Train communication network switching device and system based on Ethernet

Abstract

The invention discloses a train communication network switching device based on the Ethernet. The train communication network switching device comprises an RS485 interface module, an M12 network interface module, a switching module, a CPU module and an SPI module, wherein the RS484 interface module is used for providing an interface for a device, with an RS485 interface, on a train, the M12 network interface module is used for providing a network interface for a train-mounted device of the train, the switching module is used for carrying out data information transmission and switching on data information received through the RS485 interface module and the M12 network interface module through a VLAN, the CPU module is used for configuring a register of the switching module to enable the switching module to achieve a tree generation protocol, the VLAN, flow control and a data priority, and the SPI module is used for providing register control channels for the CPU module and the switching module. By means of the train communication network switching device, the real-time performance of information data transmission and switching in a train communication network can be guaranteed.

Description

technical field [0001] The invention relates to the field of train communication, in particular to an Ethernet-based train communication network switching device and system. Background technique [0002] With the increase of train speed, the structure of the train is becoming more and more complex, and higher requirements are put forward for the safe, reliable and efficient operation of the train. The modern high-speed EMU adopts the power distribution mode, and the train traction, braking and other equipment are scattered in the EMU. On each vehicle in the group, its control method is very different from the traditional locomotive towing passenger car mode. Train communication network is used in train control and monitoring, including all aspects of train fault diagnosis and passenger information system. New services are constantly being applied, such as video surveillance, network diagnosis, passenger information security, image recognition, video query and wireless Ethern...

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