| 光纤分布式扰动传感器信号检测系统研究 |
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| 引用本文： | 尚静,杨德伟,李立京,梁正桃.光纤分布式扰动传感器信号检测系统研究[J].电子技术应用,2012,38(11):28-30. |
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| 作者姓名： | 尚静 杨德伟 李立京 梁正桃 |
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| 作者单位： | 北京航空航天大学 仪器科学与光电工程学院,北京,100191 |
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| 摘 要： | 设计了一种以FPGA作为数据处理核心,基于相位敏感光时域反射计(Φ-OTDR)的光纤分布式扰动传感器信号检测系统。该系统具有数据采集、处理、存储、通信以及液晶显示功能。扰动信号检测算法采用多周期等距累加相减法。通过阈值判定实现扰动信号的判别,并可以同时显示传感光纤长度范围内不同位置的扰动。实验证明,该系统内部数字处理部分可以实现信号检测算法以及扰动阈值判定功能。
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| 关 键 词： | FPGA 扰动信号检测 分布式光纤传感 相位敏感光时域反射计 |
Research of signal detecting system on distributed optical fiber disturbance sensor |
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| Shang Jing
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Yang Dewei
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Li Lijing
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Liang Zhengtao.Research of signal detecting system on distributed optical fiber disturbance sensor[J].Application of Electronic Technique,2012,38(11):28-30. |
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| Authors: | Shang Jing Yang Dewei Li Lijing Liang Zhengtao |
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| Affiliation: | (School of Instrument Science and Opto-electronics Engineering,Beijing University of Aeronautics and Astronautics, Beijing 100191,China) |
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| Abstract: | A signal detecting system is designed for the distributed optical fiber disturbance sensor based on phase-sensitive optical time-domain reflectometer(Φ-OTDR).It uses FPGA for its data processing core.Main functions of the system include data acquisition,data processing,storage,communication and display.The disturbance sensing signal is obtained from several periods of accumulating and subtracting,and recognized by threshold estimating.The system also can display disturbances along the sensing fiber simultaneously.The functional experiment proves that the above-mentioned algorithm and threshold estimating function can be actualized in the system. |
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| Keywords: | FPGA vibration signal detecting distributed optical fiber sensing phase-sensitive optical time-domain reflectometer |
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