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Vehicle electronics high-resistance fault detection and isolation

An electronic device, high-resistance technology, applied in the direction of vehicle components, impedance measurement, electrical connection testing, etc., can solve the problem of isolating specific components, modules or even subsystems.

Active Publication Date: 2020-05-29
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the complexity of vehicle electronics, it can be difficult to isolate the specific component, module or even subsystem causing the high resistance fault

Method used

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  • Vehicle electronics high-resistance fault detection and isolation
  • Vehicle electronics high-resistance fault detection and isolation
  • Vehicle electronics high-resistance fault detection and isolation

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Embodiment Construction

[0030] Vehicle electronics high resistance fault diagnosis systems and methods provided herein are capable of detecting and isolating high resistance faults in vehicle electronics of a vehicle. In at least some embodiments, the method generally includes obtaining electrical data (e.g., voltage data, current data) about one or more portions of the vehicle electronics, determining a plurality of resistor groups (each corresponding to a portion of the vehicle electronics) ), evaluating a resistance group by comparing the determined resistance to a resistance set threshold, and identifying high resistance group candidates based on the evaluation. Thus, if it is determined that the resistance of a resistor set has exceeded the (associated) resistance set threshold, at least one electrical component of the resistor set may be determined to be the cause of (or at least contributed to) the high resistance fault.

[0031] In one embodiment, a single electrical component (eg, a wire con...

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Abstract

The invention provides vehicle electronics high-resistance fault detection and isolation. A vehicle electronics high-resistance fault diagnosis system is provided, as well as a method of detecting andisolating a high-resistance fault in vehicle electronics of a vehicle. The method includes the steps of determining electrical data for one or more portions of the vehicle electronics, wherein the electrical data includes voltage data and / or current data concerning the one or more portions of the vehicle electronics; calculating a resistance for a plurality of resistance sets of the vehicle electronics based on the electrical data, wherein each of the plurality of resistance sets includes one or more electrical components; obtaining a resistance set threshold for each of the plurality of resistance sets of the vehicle electronics; for each of the plurality of resistance sets, evaluating whether the resistance of the resistance set exceeds the resistance set threshold; and based on the evaluating step, identifying one or more high-resistance fault candidates.

Description

technical field [0001] The present invention relates generally to detecting faults in electronic systems, and in particular to detecting and isolating high resistance faults in vehicle electronic systems. Background technique [0002] A vehicle includes various electronic control units (ECUs) that perform various tasks for the vehicle. For example, many automobiles include starter circuits that can be used to start the internal combustion engine. Also, many automobiles include an electronic power steering (EPS) module that facilitates turning (or otherwise steering) the wheels of the vehicle. The EPS and starter circuits are typically connected to a vehicle battery that is used to provide power to various vehicle components. Electrical components of vehicle electronics can wear out and fail, resulting in a high resistance fault, which is a condition where the resistance of a circuit (or portion thereof) is higher than a threshold resistance value for the circuit (or portio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R27/16G01R31/56
CPCG01R27/16B60L3/0069B60L3/0084G08B21/182G08B25/00B60L3/0023G01R31/54G01R31/007G01R31/3842G01R31/66
Inventor X·杜林玟樵张一璐
Owner GM GLOBAL TECH OPERATIONS LLC