| 基于三角滤波器的光纤光栅交叉敏感技术研究 |
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| 引用本文： | 衣红钢,巩宪锋,王长松,白荣莉.基于三角滤波器的光纤光栅交叉敏感技术研究[J].传感器与微系统,2006,25(1):16-18. |
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| 作者姓名： | 衣红钢 巩宪锋 王长松 白荣莉 |
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| 作者单位： | 1. 北京科技大学,机械工程学院,北京,100083
2. 邢台钢铁有限责任公司,河北,邢台,054027 |
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| 摘 要： | 光纤光栅传感器对温度、应变都具有敏感性。在作为应变传感器使用时,为了保证测量精度,利用FFP(fiber Fabry-Pérot)干涉仪反射谱的上升沿和下降沿设计了三角陷波器,实现了光纤光栅应变的单参数测量,有效地消除了温度的交叉敏感影响。该方法具有原理简单、易于实现等优点,在-20~70℃温度变化范围内,应变误差为±4×10-6,能够满足桥梁测量中对该参数的要求。
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| 关 键 词： | 光纤光栅 交叉敏感 三角滤波器 应变 |
| 文章编号： | 1000-9787（2006）01-0016-03 |
| 收稿时间： | 2005-12-29 |
| 修稿时间： | 2005年12月29日 |
Research on fiber grating cross-sensitivity by triangle filter |
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| YI Hong-gang,GONG Xian-feng,WANG Chang-song,BAI Rong-li.Research on fiber grating cross-sensitivity by triangle filter[J].Transducer and Microsystem Technology,2006,25(1):16-18. |
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| Authors: | YI Hong-gang GONG Xian-feng WANG Chang-song BAI Rong-li |
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| Abstract: | Fiber grating sensor is sensitive to temperature and strain.To improve its accuracy as a strain sensor,a triangle notch filter has been designed to realize single-parameter measurement of fiber grating strain,which utilizes the falling and rising edges of the reflective spectrum of the fiber Fabry-Pérot(FFP) interferometer,and influence of temperature on cross-sensitivity is effectivelyeliminated.The advantage of the project is that principle is simple and realization is easy.The error of strain is ±4 ×10~(-6) in the temperature range of-20~70 ℃,and it can meet a demand for the parameter in bradge measurement. |
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| Keywords: | fiber grating cross-sensitivity triangle filter strain |
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