METHOD FOR DETECTING CHANGES IN TURNOUT ADHESION DEGREE AND TURNOUT ADHESION DEGREE MONITORING DEVICE

To provide a new technology that can constantly monitor a turnout and detect changes in adhesion force.SOLUTION: A turnout adhesion degree monitoring device 1 is provided with: a data acquisition unit 202 that acquires acoustic data for each conversion operation of an electric switch machine that converts a turnout from one adhesion state to the other adhesion state between a stationary side adhesion state in which a tongue rail is adhered to a basic rail on a stationary side and an antipodal side adhesion state in which the tongue rail is adhered to the basic rail on the antipodal side; an acoustic value calculation unit 204 that calculates, based on the acoustic data, a separation period acoustic value indicating magnitude of a sound during a separation period to separate one contact state and a contact period acoustic value indicating the magnitude of the sound during the contact period to bring the turnout into the other contact state; and an adhesion degree detection unit 206 that detects a change in an adhesion degree of the tongue rail adhering to the basic rail based on the separation period acoustic value and the contact period acoustic value.SELECTED DRAWING: Figure 5 【課題】分岐器を常時監視して密着力の変化を検出できる新たな技術を提供すること。【解決手段】分岐器密着度合監視装置１は、定位側においてトングレールを基本レールに密着させる定位側密着状態と、反位側においてトングレールを基本レールに密着させる反位側密着状態とのうちの一方の密着状態から他方の密着状態へと分岐器を転換させる電気転てつ機の転換動作毎の音響データを取得するデータ取得部２０２と、音響データに基づいて、一方の密着状態を離間させる離間期の音響の大きさを示す離間期音響値と、他方の密着状態にさせる密着期の音響の大きさを示す密着期音響値とを算出する音響値算出部２０４と、離間期音響値および密着期音響値に基づいて、トングレールが基本レールに密着する密着度合に変化が生じたことを検出する密着度合検出部２０６とを備える。【選択図】図５