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

Sensors

Jingchang Huang¹  Baoqing Li²  Xingshui Zu²  Qin Zhao²  Huawei Liu²  Xiaobing Yuan²  Feng Guo² 

[1] IBM-Research China Lab, Shanghai 201203, China;Science and Technology on Microsystem Laboratory, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 201800, China;

关键词: intrusion detection;    small-aperture microphone array;    wind noise;    time delay estimation;    WSN;   

DOI  :  10.3390/s17030514

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown