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Visitor II
July 26, 2021
Solved

Frequency range of IIS3DWB vibration sensor for velocity?

  • July 26, 2021
  • 1 reply
  • 1358 views

Hi, what is the frequency range of IIS3DWB vibration sensor for velocity? Thanks!

    This topic has been closed for replies.
    Best answer by TBomb.1

    For an harmonic motion (and for a generalized motion as well), the maximum frequency for the acceleration is the same as the velocity one.

    https://en.wikipedia.org/wiki/Simple_harmonic_motion

    For the IIS3DWB case, the maximum ODR is 26.67kHz, but the flat frequency response range is from DC to 6 kHz (±3 dB point) as stated in the datasheet, so 6kHz is also the maximum detectable frequency for the velocity.

    https://www.st.com/resource/en/datasheet/iis3dwb.pdf

    Tom

    1 reply

    TBomb.1Answer
    Visitor II
    July 26, 2021

    For an harmonic motion (and for a generalized motion as well), the maximum frequency for the acceleration is the same as the velocity one.

    https://en.wikipedia.org/wiki/Simple_harmonic_motion

    For the IIS3DWB case, the maximum ODR is 26.67kHz, but the flat frequency response range is from DC to 6 kHz (±3 dB point) as stated in the datasheet, so 6kHz is also the maximum detectable frequency for the velocity.

    https://www.st.com/resource/en/datasheet/iis3dwb.pdf

    Tom

    Visitor II
    July 7, 2022

    Hello @Community member​ ,

    ISM330DLC - 3D accelerometer, How to check the over limit vibrations?

    Configured the sensor ISM330DLC - ODR set to max 6.6KHz (which is max limit for chip).

    If sensor ISM330DLC is exposed for heavy vibrations in the range above 3.3kHZ, for example 4kHz.

    Is there a way that sensor provides any information or register update to indicate to the user that vibration is over limited?

    Please assist to solve the issue.

    Regards,

    Srinu