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System and method for monitoring vibration isolators

  • US 9,562,807 B2
  • Filed: 12/28/2015
  • Issued: 02/07/2017
  • Est. Priority Date: 09/14/2011
  • Status: Active Grant
First Claim
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1. A method for monitoring a vibration isolating connection, the method comprising:

  • transmitting light from a light source along an optical path to be received by a single photon avalanche diode (SPAD) optical sensor, a length of the optical path being varied by deformation of the vibration isolating connection;

    operating the light source to interleave a plurality of different modulation frequencies; and

    determining from received light a value indicative of the length of the optical path.

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