公开(公告)号：US20230227052A1

公开(公告)日：2023-07-20

申请号：US18186390

申请日：2023-03-20

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Zixian WU ,  Shuaifei LI ,  Yongyou ZHOU

IPC: B60W50/02 ,  B60W40/105

CPC classification number: B60W50/0205 ,  B60W40/105 ,  B60W2554/20 ,  B60W2554/80

Abstract: A fault diagnosis method and a fault diagnosis apparatus for a vehicle speed measurement apparatus. The method includes: obtaining a first vehicle speed measured by the speed measurement apparatus; obtaining reference information of a static reference object at N moments, where N is an integer greater than 1, and the reference information includes information about a location relationship of the static reference object relative to a vehicle in which the speed measurement apparatus is located at each of the N moments; calculating a second vehicle speed based on the reference information; and determining, based on the first vehicle speed and the second vehicle speed, whether the speed measurement apparatus is faulty.