近年来，相位敏感光时域反射计（OTDR）振动传感系统性能提升的研究进展。

Recent Progress in the Performance Enhancement of Phase-Sensitive OTDR Vibration Sensing Systems.

机构信息

Key Laboratory of Advanced Transducers and Intelligent Control Systems (Ministry of Education and Shanxi Province), Taiyuan University of Technology, Taiyuan 030024, China.

College of Physics and Optoelectronics, Taiyuan University of Technology, Taiyuan 030024, China.

出版信息

Sensors (Basel). 2019 Apr 10;19(7):1709. doi: 10.3390/s19071709.

DOI:10.3390/s19071709

PMID:30974777

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6479340/

Abstract

Recently, phase-sensitive Optical Time-Domain Reflectometry (Φ-OTDR)-based vibration sensor systems have gained the interest of many researchers and some efforts have been undertaken to push the performance limitations of Φ-OTDR sensor systems. Thus, progress in different areas of their performance evaluation factors such as improvement of the signal-to-noise ratio (), spatial resolution () in the sub-meter range, enlargement of the sensing range, increased frequency response bandwidth over the conventional limits, phase signal demodulation and chirped-pulse Φ-OTDR for quantitative measurement have been realized. This paper presents an overview of the recent progress in Φ-OTDR-based vibration sensing systems in the different areas mentioned above.

摘要

最近，基于相敏光时域反射（Φ-OTDR）的振动传感器系统引起了许多研究人员的兴趣，并且已经做出了一些努力来推动Φ-OTDR 传感器系统的性能极限。因此，在其性能评估因素的不同领域取得了进展，例如提高了信噪比（）、在亚米范围内的空间分辨率（）、扩大了传感范围、在传统限制范围内增加了频率响应带宽、相位信号解调以及用于定量测量的啁啾脉冲 Φ-OTDR。本文综述了上述不同领域中基于Φ-OTDR 的振动传感系统的最新进展。