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BOOSTXL-PGA460: Noise Locator

Syed Akhter
Prodigy 10 points
Part Number: BOOSTXL-PGA460

Tool/software:

We have an ultrasonic flowmeter that operates at 47kHz and there is something in the area that is causing interference. Can we use the BOOSTXL-PGA460 to point in different directions to see where the noise is coming from?

On the "Data Monitor" screen, I suppose I need to set it to "Listen Only" under "Command" box. Do I need to set "Transmit" to 47kHz on the "General" page? Is it possible to scan for all frequencies in the 45-50kHz range?

  • 0
    TI__Genius 13670 points

    Hi Syed,

    Thank you for posting to the Sensors forum!

    Unfortunately, there is not a way for you to use these ultrasonic sensors to observe the noise and pinpoint where it is coming from. You would have to know what object is generating the noise and how far away it is in order to locate the object itself.

    We do have a document describing how to use ultrasonic transducers for triangulation and tracking, but I am not too sure how relevant it is to what you are trying to accomplish as what you have described seems different that what the document is talking about.

    Syed Akhter said:
    On the "Data Monitor" screen, I suppose I need to set it to "Listen Only" under "Command" box.

    The burst in the burst/listen command is used to generate a signal to excite a transducer connected to the device via the OUTA and OUTB pins. If you do not need to use this EVM to excite a transducer (which typically happens when you have two devices in a bistatic configuration with one device that generates the signal and one that just listens for the echo), then just using the Listen Only command should be fine. 

    Syed Akhter said:
    Do I need to set "Transmit" to 47kHz on the "General" page?

    The frequency for the transducer can be set on this page.

    Syed Akhter said:
    Is it possible to scan for all frequencies in the 45-50kHz range?

    You would need to manually input the frequencies as you step through the range.

    Best,

    ~Alicia

  • 0 in reply to Alicia Rosenberger
    Prodigy 10 points

    Thanks for the reply. I will be visiting the site next week to conduct this experiment and will post my results here. Using Listen Only mode, I will point the transducer in different directions and see which one gives me the highest amplitude at 47kHz. Take a few steps in that direction. Rinse and repeat. As long as I can tell which big piece of equipment (compressor, motor, flare tip) the noise is coming from, it will serve my purpose (doesn't need to be pin point accuracy).

  • 0 in reply to Syed Akhter
    TI__Genius 13670 points

    Hi Syed,

    I look forward to hearing the results from your experiments!

    Best,

    ~Alicia