高温 Raman 分布式光纤传感器与不同特种光纤的对比实验研究。

Comparative Experimental Study of a High-Temperature Raman-Based Distributed Optical Fiber Sensor with Different Special Fibers.

机构信息

Photonics Engineering Group, University of Cantabria, 39005 Santander, Spain.

CIBER-bbn, Instituto de Salud Carlos III, 28029 Madrid, Spain.

出版信息

Sensors (Basel). 2019 Jan 30;19(3):574. doi: 10.3390/s19030574.

DOI:10.3390/s19030574

PMID:30704046

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6387110/

Abstract

An experimental study of a high temperature distributed optical fiber sensor based on Raman Optical-Time-Domain-Reflectometry (ROTDR) (up to 450 °C) and optical fibers with different coatings (polyimide/carbon, copper, aluminum and gold) is presented. Analysis of the distributed temperature sensor (DTS) measurements determined the most appropriate optical fiber to be used in high temperature industrial environment over long periods of time. To demonstrate the feasibility of this DTS for an industrial application, an optical cable was designed with the appropriate optical fiber and it was hermetically sealed to provide the required mechanical resistance and isolate the fiber from environmental degradations. This cable was used to measure temperature up to 360 °C of an industrial furnace during 7 days.

摘要

本文提出了一种基于喇曼光时域反射（ROTDR）（高达 450°C）和不同涂层（聚酰亚胺/碳、铜、铝和金）光纤的高温分布式光纤传感器的实验研究。通过对分布式温度传感器（DTS）测量的分析，确定了在高温工业环境中长时间使用最合适的光纤。为了证明这种 DTS 在工业应用中的可行性，设计了一种带有合适光纤的光缆，并对其进行了密封，以提供所需的机械强度，并将光纤与环境降解隔离开来。该光缆用于测量工业炉内温度，最高可达 360°C，持续 7 天。