| 基于光纤光栅PGCD的材料冲击试验研究 |
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| 引用本文： | 李丽,林玉池,王为,朱萍玉,黄银国.基于光纤光栅PGCD的材料冲击试验研究[J].传感器与微系统,2007,26(8):55-57. |
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| 作者姓名： | 李丽 林玉池 王为 朱萍玉 黄银国 |
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| 作者单位： | 1. 天津大学,精密测试技术及仪器国家重点试验室,天津,300072;天津理工大学,自动化与能源工程学院,天津,300191
2. 天津大学,精密测试技术及仪器国家重点试验室,天津,300072 |
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| 基金项目： | 高等学校博士学科点专项科研项目 |
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| 摘 要： | 光纤光栅抗电磁干扰和易于构成分布式光纤传感网络,对设备健康监测和高频应力作用下的材料力学性能测试具有独特优势。波长编码信号解调系统的频率低是制约光纤光栅传感器在高频信号环境下使用的关键问题之一,采用M-Z干涉技术,设计了一套基于相位载波(PGC)的相位解调方法的光纤光栅高频解调系统,对正弦信号激励和冲击试验产生的信号进行了测试和分析,取得了比较理想的试验结果,实现了10 kHz频率范围内高频信号的检测。
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| 关 键 词： | 光纤Bragg光栅 相位载波解调 M-Z干涉技术 高频解调 冲击 |
| 文章编号： | 1000-9787（2007）08-0055-03 |
| 修稿时间： | 2007-01-11 |
Research on material impacting based on PGCD with fiber Bragg grating |
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| LI Li,LIN Yu-chi,WANG Wei,ZHU Ping-yu,HUANG Yin-guo.Research on material impacting based on PGCD with fiber Bragg grating[J].Transducer and Microsystem Technology,2007,26(8):55-57. |
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| Authors: | LI Li LIN Yu-chi WANG Wei ZHU Ping-yu HUANG Yin-guo |
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| Affiliation: | 1. State Key Laboratory of Precision Measuring Technology and Instruments, Tianjin University, Tianjin 300072, China; 2. School of Automation and Energy, Tianjin University of Technology, Tianjin 300191, China |
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| Abstract: | The unique merits of fiber Bragg grating,such as it is immune to electromagnetic field and easy to constitute a distributed sensors network,are effectively used for equipment health monitoring and testing mechanical characteristics of materials under high frequency stress load.The frequency of wavelength encoded signal demodulation is one of the key problems that limit the use of fiber Bragg grating sensor in high frequency signal environment.Mach-Zehnder interference technology is adopted to design a high-frequency demodulation system for fiber Bragg grating,which bases on phase generated carrier demodulation(PGCD).With this designed demodulation system,the signals produced by sinusoidal stimulating and impact setup are measured.The experimental results are satisfied.The measurement of 10 kHz frequency is achieved. |
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| Keywords: | fiber Bragg grating(FBG) phase generated carrier demodulation(PGCD) unbalanced M-Z interferometer high frequency demodulation impact |
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