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CAN (controller area network) management method for commercial vehicles

A technology of network management and management method, which is applied in the bus network, data exchange network, data exchange through path configuration, etc. Convenience and flexibility

Active Publication Date: 2013-01-16
NANJING NAVECO AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the increase of CAN network nodes in the vehicle, the network stability decreases, which increases the power consumption of the vehicle

Method used

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  • CAN (controller area network) management method for commercial vehicles
  • CAN (controller area network) management method for commercial vehicles
  • CAN (controller area network) management method for commercial vehicles

Examples

Experimental program
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Embodiment 1

[0030] The CAN network management method for commercial vehicles provided in this embodiment adopts the OSEC standard direct network management and indirect network management combined management method, defines the CAN nodes adopting indirect network management as Class A nodes, and adopts direct network management CAN nodes are defined as Class B nodes.

[0031] In the CAN bus communication method, the working status related to network operation and the mutual conversion relationship are stipulated, such as figure 1 As shown, the dotted line in the figure is only applicable to type B nodes.

[0032] Such as figure 1 As shown, the node will transition from the initial network state to the network startup state, and the transition conditions are:

[0033] l Type A node: The ignition key is turned on or a reset command is received.

[0034] l The class B node is powered on again, receives a reset command, turns on with the ignition key, or is active on the CAN bus.

[0035]...

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Abstract

The invention discloses a CAN (controller area network) management method for commercial vehicles. The CAN management method is characterized is that a direct network management manner is combined with an indirect network management manner, CAN nodes utilizing the indirect network management manner are defined as A-type nodes, and CAN nodes utilizing direct network management manner are defined as B-type nodes. The management method for the B-type nodes includes: step I, the B-type nodes are switched into a network start state from an initialized state when wake events occur; step II, a logic loop management network is established to realize communication and network release when the B-type nodes are in an active state; step III, the B-type nodes are subjected to network release and enter a network close state; and step IV, the B-type nodes are switched in a network active state if the wake events occur, and are switched in the initialized state if no wake events occur. By effective network management means, stability of the network is enhanced, electric power consumption of the network is reduced, and the CAN management method is suitable for the commercial vehicles with multiple network nodes.

Description

technical field [0001] The present invention relates to a CAN network management method, more specifically, relates to a CAN network management method applied to commercial vehicles. Background technique [0002] With the rapid development of automobile technology, people have higher and higher requirements for the comfort of the whole vehicle. The number of controllers for each system of the automobile has grown from a few to dozens, and they are distributed in the body system, chassis system, and power system. in each system. In order to solve problems such as information sharing and vehicle wiring harness layout, CAN bus technology has been widely used. With the increase of CAN network nodes in the vehicle, the stability of the network decreases, which increases the power consumption of the vehicle. In order to solve these problems, it is necessary to adopt effective network management methods to enhance network stability and reduce vehicle power consumption. Contents...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/24H04L12/40
Inventor 叶进宋伟夏小华许勇张凌露杨河清
Owner NANJING NAVECO AUTOMOBILE CO LTD
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