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Sensors 2017, 17(3), 514; doi:10.3390/s17030514

Design of an Acoustic Target Intrusion Detection System Based on Small-Aperture Microphone Array

1
Science and Technology on Microsystem Laboratory, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 201800, China
2
University of Chinese Academy of Sciences, Beijing 100049, China
3
IBM-Research China Lab, Shanghai 201203, China
*
Author to whom correspondence should be addressed.
Academic Editor: Vittorio M. N. Passaro
Received: 22 December 2016 / Revised: 17 February 2017 / Accepted: 2 March 2017 / Published: 4 March 2017
(This article belongs to the Special Issue Integrated Sensor Arrays and Array Signal Processing)
View Full-Text   |   Download PDF [989 KB, uploaded 4 March 2017]   |  

Abstract

Automated surveillance of remote locations in a wireless sensor network is dominated by the detection algorithm because actual intrusions in such locations are a rare event. Therefore, a detection method with low power consumption is crucial for persistent surveillance to ensure longevity of the sensor networks. A simple and effective two-stage algorithm composed of energy detector (ED) and delay detector (DD) with all its operations in time-domain using small-aperture microphone array (SAMA) is proposed. The algorithm analyzes the quite different velocities between wind noise and sound waves to improve the detection capability of ED in the surveillance area. Experiments in four different fields with three types of vehicles show that the algorithm is robust to wind noise and the probability of detection and false alarm are 96.67% and 2.857%, respectively. View Full-Text
Keywords: intrusion detection; small-aperture microphone array; wind noise; time delay estimation; WSN intrusion detection; small-aperture microphone array; wind noise; time delay estimation; WSN
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Zu, X.; Guo, F.; Huang, J.; Zhao, Q.; Liu, H.; Li, B.; Yuan, X. Design of an Acoustic Target Intrusion Detection System Based on Small-Aperture Microphone Array. Sensors 2017, 17, 514.

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