| 一种用于泥石流地声监测的FBG加速度传感器 |
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| 引用本文： | 蔡德所,罗志会,王凤钧,陈思,文泓桥. 一种用于泥石流地声监测的FBG加速度传感器[J]. 光电子．激光, 2017, 28(8): 830-835 |
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| 作者姓名： | 蔡德所 罗志会 王凤钧 陈思 文泓桥 |
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| 作者单位： | 广西水利电力勘测设计研究院,广西 南宁 530023 ;三峡大学 理学院,湖北 宜昌 443002,三峡大学 理学院,湖北 宜昌 443002,三峡大学 理学院,湖北 宜昌 443002,三峡大学 理学院,湖北 宜昌 443002,武汉理工大学 光纤传感技术国家工程实验室,湖北 武汉 430070 |
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| 基金项目： | 湖北省自然科学基金(2015CFB436)、湖北省重大科技专项(2014BEC059)和广西水利电力勘测设计院(SDHZ2014055)资助项目 (1.广西水利电力勘测设计研究院,广西 南宁 530023； 2.三峡大学 理学院,湖北 宜昌 443002； 3.武汉理工大学 光纤传感技术国家工程实验室,湖北 武汉 430070) |
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| 摘 要： | 针对泥石流地声的特性,设计了一种悬臂梁 结构的光纤布拉格光栅(FBG)加速度传感器。理论分析了FBG传感器灵敏度、谐振频率的 影响因素,对传感器 的关键参数进行了优化设计；引入抗弯光纤、高分子超薄涂覆以及CCD解调等新技术,改 善传感器的灵 敏度、串接复用等性能；最后进行了对比测试。实验结果表明:所设计的传感器灵敏度高达 400pm/g,固有频率为310Hz,能很好地满足 泥石流地声监测的要求。
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| 关 键 词： | 传感器 加速度传感器 光纤布拉格光栅(FBG) 泥石流 地声 |
| 收稿时间： | 2016-09-22 |
A FBG accelerometer for monitoring the geosound of debris flow |
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| CAI De-suo,LUO Zhi-hui,WANG Feng-jun,CHE N Si and WEN Hong-qiao. A FBG accelerometer for monitoring the geosound of debris flow[J]. Journal of Optoelectronics·laser, 2017, 28(8): 830-835 |
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| Authors: | CAI De-suo LUO Zhi-hui WANG Feng-jun CHE N Si WEN Hong-qiao |
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| Affiliation: | Guangxi Water & Power Design Institute,Nanning,530023China ;College of Sc ience,China Three Gorges University,Yichang 443002,China,College of Sc ience,China Three Gorges University,Yichang 443002,China,College of Sc ience,China Three Gorges University,Yichang 443002,China,College of Sc ience,China Three Gorges University,Yichang 443002,China and National Engineerin g Laboratory for Fiber Optical Sensing Technology,Wuhan University of Technology ,Wuhan 430070,China |
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| Abstract: | According to the characteristics of the geosound of de bris flow,a cantilever acceleration sensor based on fiber Bragg grating (FBG) is proposed.The influencing factors o f the sensitivity and the resonant frequency of the sensor are analyzed theoretically,and the key structure parame ters of the sensor are optimized by experiments.Moreover,some new technologies,such as the anti-bending optical fiber,the super thin coating with polymer material and the FBG charge coupled device (CCD) demodulation,are used to improve the sensitivity and the serial multiplexing performance of the sensor.At last,a simple comparison test is carried out in the field. Experimental results show that the sensor with the sensitivity of 400pm/g and the natural frequency of 310Hz as a kind of accelerometer with excellent performance can be expected to be better appli ed to the ground monitoring. |
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| Keywords: | sensors accelerometer fiber Bragg grating (FBG) debris flow geosound |
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