A distributed ring communication network architecture for electric vehicles based on in-vehicle Ethernet

Abstract

The invention relates to vehicle Ethernet based electric automobile distributed annular communication network architecture including two annular local area networks that are in independent communication and having different functions. In said network architecture, a vehicle controller (1) acts as a common node of the annular local area networks. The vehicle controller (1) is provided with a plurality of interfaces. Each interface is corresponding to an annular local area network. Compared with the prior art, synchronous operation of the annular communication networks can be realized. The operation direction of each annular local area network includes a clockwise direction and an anti-clockwise direction, so that communication reliability is guaranteed. A steering control system and a brake control system are both redundant structures, so that reliability and reliability are ensured. Data transmitted in the first annular local area network has byte limitation and redundancy and the data is transmitted in a forward sequence and a reverse sequence in the clockwise direction and the anti-clockwise direction. Whether the transmission process goes wrong or not is judged timely, so that real time performance and reliability are ensured.

Description

technical field [0001] The invention relates to an electric vehicle communication network architecture, in particular to an electric vehicle distributed ring communication network architecture based on the vehicle Ethernet. Background technique [0002] Smart cars are an inevitable trend in the future development of cars, and the design of communication network topology is one of the most important technologies for smart cars. During the operation of the smart car, in order to monitor the running status of the smart car, realize the fault diagnosis of the smart car, and achieve the automatic control of the smart car operation, the relevant monitoring and control equipment in the car will generate a large number of information related to the running status of the smart car, fault diagnosis of the smart car, Data related to smart car operation control commands. The generation and consumption of these data are often located in different on-board devices, so it is necessary to ...

AI Technical Summary

Problems solved by technology

However, this typical method of configuring a ring topology network has the disadvantage that the scalability of the network is reduced since this method is only interested in connecting the nodes as rings

For example, since the number of Ethernet ports of nodes supporting a ring topology network is limited to two, it is difficult to configure networks of various shapes

Also, once a ring topology network is configured, connection to a network other than the corresponding ring topology network is not considered, and it is difficult to integrate and manage previously established several networks into a single network

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