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Patent Searching and Data


Title:
DIAGNOSTIC SYSTEM FOR MACHINE
Document Type and Number:
Japanese Patent JP3251799
Kind Code:
B2
Abstract:

PURPOSE: To obtain a diagnostic system for machine in which reliability is enhanced in the diagnosis of abnormality by detecting the micro difference in the sound generated from the machine containing an oscillatory element or in the oscillatory state thereof.
CONSTITUTION: The diagnostic system for machine comprises means 7, 9, 10, 12 for detecting a sound S generated from a machine 1 or oscillation thereof, a wavelet converter 16 producing a conversion data Yij, and a processor 20 for detecting abnormality of the machine based on the conversion data. The processor 20 comprises means for operating the features of conversion data, means for comparing the operated value with a preset reference value, and means for delivering an alarm A when the operated value exceeds a predetermined relationship with respect to the reference value.


Inventors:
Ikeda, Masahiro
Inushima, Hiroshi
Application Number:
JP2417295A
Publication Date:
January 28, 2002
Filing Date:
February 13, 1995
Export Citation:
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Assignee:
MITSUBISHI ELECTRIC CORP
International Classes:
G01M99/00; G01H17/00; G01M17/007; (IPC1-7): G01M19/00; G01H17/00; G01M17/007
Attorney, Agent or Firm:
曾我 道照 (外6名)