Train communication network topology structure based on Ethernet

Abstract

The invention provides a train communication network topology structure based on Ethernet, which comprises an Ethernet backbone network and an Ethernet marshalling network, wherein the Ethernet backbone network comprises a backbone network switch arranged in a dividing unit; the Ethernet marshalling network comprises a marshalling network switch arranged in each compartment; the marshalling network switches in the compartments in the dividing unit are mutually connected to form a ring network; a first central control unit in the dividing unit is connected with any marshalling network switch inthe dividing unit; the backbone network switch in the dividing unit is connected with any marshalling network switch in the dividing unit; and a subsystem device contained in each compartment is connected with the marshalling network switch also arranged in the compartment. The train adopts an ECN / ETB network, the control data and the passenger entertainment information data can share the Gigabitbandwidth, multi-network integration of control and entertainment can be realized, and the train wiring, equipment cost and equipment occupancy space can be greatly reduced.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to an Ethernet-based train communication network topology. Background technique [0002] At present, most train network control systems adopt the Train Communication Network (TCN) bus structure, and the train level adopts the Wire Train Bus (WTB) to realize cross-unit and cross-group train-level communication. Reconnection data transmission function. The vehicle level adopts the Multifunction Vehicle Bus (MVB) bus to realize the internal communication and control of the vehicle. figure 1 As shown, in the current TCN bus scheme, the communication network is divided into two levels: train level and vehicle level. The whole train is divided into two units, and every 4 cars is a unit. The train level uses WTB bus communication with a communication rate of 1.0Mbps. Each unit is equipped with two WTB gateways (GateWay, referred to as GW) as WTB bus nodes. Communication across mar...

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Problems solved by technology

[0008] The present invention provides an Ethernet-based train communication network topology to solve the technical problem of the low communication rate of the train control system in the prior art

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