Track section occupancy monitoring system and method

Abstract

The invention discloses a track section occupation status monitoring system and method. The system may include: a plurality of gravimetric axle counters installed at all ports of the section, when the wheels pass by the gravimetric axle counters, the gravimetric axle counters output signals representing the passage of the wheels; A signal representing the passage of wheels, thereby counting the wheels passing through the gravimetric axle counter; and a first judging unit, if the number of wheels entering the section is equal to the number of wheels leaving the section, then judging the section is idle; otherwise, it is judged that the section is occupied. The track section occupancy status monitoring system disclosed by the invention has the advantages of low cost, high reliability, wide applicability, easy construction and maintenance, and is not easily affected by the weather environment.

Description

technical field [0001] The present invention relates to a railway system, in particular to a system for monitoring the occupancy status of a track section and a method for monitoring the occupancy status of a track section. Background technique [0002] Usually, when a track section is occupied by a car, the track relay needs to be dropped to implement the "fail-oriented safety principle". Poor track circuit shunting means that the track circuit track surface is affected by bad conductors, etc., so that the track relay that controls the track section cannot fall normally when the vehicle occupies the track section, resulting in signal interlock failure. This can cause the control / dispatching system of the railway to issue wrong instructions, such as making trains receive and dispatch trains or shunting trains in sections occupied by cars, which is very dangerous and may even cause serious crashes. Therefore, confirming the occupancy status of track sections is directly rela...

AI Technical Summary

Problems solved by technology

[0005] (2) The 3V mode, that is, to realize the electric code in the AC electrification section. The track and turnout section of the station adopts double choke double-rail phase-sensitive track circuits. Possible problems in this way include track relays, protective boxes and track circuits. Mismatching, increasing the power supply makes it difficult for the existing power supply screen to meet the requirements, reducing the signal short circuit of the locomotive to half, etc.;

[0006] (3) High-voltage pulse mode, that is, to improve the existing high-voltage asymmetric track circuit to obtain a high-voltage pulse track circuit. This method is not suitable for UM71, and problems such as "flashing red light band" will appear during operation.

[0007] In addition, the above three methods all require a major modification of the existing track circuit, and its device cost and construction cost are very high

In addition to the above three technologies, some railway units also try to apply metal spraying technology and cladding technology to the surface of rails to reduce the adverse accidents of shunting, but the actual effect is not satisfactory

[0008] In addition, basically all the technologies currently used to improve the poor shunt use the electrical connection between the wheels and the track to determine whether the corresponding track section is occupied when the vehicle passes, and the result is easily affected by the traction current of the locomotive.

Moreover, due to phenomena such as track snow and rust, an insulating layer can be formed on the track surface, which will greatly affect the accuracy of judgment

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