公开(公告)号：US20190252135A1

公开(公告)日：2019-08-15

申请号：US16394692

申请日：2019-04-25

Applicant: ABB Schweiz AG

Inventor： David Roby ,  Maciej Orman ,  ShunChong Li ,  Stevan Marinkovic ,  Yannick Maret

IPC: H01H11/00 ,  G01P13/04 ,  G01S17/66 ,  H04L29/08 ,  G08C23/04

CPC classification number: H01H11/0062 ,  G01P13/04 ,  G01S17/66 ,  G08C23/04 ,  H01H2001/0021 ,  H01H2071/044 ,  H04L67/12

Abstract: System and method for monitoring a travel curve of moving part of circuit breaker comprising: device for optically monitoring travel path and comprising: light source; light detection device; optical element having plurality of zones with different optical properties which are alternately arranged, the optical element being provided on moving part of circuit breaker, light being intensity-modulated by the optical element and being received by light detection device during circuit breaker operation. The system further comprises an accelerometer mounted to circuit breaker, control unit for receiving signals from light detection device and from accelerometer, the control unit being configured to determine the travel curve based on the detected modulated light and on the detected vibration signal, the vibration signal being employed to identify a change of direction of movement of the moving part.