| 基于平面膜片温度压强同时测量的光纤光栅传感器 |
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| 引用本文： | 傅海威,傅君眉,乔学光,赵大壮,王宏亮,贾振安.基于平面膜片温度压强同时测量的光纤光栅传感器[J].西安电子科技大学学报,2005,32(1):151-155. |
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| 作者姓名： | 傅海威 傅君眉 乔学光 赵大壮 王宏亮 贾振安 |
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| 作者单位： | [1]西安交通大学电信学院微波与光通信研究所,陕西西安710049／／西安石油大学光纤传感实验室,陕西西安710065 [2]西安交通大学电信学院微波与光通信研究所,陕西西安710049 [3]西安石油大学光纤传感实验室,陕西西安710065 |
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| 基金项目： | 国家"863"计划资助项目(2002AA313150),国家自然科学基金资助项目(69877025),国家教育部科技重点项目(02190),陕西省自然科学基金资助项目(2000C34),陕西省教育厅科技项目(02JK158),西安市科技攻关项目(GG200126) |
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| 摘 要： | 提出一种基于膜片的双光纤Bragg光栅实现温度与压强同时区分测量的光纤光栅传感器．分别将光纤Bragg光栅沿膜片的径向和环向粘贴在膜片上,当温度发生变化或者膜片受到压力作用时,都会引起光纤Bragg光栅蜂值波长偏移．由于温度的变化所引起的两栅波长偏移量是相等的,此时两光纤Bmgg光栅波长偏移量之差完全取决于膜片所受的压强,据此可以实现温度与压强的同时区分测量．该传感器线性度很好,可以用来同时区分测量温度在40～110℃,压强在0～6MPa环境中的温度和压强,其温度测量误差不大于1℃,压强测量误差不大于0．2MPa．
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| 关 键 词： | 导波与光纤光学 光纤传感 光纤Bragg光栅传感 传感器灵敏度 |
| 文章编号： | 1001-2400(2005)01-0151-05 |
A novel plate diaphragm based in-fiber Bragg grating sensor for simultaneous measurement of temperature and pressure |
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| FU Hai-wei.A novel plate diaphragm based in-fiber Bragg grating sensor for simultaneous measurement of temperature and pressure[J].Journal of Xidian University,2005,32(1):151-155. |
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| Authors: | FU Hai-wei |
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| Affiliation: | (1) Inst. of Microwave and Optical Communication, School of Electronic and Infor. Eng., Xi′an Jiaotong Univ., Xi′an 710049, China;(2) Lab. of Optical Fiber Sensing, School of Science, Xi′an Shiyou Univ., Xi′an 710065, China |
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| Abstract: | A novel plate diaphragm based FBG sensor is proposed to measure temperature and pressure simultaneously. Two FBGs are attached radially and circumferentially to a metal diaphragm respectively, and when temperature and pressure change, the peak wavelength of the FBGs will shift. The peak wavelength shifts of the two FBGs induced by temperature are approximately the same when the different pressures are exerted on the sensor. The peak wavelength difference depends only on the exerted pressure. So the simultaneous measurement of the temperature and pressure can be carried out. The line arity of the sensor is good. The measurement ranges of temperature and pressure are 40℃～110℃ and 0～6MPa, and the temperature and pressure measurement errors are less than 1℃ and 0. 2MPa respectively. |
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| Keywords: | guided wave and fiber optics optical fiber sensing in-fiber Bragg grating sensing sensitivity of the sensor |
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