Chinese text analysis and OBD data processing-based vehicle fault diagnosis method

Abstract

The invention discloses a Chinese text analysis and OBD data processing-based vehicle fault diagnosis method. The method comprises the steps of obtaining vehicle fault condition text information dataand ODB data; establishing a vehicle fault condition text data feature set; marking and storing abnormal data in the ODB data; processing the vehicle fault condition text data feature set by adoptingan improved SimHash algorithm to form a corresponding signature set; and performing similarity matching on the signature set and a vehicle repair case library model to obtain optimal fault informationand fault processing scheme. According to the method, a large amount of manual processing time is saved, data processing of experiment is realized, and a diagnosis result is more accurate by combining professional OBD data with repair case experiment; and in addition, a user can master vehicle running data and fault codes at any time, thereby realizing effective vehicle fault detection.

Description

technical field [0001] The invention belongs to the technical field of automobile fault diagnosis, and in particular relates to an automobile fault diagnosis method based on Chinese text analysis and OBD data processing. Background technique [0002] Automobile fault diagnosis technology refers to the automotive application technology to determine the technical and working conditions of the car, and to find out the cause and location of the fault through professional equipment and car characterization without dismantling and dismantling the whole car. [0003] A car is a complex technical system composed of many assemblies, mechanisms and components in an orderly manner. Therefore, it has become an important content of automobile practical technology and fault diagnosis technology to study the mechanism and change law of automobile faults, regularly or even real-time on-line inspection of automobile performance, so as to timely and accurately diagnose the fault location and ...

AI Technical Summary

Problems solved by technology

[0008] However, this traditional fault diagnosis needs to meet many conditions and has certain limitations:

[0010] (2) Expensive equipment testing instruments;

[0011] (3) Maintenance needs to be carried out at a specific location;

[0012] (4) Vehicle failure cannot be warned in advance, and the failure can only be discovered when it has already occurred or has a result that affects driving behavior;

[0013] (5) Fault diagnosis can only be done during regular maintenance;

[0014] (6) The maintenance behavior is not completely transparent, and car owners generally cannot understand the real cause of car failures

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