光纤布拉格光栅热式流量传感技术研究  

Research on Fiber Bragg Grating Thermal Flow Sensing Technology

作　　者：贾振安[1,2,3,4] 任杰 党硕 高宏 白燕[1,2,3,4] JIA Zhen-an;REN Jie;DANG Shuo;GAO Hong;BAI Yan(School of Science,Xi′an Shiyou University,Xi′an 710065,China;Shaanxi Engineering Research Center of Oil and Gas Resource Optical Fiber Detection,Xi′an 710065,China;Shaanxi Key Laboratory of Measurement and Control Technology for Oil and Gas Wells,Xi′an 710065,China;Research Laboratory for Optical Fiber Dynamic Detection of Oil Reservoirs,Key Laboratory of CNPC,Xi′an 710065,China)

机构地区：[1]西安石油大学理学院,陕西西安710065 [2]陕西省油气资源光纤探测工程技术研究中心,陕西西安710065 [3]陕西省油气井测控技术重点实验室,陕西西安710065 [4]CNPC测井重点实验室——油藏光纤动态监测研究室,陕西西安710065

出　　处：《红外》2022年第8期17-25,共9页Infrared

基　　金：陕西省教育厅重点实验室科研计划项目(18JS093);CNPC测井重点实验室基金项目(20216328)。

摘　　要：光纤布拉格光栅(Fiber Bragg Grating,FBG)热式流量传感技术具有测量阈值低、灵敏度高等优点,是近年来流量测量领域的研究热点。概述了FBG热式流量传感原理,总结了当前该技术研究的重点和难点问题(主要分为传感器加热、结构设计、温度补偿和封装增敏四个方面),旨在发现问题、展望未来。从近年来的典型研究成果入手,分析了电加热、光加热两种传感器加热方式和热线式传感结构。温度补偿和封装增敏部分则作为专题来研究,其中温度补偿旨在解决传感器加热换热与环境温度交叉敏感问题。最后归纳分析了该技术在大流量时的低灵敏度特性,并讨论了提升传感器灵敏度未来可能的研究方向和相关方法。Fiber Bragg Grating(FBG)thermal flow sensing technology has the advantages of low measurement threshold and high sensitivity,and has become a research hotspot in the field of flow measurement in recent years.In this paper,the principle of FBG thermal flow sensing is summarized,and the key and difficult problems in the current sensing technology are summarized(including sensor heating,structure design,temperature compensation and package sensitization),aiming at finding problems and looking into the future.Based on the typical research results in recent years,two kinds of heating methods and hot-wire sensing structure of electric heating and optical heating are analyzed.Temperature compensation and package sensitization are studied as special topics.Among them,temperature compensation aims to solve the cross-sensitivity problem of heat transfer and ambient temperature.Finally,the low sensitivity characteristics of the sensor technology under high flow are summarized and analyzed,and the possible research directions and related methods for improving the sensor sensitivity in the future are discussed.

关 键 词：光纤布拉格光栅 流量测量 热式流量传感器 灵敏度 

分 类 号：TN253[电子电信—物理电子学]