| 光纤双向应变-位移点式传感器 |
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| 引用本文： | 李川,张以谟,刘铁根,周枫,李英娜.光纤双向应变-位移点式传感器[J].光子学报,2003,32(4):448-450. |
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| 作者姓名： | 李川 张以谟 刘铁根 周枫 李英娜 |
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| 作者单位： | 1. 昆明理工大学信息工程和自动化学院,昆明,650051
2. 天津大学光电信息技术科学教育部重点实验室,天津,300072 |
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| 基金项目： | 国家自然科学基金 (60 0 770 2 3 )，云南省自然科学基金(2 0 0 2F0 0 0 4R)资助项目 |
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| 摘 要： | 选择不同间距的基片自由端和不同长度的自由悬垂光纤研制了利用光纤弯曲损耗的光纤双向应变-位移传感器.该传感器可分别用于测量应变和位移.实验表明:悬臂梁上的应变标准误差约为～26 με.微位移架上的位移标准误差约～0.06 mm.基本满足建筑结构对测量精度的要求.
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| 关 键 词： | 光纤双向应变-位移传感器 弯曲损耗 拉敏区 压敏区 应变 位移 |
| 收稿时间： | 2002/6/7 |
| 修稿时间： | 2002年6月7日 |
Point Sensor of Fiber-Optic Bi-directional Strain-displacement |
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| Li Chuan ,Zhang Yimo ,Liu Tiegen ,Zhou Feng ,Li Yingna College of Information Engineering and Automation,Kunming University of Science and Technology,Kunming City,PRC, The Key Laboratory of Optoelectronics Information Science & Technology,EMC,Tianjin University,Tianjin City,PRC.Point Sensor of Fiber-Optic Bi-directional Strain-displacement[J].Acta Photonica Sinica,2003,32(4):448-450. |
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| Authors: | Li Chuan Zhang Yimo Liu Tiegen Zhou Feng Li Yingna College of Information Engineering and Automation Kunming University of Science and Technology Kunming City PRC The Key Laboratory of Optoelectronics Information Science & Technology EMC Tianjin University Tianjin City PRC |
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| Institution: | Li Chuan 1,Zhang Yimo 2,Liu Tiegen 2,Zhou Feng 1,Li Yingna 1 1 College of Information Engineering and Automation,Kunming University of Science and Technology,Kunming City,PRC,650051 2 The Key Laboratory of Optoelectronics Information Science & Technology,EMC,Tianjin University,Tianjin City,PRC,300072 |
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| Abstract: | Based on the bending loss of fiber, the fiber-optic bi-directional strain-displacement sensor was developed. If chosen the different gaps of substrate free ends and the different lengths of freely suspected fibers, the sensor could be used for measuring strain or displacement. In the cantilever, the strain experiment indicated that the standard error was ～26 με. In the micro-displacement rack, the displacement experiment indicated that the standard error was ～0.06 mm. It was noteworthy that the above results could be satisfied with the measurement precisions in construction. |
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| Keywords: | Fiber-optic strain-displacement sensor Bending loss Tension-sensitized section Compression-sensitized section Strain Displacement |
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