传感技术学报2025，Vol.38Issue(7)：1174-1181,8.DOI:10.3969/j.issn.1004-1699.2025.07.005
基于有限差分原理的温度场分布式光纤监测与重构方法
Distributed Optical Fiber Monitoring and Reconstruction Method of Temperature Field Based on Finite Difference Principle
摘要
Abstract
Real-time monitoring of temperature of oil pipe housing in fuel control system is of great significance to ensure safe service of aero-engine.A structural surface temperature field reconstruction method based on finite difference principle(FDM)is introduced.Re-construction is verified by numerical simulation results using ANSYS finite element method.A monitoring and reconstruction system of structural temperature field based on distributed optical fiber sensor with high spatial resolution reflection in optical frequency domain is constructed.The root mean square error of reconstructed temperature field on the top and side of the pipe shell is 0.68℃and 0.87℃,respectively.The proposed method realizes a reconstruction of temperature field of approximate global measurement,solves the problem of monitoring and inversion of the high-density temperature distribution of fuel system pipeline in flammable and explosive occasions,and provides technical support for structural health management of oil pipeline shell.关键词
结构健康监测/温度场重构/有限差分原理/通油管道壳体/光频域反射型分布式光纤传感器Key words
structural health monitoring/temperature field reconstruction/finite difference principle/oil pipeline housing/optical fre-quency domain reflection type distributed fiber optic sensor分类
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赵悦琦,曾捷,占俊,朱洋洋,卢睿昕,赵博涵,孙阳阳..基于有限差分原理的温度场分布式光纤监测与重构方法[J].传感技术学报,2025,38(7):1174-1181,8.基金项目
航空科学基金项目(20220028052002) （20220028052002）
国家自然科学基金资助项目(52275536) （52275536）
直升机旋翼动力学国家级重点实验室基金项目(61422202207) （61422202207）
科技部国家重点研发计划项目(2021YFC2802300) （2021YFC2802300）
