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Relative vibration measurement

  • US 8,344,941 B2
  • Filed: 01/20/2010
  • Issued: 01/01/2013
  • Est. Priority Date: 01/20/2010
  • Status: Active Grant
First Claim
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1. A method of detecting motion in a component that is part of a structure, the method comprising:

  • positioning a radar detector on the structure;

    orienting the radar detector such that the radar detector illuminates the component with transmitted radio frequency signals;

    receiving reflected radio frequency signals from the component with an antenna;

    generating intermediate frequency signals based on differences between the transmitted radio frequency signals and the reflected radio frequency signals;

    measuring the intermediate frequency signals; and

    analyzing the intermediate frequency signals to establish a regression relationship between the component movement and at least one of the amplitude or frequency of the intermediate frequency signals.

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