US 12,248,013 B2
System-level malfunction indicator in autonomous vehicles
Xiaoling Han, San Diego, CA (US); and Yu-Ju Hsu, Tucson, AZ (US)
Assigned to TUSIMPLE, INC., San Diego, CA (US)
Filed by TUSIMPLE, INC., San Diego, CA (US)
Filed on Jul. 7, 2023, as Appl. No. 18/348,589.
Application 18/348,589 is a continuation of application No. 16/727,829, filed on Dec. 26, 2019, granted, now 11,726,124.
Prior Publication US 2023/0349963 A1, Nov. 2, 2023
Int. Cl. G01R 31/00 (2006.01); B60T 17/22 (2006.01); F01N 11/00 (2006.01); F02M 63/00 (2006.01); G01K 15/00 (2006.01); G01N 33/00 (2006.01); G01P 21/02 (2006.01)
CPC G01R 31/007 (2013.01) [B60T 17/221 (2013.01); F01N 11/00 (2013.01); F02M 63/0015 (2013.01); G01K 15/007 (2013.01); G01N 33/007 (2013.01); G01P 21/02 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A fault diagnostic method, comprising:
receiving an electrical signal from a first component located in a vehicle, wherein the electrical signal includes a transient signal of a voltage signal or a current signal of the electrical signal;
receiving a first message from a second component located in the vehicle, wherein the first message includes an error message; and
determining an operational status of a third component that includes the first component and the second component, wherein the operational status is determined based on the transient signal of the voltage signal or the current signal and based on the error message in the first message,
wherein the operational status of the third component is determined based on a tradeoff between a severity of the error message and a plurality of characteristics of the transient signal of the voltage signal or the current signal, and
wherein the plurality of characteristics of the transient signal includes a number of transients of the transient signal and magnitude of the transient signal.