Automobile intelligent fault diagnosis and maintenance assistance method and system

Abstract

The invention provides an automobile intelligent fault diagnosis and maintenance auxiliary method and system combining subjective and objective information and a cloud model. The method comprises steps of acquiring automobile objective original diagnosis data through an OBD diagnosis port; carrying out preprocessing on the data, judging whether fault codes are in the preprocessed data, and if yes, analyzing the fault codes and providing automobile maintenance assistance; if no, carrying out quantitative conversion on acquired automobile subjective uncertainty fault sign qualitative value through a cloud model method, and comparing the qualitative value with a standard value in an automobile system standard database, wherein the system automatically diagnoses automobile fault parts initially; diagnosing the automobile fault reason through a case-based reasoning method based on a normal cloud mode; and using the rule-based reasoning to finish diagnosis and elimination of automobile faults. According to the invention, automobile faults caused by a complex condition that an automobile has a fault without a fault code or by damage of non-electronic elements are solved; automobile fault diagnosis can be highly efficiently and rapidly finished; maintenance steps are normalized; and maintenance price is properly set.

Description

technical field [0001] The invention relates to the field of automobile fault diagnosis and maintenance, in particular to an auxiliary method and system for automobile intelligent fault diagnosis and maintenance. Background technique [0002] Automobile fault diagnosis and maintenance technology refers to determining the working condition of the automobile by observing the symptoms of automobile faults and using instruments and equipment without dismantling the whole vehicle, finding out the cause and location of the fault, and using corresponding maintenance methods and tools to eliminate the fault of the automobile. . Due to the ever-changing new technologies of automobiles and the increasingly complex electronic control systems of automobiles, the frequency of automobile failures is getting higher and higher, and the reasons for automobile failures are becoming more and more complicated. When a car breaks down, 70% of the time it takes to find out why the car broke down,...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to quickly find out the cause of the failure of the automobile, and solve the problem that the general automobile fault diagnosis equipment cannot be used to deal with the real fault of the automobile without fault codes and the failure of the automobile caused by damage to non-electronic components. Maintenance personnel provide testing and diagnosis steps and reasonably formulate maintenance prices, shorten the time for vehicle fault diagnosis and maintenance, and improve the quality of vehicle maintenance services

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