Fault detection systems, methods and vehicles
By combining high-side and low-side driving circuits and voltage sampling circuits, and using a preset truth table and voltage threshold to verify the detection results, the problem of poor accuracy in load fault detection is solved, and efficient and accurate fault detection is achieved.
CN117930799BActive Publication Date: 2026-06-30CHINA FAW CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHINA FAW CO LTD
- Filing Date
- 2023-12-21
- Publication Date
- 2026-06-30
Smart Images
Figure CN117930799B_ABST
Abstract
This invention discloses a fault detection system, method, and vehicle. The system includes: a high-side / low-side drive circuit, the input of which is connected to the output of a controller, and the output of which is connected to a load. This circuit controls the load's operation based on an enable signal output by the controller, detects whether a fault has occurred in the load, and outputs the detection result. A voltage sampling circuit, connected to the high-side / low-side drive circuit, converts the sampling signal output by the high-side / low-side drive circuit into a sampling voltage. The input of the controller is connected to the voltage sampling circuit, and the controller verifies the detection result output by the high-side / low-side drive circuit based on the sampling voltage and the operating state of the high-side / low-side drive circuit. This invention solves the technical problem of poor accuracy in fault detection of loads on vehicles in related technologies.
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