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Piezo sensor vibration monitoring

Aman Gupta63
Prodigy 35 points
Other Parts Discussed in Thread: TIDM-WLMOTORMONITOR, LMP7716

Hi

In this reference design

A Piezo sensor is used which outputs IEPE ,  how you have taken this output in your ADC?

The reference design is exactly what we want to do, pls explain further

  • 0
    Guru 46710 points

    Aman Gupta63 said:
    A Piezo sensor is used which outputs IEPE ,  how you have taken this output in your ADC?

    Through LMP7716 amplifier.

    You can find answer by looking at schematics which is provided. Reading documentation also will not hurt.

  • 0 in reply to Ilmars
    Prodigy 35 points
    Thank you, I am sorry I am not from Electrical background and even after reading design doc I couldn't spot that

    Last question , are we able to get velocity and acceleration both after putting IEPE signals to amplifier?
  • 0 in reply to Aman Gupta63
    Guru 46710 points

    Aman Gupta63 said:
    Last question , are we able to get velocity and acceleration both after putting IEPE signals to amplifier?

    Yes. You need to calibrate each device using digitally controllable shaker and calibration accelerometer, create FFT_magnitude / acceleration calibration curves. Check documentation pages 17, 18, 19.

    BTW I'm afraid that IEPE -type sensor is not used in this design.

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