System and method for judging position of locomotive in train

Abstract

The invention discloses a system for judging a position of a locomotive in a train. The system comprises a train type detection device, an approaching target detection device and a data processing device, wherein the train type detection device is disposed at a rail at a first position, and is used for collecting a first signal when the train passes through a current position; the approaching target detection device is arranged at a second position rail close to the target position and is used for collecting a second signal when the train runs from the first position to the second position; and the data processing device is used for determining the axle distance between the adjacent wheels and the section number position of the to-be-identified locomotive in the train according to the first signal, and then generating an instruction for prompting the to-be-identified locomotive to reach the target position when the first wheel of the to-be-identified locomotive presses the second position according to the second signal and in combination with the section number position. The locomotive position can be directly judged, reliability is high, cost is low, engineering is easy to achieve, redundancy check of locomotive arrival instructions is achieved, and the system is suitable for various ground passing over phase-splitter devices.

Description

technical field [0001] The invention relates to the field of railway rail transit, in particular to a system and method for judging the position of a locomotive in a train. Background technique [0002] The electrified railway catenary adopts single-phase power frequency AC power supply mode. In order to reduce the voltage imbalance of the three-phase power supply network of the power system and improve the utilization rate of the power grid, the electrified railway adopts segmented and phase-separated power supply, that is, two power supplies with different voltage phases A section of non-electric neutral zone is embedded between the arms, and the transition between each powered arm and the neutral zone is smooth through anchor segment joints. In the operation of electrified railways, in order to reduce the adverse effects of the catenary electrical phase separation area, most of them use automatic phase separation on the vehicle or automatic phase separation on the ground....

AI Technical Summary

Problems solved by technology

Among them, the axle counting detection method is the most widely used and the most mature, but this method cannot distinguish whether each car in the train is a locomotive or a freight car

Since the ground automatic over-phase separation device needs to consider various train marshalling methods, in the end, the length of the neutral zone becomes longer, sometimes exceeding 1000m, which is not conducive to the troubleshooting and maintenance of the over-phase separation device

In addition, the infrared beam and catenary detection methods can theoretically directly detect the position of the locomotive (that is, the position of the pantograph), but due to the constraints of the weather environment, driver operation, and line operation conditions, engineering cannot meet the reliability requirements. No use report yet

[0005] In addition, there are other ways to detect the position of the train locomotive in the existing ground automatic phase separation device as follows: First, using the axle counting sensor to realize the train position identification, it is difficult to distinguish the locomotive from the trailer, and it is easy to cause the axle counting sensor to have wrong codes. The ground automatic phase separation device cannot accurately identify the position of the train and other issues; secondly, the reader is installed on the electric locomotive, and the reader is connected to the on-board phase separation equipment. When the electric locomotive passes through the commutation point, the reader is connected to the electronic tag wirelessly Communication, to know the position of the train locomotive, but due to the specific position settings of the reader and the electronic tag, the vehicle-mounted over-phase equipment is only applicable to the vehicle scene, and cannot be applied to the ground automatic over-phase system set in the neutral zone; third, use The open-hole sensor used to detect the catenary current is installed on the catenary at the monitoring point, that is, the catenary passes through the sensor, and when the train passes by, the secondary side of the sensor induces a current, thereby Drive the optical fiber launch head to output the train position information, but this method has no mature detection equipment, which is easily interfered by the meeting of the upper and lower trains, so that the train position cannot be accurately identified; Set up three anchor section joints, detect whether the locomotive current is present or not through the current transformers installed on the two neutral sections, and judge the actual position of the neutral section where the locomotive is located, as the basis for the automatic over-phase circuit breaker opening and closing operation, but this In this way, before the commutation operation control switch is closed, the position of the locomotive cannot be detected through this scheme, so it needs to cooperate with other detections, and this scheme needs to transform the existing catenary into three anchor joints, which requires a large amount of engineering

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