Car body control module with CAN diagnosis

A body control module and CAN bus technology, applied in the direction of electrical testing/monitoring, etc., to reduce workload, simplify wiring harness, improve efficiency and reliability

Inactive Publication Date: 2008-12-10
LIANCHUANG AUTOMOBILE ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

The disadvantage of this is that it is impossible to avoid the mutual interference of multiple computer system communications, especially in the form of more and more on-board computers, this problem is becoming more and more prominent

Method used

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  • Car body control module with CAN diagnosis
  • Car body control module with CAN diagnosis
  • Car body control module with CAN diagnosis

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Embodiment Construction

[0014] Such as figure 2 Shown, the vehicle body control module BCM with CAN diagnosis of the present invention, it has the CAN line communication diagnosis interface that connects automobile diagnosis port, this interface obtains the error code of each electronic control module ECU by being connected to the CAN bus of automobile, and through diagnosis The port connector sends the error code to the diagnostic instrument Tester, and its LIN bus is connected to the corresponding electronic control module ECU through the car's LIN bus, and other wiring harnesses are respectively connected to the defined electronic control module ECU. The electronic control module ECU refers to the electronic control module in the car, including the air-conditioning module, the window module and the like. The system adopts 12VDC or 24VDC vehicle-level power supply mode. When starting to work, the diagnostic tester sends a start diagnosis command, starts to transmit data and diagnostic information ...

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Abstract

The present invention discloses a car body control module with CAN diagnosis, which is provided with multiple CAN line communication diagnosis interfaces connected with the diagnosis ports of a car, and the interfaces are connected with the CAN bus of the car to acquire the error codes of each electronic module and transmit the error codes to a diagnostic apparatus. Moreover, according to different requirements on the transmission speed rate, the CAN line communication diagnosis interfaces respectively adopt a high-speed CAN, a low-speed CAN and a medium-speed CAN to transmit data and error codes. Because the car body control module utilizes the fault-tolerance property of the CAN bus technology, when a certain unit fails, the operation of the whole system cannot be affected, so the car body control module can improve the reliability and efficiency of the system.

Description

technical field [0001] The invention relates to the field of vehicle body electronic diagnosis, in particular to a vehicle body control module with CAN diagnosis. Background technique [0002] With the increasing proportion of electronic equipment in automobiles, a large number of electronic control and information feedback systems are continuously introduced. The rapid development of automotive electronics has also brought up new issues for after-sales service, maintenance and use of automobiles. In maintenance work, relying solely on the traditional methods of "looking, asking, diagnosing, and cutting" has been unable to effectively diagnose and repair the faults that occur in the use of automobiles, so a new industry: electronic fault diagnosis system for automobiles has developed rapidly. , and formed a market full of business opportunities. [0003] At the same time, with the application of electronic systems in automobiles, correct and rapid fault diagnosis of each s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B23/02
Inventor 罗来军黄东亚吕春林孟永刚
Owner LIANCHUANG AUTOMOBILE ELECTRONICS
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