Ethernet backbone network system for vehicle and method for controlling fail safe of the ethernet backbone network system

摘要

A backbone network system for a vehicle enables high-speed and large-capacity data transmission between integrated control modules mounted in the vehicle, such that communication can be maintained through another alternative communication line when an error occurs in a specific communication line. The backbone network system enables various kinds of integrated control modules mounted in the vehicle to perform large-capacity and high-speed communications, based on Ethernet communication, by connecting domain gateways of the integrated control modules through an Ethernet backbone network, and provides a fast fail-safe function so that domain gateways can perform communications through another communication line when an error occurs in a communication line between the domain gateways.

主权项

1. An Ethernet backbone network system, comprising:
a chassis gateway for communication of a chassis integrated control system; a power train gateway for communication of a power train control unit; a body gateway for communication of a body control module; a multimedia gateway for communication for a multimedia system; a first Ethernet communication link for connecting the chassis gateway and the power train gateway to communicate with each other; a second Ethernet communication link for connecting the chassis gateway and the body gateway to communicate with each other; a third Ethernet communication link for connecting the body gateway and the multimedia gateway to communicate to each other; a fourth Ethernet communication link for connecting the multimedia gateway and the power train gateway to communicate with each other; a fifth Ethernet communication link for connecting the chassis gateway and the multimedia gateway to communicate with each other; and a sixth Ethernet communication link for connecting the power train gateway and the body gateway to communicate with each other, wherein, after an error occurs in a communication link among the first through sixth Ethernet communication links, a gateway among the chassis gateway, the power train gateway, the body gateway and the multimedia gateway transmits a proposal message for setting up a new communication link through all possible communication paths, and another gateway among the chassis gateway, the power train gateway, the body gateway and the multimedia gateway receives the proposal message, calculates an opportunity cost, and transmits an agreement message though a path with a lowest opportunity cost.