公开(公告)号：US10571521B2

公开(公告)日：2020-02-25

申请号：US15992782

申请日：2018-05-30

Applicant: GM Global Technology Operations LLC

Inventor： Dhammika S. Wijesundera ,  Ming Zhao ,  Joshua McDonough ,  Junghyun Kim

IPC: G01R31/327 ,  G01R31/00

Abstract: A method for detecting a failure mode in an electronic selector having a button coupled to a first switch, a second switch, and a third switch, the method includes incrementing a button activation counter once for each button activation event and incrementing a first switch-closed counter, a second switch-closed counter, and a third switch-closed counter once for each button activation event if the respective switch is closed at any time during the button activation event. The method further includes incrementing a first switch-opened counter, a second switch-opened counter, and a third switch-opened counter once for each button activation event. The method further includes evaluating a fault status of the first switch, the second switch, or the third switch when the button activation counter reaches or exceeds a predetermined threshold; and reporting the fault status of the first switch, the second switch or the third switch.

公开(公告)号：US20190369164A1

公开(公告)日：2019-12-05

申请号：US15992782

申请日：2018-05-30

Applicant: GM Global Technology Operations LLC

Inventor： Dhammika S. Wijesundera ,  Ming Zhao ,  Joshua McDonough ,  Junghyun Kim

IPC: G01R31/327 ,  G01R31/00

Abstract: A method for detecting a failure mode in an electronic selector having a button coupled to a first switch, a second switch, and a third switch, the method includes incrementing a button activation counter once for each button activation event and incrementing a first switch-closed counter, a second switch-closed counter, and a third switch-closed counter once for each button activation event if the respective switch is closed at any time during the button activation event. The method further includes incrementing a first switch-opened counter, a second switch-opened counter, and a third switch-opened counter once for each button activation event. The method further includes evaluating a fault status of the first switch, the second switch, or the third switch when the button activation counter reaches or exceeds a predetermined threshold; and reporting the fault status of the first switch, the second switch or the third switch.