An armored-cable-based fiber bragg grating sensor array for perimeter fence intrusion detection

Hao, Jianzhong; Dong, Bo; Paulose, Varghese; Phua, Jiliang; Foo, Siang Fook

doi:10.1117/12.918980

Cited by 2 publications

(2 citation statements)

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“…Hao et al [105] reported an armored cable based FBG perimeter intrusion detection sensor. The report detailed the results from an in depth field trial showing the system could resolve nuisance events and uses a commercial FBG interrogator to resolve the signals from an array of sensors.…”

Section: Quasi-distributed Fiber Optic Pidsmentioning

confidence: 99%

Optical Fiber Sensors in Physical Intrusion Detection Systems: A Review

2016

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Fiber optic sensors have become a mainstream sensing technology within a large array of applications due to their inherent benefits. They are now used significantly in structural health monitoring, and are an essential solution for monitoring harsh environments. Since their first development over thirty years ago, they have also found promise in security applications. This paper reviews all of the optical fiber based techniques used in physical intrusion detection systems. It details the different approaches used for sensing, interrogation and networking, by research groups, attempting to secure both commercial and residential premises from physical security breaches. The advantages and disadvantages of the systems are discussed and each of the different perimeter protection methods are outlined, namely, in-ground, perimeter fence, and window and door protection. The study reviews the progress in optical fiber based intrusion detection techniques from the past through to current state-of-the-art systems and identifies areas which may provide opportunities for improvement, as well as proposing future directions in this field.

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Section: Quasi-distributed Fiber Optic Pidsmentioning

confidence: 99%

Optical Fiber Sensors in Physical Intrusion Detection Systems: A Review

2016

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“…A Φ-OTDR uses a single mode fiber for optical transmission and sensing, and can be used for real-time monitoring and accurate positioning across long distances [ 1 , 2 ]. It has been used for monitoring the health of engineering structures, optical fiber perimeter protection and gas or oil pipeline safety pre-warning systems [ 3 , 4 , 5 , 6 ]. Accurate recognition of different vibration signals is crucial in a Φ-OTDR pre-warning system.…”

Section: Introductionmentioning

confidence: 99%

Recognition of a Phase-Sensitivity OTDR Sensing System Based on Morphologic Feature Extraction

Sun

Feng

Yan

et al. 2015

Sensors

116

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This paper proposes a novel feature extraction method for intrusion event recognition within a phase-sensitive optical time-domain reflectometer (Φ-OTDR) sensing system. Feature extraction of time domain signals in these systems is time-consuming and may lead to inaccuracies due to noise disturbances. The recognition accuracy and speed of current systems cannot meet the requirements of Φ-OTDR online vibration monitoring systems. In the method proposed in this paper, the time-space domain signal is used for feature extraction instead of the time domain signal. Feature vectors are obtained from morphologic features of time-space domain signals. A scatter matrix is calculated for the feature selection. Experiments show that the feature extraction method proposed in this paper can greatly improve recognition accuracies, with a lower computation time than traditional methods, i.e., a recognition accuracy of 97.8% can be achieved with a recognition time of below 1 s, making it is very suitable for Φ-OTDR system online vibration monitoring.

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An armored-cable-based fiber bragg grating sensor array for perimeter fence intrusion detection

Cited by 2 publications

References 0 publications

Optical Fiber Sensors in Physical Intrusion Detection Systems: A Review

Optical Fiber Sensors in Physical Intrusion Detection Systems: A Review

Recognition of a Phase-Sensitivity OTDR Sensing System Based on Morphologic Feature Extraction

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