Event pre-warning and classifying method by external safety pre-warning and positioning system of photoelectric composite cables

Abstract

The invention provides an event pre-warning and classifying method by an external safety pre-warning and positioning system of photoelectric composite cables, which comprises the following steps: obtaining event signals occurred within the range monitored by the system obtained through the continuous acquisition performed by the external safety pre-warning and positioning system of the photoelectric composite cables through high-speed data acquisition card; and performing pre-warning and classification of invasion events on the acquired event signals by using a loose coupling wavelet radial basis neural network algorithm described in the following text. The event pre-warning and classifying method by the external safety pre-warning and positioning system of the photoelectric composite cables provides a practical basis for the event occurrence position calculation and pre-warning so that the external safety pre-warning and positioning system of the photoelectric composite cables can conveniently detect the occurrence of warning events for the convenience that monitoring staffs can arrive at the occurrence positions of the events in time and perform corresponding protection and maintenance on the photoelectric composite cables; besides, the method saves the investigation time of event precaution and provides time allowance for the precautionary measures of the events.

Description

technical field [0001] The invention belongs to the field of optoelectronics and information technology, and in particular relates to an event warning and classification method for an external safety warning and positioning system of a photoelectric composite cable. Background technique [0002] Optical cables and photoelectric composite cables are currently widely used in the optical communication industry and the power industry as an information transmission medium. The operation safety of optical cables and photoelectric composite cables is related to social stability and the protection of national economic interests. Therefore, real-time online early warning and location monitoring of external infringement events during the operation of optical cables and photoelectric composite cables is the key to ensuring their safe operation. [0003] The damage detection of traditional optical cables and photoelectric composite cables is mainly carried out by optical time domain ref...

AI Technical Summary

Problems solved by technology

[0003] The damage detection of traditional optical cables and photoelectric composite cables is mainly carried out by optical time domain reflectometer (OTDR). This technology can only be effective when the optical fiber cable has been damaged by the infringement event and the optical fiber in the optical cable is broken, and it cannot realize the damage detection. Real-time online detection of events, and the location accuracy of breakpoints will decrease with the increase of optical cable length

Another monitoring method is to use fiber grating and other sensor devices with stress and strain sensitive characteristics to detect the safety of the optical cable. This method must add fiber grating devices to the optical cable, thus destroying the transmission characteristics of the optical cable itself. Therefore, these methods are Online application cannot be realized on existing communication optical cables or photoelectric composite cables

[0004] The existing traditional online monitoring system for optical cables is to alarm after the incident. At this time, the damage caused by the incident has already been formed, and the role of the emergency mechanism can only be the recovery of communication; if data theft occurs, there is currently no technical ability to , or even call the police afterwards

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