Journal of the Korean Institute of Illuminating and Electrical Installation Engineers (조명전기설비학회논문지)

The Korean Institute of IIIuminating and Electrical Installation Engineers (한국조명전기설비학회)
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The Accuracy Improvement of FBG Temperature Sensor by using Wavelet Transform

웨이블릿 변환을 이용한 광섬유 격자 온도센서의 정밀도 개선

  • 조요한 (전북대학교 전자정보공학부) ;
  • 김현진 (전북대학교 전자정보공학부) ;
  • 송민호 (전북대학교 전자정보공학부)
  • Received : 2011.02.15
  • Accepted : 2011.04.18
  • Published : 2011.05.31
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Abstract

We developed a noise reduction algorithm for the measurement accuracy improvement of a fiber-optic distributed temperaure sensor system. The denoising technique is based on the wavelet transform. The proposed algorithm was applied to a FBG sensor output with the Gaussian line-fitting algorithm to minimize the output noise which originated from the intensity noise of the laser light source and the instability of signal porcessing. We confirmed the feasibility of the denoising algorithm by comparing the measurement results with those obtained with the Gaussian line-fitting algorithm only.

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References

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