A Topology Structure of Vehicle Communication Network

Abstract

The invention discloses an automobile communication network topology, comprising a gateway, a first CAN module, a second CAN module and an LIN module, which are communicated with the gateway, wherein the first CAN module comprises a first CAN bus, a second CAN bus, two first ECU units and a plurality of second ECU units; the first ECU units are communicated with the first CAN bus and the second CAN bus; the second ECU unit is communicated with the first CAN bus or the second CAN bus; the first CAN bus and the second CAN bus are located in different network segments; the second CAN module comprises l CAN buses and a plurality of third ECU units which are communicated with each other via the CAN buses. Two first ECU units of the first CAN module can be used for simultaneously processing information of two CAN buses to reduce information content of a gateway route and information content which is received by each network segment from the gateway route in a communication network so as to improve usage rate and reliability of communication when a communication load of each network segment is limited. In addition, the cross-segment communication of the first ECU unit enables information transmission more efficient and timely.

Description

technical field [0001] The invention relates to the field of hybrid electric vehicle control, in particular to a vehicle communication network topology. Background technique [0002] With the rapid development of science and technology, cars are playing an increasingly important role in people's lives. At the same time, people have put forward higher requirements for various performances of cars. In order to meet people's various needs, cars are gradually becoming intelligent, and various intelligent controllers are also emerging in an endless stream. In this way, the control system of the whole vehicle is bound to become more complicated, and the amount of data to be processed is also greatly increased. [0003] At present, the data communication of the whole vehicle is often realized by the CAN bus, but in the prior art, the bandwidth limitation of the CAN bus will lead to the need to limit the load within a certain range during data communication. However, in the case o...

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Problems solved by technology

In this way, the control system of the whole vehicle is bound to become more complex, and the amount of data that needs to be processed is also greatly increased.

[0003] At present, the data communication of the whole vehicle is often implemented by the CAN bus, but in the prior art, the bandwidth limitation of the CAN bus will lead to the need to limit the load within a certain range during data communication

However, in the case of a complex vehicle control system, a large amount of data needs to be transmitted, which will inevitably increase the load

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