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Vehicle fault diagnosis method, device and system

A vehicle fault and diagnosis method technology, applied in the field of devices and systems, and vehicle fault diagnosis methods, can solve problems such as high bandwidth and network stability, failure to realize fault diagnosis, etc., to reduce data storage costs, avoid data loss, The effect of reducing dependence

Inactive Publication Date: 2020-01-07
上海仁童电子科技有限公司
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Problems solved by technology

However, this fault diagnosis method requires real-time communication between the on-board part and the cloud computing center, which requires high bandwidth and network stability. When the network is interrupted or the bandwidth is insufficient, accurate fault diagnosis cannot be achieved.

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  • Vehicle fault diagnosis method, device and system
  • Vehicle fault diagnosis method, device and system
  • Vehicle fault diagnosis method, device and system

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Embodiment Construction

[0088] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0089] The inventor found through research on the existing vehicle fault diagnosis system based on cloud computing that the on-board part can collect real-time parameter information of the vehicle and transmit it to the cloud computing center through the wireless network. The cloud center establishes a fault analysis model through statistics to optimize vehicle maintenance. protection strategy. Among them, the vehicle-mounted part is mostly acquisition and com...

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Abstract

The invention provides a vehicle fault diagnosis method, device and system. A vehicle-mounted server receives original data transmitted by a data collection system and carries out preprocessing on theoriginal data to obtain effective sample data; the effective sample data are inputted into a vehicle state detection model to carry out state detection; when a detection result shows that the vehicleis in a health state, health state data are stored into a data buffer area and a data storage area respectively; when a detection result shows that the vehicle is in an abnormal state, the effectivesample data are inputted into a plurality of fault classification models respectively to carry out fault identification to obtain a fault identification result of each fault classification model; andthe fault state data are stored into a fault data storage area. According to the invention, the real-time offline fault diagnosis of the vehicle is realized and the dependence of the fault diagnosis on the network is reduced.

Description

technical field [0001] The present invention relates to the technical field of vehicle failure early warning and health management (Prognostic and Health Management, PHM), and more specifically, relates to a vehicle failure diagnosis method, device and system. Background technique [0002] With the development of the automobile industry, modern electronic control technology has penetrated into various components of the automobile, the structure of the vehicle has become more and more complex, and the degree of automation has become higher and higher. Among them, the fault diagnosis function is one of the technical fields of vehicle safety. important function. [0003] On a car with an OBD (On-Board Diagnostics, on-board self-diagnostics) interface, an on-board diagnostic instrument or a handheld diagnostic instrument can be connected to the car through the OBD interface, scan the vehicle system, and obtain the fault code information of each component. However, for the sake ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B23/02
CPCG05B23/0213G05B2219/24065
Inventor 易国锴
Owner 上海仁童电子科技有限公司
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