Temperature demodulation of hot air tube based on wrap-around optical fiber

FANG Ting; OUYANG Qiangqiang; ZHANG Jingqi; LIU Jianqin; HU Xingliu; WANG Yan

doi:10.7510/jgjs.issn.1001-3806.2016.05.027

In order to overcome the following defects of high distance drift rate and poor optical fiber interchangeability when the distributed optical fiber and temperature sensing technology were used in blast furnace hot air tube, two terminal and single channel demodulation method(TTSCDM) was proposed. The decay term Zc was offset after arithmetic average operation for Stokes and anti-Stokes light intensity ratio from both directions. The distance drift rate K of TTSCDM was 0.011 and the maximum Raman ratio deviation of replacing fiber was 0.015. Experimental results show that this demodulation method has low distance drift rate. When optical fiber needs to be replaced, the decay coefficient does not need to recalibrate and the effective measurement of temperature field along the optical path can be implemented.

Temperature demodulation of hot air tube based on wrap-around optical fiber

1. College of Electrical & Information Engineering, Anhui University of Technology, Maanshan 243032, China

Received Date: 2015-05-04

Accepted Date: 2015-07-01

Available Online: 2016-09-25

Abstract: In order to overcome the following defects of high distance drift rate and poor optical fiber interchangeability when the distributed optical fiber and temperature sensing technology were used in blast furnace hot air tube, two terminal and single channel demodulation method(TTSCDM) was proposed. The decay term Zc was offset after arithmetic average operation for Stokes and anti-Stokes light intensity ratio from both directions. The distance drift rate K of TTSCDM was 0.011 and the maximum Raman ratio deviation of replacing fiber was 0.015. Experimental results show that this demodulation method has low distance drift rate. When optical fiber needs to be replaced, the decay coefficient does not need to recalibrate and the effective measurement of temperature field along the optical path can be implemented.

HTML

Reference (15)

[1]	CHEN C,CHENG S,GUO X.Hazard control of NOx in hot stove[J].Journal of Iron and Steel Research,International,2014,21(3):306-311.
[2]	ZHANG F M,QIAN S C,YIN R Y.Blast furnace enlagement and optimization of manufacture process structure of steel plant[J].Iron and Steel,2012,47(7):1-9(in Chinese).
[3]	ZHANG J S,WANG Y Q,CHEN H W,et al.Accident disposal of the bottom burning of hot blast stove for tong steel 7# blast furnace[J].Ironmaking,2012,31(6):56-58(in Chinese).
[4]	ZHANG F,MAO Q,MEI C,et al.Dome combustion hot blast stove for huge blast furnace[J].Journal of Iron and Steel Research International,2012,19(9):1-7.
[5]	LU Y,QIN Z,LU P,et al. Distributed strain and temperature measurement by brillouin beat spectrum[J].IEEE Photonics Technology Letters,2013,25(11):1050-1053.
[6]	ZHOU Z X.Design and optimization of distributed optical fiber temperature sensor[D].Shanghai:Shanghai Jiaotong University,2009:11-27(in Chinese).
[7]	SU H,HU J,YANG M.Dam seepage monitoring based on distributed optical fiber temperature system[J].IEEE Sensors Journal,2014,15(1):9-13.
[8]	ZHAO Y.Optical fiber sensing principle and application[M].Beijing:Tsinghua University Press,2007:168-174(in Chinese).
[9]	ZOU J.Study on key technology of distributed optical fiber temperature sensor system[D].Chongqing:Chongqing University,2005:59-65(in Chinese).
[10]	AMARAL G C,HERRERA L E Y,VITORETI D,et al.WDM-PON monitoring with tunable photon counting OTDR[J].IEEE Photonics Technology Letters,2014,26(13):1279-1282.
[11]	BRAVO M,FERNANDEZ-VALLEJO M,LOPEZ-AMO M.Hybrid OTDR-fiber laser system for remote sensor multiplexing[J].Proceedings of the SPIE,2010,7653:174-178.
[12]	KIM Y,SUNG J,HONG S R,et al.Analyzing OTDR measurement data using the kalman filter[J].IEEE Transactions on Instrumentation and Measurement,2008,57(5):947-951.
[13]	HUI X,ZHOU J,XU C,et al.A real-time detection and self-control phase-sensitive OTDR distributed sensor system[C]//IEEE 201312th International Conference on Optical Communications and Networks (ICOCN).New York,USA:IEEE,2013:1-3.
[14]	SILVA S,PASSOS D J,MARQUES M B,et al. Fiber cavity ring-down for strain sensing using an OTDR[J].Microwave and Optical Technology Letters,2015,57(6):1442-1444.
[15]	URBAN P J,VALL-LLOSERA G,MEDEIROS E,et al.Fiber plant manager:an OTDR-and OTM-based PON monitoring system[J].IEEE Communications Magazine,2013,51(2):S9-S15.

Temperature demodulation of hot air tube based on wrap-around optical fiber

Abstract

References

Proportional views

通讯作者: 陈斌, bchen63@163.com

Proportional views