公开(公告)号：US10401432B2

公开(公告)日：2019-09-03

申请号：US15336423

申请日：2016-10-27

Applicant: NATIONAL CHUNG SHAN INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Yu-Shan Lin ,  Jun-Liang Zhu ,  Tung-Jung Hsu ,  Chao-Tse Hong

IPC: G01R31/327 ,  G01D5/14 ,  G01V7/00 ,  H01H19/14 ,  G01P15/18 ,  H01H9/16

Abstract: A rotary switch state detection device includes a magnetic field generating unit, a gravity sensing unit, a magnetic force sensing unit and a processing unit. The magnetic field generating unit generates a magnetic field. The magnetic force sensing unit and the gravity sensing unit are disposed at a rotary switch to detect a gravity value and a magnetic force value of the magnetic field and generate a gravity strength signal and magnetic field strength signal, respectively. The processing unit is connected to the gravity sensing unit and the magnetic force sensing unit to calculate a gravity value variation and a magnetic force value variation and thereby precisely locate a rotation head of the rotary switch upon completion of rotation thereof.