公开(公告)号：US20170160147A1

公开(公告)日：2017-06-08

申请号：US15433158

申请日：2017-02-15

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Yuya GENMEI ,  Jiro INOUE ,  Masayuki ICHIMARU

IPC: G01L1/16 ,  H01L41/04 ,  H01L41/113 ,  H01L41/053 ,  G01B7/16 ,  H01L41/047

CPC classification number: G01L1/162 ,  G01B7/16 ,  G01B7/22 ,  H01L41/042 ,  H01L41/047 ,  H01L41/0533 ,  H01L41/1132

Abstract: A piezoelectric sensor is fixed to a detection object and detects distortion of the detection object includes first and second principal surfaces, and extends in the lengthwise direction. The piezoelectric sensor includes a piezoelectric body whose polarization axis extends in a direction parallel or substantially parallel to the lengthwise direction, and first and second detecting electrodes that are provided on a surface of the piezoelectric body and that extend in a direction parallel or substantially parallel to the lengthwise direction. Distortion of the detection object is detected based on electric output corresponding to shear stress of the piezoelectric body.