公开(公告)号：US20220222981A1

公开(公告)日：2022-07-14

申请号：US17148643

申请日：2021-01-14

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Xinyu DU ,  Zhongyu YANG ,  Joshua J. SANCHEZ ,  Kevin M. CORR ,  Yilu ZHANG ,  Mateusz M. NOWAK

IPC: G07C5/08

Abstract: A controller processes data from one or more sensors of a subsystem of a vehicle. The processing includes smoothing the data and calculating a mean of the data. The controller identifies a transition point in the processed data where a moving average of the data is less than the mean by a predetermined amount indicating a trend. The controller selects a segment of the processed data subsequent to the transition point, detects the trend in the segment using regression, and extrapolates the detected trend to reach a predetermined fault threshold. The controller predicts a failure of the subsystem based on a slope of the extrapolated trend and provides an indication of the prediction based on the slope to schedule a service for the subsystem.