Sensor system with fault diagnosis function

Abstract

The invention provides a sensor system with a fault diagnosis function. The sensor system comprises a combination instrument assembly, a sensor assembly, a vehicle-mounted diagnosis instrument and a TBOX; a diagnosis circuit is arranged in the combination instrument assembly, and the diagnosis circuit is used for monitoring the line connection state of the sensor assembly in real time; and the combination instrument assembly is configured to broadcast fault information diagnosed based on a monitoring signal of the diagnosis circuit to the TBOX and the vehicle-mounted diagnosis instrument through a whole vehicle CAN line. The fault information of the sensor system can be quickly and accurately diagnosed, the maintenance cost of a user is reduced, and the maintenance efficiency and the maintenance accuracy are improved.

Description

technical field [0001] The invention relates to the technical field of fault diagnosis, in particular to a sensor system with fault diagnosis function. Background technique [0002] When the after-sales feedback is inaccurate or faulty on the speedometer, fuel gauge, and air pressure gauge of the combination instrument, the after-sales usually solves the problem for a short time by replacing the combination instrument assembly, odometer sensor, fuel sensor assembly, and air pressure sensor assembly. Sexually resolved, the failure recurred shortly after. After the above-mentioned faulty parts are returned to the original factory, the fault of a single component cannot be reproduced, and the root cause of the fault cannot be identified, and the misjudgment rate reaches 80%. [0003] The existing sensor system failure problem is relatively complicated, especially because there are many lines and connection points in the whole vehicle, which makes it difficult and time-consumin...

AI Technical Summary

Problems solved by technology

After the above-mentioned faulty parts are returned to the original factory, the fault of a single component cannot be reproduced, and the root cause of the fault cannot be identified, and the misjudgment rate reaches 80%.

[0003] The existing sensor system failure problem is relatively complicated, especially because there are many lines and connection points in the whole vehicle, it is difficult and time-consuming to troubleshoot the wiring harness of the sensor system

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