Proceedings of the Computational Structural Engineering Institute Conference (한국전산구조공학회:학술대회논문집)

Computational Structural Engineering Institute of Korea (한국전산구조공학회)
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Application of fiber optic BOTDA sensor for measuring the temperature distributed on the surfaces of a building

빌딩표면에 분포된 온도를 측정하기 위한 광섬유 BOTDA센서의 적용

  • Kwon, Il-Bum (Nondestructive Measurement Group, Division of Industrial Metrology, Korea Research Institute of Standards and Science) ;
  • Kim, Chi-Yeop (Nondestructive Measurement Group, Division of Industrial Metrology, Korea Research Institute of Standards and Scienc) ;
  • Park, Man-Yong (Nondestructive Measurement Group, Division of Industrial Metrology, Korea Research Institute of Standards and Science)
  • Published : 2002.10.01
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Abstract

We have focused on the development of a fiber optic BOTDA (Brillouin Optical Time Domain Analysis) sensor system in order to measure temperature distributed on large structures. Also, we present a feasibility study of the fiber optic sensor to monitor the distributed temperature on a building construction. A fiber optic BOTDA sensor system, which has a capability of measuring the temperature distribution, attempted over several kilometers of long fiber paths. This simple fiber optic sensor system employs a laser diode and two electro-optic modulators. The optical fiber of the length of 1400 m was installed on the surfaces of the building. The change of the distributed temperature on the building construction was well measured by this fiber optic sensor. The temperature changed normally up to 4℃ through one day.

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