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Acoustic sensing device, system and method for monitoring emissions from machinery

  • US 20070028693A1
  • Filed: 07/10/2006
  • Published: 02/08/2007
  • Est. Priority Date: 09/16/2002
  • Status: Abandoned Application
First Claim
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1. An acoustic sensing device for use in transmitting to a measuring instrument detection signals indicative of sound wave levels detected from machinery, said acoustic sensing device comprising:

  • (a) a housing assembly constructed for removable attachment between a surface mounting region of the machinery and the measuring instrument to define a coupled state; and

    (b) an acoustic emissions sensor disposed in an interior of said housing assembly and operative when said housing assembly is in the coupled state to detect sound waves propagating through the surface mounting region of the machinery, wherein said acoustic emissions sensor includes a piezoelectric transducer adapted upon exposure to the sound waves to mechanically stress and produce corresponding transducer signals, and conditioning circuitry for receiving said transducer signals and for producing said detection signals for processing by the measuring instrument, said conditioning circuitry including a pre-amplifier.

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