STATE ESTIMATION DEVICE AND STATE ESTIMATION METHOD

• Main Authors: AZUMA TOMOAKI, YAMASHITA KIMITAKA, YADA YOHEI, YAMADA HIROHISA, KURODA NORIYUKI, OSAWA JUNJI, HAYASE TAKUMI, YASUE TOSHIHIKO
• Format: Patent
• Language: English; Japanese
• Published: 19.07.2024
• Subjects: MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC ORINFRASONIC WAVES; MEASURING; PHYSICS; TESTING; TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES; TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR

To provide a state estimation device and a state estimation method that can properly estimate a state of an inspection target apparatus to be inspected on the basis of a sound generated by the inspection target apparatus.SOLUTION: A state estimation device 10 includes: a first acquiring unit 33 for acquiring first sound recording data and state data at each of a plurality of recording time points from a database server 11 in which the first sound recording data of a sound generated by a sound recording target apparatus and state data indicating a state of the sound recording target apparatus at a recording time point of the sound generated by the sound recording target apparatus are accumulated; an identifying unit 35 for identifying, on the basis of the first sound recording data and the state data at each of the plurality of recording time points, a correspondence relation between a change in the sound generated by the sound recording target apparatus and a change in the state of the sound recording target apparatus; a second acquiring unit 36 for acquiring, for each of the plurality of inspection time points, second sound recording data of the sound generated by an inspection target apparatus at the inspection time points; and an estimating unit 38 for estimating, on the basis of the second sound recording data at each of the plurality of inspection time points and the correspondence relation, a change in a state of the inspection target apparatus.SELECTED DRAWING: Figure 3 【課題】 検査対象機器の発生音に基づいて当該機器の状態を適切に推定できる状態推定装置、及び状態推定方法を提供する。【解決手段】 状態推定装置１０が、録音対象機器の発生音の第１録音データと、録音対象機器の発生音の録音時点における録音対象機器の状態を示す状態データと、が蓄積されたデータベースサーバ１１から、複数の録音時点のそれぞれにおける第１録音データ及び状態データを取得する第１取得部３３と、複数の録音時点のそれぞれにおける第１録音データ及び状態データに基づいて、録音対象機器の発生音の変化と録音対象機器の状態の変化との対応関係を、特定する特定部３５と、検査時点における検査対象機器の発生音の第２録音データを、複数の検査時点のそれぞれについて取得する第２取得部３６と、複数の検査時点のそれぞれにおける第２録音データと、対応関係とに基づいて、検査対象機器の状態の変化を推定する推定部３８と、を備える。【選択図】 図３