Vehicle instrument fault detection system and fault detection method thereof

Abstract

The invention relates to a vehicle instrument fault detection system and a fault detection method thereof. The vehicle instrument fault detection system comprises a vehicle instrument and a detectiontool, wherein the vehicle instrument comprises a core board, a first CAN chip, a plurality of instrument warning lights and an instrument warning light hard line interface; and the detection tool includes a single-chip microcomputer and a second CAN chip. In the vehicle instrument fault detection system, the single-chip microcomputer sends a detection signal to a target instrument warning light, the detection tool receives a response signal corresponding to the target instrument warning light through the second CAN chip, and the single-chip microcomputer determines the detection result of thetarget instrument warning light according to the receiving condition of the response signal to quickly and accurately detect whether the target instrument warning light has a fault. The fault detection method solves the problem that in the traditional vehicle instrument fault detection method, when a hard-line-controlled instrument warning light is detected, it is required to manually detect a plurality of instrument warning lights, which is inefficient and likely to generate errors, achieves the automatic detection of the instrument warning lights of the vehicle instrument, and improves the detection efficiency and reliability of the vehicle instrument fault detection system.

Description

Technical field [0001] The invention relates to the technical field of vehicle-mounted systems, in particular to a vehicle-mounted instrument fault detection system and a detection method thereof. Background technique [0002] With the development of automotive technology and the continuous progress of microprocessor technology, embedded systems have been widely used in automotive electronics technology. [0003] For vehicle-mounted embedded systems, such as meters and multimedia systems, when the production line or testing department uses traditional methods to detect the fault of the hard-wired warning lights, it is necessary to manually find the corresponding light line, connect the effective level, and then observe the meter display Whether the warning light corresponding to the screen is lit. Because there are too many warning lights, it is easy to miss, especially in mass production, low efficiency, eye fatigue, and error-prone. Summary of the invention [0004] In view of t...

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Problems solved by technology

[0004] Aiming at the technical problems existing in the prior art, the present invention provides a vehicle-mounted instrument fault detection system and a fault detection method thereof, which solves the problem that manual operation is required to detect multiple Instrument warning lights, low efficiency and error-prone problems, realize automatic detection of vehicle instrument warning lights, improve the detection efficiency and reliability of vehicle instrument fault detection system

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