Track section occupation condition monitoring system and method

Abstract

The invention discloses a track section occupation condition monitoring system and method. The track section occupation condition monitoring system comprises a plurality of gravimeter shaft devices which are installed at ports of a section, a counter and a first judgment unit; when vehicle wheels pass through the gravimeter shaft devices, the gravimeter shaft devices output signals expressing passing of the vehicle wheels; the counter receives the signals expressing passing of the vehicle wheels from the gravimeter shaft devices and accordingly counts the vehicle wheels passing the gravimeter shaft devices; if the number of the vehicle wheels entering the section is equal to that of the vehicle wheels leaving from the section, the first judgment unit judges the section is in an idle state and judges the section in an occupation state if not. The track section occupation condition monitoring system has the advantages of being low in cost, high in reliability, wide in applicability, easy to construct, beneficial to maintenance, not easy to be influenced by weather and environment and the like.

Description

technical field [0001] The present invention relates to railway systems, in particular, to a track section occupancy status monitoring system and a track section occupancy status monitoring method. Background technique [0002] Typically, when a track section is occupied by a vehicle, the track relay needs to be dropped to implement the "fail-oriented safety principle". Poor track circuit shunting refers to the fact that the track surface of the track circuit cannot be normally dropped when the vehicle occupies the track section due to the influence of bad conductors, resulting in the failure of the signal interlock. This can lead to incorrect instructions from the railway's control / dispatch system, such as making trains receive and dispatching trains or shunting trains in occupied sections, which is very dangerous and may even cause serious crashes. Therefore, confirming the occupancy status of track sections is directly related to the safe operation of the railway system....

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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