CAN bus communication system

Abstract

The present invention relates to a CAN bus communication system and discloses a bus type topological structure. In the specific technical proposal, the bus type topological structure of vehicle consists of a CAN bus and an LIN bus, and has five network channels which are connected through gateways so as to share the information. The five network channels comprise a high-speed CAN network channel which mainly consists of a power component and a chassis component, a low-speed CAN network channel which mainly consists of a vehicle body control display system and a meter sound display system, and three LIN network channels which mainly consist of a rainfall sensor, an anti-theft speaker, an auxiliary instrument, a left backdoor and a right backdoor. In the network topological structure with a plurality of channels and gateways, the network channels are arranged reasonably; the load rate of the network is controlled within a reasonable range; and the structure enhances the real-time performance of the network communication. Simultaneously, the adoption of the gateway technology realizes the management of the entire network and enhances the reliability of the network, when the information is shared.

Description

technical field [0001] The invention relates to the field of automobile automation, mainly manifested in the aspect of network bus communication. Background technique [0002] Since the bus technology began to be applied to automobiles in the 1980s, it has developed rapidly under the impetus of electronic technology and automobile technology. At present, a variety of automobile bus standards suitable for different occasions have been formed, such as MOST, CAN, TTP, LIN Wait. The communication nodes and data flow in the automobile bus continue to increase, and the nodes are becoming more and more complex, which makes the automobile bus face difficulties in terms of weight, layout, cost, and communication efficiency. The way out of this dilemma lies in the implementation of the network and hierarchical system of the automobile bus. [0003] Controller Area Network (CAN) is the most famous and the earliest automotive bus protocol to become an international standard. The CAN p...

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Problems solved by technology

However, as the key technology of electronic system integration, CAN bus started relatively late in the application of automobile bus technology in my country, and has not been fully researched and widely used at present. The current domestic self-developed network bus is still in the groping stage, especially The technology development combined with specific models and t

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