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System, method, and apparatus for using the sound signature of a device to determine its operability

  • US 8,155,326 B2
  • Filed: 10/08/2008
  • Issued: 04/10/2012
  • Est. Priority Date: 10/09/2007
  • Status: Active Grant
First Claim
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1. A system for monitoring the operation a power system device for the occurrence of an abnormal event comprising:

  • i) a microphone acoustically coupled to the power system device, the microphone producing an analog signal corresponding to sound waves observed by the microphone;

    ii) an analog-to-digital converter for receiving the analog signal and producing a digital signal corresponding to the analog signal;

    iii) a processor comprising a memory, configured to;

    receive the digital signal;

    record in the memory a normal event sound signature corresponding to an operation of the power system device; and

    ,determine whether the abnormal event has occurred.

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