Zero-Crossing Rate Based Efficient Identification of Intrusion Events in Fiber Perimeter Security Systems

Kun Liu; Lingfeng Weng; Junfeng Jiang; Pengfei Ma; Zhenshi Sun; Liwang Zhang; Tiegen Liu

doi:10.3788/AOS201939.1106002

Acta Optica Sinica, Volume. 39, Issue 11, 1106002(2019)

Zero-Crossing Rate Based Efficient Identification of Intrusion Events in Fiber Perimeter Security Systems

Kun Liu^1,2,3、*, Lingfeng Weng^1,2,3、**, Junfeng Jiang^1,2,3, Pengfei Ma^1,2,3, Zhenshi Sun^1,2,3, Liwang Zhang^1,2,3, and Tiegen Liu^1,2,3

Author Affiliations

¹Department of Precision Instruments and Optoelectronics Engineering, Tianjin University, Tianjin 300072, China

²Key Laboratory of Optoelectronic Information Technology, Ministry of Education, Tianjin University, Tianjin 300072, China

³Institute of Optical Fiber Sensing, Tianjin University, Tianjin 300072, China

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Figures & Tables(6)

Fig. 1. System sensing schematic

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Fig. 2. Structural diagram of support vector machine

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Fig. 3. Original signals of five events. (a) Cutting; (b) waggling; (c) climbing; (d) knocking; (e) no intrusion

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Fig. 4. Segment zero-crossing rates of five events. (a) Cutting; (b) waggling; (c) climbing; (d) knocking; (e) no intrusion

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Table 1. Extraction time of zero-crossing rate for four eventsms
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Table 1. Extraction time of zero-crossing rate for four eventsms
Event t₁ t₂ t₃ t₄ t₅ t₆ t_ave
Cutting 0.057 0.045 0.045 0.044 0.130 0.006 0.055
Waggling 0.050 0.046 0.044 0.062 0.156 0.009 0.061
Climbing 0.048 0.045 0.048 0.057 0.180 0.008 0.064
Knocking 0.047 0.047 0.048 0.061 0.129 0.008 0.057

Table 2. Comparison of event recognition results of two methods%
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Table 2. Comparison of event recognition results of two methods%
Event Cutting Waggling Climbing Knocking No intrusion
SVM recognition rate 98.75 99.17 92.08 100.00 95.58
RBF recognition rate 85.10 99.70 87.30 70.90 -

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Kun Liu, Lingfeng Weng, Junfeng Jiang, Pengfei Ma, Zhenshi Sun, Liwang Zhang, Tiegen Liu. Zero-Crossing Rate Based Efficient Identification of Intrusion Events in Fiber Perimeter Security Systems[J]. Acta Optica Sinica, 2019, 39(11): 1106002

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