Train tracking and approaching pre-warning system

Abstract

The invention provides a train tracking and approaching pre-warning system. The security states of trains running in the same line and the same direction are subjected to real-time efficient calculation and estimation by adopting train locating information and safety pre-warning logic according to the advantages of a plurality of information wireless transmission modes. Thus, reasonable, accurate and efficient safety pre-warning is provided for possibly appearing dangerous situations and the potential safety hazard caused by signal system failure in tracking operation of the train. Train locating is achieved by a differential satellite navigation locating receiver in combination with a wheel speed sensor by the train tracking and approaching pre-warning system; the position information of each train is transmitted by a wireless communication network between the train and the ground; the position information of each train comprises train running kilometer post, speed, direction, line number, timestamp and the like; and a ground train position controller is used for carrying out comprehensive detection and processing on the position information of each train in the obtained prefecture, carrying out position judgment logic calculation and dynamic distance calculation of front and back trains, and transmitting the pre-warning information to the back train through the wireless information transmission network when the distance between the front train and the rear train is smaller than each of different levels of safety pre-warning thresholds.

Description

technical field [0001] The invention relates to a train running automatic control system of rail transit, in particular to a train tracking and approaching early warning system during the train running. Background technique [0002] The modern train operation control system can realize train position detection, train-ground wireless communication and train overspeed protection, ensure the safe interval between trains, ensure that trains run on the line at a safe speed, and realize the improvement of railway operation capacity under the premise of ensuring safety. [0003] When the train operation control system fails due to factors such as equipment defects, temporary failures, and human error, it may cause the function of the train overspeed protection system to fail, thereby causing the risk of collisions and accidents during the train tracking operation. The current on-board train control equipment can only obtain its own status, train movement authorization and related l...

AI Technical Summary

Problems solved by technology

[0003] When the train operation control system fails due to factors such as equipment defects, temporary failures, and human error, it may cause the function of the train overspeed protection system to fail, so that there are risks of collisions and accidents during the train tracking operation.

The current on-board train control equipment can only obtain its own status, train movement authorization and related line parameters through the train-ground wireless information transmission network, and cannot obtain the status information of the train ahead of the track.

Once the relevant equipment of the train control system breaks down, fails or makes mistakes, the train driver will not be able to obtain accurate and safe control instructions, so that it will not be possible to ensure that a safe distance is always kept from the preceding train during the tracking operation with the preceding train and completely avoid safety accidents happened

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