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Title:
METHOD FOR DIAGNOSING ABNORMALITY OF OPERATING PART AND METHOD FOR DIAGNOSING ABNORMALITY OF COMPRESSOR VALVE
Document Type and Number:
Japanese Patent JP2002041143
Kind Code:
A
Abstract:

To provide a method for diagnosing the abnormality of an operating part capable of individually diagnosing the abnormality of a plurality of operating parts on the basis of an acoustic signal.

An acoustic signal obtained by a microphone 10 is recorded in a data recorder 20. The acoustic signal is filter-processed by a filter device 21 so that at least one filter processing signal in which at least one kind of acoustic waveform corresponding to the frequency components of a sound outputted from at least one operating part of a plurality of operating parts clearly appears can be obtained. A data analyzer 22 judges the generation of any abnormality in each operating part on the basis of the acoustic waveform.


Inventors:
ISOBE HIROSHI
OKADA KAZUHIDE
HIOKI TERUO
HAYASHI JIRO
Application Number:
JP2000231590A
Publication Date:
February 08, 2002
Filing Date:
July 31, 2000
Export Citation:
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Assignee:
CHIYODA CHEM ENG CONSTRUCT CO
International Classes:
G01H3/08; F04B49/10; F04B51/00; F16K37/00; G05B23/02; (IPC1-7): G05B23/02; F04B49/10; F04B51/00; G01H3/08
Domestic Patent References:
JPH11118592A1999-04-30
JPH02151732A1990-06-11
JPH0894497A1996-04-12
JPH05126980A1993-05-25
JPH03269221A1991-11-29
JP2000009048A2000-01-11
JPH0599475A1993-04-20
JPH08247076A1996-09-24
JPH10281859A1998-10-23
JPS62291520A1987-12-18
JP2000081813A2000-03-21
JPH10133740A1998-05-22
Attorney, Agent or Firm:
Tsugu Nishiura Haru



 
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