VIBRATION DETECTION DEVICE

To reduce temporal change in detection accuracy of vibration detection devices.SOLUTION: A sensor probe 2 for detecting vibration of a measurement target object S comprises a contact 4 configured to be brought into contact with the measurement target object S to receive vibration of the measurement target object S, and first and second piezoelectric elements 25a, 25b for converting the vibration of the contact 4 into electrical signals. The contact 4 comprises a main body 41, a roller body 42 to be brought into contact with the measurement target object S, and a holder 43 designed to support the roller body 42 rotatably with respect to the main body 41.SELECTED DRAWING: Figure 3 【課題】振動検出装置の検出精度の経時変化を低減する。【解決手段】測定対象部Ｓの振動を検出するセンサプローブ２は、測定対象部Ｓに接触し、測定対象物Ｓの振動が伝わる接触子４と、接触子４の振動を電気信号に変換する第１圧電素子２５ａ及び第２圧電素子２５ｂとを備え、接触子４は、本体４１と、測定対象物Ｓと接触する転動体４２と、転動体４２を本体４１に対して転動可能に支持するホルダ４３とを有する。【選択図】図３