Mobile phone short message vehicle failure remote diagnosis detection method and device

Abstract

The invention relates to a mobile phone short message vehicle failure remote diagnosis detection method and device. The method comprises the following steps of: obtaining the operation state code of a vehicle from an electric control system of the vehicle to be detected; judging the vehicle operation conditions including the vehicle failure according to the operation state code; and sending the information capable of reflecting the vehicle operation conditions to a mobile phone in the form of short message. The device comprises a CPU (central processing unit) main circuit, a storage module, a GSM (global system for mobile communication) module and a communication module, wherein the CPU main circuit can decode the vehicle operation state code and control and coordinate the work of other modules; the storage module is connected with the CPU main circuit and used for storing a standard failure code library; the GSM module is in remote communication with the mobile phone terminal; and the communication module is used for communicating with the electric control system of the vehicle. According to the invention, remote vehicle diagnosis can be realized, the vehicle failure diagnosis efficiency and accuracy can be improved, and the specific failure information can be displayed visually.

Description

technical field [0001] The invention relates to a method and device for vehicle fault diagnosis, in particular to an automatic and intelligent vehicle fault remote detection method and tool for vehicle models supporting the OBDII protocol. Background technique [0002] The OBDII agreement is a standard agreement on engine exhaust emissions defined by the International Environmental Protection Organization. Through the OBDII agreement, the exhaust emission status and basic operating conditions of the automobile engine can be obtained. The engines of most vehicles on the market support the OBDII protocol. [0003] The automobile engine system is a typical comprehensive complex system. From the structural point of view, it is an electromechanical system composed of mechanical, electrical, hydraulic and other subsystems, belonging to a multi-layer hierarchical structure; from the perspective of fault characteristics, it often shows The fault symptoms are complex, the cause rela...

AI Technical Summary

Problems solved by technology

This method is not only inefficient and cannot meet the needs of modern production, but also due to the influence of subjective and objective factors, it is often prone to false detection and missed detection, which has a great impact on the quality of the whole machine product, and can no longer meet the modern OBDII model maintenance. The new requirements put forward by the industry and car owners

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