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Fiber fence intrusion monitoring system and pattern recognition method thereof

A technology of intrusion monitoring and system mode, applied in the direction of instruments, anti-theft alarms, alarms, etc., can solve problems such as insufficient, achieve the effect of ensuring accuracy, solving false alarm problems, and improving accuracy

Active Publication Date: 2013-08-07
饶云江
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AI Technical Summary

Problems solved by technology

[0003] However, it is not enough to solve the problem of intrusion alarm. Intrusion signals can be divided into harmful signals and harmless signals.

Method used

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  • Fiber fence intrusion monitoring system and pattern recognition method thereof
  • Fiber fence intrusion monitoring system and pattern recognition method thereof
  • Fiber fence intrusion monitoring system and pattern recognition method thereof

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Embodiment Construction

[0042] The present invention will be further described below with reference to the drawings and embodiments. It can be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for ease of description, the drawings only show a part but not all of the content related to the present invention.

[0043] Please refer to figure 1 As shown, figure 1 It is a schematic structural diagram of an optical fiber fence intrusion monitoring system provided by an embodiment of the present invention.

[0044] The optical fiber fence intrusion monitoring system in this embodiment specifically includes: a sensing optical cable 101, a wavelength demodulator 102, and a signal processing terminal device 103.

[0045] The sensing optical cable 101 is laid on the fence, and N fiber Bragg grating (FBG) vibration sensors 104 are connected in series in the sensing optical cable 101 to se...

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Abstract

The invention discloses a fiber fence intrusion monitoring system and a pattern recognition method thereof. A dynamic threshold value parameter is set according to the magnitude of energy of a sampled signal, the sampled signal is segmented in a certain number, and the LC number in which the signal amplitude exceeds the threshold value parameter is counted in each segment, so that an LC distribution characteristic is obtained; and the LC distribution characteristic is calculated and counted to obtain a group of characteristic values, the group of characteristic values are input into a classifier for judgment output, and whether to alarm or not is decided according to an event mode represented by an output result of the classifier. By adopting the fiber fence intrusion monitoring system and the pattern recognition method thereof, the type of an intrusion signal is recognized while the intrusion is detected and positioned, the interference of noise can be well eliminated, the threshold value is automatically adjusted according to the magnitude of signal energy, the accuracy of the extracted characteristic vector is ensured, the recognition accuracy is effectively improved, and the problem of error alarms under the strong interference environments such as wind and rain is well solved.

Description

Technical field [0001] The invention relates to the technical field of perimeter security, in particular to an optical fiber fence intrusion monitoring system and a pattern recognition method thereof. Background technique [0002] Security is the foundation for the survival and development of a society and an enterprise. In recent years, with the development of my country's economy, the comprehensive national strength has become stronger and the people's lives have become more prosperous. Therefore, after solving the housing problem, people are increasingly concerned about the safety of housing. Due to the emergence of some large-scale and expensive building structures, there are certain safety hazards in the perimeter and property safety. For example, the perimeter security of complex environments such as military areas, power plants, airports, oil fields and oil wells and the early warning of important areas are particularly worthy of attention . Not only that, the safety pre...

Claims

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Application Information

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IPC IPC(8): G08B13/00
CPCG08B13/186
Inventor 谢鑫吴慧娟饶云江牛文谦
Owner 饶云江
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