Fault diagnosis system for automobiles

Abstract

The invention discloses a fault diagnosis system for automobiles. An electronic control unit is connected with a controller area network (CAN)-universal serial bus (USB) conversion card through an automobile CAN bus, the CAN-USB conversion card is connected with an intelligent device through a USB-on-the-go (OTG) data line, the intelligent device reads fault codes and judges whether remote diagnosis is requested, the intelligent device sends the fault codes to a remote fault diagnosis server through a wireless network if the remote diagnosis is requested, the remote fault diagnosis server receives the fault codes, obtains fault information and solutions corresponding to the fault codes and sends the fault information and the solutions to the intelligent device through the wireless network, and the intelligent device obtains the fault information and the solutions corresponding to the fault codes if the remote diagnosis is not request. The fault diagnosis system timely guides users to maintain the automobiles and reduces costs, labor power and material resources of the users, so that the users need not purchase vehicle diagnosis devices, the pollution of a large number of electronic products on environments is avoided with the popularization of intelligent devices, and green and environment-friendly ideas are achieved.

Description

technical field [0001] The invention relates to a fault diagnosis system, in particular to a fault diagnosis system for automobiles. Background technique [0002] In recent years, with the rapid development of automobile control technology, network technology and communication technology, in order to facilitate the driver's driving operation and ensure the safe driving of the car, the operation of each part of the car is becoming more and more integrated. Install the information communication service on the car, it can provide vehicle location information service, vehicle theft and accident detection, long-distance vehicle diagnosis, emergency rescue, traffic information service, mobile office and e-mail service using wireless Internet and other functions. [0003] With the gradual advancement of automobile technology, the faults of automobiles are also diversified. Therefore, automobile fault detection technology and fault diagnosis technology are also developing day by day...

AI Technical Summary

Problems solved by technology

[0005] Although the electronic control unit provides fault codes, the on-site personnel cannot obtain detailed fault information and countermeasures in time to repair the car; even small faults need to be repaired at the repair point, which increases the user's cost, manpower and material resources

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