METHOD AND APPARATUS FOR EXTRACTING SIGNAL, PROGRAM, AND RECORDING MEDIUM

PROBLEM TO BE SOLVED: To provide a signal extraction method capable of quickly, objectively judging data. SOLUTION: An inspection pig 1 utilizing a leakage flux method is allowed to travel inside a tubular body 5 for obtaining data to investigate internal/external corrosion in the tubular body 5 and...

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Bibliographic Details
Main Authors SUYAMA KIICHI, MASUKO TOKUSHIGE
Format Patent
LanguageEnglish
Published 07.10.2004
Edition7
Subjects
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
PHYSICS
TESTING
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Summary:PROBLEM TO BE SOLVED: To provide a signal extraction method capable of quickly, objectively judging data. SOLUTION: An inspection pig 1 utilizing a leakage flux method is allowed to travel inside a tubular body 5 for obtaining data to investigate internal/external corrosion in the tubular body 5 and an increase in metal thickness. The obtained data are transferred to an arithmetic processing unit for extracting event data having a region from the obtained data. The extracted event data are compared with past corrosion data recorded to a database by using a pattern matching technique for extracting event data whose similarity exceeds a setting value. COPYRIGHT: (C)2005,JPO&NCIPI
Bibliography:Application Number: JP20030071895