大型金属结构动态检测中的温度补偿方法研究  

Research on the Methods of Temperature Compensation in the Dynamic Monitoring of Large Metal Structures

作　　者：何进飞[1] 梁磊[1] 

机构地区：[1]武汉理工大学光纤传感技术研究中心,武汉430070

出　　处：《武汉理工大学学报》2010年第12期113-116,共4页Journal of Wuhan University of Technology

基　　金：国家自然科学基金(60537050)

摘　　要：通过对光纤光栅(FBG)交叉敏感性的机理研究,结合在大型浮吊金属结构上的应用,针对温度变化复杂特点:金属结构比热低,导热性能好、太阳光照角度经常变化、工作环境是海洋环境,分别采用补偿块法、十字交叉法、低通滤波法进行实验,结果表明低通滤波法满足工程实用要求。Through the research of the mechanism of the cross-sensitivity for Fiber Bragg Gratings,and combined in the application of large floating crane metal structures,for its temperature characteristics： its metal structure with low specific heat and good thermal conductivity、constantly changing angle of the sun light、it＇s working environment is the marine environment it＇s working environment,therefore,the temperature changes complex.Respectively used： method of temperature compensation block 、cross method 、low-pass filtering to experiments.The conclusion is that low-pass filtering which reached practical engineering requirements.

关 键 词：FBG 交叉敏感 温度补偿 低通滤波 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]