Vehicle communication system

Abstract

The invention relates to a vehicle communication system comprising: a diagnosis port for providing diagnosis for functional units in a vehicle; at least one Ethernet node used for realizing Ethernetcommunication between the functional units in the vehicle; at least one electronic control unit usedfor controlling the functional units in the vehicle; a wireless communication unit used for realizing wireless communication between the vehicle communication system and an external system; a switch respectively connected with the Ethernet nodes and used for realizing information interaction among the Ethernet nodes; and a central gateway used for forming communication coupling with the diagnosis port, the at least one Ethernet node, at least one electronic control unit, the wireless communication unit and the switch for implementing the protocol conversion between the Ethernet communication and the CAN / CAN FD protocol communication in the vehicle. A vehicle-mounted gateway with a simple structure, a low implementation cost and a high integration level can be provided, and then the vehicle communication system with high reliability and a better application prospect can be provided.

Description

technical field [0001] The present invention relates to the technical field of automobile communication, and more specifically, relates to an automobile communication system. Background technique [0002] With the development of various advanced technologies in the automotive field, more and more intelligent functions are integrated into the car. Various countries and major companies may develop their own custom communication protocols, or may turn to more standard communication protocols, such as controller area network CAN, low-cost serial communication network local interconnection network LIN, FlexRay, MOST, etc., various technologies The application of the application will inevitably produce conversion problems between various protocols. [0003] According to statistics, an average family car today contains 30 ECUs (Electronic Control Units). With the new concepts of smart cars and Internet cars, the number of controllers and the amount of data transmitted on the bus ...

AI Technical Summary

Problems solved by technology

The most direct way to ensure the security of the automotive communication network is physical isolation, such as connecting the OBD interface to the gateway to physically block the OBD from snooping on the vehicle network. For wireless access, a dual-chip physical isolation solution can be used to separate the firewall and The gateway is implemented separately, but it also complicates the system structure and the coordination between each unit, and the implementation cost is high

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