基于线型光纤光栅阵列传感的引气管道泄漏监测研究  

Research on leakage monitoring of aircraft duct based on linear fiber grating array

作　　者：曾川 童杏林[2] 李泽恺 黄文种 史学锋 ZENG Chuan;TONG Xinglin;LI Zekai;HUANG Wenzhong;SHI Xuefeng(Department of Instrument Science and Technology,School of Mechanical and Electrical Engineering,Wuhan University of Technology,Wuhan 430070,China;National Engineering Research Center of Fiber Optic Sensing Technology and Networks,Wuhan University of Technology,Wuhan 430070,China;Department of Electronic Information,School of Information Engineering,Wuhan University of Technology,Wuhan 430070,China)

机构地区：[1]武汉理工大学机电工程学院仪器科学与技术系,武汉430070 [2]武汉理工大学光纤传感技术与网络国家工程研究中心,武汉430070 [3]武汉理工大学信息工程学院电子信息系,武汉430070

出　　处：《激光技术》2025年第2期271-277,共7页Laser Technology

基　　金：国家自然科学基金资助项目(62275207);长江水科学研究联合基金资助项目(U2340226)。

摘　　要：飞机引气管泄漏监测系统主要采用共晶盐电类过热探测器作为其温度传感单元,为了克服该系统现存的电磁兼容性差、测量精度低、响应时间慢等技术瓶颈,对飞机引气管道泄漏探测的线型阵列光纤传感探头进行了研究,采用数学建模与模拟仿真的方法设计了光纤光栅阵列参数及封装结构体等,并进行了实验验证与数学分析。结果表明,该传感探头具备一定的应变免疫与振动抵抗能力,感温分辨率0.1 m,定位精度1.0 m,温度测量精度±3℃,工作温度0℃~180℃。此研究结果可替代共晶盐类泄漏探测传感器,为实现远程分布式轻型飞机的引气泄漏温度测量提供了一种新思路。The current aircraft inlet pipe leakage monitoring system primarily employs eutectic salt electric superheat detectors as temperature sensing units.A linear array optical fiber sensor probe was investigated for detecting leaks in the aircraft inlet pipe,aiming to overcome the existing technical bottlenecks of the system such as poor electromagnetic compatibility,low measurement accuracy,and slow response time.The fiber grating array parameter design and package structure design were carried out by mathematical modeling and simulation methods,and experimental verification and mathematical analysis were carried out.The research demonstrates that the sensor probe has a certain strain immunity and vibration resistance ability with a temperature sensing accuracy of 0.1 m and positioning accuracy of 1.0 m.A temperature measurement accuracy within±3℃over a working temperature range from 0℃~180℃was achieved.The results of this study provide a new idea for remote distributed and lightweight aircraft bleed air leakage temperature measurement instead of eutectic salt leak detection sensors.

关 键 词：光纤光学 飞机引气 光纤布喇格光栅 温度传感 分布式阵列传感器 大量程 

分 类 号：TP212.1[自动化与计算机技术—检测技术与自动化装置]