| 基于匹配解调方法的光纤光栅振动检测技术与实验研究 |
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| 引用本文： | 蒋奇,隋青美.基于匹配解调方法的光纤光栅振动检测技术与实验研究[J].光电技术应用,2007,22(4):42-45. |
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| 作者姓名： | 蒋奇 隋青美 |
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| 作者单位： | 山东大学控制科学与工程学院,山东,济南,250061;山东大学控制科学与工程学院,山东,济南,250061 |
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| 基金项目： | 中国博士后科学基金
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山东省博士择优基金 |
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| 摘 要： | 介绍了光纤光栅振动检测原理及优点,建立了光纤光栅加速度振动检测的力学模型,分析岩土、结构、建筑行业低频微振动监测的单点光栅匹配解调方法,利用反卷积方法进行传感光栅中心波长的解调,并进行了模拟仿真和实验分析,通过对低频振动信号应用匹配光栅解调检测以及对信号频谱分析,得知该技术方法可行,能有效检测低频振动.
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| 关 键 词： | 光纤光栅 振动检测 匹配解调 |
| 文章编号： | 1673-1255（2007）04-0042-04 |
| 收稿时间： | 2007-06-05 |
| 修稿时间： | 2007-06-05 |
Experimental and Technical Study of Fiber Bragg Grating Vibration Detection Based on Matching Demodulation Method |
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| JIANG Qi,SUI Qing-mei.Experimental and Technical Study of Fiber Bragg Grating Vibration Detection Based on Matching Demodulation Method[J].Electro-Optic Technology Application,2007,22(4):42-45. |
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| Authors: | JIANG Qi SUI Qing-mei |
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| Affiliation: | School of Control Science and Engineering Shandong University, Jinan 250061, China |
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| Abstract: | The principle and the advantage of the fiber bragg grating vibration testing are introduced, and its mathematical model of measuring acceleration is established. A scheme of single point matching FBG demodulation is designed and demonstrated to measure low frequency vibration in construction, rock and soil engineering monitoring and so on. The demodulation of FBG detection is simulated and achieved via mathematical method and experiments. Low frequency vibration signal is modulated sine wave signal, which is analyzed through matching demodulation detection and signal spectrum. The experimental results are in agreement with the simulation, which proves that this method can detect low frequency vibration and is feasible. |
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| Keywords: | fiber bragg grating vibration testing matching demodulation |
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