can suggest  to solve the problem. Or is this a hardware limitation?

Can you try running just the vital signs demo at 1.3 meter and see if you have errors there? 

There should not be a HW limitation that affects vital signs performance at 1.3m.

I have run just the vital signs demo at these 2 position separately. Could it be that the two positions are not directly in front of the sensor? I redo the VOD coeff training steps. You can see that the training coefficients of the 2 new zones are working fine but when I put it into the od + vital signs lab. it is unable to detect the correct vital signs.

Can you try running the vital signs ONLY demo: https://dev.ti.com/tirex/explore/node?node=ANCtFz-9BY-MsUck4YTbZA__AocYeEd__LATEST

with the same positions not in front of the sensor?

Hi Amanda, 

I have tried the driver vital signs lab with the two positions. However, the lab isnt working as it is supposed to. The values are very low even if Im sitting infront of the sensor, as shown in the images attached. 

I have a IWR1443, so I tried it with the industrial toolbox's vital signs lab (https://dev.ti.com/tirex/explore/node?node=AGiw9uC4lWlb9DCNhqDeWw__VLyFKFf__LATEST. But I realise that the sensor works fine when there is someone directly in front of the sensor.

However, if there isnt anyone, the sensor values are as shown in the images, BR is 0 and HR is above 70. This happens when I tried with the 2 zones position (1.3m away from the sensor). Please advice what when wrong, thank you

Sorry, i dont get what you're referring to how I'm running the vod + vital sign?

I follow the steps in the given user guide

How did you run the lab if you only have a 1443? The lab is not supported on 1443.

No, I have both 1443 & 1642 EVM. I ran the vod + vital signs on a IWR1642. Like what I've mentioned, when running the 1642 with vod + vital signs lab the values returned for the 1.3m zones are inaccurate.

You suggested to try just the driver vital sign with iwr1642 in that 2 zones. The values are very low even if Im sitting infront of the sensor, as  shown in the previous post. The graph is rather flat

As requested to continue the topic on this thread

Im currently using a IWR1642 for the driver vital signs lab from mmwave automotive toolbox 3.1.0. I have followed the steps stated in the user guide, placed myself in front of the sensor (0.3m-0..8m) and stay still at least 30s. However, the gui isnt providing the correct results.

I have also tried different version of the automotive toolbox. I am aware that the lab was suppose to work with a AWR1642BOOST, but one of the forum post say that it should work with IWR1642 too, Please advice what went wrong and how could I solve it.

Hello,

If you use just the 1642 vital signs demo at 0.3 to 0.8m do you see correct results?

Are you sitting in a chair that has a lot of metal? Can you try sitting directly in front of the sensor in an open area (no other objects close by in sensors FOV).

If you can take a picture of your test setup this would be helpful.

Amanda

If you are standing there may be too much motion for accurate vital signs.

This demo is only a proof of concept and you may need to make algorithm improvements to increase range and robustness.