| 引用本文: | 黎琼炜,吕海宝.天线型光纤传感器的建模与仿真.[J].国防科技大学学报,1998,20(2):79-84.[点击复制] |
| Li Qiongwei,Lv Haibao.The Model and Simulation of Antenna-Shaped Optical Fiber Sensor[J].Journal of National University of Defense Technology,1998,20(2):79-84[点击复制] |
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| 天线型光纤传感器的建模与仿真 |
| 黎琼炜, 吕海宝 |
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(国防科技大学 机电工程与仪器系 湖南 长沙 410073)
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| 摘要: |
| 反射式强度调制光纤位移传感器(天线型FOS)由发射光纤和接收光纤按一定的排列方式组合而成, 是一定数量的单光纤对的特定组合。本文基于已有的单光纤对的调制函数的数学模型, 通过分析FOS中光纤的排列方式, 在忽略光纤包层和粘结剂厚度的情况下, 利用几何和概率统计的理论做了适当的假设, 建立了同轴型、半圆型、随机型光纤传感器调制函数的通用数学模型, 并对所建模型进行了仿真。利用专门研制的测试系统对建模和仿真结果进行了验证。 |
| 关键词: 光纤传感器、强度调制、调制函数、建模、仿真 |
| DOI： |
| 投稿日期：1997-06-20 |
| 基金项目: |
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| The Model and Simulation of Antenna-Shaped Optical Fiber Sensor |
| Li Qiongwei, Lv Haibao |
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(Department of Mechatronic Engineering and Instrument, NUDT, Changsha, 410073)
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| Abstract: |
| The reflective itensity-modulated optical fiber sensor for measuring displacement, the antenna-shaped optical fiber sensor, is usually composed of a fiber bundle with the emitting and receiving fibers in a specific arrangement at the probe tip. The three elementary types of fiber arrangement are: concentric distribution, semicircular distribution and random distribution. In comparison with the size of the optical fiber sensor, the thickness of clad and binding element of the fibers is so small that it can be ignored. The mathematical models of the modulation function for the single fiber couple composed of both an emitting fiber and a receiving one are presented. After analyzing the distribution of the fibers inside the optic fiber sensor by using the geometric and statistical theories, the general mathematical models of modulation function for the three types of the sensors mentioned above are proposed. And all the models are simulated with computer and all the simulating results are briefly analyzed. |
| Keywords: optical fiber sensor, intensity modulating, modulation function, model, simulation |
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