CTCS2-grade train controlling system based on wireless locomotive signal

Abstract

A CTCS2-class train control system based on wireless locomotive signals is a pint-to-point system for transmitting the train control information via passive responder, regional rail circuit and wireless channel. It is composed of the locomotive carried equipment consisting of ATP device and wireless signaling device, and the ground equipment consisting of wireless signaling device, responder, rail circuit ZPW2000, interface for computer or electric centralizing linkage 6502, and interface for train scheduling and command system or scheduling centralizing system (TDCS or CTC).

Description

Technical field: [0001] The invention relates to a CTCS level 2 train control system, in particular to a CTCS level 2 train control system based on wireless locomotive signals. The invention belongs to the technical field of railway signals. Background technique: [0002] At present, the technical level of my country's railway train operation control can not meet the needs of high-speed and high-density transportation, and the key technologies and integration methods of high-speed passenger train operation control can only rely on imports. In order to meet the needs of train speed increase and operation safety, my country has formulated the "China Train Control System CTCS Development Plan". The development plan refers to the European train control system ETCS and combines the current situation and future development needs of China's train control system, and divides China's train control system into five levels: CTCS0-CTCS4. In the sixth speed increase, the 200Km / h EMU wi...

AI Technical Summary

Problems solved by technology

Among them, adjacent line interference and traction return interference are more obvious, and adjacent line interference leads to locomotive signal upgrades from time to time

[0005] 2. Train control information is transmitted in one direction and cannot be confirmed in a closed loop

The train control information is transmitted from the ground to the on-board equipment through the track circuit or transponder, and the on-board equipment cannot return the information to the ground

Therefore, the ground cannot determine whether the transmitted signal was received by the locomotive signal, or whether the received signal was correct

[0006] 3. There are many disadvantages in the coding of the track circuit in the station

The track circuit in the station cannot realize closed-loop inspection, and the information transmission is unreliable; the side line connection and departure cannot be coded, resulting in discontinuous locomotive signal display, and no signal in the fork area and side line; station interlocking is to meet the requirements of shunting operations and improve efficiency , the division of the track circuit in the station is too short, and the track circuit on the track is very long, and the long and short track circuits make it difficult to encode codes; due to the increase in train speed, the locomotive signal cannot be completely received in places where the track section in the station is short. Group information, causing the locomotive signal to drop codes and flash white lights; the code system in the station is superimposed on the existing system, without system design, the system has problems such as incompatibility, incoordination, and poor anti-interference performance

Therefore, there are often time lags in sending codes, odd changes in code patterns, and frequent code drop phenomena at the junction of the frequency shifting track circuit and the AC counting track circuit, etc.

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