A Star Communication Network System for Electric Smart Vehicles Based on Vehicle Ethernet

Abstract

The invention relates to a vehicle Ethernet based electric smart automobile star-shaped communication network system. The system includes an intelligent decision and control unit (11) formed for connecting a plurality of controllers in a loop through Ethernet and used for integral control of vehicle electric devices; star-shaped vehicle electric equipment communication units including a plurality of the vehicle electric devices and an external Ethernet exchange. The vehicle electric devices are connected to the external Ethernet exchange. The external Ethernet exchange is connected to one controller in the intelligent decision and control unit (11). The star-shaped vehicle electric equipment communication units are plural and the number of the star-shaped vehicle electric equipment communication units is smaller than that of the controllers. Each star-shaped vehicle electric equipment communication unit is connected to one controller in the intelligent decision and control unit (11) in a one-to-one corresponding manner. The controllers that are not used for connecting with the star-shaped vehicle electric equipment communication units are redundancy controllers. Compared with the prior art, the system provided by the invention has advantages of simple communication, high stability and good extendibility and the like.

Description

technical field [0001] The invention relates to a communication network system for an electric intelligent vehicle, in particular to a star communication network system for an electric intelligent vehicle based on a vehicle Ethernet. Background technique [0002] Car manufacturers initially only used Ethernet for on-board diagnostics. With the popularization of automotive electronic products, the number of safety, entertainment and auxiliary electronic devices in the car is increasing, and the interconnection requirements between devices are becoming more and more complex. Ethernet Network technology has found its place in advanced driver assistance systems and infotainment platforms. As a backbone network, Ethernet can give full play to its advantages to meet the requirements for large-traffic data communication. In the traditional vehicle control system, a separate controller is assigned to each vehicle electronic device. In order to realize the mutual communication betwee...

AI Technical Summary

Problems solved by technology

In the traditional vehicle control system, a separate controller is assigned to each vehicle electronic device. In order to realize the mutual communication between each vehicle electronic device, a communication network needs to be designed between every two controllers. The communication network of this method is complicated, and at the same time, the scalability of this method is poor. Once completed, it is difficult to expand, which does not meet the development needs.

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