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Title:
WAVEFORM DETECTOR AND STATE MONITORING SYSTEM USING IT
Document Type and Number:
WIPO Patent Application WO/2002/093181
Kind Code:
A1
Abstract:
A waveform detector having a signal processing function for producing an output waveform by detecting, by characterizing, a transient state variation having no periodic repetition or by subjecting an input waveform to 1/f fluctuation conversion, and a state monitoring system utilizing the waveform detector. The waveform detector characterizing the characterization of the sign of state variation, chracterized in that a digital filter operating means of a processing section is provided with a plurality of digital filters, and means (phase matching parameter means) for altering the phase of any of, the elementary pattern of multiplication coefficient pattern defined by the coefficient pattern derived from a nonintegral-n-times integration expression, the input signal data, and the digital filter output is provided, whereby the outputs from the digital filters using the elementary pattern are synthesized under a state where the partial phase of a feature extracting function is varied.

Inventors:
Ageishi, Youichi (Synchro Kabushiki Kaisha 6F Koutsuu Building 15-5, Shinbashi 5-chome Minato-ku Tokyo, 105-0004, JP)
Wada, Tetsuyuki (Synchro Kabushiki Kaisha 6F Koutsuu Building 15-5, Shinbashi 5-chome Minato-ku Tokyo, 105-0004, JP)
Application Number:
PCT/JP2001/004019
Publication Date:
November 21, 2002
Filing Date:
May 15, 2001
Export Citation:
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Assignee:
SYNCHRO CO., LTD. (Koutsuu Building 6F 15-5, Shinbashi 5-chome Minato-ku Tokyo, 105-0005, JP)
Ageishi, Youichi (Synchro Kabushiki Kaisha 6F Koutsuu Building 15-5, Shinbashi 5-chome Minato-ku Tokyo, 105-0004, JP)
Wada, Tetsuyuki (Synchro Kabushiki Kaisha 6F Koutsuu Building 15-5, Shinbashi 5-chome Minato-ku Tokyo, 105-0004, JP)
International Classes:
G01R13/00; G01R23/16; G01R23/167; H03H17/02; H03H17/08; (IPC1-7): G01R13/00; G01R23/16; H03H17/02; H03H17/08
Foreign References:
JPH10260066A
Other References:
MASAHIRO ANKYU ET AL.: '1/f Yuragi gensho no tekiouteki seigyo system e no ouyou' SYSTEM SEIGYO JOHO GAKKAI vol. 41, no. 6, 15 June 1997, pages 201 - 207, XP002942915
Attorney, Agent or Firm:
Nagase, Shigeki (Oguro-bild 2-4-2, Sarugaku-cho Chiyoda-ku Tokyo, 101-0064, JP)
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