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Patent Searching and Data


Title:
PLANT DIAGNOSIS DEVICE, DIAGNOSIS METHOD, AND DIAGNOSIS PROGRAM
Document Type and Number:
WIPO Patent Application WO/2011/125130
Kind Code:
A1
Abstract:
Disclosed is a plant diagnosis device which detects abnormality in the subject being diagnosed from the measurement signal of the plant being diagnosed and reports the abnormality. Specifically disclosed is a plant diagnosis device which is configured of: a state variation detection unit which categorizes and stores the measurement signals of the plant being diagnosed and determines that the state has varied, when the measurement signal does not belong to the categories obtained by the categorization; an abnormality determination unit which determines that abnormality has occurred in the subject being diagnosed, using a signal from the state variation detection unit as a part of inputted signals; an alarm generation means which reports the output from the abnormality determination unit to the outside; and an erroneous report inhibition unit which detects events other than the abnormality in the plant being diagnosed and inhibits the output from the abnormality determination unit.

Inventors:
SEKIAI TAKAAKI (JP)
EGUCHI TORU (JP)
KUSUMI NAOHIRO (JP)
FUKAI MASAYUKI (JP)
SHIMIZU SATORU (JP)
Application Number:
PCT/JP2010/002575
Publication Date:
October 13, 2011
Filing Date:
April 08, 2010
Export Citation:
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Assignee:
HITACHI LTD (JP)
SEKIAI TAKAAKI (JP)
EGUCHI TORU (JP)
KUSUMI NAOHIRO (JP)
FUKAI MASAYUKI (JP)
SHIMIZU SATORU (JP)
International Classes:
G05B23/02
Foreign References:
JP2005165375A2005-06-23
JPH04186119A1992-07-02
JPH10301619A1998-11-13
JP2007233643A2007-09-13
JPH0660280A1994-03-04
JP2007198918A2007-08-09
JPH07334479A1995-12-22
Attorney, Agent or Firm:
POLAIRE I. P. C. (JP)
Polaire Intellectual Property Corporation (JP)
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Claims: