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IWR6843AOP: 6843AOP Decreasing sampleRate can not work for saving power and avoid hot temperature

Chao Xu
Prodigy 40 points
Part Number: IWR6843AOP
Other Parts Discussed in Thread: IWR6843

Tool/software:

Hello Experts,

    We have meet a problem, that we use 6843aop for vitalsigns, and want decrease the power and avoid hot temperature with CFG file, but it can't work, it's similar to xwr68xx_profile_VitalSigns_20fps_Back.cfg file. while the *Back.cfg file also can't work.

The Cfg file in hardcode is as below, if we change numAdcSamples and digOutSampleRate to 200 and 4000 of profileCfg Cmd, it will works.

:

"flushCfg",
"dfeDataOutputMode 1",
"channelCfg 1 1 0",
"adcCfg 2 1",
"adcbufCfg -1 0 0 1 0",
"profileCfg 0 60.25 7 6 57 0 0 65 1 100 2000 0 0 40",
"chirpCfg 0 0 0 0 0 0 0 1",
"frameCfg 0 0 2 0 50 1 0",
"lowPower 0 1",
"guiMonitor 0 0 1 0 1",
"calibDcRangeSig -1 0 0 0 0",
"vitalSignsCfg 0.05 0.6 256 512 1 0.1 0.05 300000 300000",
"motionDetection 1 20 0.04 0",
Could you help us make it working, We want optimize function for customer's sensors order.
Thanks and Regards,
  • 0
    TI__Genius 11900 points

    Hi

    IWR6843 Vital signs configuration is tightly related to the functionality. Any change in the configuration will lead to failure of functionality. You can look at implementing some of the low power features from the out box demo which can help you to reduce the power consumption. You can look at the below example for low power features implementation

    radar_toolbox_2_30_00_12\source\ti\examples\Fundamentals\xWR6843_Low_Power_Modes

    Regards