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Original question:

IWR6843AOP: Reduce power consumption

IWR6843AOP: Reduce power consumption

Divya Teja Settimali
Intellectual 360 points
Part Number: IWR6843AOP

Hi,

This is a related question.

We did try to Implement the Idle mode commands like in Low-power example on area scanner. Now we have a few doubts

1. If the sensor is hardcoded with cfg and running and consuming the same amount of power as soon as we turn it on. Is there way to reduce the power consumption of the device while it is running without compromising with the range or performance? we do not think this command is helping me in that. Please correct me if I'm wrong.

2. We have already tried reducing the idle time on the cfg file and also the txOutPower reduced by 6 db.

3. We tried to run the bin file of the low power demo and We do not see an output or anything happening on the visualizer it just felt like the sensor is not giving out any data. Did we understand something wrong?

We can send you the exact cfg file I'm using on the sensor if it helps you to understand. We would wait to hear from you.

Regards,

Divya Teja Settimali

  • 0
    TI__Guru 50240 points

    Hi Divya

    It is not a hard coded configuration. The chirp config folder contains a standard 2d_profile chirp and the the Idle Mode commands.

    1. Are you referring to the idlePowerDown/idlePowerCycle commands or another cfg?

    2. To reduce active mode consumption you will want to decrease either chirp duration, number of chirps, or number of Tx antenna.

    3. Can you elaborate on how you are running the demo? The low power demo uses the standard SDK demo but includes function to put device into idle mode.

    Regards,

    AG

  • 0 in reply to Akash Gondalia
    Intellectual 360 points

    Hi Akash,

    Thank you for the reply.

    Yes, I understand that low power is not hard coded configuration. I just gave a scenario if it is hard coded configuration and it is in active mode consumption as soon as it is powered on. But I guess you did answer my question that is "either chirp duration, number of chirps, or number of Tx antenna". Are they the only paraemeters I have to check or Is there anything else? 

    Could you just confirm if idle mode literally means the sensor is in non-functional mode for a particular period of time and then gets into functional mode?

    I would wait to hear from you.

    Regards,

    Divya Teja Settimali

  • 0 in reply to Divya Teja Settimali
    TI__Guru 50240 points

    Hi Divya

    Active mode refers to the time when the device is on, fully-functional, and chirping (or ready to chirp). For this state the three components Duration, number of chirps, and number of Tx antenna should be reduced in order to reduce active mode power consumption.

    I should clarify that Idle Mode in the Low Power Demo is the alternate state of Active Mode, where the device is left in a low power state with limited functionality. This is different from idleTime that is specified in the profileCfg in chirp config.

    Regards,

    AG