| 基于啁啾光纤布拉格光栅的流速传感器 |
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| 引用本文： | 杨淑连,盛翠霞,魏芹芹,何建廷,宿元斌,申晋.基于啁啾光纤布拉格光栅的流速传感器[J].光电子．激光,2013(9):1683-1687. |
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| 作者姓名： | 杨淑连 盛翠霞 魏芹芹 何建廷 宿元斌 申晋 |
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| 作者单位： | 山东理工大学 电气与电子工程学院,山东 淄博 255049;山东理工大学 电气与电子工程学院,山东 淄博 255049;山东理工大学 电气与电子工程学院,山东 淄博 255049;山东理工大学 电气与电子工程学院,山东 淄博 255049;山东理工大学 电气与电子工程学院,山东 淄博 255049;山东理工大学 电气与电子工程学院,山东 淄博 255049 |
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| 基金项目： | 山东省自然科学基金(ZR2010FM005)资助项目 , 盛翠霞, 魏芹芹, 何建廷, 宿元斌, 申晋 (山东理工大学 电气与电子工程学院,山东 淄博 255049) |
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| 摘 要： | 设计了一种基于啁啾光纤布拉格光栅(CFBG)的新型 流速传感器,包括CFBG压强传 感机构和文丘里管。压强传感机构中,密闭铝箔管横截面两边的压力差导致矩形悬臂梁变 形,从而引起粘贴在悬臂梁侧边的CFBG的反射光谱带宽发生变化。通过 检测其带宽,得到被测流体的速度。实验表明,CFBG反射光谱带宽对温度不敏 感,流速传感器的动态测量范围为8~100mm/s,设计方案是切实可行 的。
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| 关 键 词： | 光纤传感器 流速传感器 流量测量 啁啾光纤布拉格光栅 |
| 收稿时间： | 2013/2/28 0:00:00 |
A novel flow velocity sensor based on chirped fiber Bragg grating |
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| Institution: | School of Electric and Electronic Engineering,Shandong University of Technolo gy,Zibo 255049,China;School of Electric and Electronic Engineering,Shandong University of Technolo gy,Zibo 255049,China;School of Electric and Electronic Engineering,Shandong University of Technolo gy,Zibo 255049,China;School of Electric and Electronic Engineering,Shandong University of Technolo gy,Zibo 255049,China;School of Electric and Electronic Engineering,Shandong University of Technolo gy,Zibo 255049,China;School of Electric and Electronic Engineering,Shandong University of Technolo gy,Zibo 255049,China |
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| Abstract: | A novel flow velocity sensor based on a chirped fiber Bragg grating (CFBG) that includes the chirped fiber grating pressure sensing setup and Venturi tube has been proposed, aiming to increase the size and reduce the cost of the sensor system.The CFBG-b ased intensity-modulated sensor shows the potential applications in various sensing areas due to their many advantages.The relationship between the flow velocity and the bandwidth of the reflection spectrum of the chirped fiber Bragg grating is derived.The deformation of the rectangular cantilever beam is caused by the pressure on two sides of the cross section of the aluminum foil tube in the pressure sensing setup,and it results in the bandwidth change of th e reflection spectrum of the chirped fiber Bragg grating that is mounted at the side of the c antilever.The flow velocity can be obtained by measuring the bandwidth of the reflection spectrum o f the chirped fiber Bragg grating,which is not sensitive to the temperature.The experimental results verify the feasibilit y of the proposed sensor with a measurement range from 8to 100mm/s. |
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| Keywords: | fiber optic sensor flow velocity sensor flow measurement chirped fiber Bragg grating (CFBG) |
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