Railway foreign matter intrusion security perception and identification system based on distributed optical fiber sensing

Abstract

The invention discloses a railway foreign matter intrusion security perception and identification system based on distributed optical fiber sensing. On the basis of two distributed optical fiber sensing technologies and video linkage technologies, a phase position optical time domain analysis technology is used for monitoring a vibration intrusion signal generated when illegal personnel, vehiclesand construction intrude a high-speed railway, and information, including the position, the event and the like of the intrusion signal, can be given; a Brillouin optical time domain analysis technology is used for monitoring a high-speed railway fence deformation signal generated when large falling rooks and debris flows intrude the high-speed railway, and information, including the position and the like of the intrusion signal, can be given; and when any one or two systems in the above two optical fiber sensing systems give an alarm, cameras arranged on a high-speed railway tower pole are linked, and the monitoring picture of an intrusion event is called. The above three subsystems synchronous work and mutually learn, and layer-by-layer intrusion monitoring is carried out to jointly realize the early warning and the identification of the high-speed railway foreign matter intrusion.

Description

technical field [0001] The invention relates to the field of optical technology, in particular to a safety perception and identification system for railway foreign object intrusion based on distributed optical fiber sensing. Background technique [0002] As a sensor with light as the medium, optical fiber is resistant to electromagnetic interference and can adapt to harsh natural environments; it has low loss and is suitable for long-distance sensing; optical fiber itself is not only a signal transmission channel, but also a sensor. Optical fibers have been widely studied due to their unique advantages such as small size, light weight, immunity to electromagnetic interference, and sensitivity to vibration, temperature, and strain. The distributed optical fiber sensing system uses optical fiber as the sensing medium, and can perform real-time remote monitoring of targets within the length of the optical fiber. The high-speed railway foreign object intrusion safety perception...

AI Technical Summary

Problems solved by technology

[0004] At present, the foreign object intrusion monitoring system for high-speed railways mainly adopts measures such as rigid protective nets, and there is no system for sensing and identifying foreign object intrusion.

Images