Railway real-time Ethernet TRDP (Train Real-time Data Protocol) gateway based on Linux platform

Abstract

The invention discloses a railway real-time Ethernet TRDP (Train Real-time Data Protocol) gateway based on a Linux platform. The gateway comprises an ARM core board, a UART interface, a CAN interface, an Ethernet transceiver and an Ethernet bus interface. The ARM core board is connected with the UART interface, the CAN interface and the Ethernet transceiver. The Ethernet transceiver and the Ethernet bus interface are connected. The Linux platform is mounted on the ARM core board. The ARM core board is used for realizing data transmission between a vehicular device and a train communication network according to the TRDP. Through adoption of the embodiment of the invention, the TRDP communication data is processed rapidly, thereby satisfying a demand of a train Ethernet for timeliness.

Description

Technical field [0001] The invention relates to the field of computer technology, in particular to a railway real-time Ethernet TRDP gateway based on a Linux platform. Background technique [0002] In the past, the fastest network technology for railways was only a few Mbit / sec. With the monitoring and recording of the conditions of vehicles and equipment, the provision of communication functions such as wireless LAN for customers, the increase in pixels of the surveillance cameras in the car, and the enlargement of the display in the car With the continuous enhancement of functions such as high image quality, the data transmission speed is no longer sufficient. Therefore, as a data transmission technology capable of achieving more than 10 Mbit / sec, Ethernet has become popular. The current international standard for real-time Ethernet train and vehicle bus is IEC61375-2-3, and the new standard will gradually be applied to the field of China's rail transit. [0003] With the develo...

AI Technical Summary

Problems solved by technology

However, if the existing system uses a low-end single-chip microcomputer, the entire system structure including the main single-chip microcomputer needs to be replaced to realize the Ethernet function

In addition, because the MCU chip not only needs to implement the Ethernet function, but also needs to control other functions of the vehicle, the data conversion of the Ethernet takes up a lot of resources of the MCU chip, resulting in increased memory costs, and the soft protocol stack that comes with the MCU chip is real-time Poor performance, unable to meet the real-time requirements of railway Ethernet

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