基于分布式声波传感系统的声波信号探测研究  

Research on Acoustic Signal Detection Based on Distributed Acoustic Sensing System

作　　者：解涛 秦海鑫 万强 董朝强 徐晨 Xie Tao;Qin Haixin;Wan Qiang;Dong Zhaoqiang;Xu Chen(The 13^(th)Research Institute,CETC,Shijiazhuang 050051,China;Hubei University of Technology,School of Science,Wuhan 430068,China)

机构地区：[1]中国电子科技集团公司第十三研究所,石家庄050051 [2]湖北工业大学理学院,武汉430068

出　　处：《微纳电子技术》2025年第4期133-139,共7页Micronanoelectronic Technology

摘　　要：利用分布式光纤传感技术在10 km长单模光纤(SMF)上进行声波信号的探测。采用搭建的分布式声波传感(DAS)系统,对不同频率(500、1000和2000 Hz)、不同声压(90~110 dB)的声波信号进行全光纤范围内的探测,实现了10 km光纤沿路的分布式声波信号探测与传输,声波信号信噪比(SNR)可达50 dB以上,空间分辨率为10 m。此外,该系统可以在更多场景下与纯光纤系统融合,构建双向无源音频传输系统,在长距离探测、信号传输等方面有着广阔的应用前景。Distributed fiber optic sensing technology was used to detect acoustic signals across a 10 km single-mode fiber(SMF).The distributed acoustic sensing(DAS)system was constructed to detect acoustic signals of different frequencies(500,1000 and 2000 Hz)and different sound pressures(90-110 dB)in the whole optical fiber range,and the distributed acoustic signal detection and transmission along the 10 km optical fiber were realized.The signal to noise ratio(SNR)of acoustic signal can reach more than 50 dB,and the spatial resolution is 10 m.In addition,the system can be integrated with the pure optical fiber system in more scenarios to build a bidirectional passive audio transmission system,which has broad application prospects in long-distance detection and signal transmission.

关 键 词：分布式光纤传感技术 分布式声波传感(DAS) 声波探测 双向无源 声源定位 

分 类 号：TN65[电子电信—电路与系统] TP212[自动化与计算机技术—检测技术与自动化装置]