Communication method of C1 wireless transmission unit and main control unit

Abstract

The invention discloses a communication method of a C1 wireless transmission unit and a main control unit, the C1 wireless transmission unit and the main control unit interact through an MVB bus, ports of the MVB bus comprise a command port and a plurality of data ports, and the communication method comprises the following steps: reading access data corresponding to a related transponder; the C1 wireless transmission unit divides each complete message in the access data according to the definition of the MVB bus port and fills the divided complete messages into a sending cache region queue ofthe data port; the C1 wireless transmission unit reads data from the sending cache region queue and writes the data into a corresponding data port, and access data of the data port is updated; the main control unit reads the data from the data port and stores the data into a receiving cache queue of the data port; and taking out the data in the receiving cache queues of the plurality of data ports, and splicing the data into a complete message to finish data receiving. According to the invention, the interaction efficiency of the C1 wireless transmission unit and the main control unit is improved.

Description

technical field [0001] The invention belongs to the field of train communication, in particular to a communication method between a C1 wireless transmission unit and a main control unit. Background technique [0002] In 2004, the former Ministry of Railways issued the "General Principles of CTCS Technical Specifications (Provisional)", which specified the framework structure of the China Train Operation Control System (CTCS) technical system, and determined a total of 5 levels of my country's railway train control system 0-4. Among them, the normal speed railway train control system mainly adopts the CTCS-0 train control system, the 200km / h high-speed passenger dedicated line adopts the CTCS-2 train control system, and the 300km / h high-speed passenger dedicated line adopts the CTCS-3 train control system ( CTCS-2 train control system as a backup system). In the CTCS system with 5 levels of train control system, there is still a lack of complete CTCS-1 level. [0003] The C...

AI Technical Summary

Problems solved by technology

This one-way broadcast transmission method makes the ground equipment unable to provide accurate routing data for each vehicle point-to-point like the two-way communication. The ground equipment can only send all possible routing data to all vehicles within the wireless coverage area. The on-board equipment selects the corresponding route data according to the ground transponders it passes

The amount of route data received by the C1 wireless transmission unit is very large, and it cannot be transmitted to the main control unit through the MVB bus in a relatively short time

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