Crossing train approaching real-time pre-warning system and method based on distributed optical fibers

Abstract

The invention discloses a crossing train approaching real-time pre-warning system and method based on distributed optical fibers. The crossing train approaching real-time pre-warning system comprises distributed optical fiber detection systems, a monitoring platform data center, a management terminal, a crossing terminal, an existing railway communication optical cable and multiple warned crossing installation crossing terminals. Each distributed optical fiber detection system comprises Rayleigh or Brillouin scattering distributed optical fiber vibration and strain sensors, a detection instrument and a mode recognition unit. The distributed optical fiber vibration and strain sensors are laid in the whole rail length direction, and the positions and strain and vibration signals in the advancing process of all trains are given by Rayleigh or Brillouin scattering signals in the distributed optical fiber vibration and strain sensors in the distributed optical fiber detection systems and are treated through signals of the mode recognition units, the lengths, the train positions, the real-time running speeds and the train ascending and descending direction information of all the trains on a rail covered by the optical fiber detection systems are obtained, and the approaching states of the trains at the warmed crossings distributed along the line of the rail are monitored and protected in real time.

Description

technical field [0001] The invention relates to a railway safety system, in particular to a railway crossing train approach early warning system, in particular to a real-time early warning system and method based on distributed optical fiber crossing train approach. Background technique [0002] Railway is the main artery of my country's national economy, and railway transportation plays a pivotal role in social and economic development. At the same time, road traffic is developing rapidly, and the number of motor vehicles driving through level crossings where roads and railways intersect continues to increase. Completely eliminate, especially in urban hub areas, the contradiction between roads and railways is still prominent, and the existence of crossings poses a threat to railway transportation and the safety of people's lives and property. Therefore, to ensure the safety of railway transportation, it is particularly important to rely on technological innovation and use ...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the redundancy of existing crossing monitoring equipment, the use of point-to-point early warning, the need for on-site power supply, the inability to display train information in real time, and the inability to provide suitable railing (door) closing timing for crossing operators, and provide A near-real-time early warning system and method for crossing trains based on distributed optical fiber

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