| 狄海廷,付宜利.形变光纤传感器的特性及结构优化[J].光电子激光,2014,(6):1092~1097 |
| 形变光纤传感器的特性及结构优化 |
| Characteristics and structural optimization of fiber-optic deformation sensor |
| 投稿时间：2014-01-08 |
| DOI： |
| 中文关键词: 形变光纤传感器 传感特性 光泄漏区优化 正交仿真试验 光线追迹 |
| 英文关键词:fiber-optic deformation sensor characteristics of the sensor optim ization of light leakage zone orthogonal simulation experiment ray tracing |
| 基金项目:中央高校基本科研业务专项基金(DL13CB03)和哈尔滨市科技创新人才研究专 项基金(2012RFQXG065)资助项目 (1.东北林业大学 工程技术学院,黑龙江哈尔滨 150040; 2.哈尔滨工业大学机器人技术与系统国家重点实验室,黑龙江哈尔滨 150080) |
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| 中文摘要: |
| 提出一种可直接检测结构形变的光强调制型光纤传 感器,采用弯曲增敏技 术提高光纤对弯曲变形的灵敏度。利用悬臂梁、简支梁和标准圆柱体对传感器的静态特性进 行分析,得到 传感器的静态输出曲线,并对传感器的灵敏度方向性进行了测试,结果表明,本文传感器 可以区分弯曲 变形的方向,且变形曲率在－16．67～16．67m－1(对应的弯曲半径为60mm)范围内有较好的线性输 出。对传感器进行Monte Carlo光线追迹分析,并结合正交试验法对传感器的光泄漏区结构 参数进行了优化 分析,结果表明,光泄漏区的深度和齿数对传感器的灵敏度有显著影响,为提高传感器的性 能提供了依据。 |
| 英文摘要: |
| The structural strain and deformation are functionally related quantit ies and the latter can usually be inferred from the former.However,the strain is very small for a thi n structure with a small deformation, so it is very hard to be detected.A light intensity modulation fiber-opti c sensor,which can measure deformation directly,is developed.A light leakage zone is introduced to increase the sensitivity of the fiber to deformation.Cantilevered beam,simple support beam and cylinders are used to an alyze the static characteristics,and the static curve of the sensor is obtained .The sensitive directionality of the sensor is also measured and analyzed.The results show that the sensor can distinguish the direction of defo rmation and the output of sensor is linear with deformation curvature in the range from －16.67m－1 to 16.67m－1 (the corresponding radius is larger than 60mm).The Monte Carlo simulation by ray tracing and an orthogonal matrix are us ed to optimize the fiber-optic sensor′s configuration.The simulation results show that the depth of the light leakage zone and the number of teeth are two main parameters that affect the sensor′s sensitivity,which can provide a scientific evidence for better performance of the sensors. |
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