基于DWDM技术的光纤光栅压力测试仪的研究
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摘要
现有的压力测试仪难以适应石油石化等对高等级防爆要求的特殊行业的技术需求,文中采用独立设计的波登管光纤光栅压力传感器与密集型波分复用器(DWDM)解调技术相结合,并与微光探测技术、光电开关技术进行有效集成,同时借助自行开发的信号处理软件,研制出一种完整的全光纤压力测试仪。该测试仪系统集成性强、自动化程度高,压力测试仪的传感器波长调谐灵敏度为0.28 nm/MPa,引用误差为1%。
Existing pressure testers are difficult to meet the technical requirements of special industries requiring high-grade explosion protection,such as petroleum and petrochemical industries.In this paper,an independently designed Boden tube FBG pressure sensor was combined with dense wavelength division multiplexer(DWDM)demodulation technology,and integrated effectively with low light detection technology and photoelectric switch technology.With the help of self developed signal processing software,a complete optical fiber pressure tester was developed.The instrument system has high integration and high degree of automation,the sensor wavelength tuning sensitivity of the pressure tester is 0.28 nm/MPa,and the reference error is 1%.
Existing pressure testers are difficult to meet the technical requirements of special industries requiring high-grade explosion protection,such as petroleum and petrochemical industries.In this paper,an independently designed Boden tube FBG pressure sensor was combined with dense wavelength division multiplexer(DWDM)demodulation technology,and integrated effectively with low light detection technology and photoelectric switch technology.With the help of self developed signal processing software,a complete optical fiber pressure tester was developed.The instrument system has high integration and high degree of automation,the sensor wavelength tuning sensitivity of the pressure tester is 0.28 nm/MPa,and the reference error is 1%.
引文
[1] 袁伟,姜明顺,杨柳,等.光纤光栅传感器在石油测井中应用[J].大气与环境光学学报,2008,3(3):234-240.
[2] 张毅,庄志,黎启胜,等.一种温度补偿式光纤氢气检测技术.仪器仪表学报,2012.33(7):1573-1577.
[3] 张虹.光纤光栅传感系统干涉法信号解调技术研究.仪表技术与传感器,2008(11):20-23.
[4] 吴永红,邵长江,屈文俊,等.光纤光栅应变传感器光-力转换的非线性方程.仪器仪表学报,2010,31(9):194-195.
[5] 杨洋,王宗和,赵志骏.基于滤波器边缘解调技术的光纤光栅压力测试系统.仪表技术与传感器,2008(6):82-84.
[6] 饶云江,王义平,朱涛.光纤光栅原理及应用[M].北京:科学出版社,2006:171-173.
[7] 刘欣,杨洋,刘兵,等.DWDM双边缘解调技术对光纤光栅压力传感器的影响[J].仪表技术与传感器,2016(3):14-16.
[8] 杨洋,刘兵,赵勇,等.DWDM技术在新型波长解调方法中的应用[J].红外与激光工程,2016,45(8):94-100.
[9] 王辉,杨洋,刘兵.基于密集波分复用器的光纤光栅压力传感器解调方法[J].激光与光电子学进展,2016(4):220-226.
[10] 赵亚丽.光开关在光纤光栅压力传感解调系统中的应用[J].电子测试,2016(17):63-64.
[11] LOBOAB,RIBEIRO L,FERREIRA L A,et al.Analysis of the reflective-matched fiber Bragg grating sensing interrogation scheme[J].Appl.Opt.1997.36(4):934-939.
[2] 张毅,庄志,黎启胜,等.一种温度补偿式光纤氢气检测技术.仪器仪表学报,2012.33(7):1573-1577.
[3] 张虹.光纤光栅传感系统干涉法信号解调技术研究.仪表技术与传感器,2008(11):20-23.
[4] 吴永红,邵长江,屈文俊,等.光纤光栅应变传感器光-力转换的非线性方程.仪器仪表学报,2010,31(9):194-195.
[5] 杨洋,王宗和,赵志骏.基于滤波器边缘解调技术的光纤光栅压力测试系统.仪表技术与传感器,2008(6):82-84.
[6] 饶云江,王义平,朱涛.光纤光栅原理及应用[M].北京:科学出版社,2006:171-173.
[7] 刘欣,杨洋,刘兵,等.DWDM双边缘解调技术对光纤光栅压力传感器的影响[J].仪表技术与传感器,2016(3):14-16.
[8] 杨洋,刘兵,赵勇,等.DWDM技术在新型波长解调方法中的应用[J].红外与激光工程,2016,45(8):94-100.
[9] 王辉,杨洋,刘兵.基于密集波分复用器的光纤光栅压力传感器解调方法[J].激光与光电子学进展,2016(4):220-226.
[10] 赵亚丽.光开关在光纤光栅压力传感解调系统中的应用[J].电子测试,2016(17):63-64.
[11] LOBOAB,RIBEIRO L,FERREIRA L A,et al.Analysis of the reflective-matched fiber Bragg grating sensing interrogation scheme[J].Appl.Opt.1997.36(4):934-939.