Light intensity modulation fiber-optic sensor for curvature measurement
Light intensity modulation fiber-optic sensor for curvature measurement
复制标题
用于曲率测量的光强度调制光纤传感器
DOI：
10.1016/j.optlastec.2009.10.009
复制
发表时间：
2010-06-01
影响因子：
5
通讯作者：
Liu, Renqiang
中科院分区：
文献类型：
--
作者：
Fu, Yili;Di, Haiting;Liu, Renqiang
研制了一种可直接测量曲率的光强调制型光纤传感器。它适用于测量薄、嵌入式或高度柔性的结构。对传感器的静态和动态特性进行了实验分析。结果表明，当曲率半径大于60 mm时，输出电压具有极性，且与曲率成良好的线性关系;基于几何光学理论，建立了相对输出损耗与敏感区结构参数（齿深、齿数、齿高、齿半角）和弯曲半径之间的数学模型。曲率光纤传感器可以用来构建一个准分布式光纤传感系统，可以同时测量曲率和扭转角。(C)2009爱思唯尔有限公司版权所有。
A light intensity modulation fiber-optic sensor, which can measure curvature directly, has been developed. It is suitable for the measurement of thin, embedded or highly flexible structures. An experimental analysis on the static and dynamic characteristics of sensor has been undertaken. The results show that the output voltage has polarity and a good linear relationship with curvature when the curvature radius is larger than 60 mm. The mathematical model relating the relative output loss, parameters of sensitive zone's configuration (depth, number, height and half angle of tooth) and bending radius is described analytically based on the geometric optics. Curvature fiber-optic sensors can be used to build a quasi-distributed fiber-optic sensor system, which can measure curvature and torsion angle simultaneously. (C) 2009 Elsevier Ltd. All rights reserved.