ABNORMALITY DETECTION DEVICE, ABNORMALITY DETECTION METHOD, AND ABNORMALITY DETECTION PROGRAM

PROBLEM TO BE SOLVED: To detect the state change of a structure more efficiently and accurately.SOLUTION: An abnormality detection device comprises: an abnormality threshold value storage unit storing an abnormality threshold value used for evaluating whether a measurement value output from a sensor...

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Bibliographic Details
Main Authors WAKAMATSU SANAE, YOKOGAWA MASATOSHI, KUWATA SHUHEI, INABA YOKO, NAKAGAWA KEIICHIRO
Format Patent
LanguageEnglish
Japanese
Published 03.03.2016
Subjects
MEASURING
PHYSICS
TESTING
TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES
TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR
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Summary:PROBLEM TO BE SOLVED: To detect the state change of a structure more efficiently and accurately.SOLUTION: An abnormality detection device comprises: an abnormality threshold value storage unit storing an abnormality threshold value used for evaluating whether a measurement value output from a sensor installed in a structure is abnormal or not; and a correlation coefficient threshold value storage unit storing the threshold value of a correlation coefficient used for regarding a plurality of measurement values output from a plurality of sensors are correlated. The abnormality detection device receives the measurement values output from the plurality of sensors, compares the received measurement values with the abnormality threshold value, determines whether the measurement values are abnormal or not; if it determines the measurement values are abnormal, it calculates the correlation coefficient of measurement values output from sensors constituting the combination per combination of the plurality of sensors, detects a combination of sensors outputting measurement values exceeding the threshold value of the correlation coefficient; and if it does not detect any combination of measurement values exceeding the threshold value regarding the correlation coefficient, it determines that abnormality has occurred at only a sensor outputting a measurement value determined to be abnormal.SELECTED DRAWING: Figure 1 【課題】構造物の状態変化を、より効率良く的確に把握する。【解決手段】構造物に設置されたセンサから出力される測定値が異常であるか否かを示す異常閾値が記憶されている異常閾値記憶部と、複数のセンサから出力される複数の測定値に相関があるとみなす相関係数の閾値が記憶されている相関係数閾値記憶部と、を備えた異常検出装置が、複数のセンサから出力される測定値を受信し、受信した測定値と異常閾値とを比較して、当該測定値が異常であるか否かを判定し、測定値が異常であると判定した場合、複数のセンサの組み合わせ毎に、当該組み合わせのセンサから出力された測定値の相関係数を算出し、相関係数の閾値を超える測定値を出力したセンサの組み合わせを検出し、相関係数が閾値を超える測定値の組み合わせを検出しなかった場合、異常であると判定された測定値を出力したセンサにおいてのみ異常が発生したと判定する。【選択図】図１
Bibliography:Application Number: JP20150211858