Multiple unit train communication network topology framework based on Ethernet

Abstract

The invention provides a multiple unit train communication network topology framework based on Ethernet. A multiple unit train adopts a form of 8-carriage consist, and the 8-carriage consist is divided into two traction units. The multiple unit train communication network topology framework is characterized in that train dynamic configuration between the two traction units is realized by adoptingEthernet Train Backbone (ETB), wherein the ETB is provided with four Ethernet Train Backbone nodes (ETBNs); in each of the traction units, two Ethernet repeaters (EREPs) are connected in series between the corresponding two ETBNs; Ethernet Consist Network (ECN) inside the traction units is provided with Ethernet Consist Network nodes (ECNNs); the ECNNs in each of the traction units are connected in series and then connected to the corresponding ETBNs; and in each carriage, the corresponding single ECNN is used as the center to be connected with subsystem equipment. The whole train adopts the multiple unit train communication network topology framework based on Ethernet, thereby reducing the network load rate, and simplifying the network communication design. Meanwhile, the safety and reliability of a train network are ensured through redundancy design.

Description

technical field [0001] The invention belongs to the technical field of EMU train network communication, and in particular relates to an Ethernet-based EMU train communication network topology architecture. Background technique [0002] At present, the communication network widely used on EMU trains is the TCN train communication network architecture based on the IEC61375 standard. The train communication network system adopts a two-level bus topology architecture, which is divided into train-level WTB bus and vehicle-level MVB bus, train-level and vehicle-level Level data conversion adopts WTB / MVB gateway. [0003] Such as figure 1 As shown, the EMU train adopts the form of eight formations, and the eight formations are divided into two traction units, the first to fourth carriages are one traction unit, and the fifth to eighth carriages are one traction unit. The train-level WTB bus is adopted across the traction unit, and the train-level WTB bus has dynamic marshalling c...

AI Technical Summary

Problems solved by technology

However, this topology still uses the train-level WTB bus and vehicle-level MVB bus network as the control network, and Ethernet is only used as the maintenance network, which does not fundamentally solve the problem of high network load rate. MVB bus network and Ethernet dual communication capabilities, the complexity of communication board design increases and the cost also increases accordingly

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