A Network Architecture of Automotive Electronic System

Abstract

An automotive electronic system network architecture, which includes multiple functional domain controllers with built-in Ethernet and CAN network information exchange gateways, domain controller interaction processors and subnet monitoring processors, and the Ethernet interfaces of multiple functional domain controllers through A single unshielded twisted pair is connected, and the CAN bus interface of each functional domain controller is connected with the local controllers of multiple automotive electronic devices through the CAN bus. The invention realizes the information sharing of larger data volume, and can meet the requirements of the rapid development of automobile electronic equipment. In addition, the present invention overcomes the defect that the traditional vehicle-mounted bus system adopts an independent gateway structure, and each functional system can still run safely after the main communication network of the vehicle is interrupted, thus effectively avoiding the risk of vehicle paralysis.

Description

technical field [0001] The invention relates to an on-vehicle bus system for solving automobile control and communication, and belongs to the technical field of automobiles. Background technique [0002] At present, the vehicle bus system uses CAN, LIN hybrid network, or FlexRey, CAN, LIN, MOST hybrid network. The communication capability of this network is relatively low and the reliability of some networks is poor, which is difficult to meet the needs of automotive electronic equipment. Rapidly evolving requirements. For example, the network rate of the CAN bus is generally up to 500kbit / s, the network rate of the LIN bus is only 19.2kbit / s, the MOST bus is only used in fields without safety requirements such as in-vehicle entertainment systems, and the cost of the FlexRey bus is high but the transmission rate is only It is 10Mbit / s. In addition, the existing complex in-vehicle network system generally adopts an independent gateway structure. Once the gateway fails, the ...

AI Technical Summary

Problems solved by technology

[0002] At present, the vehicle bus system uses CAN, LIN hybrid network, or FlexRey, CAN, LIN, MOST hybrid network. The communication capability of this network is relatively low and the reliability of some networks is poor, which is difficult to meet the needs of automotive electronic equipment. Rapidly evolving requirements

For example, the network rate of the CAN bus is generally up to 500kbit / s, the network rate of the LIN bus is only 19.2kbit / s, the MOST bus is only used in fields without safety requirements such as in-vehicle entertainment systems, and the cost of the FlexRey bus is high but the transmission rate is only 10Mbit / s

In addition, the existing complex vehicle network system generally adopts an independent gateway structure. Once the gateway fails, the network communication of the whole vehicle will be interrupted, which will lead to the paralysis of the vehicle, and this risk will increase with the improvement of the vehicle configuration level.

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