Train approach warning system and method based on wireless distance measurement technique

Abstract

The invention provides a train approach warning system based on a wireless distance measurement technique. The train approach warning system comprises vehicle-mounted approach warning equipment installed on a train, a first distance measurement antenna installed on one side of the train, a second distance measurement antenna installed on the other side of the train, and a rail side approach warning terminal installed in a construction area. The vehicle-mounted approach warning equipment is connected with the first distance measurement antenna and the second distance measurement antenna. The first distance measurement antenna and the second distance measurement antenna are connected with the rail side approach warning terminal through wireless signals. The invention further provides a train approach warning method based on the wireless distance measurement technique. The train approach warning system and method have the beneficial effects that accurate distance measurement and positioning functions are achieved, and the system and method are suitable for complex traveling and construction environments of a marshalling station and the like, especially construction safety management of rail traffic such as subways and tunnels where the GPS positioning technique cannot be used.

Description

technical field [0001] The invention relates to a train approach warning system, in particular to a train approach warning system and method based on wireless ranging technology. Background technique [0002] With the rapid development of my country's railway construction, the number of rail transit kilometers including urban rail and subway has increased dramatically. At the same time, with the development of electrification and informatization of rail transit, a large number of electromechanical equipment is installed on both sides of the track, which brings a lot of construction, inspection, maintenance and repair operations. When construction work is carried out on the side of the track, if the construction personnel or the train driver are negligent and do not notice the passing train, accidents may occur where the train collides with the construction personnel, equipment or vehicles, resulting in personal and property losses. The operating efficiency of modern railway...

AI Technical Summary

Problems solved by technology

The limitation of this system is that the alarm distance and direction cannot be controlled, and it will cause many false alarms in marshalling yards and other stations

[0006] 2. The GPS positioning technology is used to realize the train approaching alarm. This method has been widely used at present, but its limitation is that it cannot work in environments such as subways or railway tunnels.

[0007] 3. It is realized by using ultrasonic wave, pressure wave and other technologies, but they are all limited to experiments at present, and the practicability is very poor

[0008] In the marshalling yard of the railway, there are a large number of traction locomotives and engineering vehicles, and a large number of engineering vehicles are also used in the trackside operations of subway and other rail transit. The characteristics of these scenes are that the speed is low, but the vehicles come and go frequently. The scope and distance of the alarm will cause the construction work in the safe area to stop due to the approach of the train and avoid it, which greatly affects the operation efficiency. The construction work within 5 meters to the left and right of the track in the direction of the train will issue a proximity alarm, thereby ensuring that the progress of the engineering train will not interfere with the construction in the safe area

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