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| 温度/应变/扭曲三参量同时测量低成本传感系统 | |
| 引用本文： | 朱涛,饶云江,莫秋菊,周昌学,王久玲.温度/应变/扭曲三参量同时测量低成本传感系统[J].光子学报,2006,35(5):655-658. |
| 作者姓名： | 朱涛 饶云江 莫秋菊 周昌学 王久玲 |
| 作者单位： | 1. 重庆大学光电工程学院,重庆,400030;成都电子科技大学通信与信息工程学院,成都,610015 2. 成都电子科技大学通信与信息工程学院,成都,610015;重庆大学光电工程学院,重庆,400030 3. 重庆大学光电工程学院,重庆,400030 |
| 基金项目： | 教育部科学技术研究项目 , 重庆市自然科学基金 , 国家高技术研究发展计划(863计划) |
| 摘 要： | 提出了一种利用布喇格光纤光栅反射光作信号源、高频CO2激光脉冲写入的长周期光纤光栅和超周期光纤光栅作传感器实现温度、应变和扭曲同时测量的全光栅型低成本强度解调传感方案.文中利用长周期光纤光栅边缘滤波效应实现了温度、应变和扭曲传感信号的实时解调.实验结果表明，其温度和应变的测量灵敏度分别为－0.211 dB/℃和－0.012 dB/10με；而扭曲率的测量灵敏度为0.4394 dB/(rad·m－1)，是该法写入普通LPFG的4倍以上. |
| 关 键 词： | 传感器技术 光纤光栅 多参数测量 CO2激光 低成本 |
| 收稿时间： | 2005-08-25 |
| 修稿时间： | 2005年8月25日 |
Low Cost Sensing System for Simultaneous Measurements of Temperature, Strain and Torsion |
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| Zhu Tao,Rao Yunjiang,Mo Qiuju,Zhou Changxue,Wang Jiuling.Low Cost Sensing System for Simultaneous Measurements of Temperature, Strain and Torsion[J].Acta Photonica Sinica,2006,35(5):655-658. | |
| Authors: | Zhu Tao Rao Yunjiang Mo Qiuju Zhou Changxue Wang Jiuling |
| Institution: | 1 Department of Optoelectronic Engineering, Chongqing University, Chongqing 400030 2 School of Communication and Information Engineering, University of Electronics Science &; Technology of China, Chengdu 610015 |
| Abstract: | A novel low cost sensing system for simultaneous measurements of temperature,strain and torsion based on unique optical characteristics of long period fiber gratings(LPFGs) and ultra-long period fiber gratings(ULPFGs) induced by high frequency CO2 laser pulses was reported in this paper. Here an intensity-type demodulating approach which can satisfy the real measurement was realized based on the edge filtering effect of the LPFG and the ULPFG. The experimental results show that the sensitivities of temperature and strain are －0.211 dB/℃ and －0.012 dB/10με,respectively. And the sensitivity of torsion is 0.4394 dB/(rad·m－1),which is 4 times over than that of normal LPFG. |
| Keywords: | Sensing technology Fiber gratings Multi-parameter measurements CO_2 laser Low cost |
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