光纤Bragg光栅传感监测解调系统设计
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摘要
采用波分和空分混合复用技术和LabVIEW,设计了一种可通过单片机控制的光纤Bragg光栅(FBG)传感监测解调系统,实现了温度和应变的实时监测。实验研究表明,在20～100℃范围内,温度监测平均误差0.3℃,标准差0.163℃,实验灵敏度与标定灵敏度之间的灵敏度误差为0.29%;在0～390με应变范围内,应变监测平均误差2.79με,标准差2.63με,悬臂梁上下FBG实验灵敏度与标定灵敏度之间的灵敏度误差分别为0.10%、0.19%。该解调系统实现了高灵活性、高精度的温度和应变监测。
A fiber Bragg grating(FBG)sensor monitoring and demodulation system controlled by SCM is designed by using WDM and space division multiplexing technology and LabVIEW,and the real-time monitoring of temperature and strain is realized.The experimental results show that the average error of temperature monitoring is 0.3℃,the standard deviation is 0.163℃in the range of 20℃ to 100℃,and the sensitivity error between the experimental sensitivity and the calibration sensitivity is 0.29%.In the range of 0to 390 strain,the average error of the strain monitoring is 2.79μεand the standard deviation is 2.63με.The sensitivity errors between the sensitivity of FBG experiment and the calibration sensitivity of cantilever beam are 0.10% and 0.19%respectively.This demodulation system realizes the temperature and strain monitoring with high flexibility and high precision.
A fiber Bragg grating(FBG)sensor monitoring and demodulation system controlled by SCM is designed by using WDM and space division multiplexing technology and LabVIEW,and the real-time monitoring of temperature and strain is realized.The experimental results show that the average error of temperature monitoring is 0.3℃,the standard deviation is 0.163℃in the range of 20℃ to 100℃,and the sensitivity error between the experimental sensitivity and the calibration sensitivity is 0.29%.In the range of 0to 390 strain,the average error of the strain monitoring is 2.79μεand the standard deviation is 2.63με.The sensitivity errors between the sensitivity of FBG experiment and the calibration sensitivity of cantilever beam are 0.10% and 0.19%respectively.This demodulation system realizes the temperature and strain monitoring with high flexibility and high precision.
引文
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[11]张勇军,赵振刚,许俊飞,等.结合波分复用和空分复用的光纤光栅串口总线式检测系统[J].光学技术,2015,41(3):233-237.
[12]苑立波,ANSARI F.光纤光栅原理与应用(一):光纤光栅原理[J].光通信技术,1998(1):70-78.
[13]王目光,魏淮,童治,等.利用双周期光纤光栅实现应变和温度同时测量[J].光学学报,2002(7):867-869.
[2] ZHANG S J,LIU Y M.Fabrication of FBG strain gauge used for high temperature strain monitoring[J].Applied Mechanics and Materials,2014,668-669:920-923.
[3]曹晔,刘波,开桂云,等.光纤光栅传感技术研究现状及发展前景[J].传感器技术,2005(12):1-4.
[4]姜德生,何伟.光纤光栅传感器的应用概况[J].光电子·激光,2002(4):420-430.
[5] RAO Y J,RIBEIRO A B L,JACKSON D A,et al.In-fiber grating sensing network with a combined SDM,TDM,and WDM topology[C]//Conference on Lasers and Electro-Optics.Cleos,1996:244.
[6] MAHMOODI M,JAMES L A,JOHANSEN T.Automated advanced image processing for micromodel flow experiments;an application using LabVIEW[J].Journal of Petroleum Science and Engineering,2018,167(8):829-843
[7]薛得凤.基于图形化编程语言Labview的一种虚拟仪器的实现[J].自动化与仪器仪表,2003(5):24-26.
[8]周勤峰,徐铁峰.基于串口的光纤光栅解调仪多通道扩展电路设计[J].宁波大学学报(理工版),2007,20(3):285-288.
[9]陶珺,穆磊,杜平.基于InGaAs光谱成像技术的光纤光栅传感器在大坝渗流监测系统的应用[J].光子学报,2010,39(1):42-45.
[10]胡辽林,张卫超,华灯鑫,等.基于LabVIEW的光纤光栅传感的动态解调[J].计算应用,2013,33(5):1473-1475.
[11]张勇军,赵振刚,许俊飞,等.结合波分复用和空分复用的光纤光栅串口总线式检测系统[J].光学技术,2015,41(3):233-237.
[12]苑立波,ANSARI F.光纤光栅原理与应用(一):光纤光栅原理[J].光通信技术,1998(1):70-78.
[13]王目光,魏淮,童治,等.利用双周期光纤光栅实现应变和温度同时测量[J].光学学报,2002(7):867-869.