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采用后向瑞利散射空间差分的周界安防分布式振动监测

Distributed vibration sensing of perimeter security based on space difference of Rayleigh backscattering

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摘要

提出了应用于周界安防的基于后向瑞利散射光空间差分干涉的光纤分布式振动传感监测方案。环境振动信号引起传感光纤的相位变化, 含有相位信息的后向瑞利散射信号注入到非平衡迈克尔逊干涉仪, 实现了后向瑞利散射信号的空间差分干涉, 光纤分布式振动传感监测完成相位信号的解调, 提高了系统的灵敏度。该系统能够实时监测入侵者的行走路线和速率以及模拟挖掘的距离的判断, 实现了15 dB的信噪比以及35 m的探测距离。

Abstract

A optical distributed vibration sensing(DVS) scheme based on the space difference of Rayleigh backscattering was presented for perimeter security. In this scheme Rayleigh backscattered light with phase changes induced by vibration signal along the sensing fiber was split and fed into an imbalanced Michelson interferometer. The space difference of Rayleigh backscattering was realized. The DVS system realized the phase demodulation of the Rayleigh backscattered light to improve the sensitivity of the system. The distributed vibration sensing system based on space difference of Rayleigh backscattering can restore the walking route, the velocity of the intruder and the distance of the simulative digger, and obtain the demodulated signal SNR of 15 dB and detection distance of 35 m.

Newport宣传-MKS新实验室计划
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中图分类号:TP212.1

DOI:10.3788/irla201847.0522001

所属栏目:光通信与光传感

基金项目:国家自然科学基金(61605101); 山东省重点研发计划(2015GSF120001); 山东省重点研发计划(2014GGX103019)

收稿日期:2017-12-05

修改稿日期:2018-01-03

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尚 盈:齐鲁工业大学(山东省科学院), 山东省科学院激光研究所, 山东 济南 250014
王 晨:齐鲁工业大学(山东省科学院), 山东省科学院激光研究所, 山东 济南 250014
王 昌:齐鲁工业大学(山东省科学院), 山东省科学院激光研究所, 山东 济南 250014
刘小会:齐鲁工业大学(山东省科学院), 山东省科学院激光研究所, 山东 济南 250014
孙志慧:齐鲁工业大学(山东省科学院), 山东省科学院激光研究所, 山东 济南 250014
倪家升:齐鲁工业大学(山东省科学院), 山东省科学院激光研究所, 山东 济南 250014
彭刚定:齐鲁工业大学(山东省科学院), 山东省科学院激光研究所, 山东 济南 250014新南威尔士大学 电气工程与电信学院, 新南威尔士 2052

联系人作者:尚盈(sy81012607@163.com)

备注:尚盈(1981-), 男, 副研究员, 硕士, 主要从事光纤传感及系统设计方面的研究。

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引用该论文

Shang Ying,Wang Chen,Wang Chang,Liu Xiaohui,Sun Zhihui,Ni Jiasheng,Peng Gangding. Distributed vibration sensing of perimeter security based on space difference of Rayleigh backscattering[J]. Infrared and Laser Engineering, 2018, 47(5): 0522001

尚 盈,王 晨,王 昌,刘小会,孙志慧,倪家升,彭刚定. 采用后向瑞利散射空间差分的周界安防分布式振动监测[J]. 红外与激光工程, 2018, 47(5): 0522001

被引情况

【1】 曲洪权, 宫殿君, 张常年, 王彦平. 光纤入侵信号的特征提取与识别算法. 激光与光电子学进展, 2019, 56(13): 130601--1

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