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9 November 2010 Perimeter security alarm system based on fiber Bragg grating
Cui Zhang, Lixin Wang
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Proceedings Volume 7853, Advanced Sensor Systems and Applications IV; 78531M (2010) https://doi.org/10.1117/12.868594
Event: Photonics Asia 2010, 2010, Beijing, China
Abstract
With the development of the society and economy and the improvement of living standards, people need more and more pressing security. Perimeter security alarm system is widely regarded as the first line of defense. A highly sensitive Fiber Bragg grating (FBG) vibration sensor based on the theory of the string vibration, combined with neural network adaptive dynamic programming algorithm for the perimeter security alarm system make the detection intelligently. Intelligent information processing unit identify the true cause of the vibration of the invasion or the natural environment by analyzing the frequency of vibration signals, energy, amplitude and duration. Compared with traditional perimeter security alarm systems, such as infrared perimeter security system and electric fence system, FBG perimeter security alarm system takes outdoor passive structures, free of electromagnetic interference, transmission distance through optical fiber can be as long as 20 km It is able to detect the location of event within short period of time (high-speed response, less than 3 second).This system can locate the fiber cable's breaking sites and alarm automatically if the cable were be cut. And the system can prevent effectively the false alarm from small animals, birds, strong wind, scattering things, snowfalls and vibration of sensor line itself. It can also be integrated into other security systems. This system can be widely used in variety fields such as military bases, nuclear sites, airports, warehouses, prisons, residence community etc. It will be a new force of perimeter security technology.
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Cui Zhang and Lixin Wang "Perimeter security alarm system based on fiber Bragg grating", Proc. SPIE 7853, Advanced Sensor Systems and Applications IV, 78531M (9 November 2010); https://doi.org/10.1117/12.868594
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KEYWORDS
Fiber Bragg gratings
Information security
Sensors
Defense and security
Network security
Standards development
Structured optical fibers
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