Application of Fiber Optic BOTDA Sensor for Fire Detection in a Building

Abstract:

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Smart structures are to be possessed many functions to sense the external effects, such as seismic loads, temperature, and impact by some explosion, influenced on the safety of structures. This work was focused on the development of a sensing function of smart structures to get the temperature distribution on structures to detect fire occurrences. A fiber optic BOTDA (Brillouin Optical Time Domain Analysis) sensor system was developed to detect the fire occurrence by measuring the temperature distribution of a building’s exterior surfaces. This fiber optic sensor system was constructed with a laser diode and two electro-optic modulators, which made this system faster than systems using only one electro-optic modulator. The temperature distributed on an optical fiber can be measured by this fiber optic BOTDA sensor. An optical fiber, 1400 m in length, was installed on the surface of a building. Using real-time processing of the sensor system, we were able to monitor temperature distribution on the building’s surfaces, and changes in temperature distribution were also measured accurately with this fiber optic sensor.

Info:

Periodical:

Key Engineering Materials (Volumes 321-323)

Edited by:

Seung-Seok Lee, Joon Hyun Lee, Ik Keun Park, Sung-Jin Song, Man Yong Choi

Pages:

212-216

DOI:

10.4028/www.scientific.net/KEM.321-323.212

Citation:

I. B. Kwon et al., "Application of Fiber Optic BOTDA Sensor for Fire Detection in a Building ", Key Engineering Materials, Vols. 321-323, pp. 212-216, 2006

Online since:

October 2006

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Price:

$35.00

[1] R. O. Claus, J. C. Mckeeman, R. G. May, and K. D. Bennet, Optical Fiber Sensors and Signal Processing for Smart Materials and Structures Applications, Proc. of ARO Smart Materials, Structures and Mathematical Issues Workshop, pp.29-38, (1988).

[2] M. Nickles, L. Thevenaz, and P. Robert, Simple distributed fiber sensor based on Brillouin gain spectrum analysis, Optics Letters, Vol. 21, No. 10 758-760, (1996).

DOI: 10.1364/ol.21.000758

[3] V. Lecoeuche, D. J. Webb, C. N. Pannel, and D. A. Jackson, Brillouin Based Distributed Fiber Sensor Incorporating a Mode-locked Brillouin Fiber Ring Laser, Optics Communications, Vol. 152, 263-268, (1988).

DOI: 10.1016/s0030-4018(98)00187-4

[4] L. Thevenaz, M. Facchini, A. Fellay, P. Robert, Monitoring of large structure using distributed Brillouin scattering fiber sensing, OFS 13, pp.345-348, (1999).

DOI: 10.1364/ofs.1997.owd3

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