CAN (Controller Area Network) bus system and fault diagnosis method thereof

A CAN bus, fault technology, applied in the direction of bus network, data exchange through path configuration, circuit or fluid pipeline, etc., can solve the problem of wasting driver's time, achieve the effect of solving fault problems and convenient and fast fault diagnosis

Active Publication Date: 2012-09-19
BEIQI FOTON MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] After the communication problem between the controllers is solved, the resulting fault diagnosis and detection has become the biggest problem. The existing maintenance and diagnosis de

Method used

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  • CAN (Controller Area Network) bus system and fault diagnosis method thereof
  • CAN (Controller Area Network) bus system and fault diagnosis method thereof
  • CAN (Controller Area Network) bus system and fault diagnosis method thereof

Examples

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[0028] The specific embodiments of the present invention will be described in further detail below in conjunction with the drawings and embodiments. The following examples are used to illustrate the present invention, but not to limit the scope of the present invention.

[0029] figure 1 Is a schematic structural diagram of a CAN bus system according to an embodiment of the present invention; figure 1 Said CAN bus system includes at least one functional control system and meter 6 connected to the CAN bus;

[0030] The at least one function control system is further configured to actively send the currently occurring fault message, that is, the DM1 message, to the CAN bus when a fault occurs;

[0031] The meter 6 is further configured to receive a fault message currently occurring from the CAN bus, analyze the fault message currently occurring and display fault related information.

[0032] The at least one function control system is further configured to send a DM1 message every 1 sec...

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Abstract

The invention relates to a CAN (Controller Area Network) bus system and a fault diagnosis method thereof, and discloses a controller area network CAN bus system. The CAN bus system comprises at least one function control system and an instrument (6) which are connected to a CAN bus, wherein the at least one function control system is further used for actively transmitting a DM1 message of a fault which occurs at present to the CAN bus when the fault occurs; and the instrument (6) is further used for receiving the DM1 message from the CAN bus, analyzing the DM1 message and displaying fault related information. According to the CAN bus system and the fault diagnosis method thereof, the time of acquiring a diagnostic fault code can be saved, the problem of fault can be timely solved, and convenient and fast fault diagnosis is realized.

Description

technical field [0001] The present invention relates to the technical field of CAN (Controller Area Network, Controller Area Network) bus and fault diagnosis, in particular to a CAN bus system and a fault diagnosis method thereof. Background technique [0002] In the previous automotive electrical system, there were only simple devices such as switches and actuators, and the on-board communication was realized through point-to-point connections between each device. In order to improve the performance of automobiles, a large number of electronic systems have been introduced, resulting in a rapid increase in wiring harnesses, and a large increase in wiring harnesses has hindered the further improvement of automobile performance. There are many car controllers, but information resources cannot be shared. The overall arrangement space of the wiring harness is reduced, the flexibility is poor, and the manufacturing and difficulty are increased. Does not meet the requirements of...

Claims

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Application Information

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IPC IPC(8): B60R16/023H04L12/40
Inventor 付金勇赵澎徐梅李阳辛春
Owner BEIQI FOTON MOTOR CO LTD
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