基于FBG的光纤超声检测系统
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摘要
研制了一种基于光纤FBG光栅和PID控制技术的超声光纤检测系统。该系统通过锁定可调激光器波长和FBG光栅反射波长的相对位置来滤除低频信号,被测物体激发的超声波引起FBG光栅波长反射输出功率的变化,光电探测器探测到该变化并显示,同时通过PID控制电路反馈调节可调激光器的波长输出用于保持FBG光栅的反射波长。实验表明,该系统可实时检测被测物体受激发产生的超声信号。
We developed an optical fibre ultrasonic measurement system based on FBG and PID controller. This system can filter low- frequency signals by locking the relative position of FBG reflection wavelength as well as tunable laser wavelength. Ultrasonic- wave generated on the measured object causes a change in the output optical power of FBG wavelength reflected. A photodetector would detect the change of optical power,a proportional- integral- derivative( PID) controller continuously controls the tunable laser wavelength that is kept at the FBG reflection wavelength simultaneously. Experiments showed that this system could detect the generated ultrasonic- wave signal,and meet the requirement of real- time monitoring.
We developed an optical fibre ultrasonic measurement system based on FBG and PID controller. This system can filter low- frequency signals by locking the relative position of FBG reflection wavelength as well as tunable laser wavelength. Ultrasonic- wave generated on the measured object causes a change in the output optical power of FBG wavelength reflected. A photodetector would detect the change of optical power,a proportional- integral- derivative( PID) controller continuously controls the tunable laser wavelength that is kept at the FBG reflection wavelength simultaneously. Experiments showed that this system could detect the generated ultrasonic- wave signal,and meet the requirement of real- time monitoring.
引文
[1]黄欣.旋转叶轮轴向力的FBG检测方法与实验研究[D].武汉:武汉理工大学,2013.
[2]赵勇.光纤光栅及其传感技术[M].北京:国防工业出版社,2007.
[3]孟丽君.超声激励-光纤光栅传感器检测技术的相关理论与应用研究[D].武汉:武汉理工大学,2013.
[4]Yinian Zhu,Sridhar Krishnaswamy.Dynamic fiber Bragg grating strain sensor using a wavelength-locked tunable fiber ring laser[J].Proc.SPIE 8348,Health Monitoring of Structural and Biological Systems,2012,83482H.
[5]田石柱,曹长城,王大鹏.光纤光栅传感器监测混凝土简支梁裂缝的实验研究[J].中国激光,2013,40(1):218-222.
[6]姜德生,梁磊,周雪芳,南秋明.FBG传感技术在工程结构检测中的应用[J].传感器技术,2003,22(6):33-38.
[7]瞿伟廉,姜德生,袁润章.智能材料结构系统在土木工程中的应用[J].地震工程与工程振动,1999,19(3):42-46.
[8]李川,张以谟,赵永贵等.光纤光栅:原理、技术与传感应用[M].北京:科学出版社,2005.
[9]吴朝霞,吴飞.光纤光栅传感原理及应用[M].北京:国防工业出版社,2011.
[10]李晓龙,李川,王达达,等.FBG传感技术在云南山地高压变电站及输变电设备在线监测中的应用研究[J].高压电器,2013,49(3):36-44.
[11]Morey W W,Meltz G and Glenn W H.Fibre optic Bragg grating sensors[J].Proc.SPIE 1169,1989,98.
[12]Davis M A,Kersey A D,Berk off TA,et al.Dynamic strain monitoring of anin-use interstate bridge using fiber Braggg rating sensors[J].SPIE 3043,1997,87.
[13]鲍吉龙,章献民,陈抗生,等.FBG传感网络技术研究[J].光通信技术,2001(2):84-89.
[14]姜德生.智能材料与结构、器件[M].武汉:武汉工业大学出版社,2000.
[15]张自嘉.光纤光栅理论基础与传感技术[M].北京:科学出版社,2009.
[16]江毅.高级光纤传感技术[M].北京:科学出版社.2009.
[17]王月明.光纤光栅产业化技术研究及应用[D].武汉:武汉理工大学,2009.
[18]龚天森,仝芳轩.基于光纤光栅传感器高压开关柜温度监测系统设计[J].激光杂志,2014,35(9):89-91.
[2]赵勇.光纤光栅及其传感技术[M].北京:国防工业出版社,2007.
[3]孟丽君.超声激励-光纤光栅传感器检测技术的相关理论与应用研究[D].武汉:武汉理工大学,2013.
[4]Yinian Zhu,Sridhar Krishnaswamy.Dynamic fiber Bragg grating strain sensor using a wavelength-locked tunable fiber ring laser[J].Proc.SPIE 8348,Health Monitoring of Structural and Biological Systems,2012,83482H.
[5]田石柱,曹长城,王大鹏.光纤光栅传感器监测混凝土简支梁裂缝的实验研究[J].中国激光,2013,40(1):218-222.
[6]姜德生,梁磊,周雪芳,南秋明.FBG传感技术在工程结构检测中的应用[J].传感器技术,2003,22(6):33-38.
[7]瞿伟廉,姜德生,袁润章.智能材料结构系统在土木工程中的应用[J].地震工程与工程振动,1999,19(3):42-46.
[8]李川,张以谟,赵永贵等.光纤光栅:原理、技术与传感应用[M].北京:科学出版社,2005.
[9]吴朝霞,吴飞.光纤光栅传感原理及应用[M].北京:国防工业出版社,2011.
[10]李晓龙,李川,王达达,等.FBG传感技术在云南山地高压变电站及输变电设备在线监测中的应用研究[J].高压电器,2013,49(3):36-44.
[11]Morey W W,Meltz G and Glenn W H.Fibre optic Bragg grating sensors[J].Proc.SPIE 1169,1989,98.
[12]Davis M A,Kersey A D,Berk off TA,et al.Dynamic strain monitoring of anin-use interstate bridge using fiber Braggg rating sensors[J].SPIE 3043,1997,87.
[13]鲍吉龙,章献民,陈抗生,等.FBG传感网络技术研究[J].光通信技术,2001(2):84-89.
[14]姜德生.智能材料与结构、器件[M].武汉:武汉工业大学出版社,2000.
[15]张自嘉.光纤光栅理论基础与传感技术[M].北京:科学出版社,2009.
[16]江毅.高级光纤传感技术[M].北京:科学出版社.2009.
[17]王月明.光纤光栅产业化技术研究及应用[D].武汉:武汉理工大学,2009.
[18]龚天森,仝芳轩.基于光纤光栅传感器高压开关柜温度监测系统设计[J].激光杂志,2014,35(9):89-91.
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