A novel fiber-optical vibration defending system with on-line intelligent identification function

Huijuan Wu; Xin Xie; Hanyu Li; Xiaoyu Li; Yu Wu; Yuan Gong; Yunjiang Rao

doi:10.1117/12.2034275

15 October 2013 A novel fiber-optical vibration defending system with on-line intelligent identification function

Huijuan Wu, Xin Xie, Hanyu Li, Xiaoyu Li, Yu Wu, Yuan Gong, Yunjiang Rao

Proceedings Volume 8924, Fourth Asia Pacific Optical Sensors Conference; 89241P (2013) https://doi.org/10.1117/12.2034275
Event: Asia Pacific Optical Sensors Conference 2013, 2013, Wuhan, China

Abstract

Capacity of the sensor network is always a bottleneck problem for the novel FBG-based quasi-distributed fiberoptical defending system. In this paper, a highly sensitive sensing network with FBG vibration sensors is presented to relieve stress of the capacity and the system cost. However, higher sensitivity may cause higher Nuisance Alarm Rates (NARs) in practical uses. It is necessary to further classify the intrusion pattern or threat level and determine the validity of an unexpected event. Then an intelligent identification method is proposed by extracting the statistical features of the vibration signals in the time domain, and inputting them into a 3-layer Back-Propagation(BP) Artificial Neural Network to classify the events of interest. Experiments of both simulation and field tests are carried out to validate its effectiveness. The results show the recognition rate can be achieved up to 100% for the simulation signals and as high as 96.03% in the real tests.

Citation Download Citation

Huijuan Wu, Xin Xie, Hanyu Li, Xiaoyu Li, Yu Wu, Yuan Gong, and Yunjiang Rao "A novel fiber-optical vibration defending system with on-line intelligent identification function", Proc. SPIE 8924, Fourth Asia Pacific Optical Sensors Conference, 89241P (15 October 2013); https://doi.org/10.1117/12.2034275

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