Vehicle-mounted fault diagnosis system and method for hybrid electric vehicle based on CANopen

A hybrid electric vehicle and fault diagnosis system technology, applied in the direction of electrical testing/monitoring, etc., to achieve the effects of increasing the scope of use, diagnosing communication specifications, and facilitating installation and operation

Inactive Publication Date: 2010-12-22
BEIJING UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is in order to solve the deficiency of existing hybrid electric vehicle diagnosis technology, has proposed a kind of realization method of the vehicle fault diagnosis system of hybrid electric vehicle based on CANopen

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  • Vehicle-mounted fault diagnosis system and method for hybrid electric vehicle based on CANopen
  • Vehicle-mounted fault diagnosis system and method for hybrid electric vehicle based on CANopen
  • Vehicle-mounted fault diagnosis system and method for hybrid electric vehicle based on CANopen

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Embodiment 1

[0032] Such as figure 1As shown, a hybrid electric vehicle needs the coordinated work of components such as motor, engine, central instrument monitoring, vehicle controller and battery, and each component is connected to the CAN bus, but CAN itself is not a complete protocol, it only includes For the physical layer and the data link layer, high-level protocols must be further developed for efficient communication. CANopen is an application layer communication protocol developed on the basis of CAN2.0. It is a public, open and general protocol. It is concise, transparent, easy to develop, and configurable. It is easy to expand to form specific network applications. Based on these characteristics, the on-board fault diagnosis system of hybrid electric vehicle adopts CANopen communication protocol. Each control system in the hybrid electric vehicle, as a node of the CANopen network, exchanges data through the CAN bus. As one of the nodes, the on-board fault diagnosis system com...

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Abstract

The invention discloses vehicle-mounted fault diagnosis system and method for a hybrid electric vehicle based on CANopen, belonging to the field of vehicle fault diagnosis. The vehicle-mounted fault diagnosis system for the hybrid electric vehicle based on CANopen comprises a fault diagnosis interface, an information acquisition module, a storage module, a liquid crystal display module, an audio alarm module, a touch screen and keyboard module, a main control module and a power source module. When a fault occurs, the diagnosis system as a CANopen master station utilizes an emergency message to trigger a SDO (Service Data Object) to read the fault diagnosis information of an object dictionary item corresponding to the fault, analyzes the fault information and stores the fault information in a fault information management unit; meanwhile, the fault information is displayed in a fault diagnosis interface. The invention completes the real-time acquisition and display of the fault information and vehicle real-time data and the effective management of the fault information.

Description

technical field [0001] The present invention relates to a CANopen-based vehicle-mounted fault diagnosis system and diagnostic method for hybrid electric vehicles. Using the CANopen high-level protocol as the hybrid electric vehicle bus protocol, the CANopen fault diagnosis communication specification for hybrid electric vehicles is formulated and applied to the diagnostic system Among them, it belongs to the field of on-board fault diagnosis of hybrid electric vehicles. Background technique [0002] With the development of the modern automobile industry, the degree of automobile electronics is increasing day by day, and the number of automobile electronic control systems (fuel injection system, brake explosion-proof system, safety airbag, etc.) , motors and other equipment, the technical content is relatively high, and the structure is more complicated. These complex systems make car maintenance difficult. In order to facilitate maintenance and monitoring, the controller o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B23/02
Inventor 余春暄张明杰赵伟
Owner BEIJING UNIV OF TECH
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