公开(公告)号：US20200158536A1

公开(公告)日：2020-05-21

申请号：US16748491

申请日：2020-01-21

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Takuya TOMIDA ,  Takeshi UEMURA ,  Hideaki FUJIURA ,  Ryo OSABE

IPC: G01D5/14 ,  G01R35/00 ,  G01R33/09 ,  G01R33/07 ,  G01R15/20 ,  B62D15/02 ,  G01B7/30 ,  G01D5/16 ,  G01R33/06 ,  G01D5/12 ,  G01R33/02

Abstract: A magnetic sensor includes a magneto-resistive element configured to output a signal and a detection circuit configured to receive the signal. The detection circuit includes a regulator configured to supply a potential to the magneto-resistive element, a first current path configured to electrically connect the magneto-resistive element to the regulator, a second current path, a switch, and a diagnostic circuit connected to the second current path. The second current path includes, and is configured to electrically connect the magneto-resistive element to the regulator via the resistor. The switch is configured to select one of the first current path and the second current path, and electrically connect the magneto-resistive element to the regulator via the selected one of the first current path and the second current path.