Acoustic method and apparatus for detection and...

Details Acoustic method and apparatus for detection and... Acoustic method and apparatus for detection and...

2007-04-25

2011-11-22

Saint Surin, J M (Department: 2856)

Measuring and testing

Vibration

Resonance, frequency, or amplitude study

C073S592000, C073S629000, C073S659000

Reexamination Certificate

active

08061205

ABSTRACT:
An acoustic method and apparatus detects or characterizes a medium in a structure which may be a container, such as a pipeline for transportation of oil, gas, or hydrocarbon condensate. A pulse of broadband acoustic energy is emitted towards the structure by a first transducer. A return signal is generating by a second transducer from acoustic energy returned from the structure in response to the emission of acoustic energy. A return signal spectrum representing acoustic spectral components of the acoustic energy returned from the structure is derived from the return signal, and the medium is detected or characterized by applying a return signal processing medium detection or characterization algorithm to the return signal spectrum.

REFERENCES:
patent: 6513385 (2003-02-01), Han et al.
patent: 6644119 (2003-11-01), Sinha
patent: 7114390 (2006-10-01), Lizon et al.
patent: 7523640 (2009-04-01), DiFoggio et al.
patent: 7921691 (2011-04-01), DiFoggio et al.
patent: 7963165 (2011-06-01), Sinha

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