System and method for detecting position of locomotive in train

Abstract

The invention discloses a system for detecting the position of a locomotive in a train. The system comprises a signal collection module which is provided with at least two collectors which are installed at the inner side of a steel rail of a train arrival position detection point at intervals, wherein each collector is used for outputting a collection signal containing wheelbase information between front and rear adjacent wheel pairs of the train when the current train passes through the current position; and a locomotive detection module which is used for receiving the collection signal transmitted by each collector, determining the unit axle distance between the front and rear adjacent wheel pairs of the current train based on the collection signal, diagnosing whether each wheel pair and the previous wheel pair belong to the same bogie in real time, acquiring the fixed axle distance of a carriage which is running through the detection point, and according to the fixed axle distance, determining the type of the current carriage by using a preset wheelbase discrimination threshold value of different carriage types, wherein the carriage types include passenger cars, trucks and electric locomotives. According to the method, different types of carriages in the train running at a high speed can be identified in real time, and the position of the locomotive in the train can be detected in real time.

Description

technical field [0001] The invention relates to the field of railway track traffic, in particular to a system and method for detecting 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 grou...

AI Technical Summary

Problems solved by technology

However, these methods are difficult to distinguish between power vehicles (locomotives) and non-power vehicles (trucks or passenger cars) in a running train with complex arrangements, and the application of automatic phase separation systems on the ground is limited.

[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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