레이저흡수분광법(TDLAS) 기반 가스온도분포 산정을 위한 상호상관계산 알고리듬 개발

최두원; 김광남; 조경래; 심준환; 김동혁; Yoshihiro Deguchi; 도덕희

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자료유형: 학술저널

저자정보: 최두원 김광남 조경래 심준환 김동혁 Yoshihiro Deguchi 도덕희

저널정보: 한국수소및신에너지학회 한국수소및신에너지학회논문집 한국수소 및 신에너지학회 논문집 제27권 제1호

발행연도: 2016.2

수록면: 127 - 134 (8page)

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Most of reconstruction algorithms for the calculation of temperature distributions in CT (computed tomography)-TDLAS (tunable diode laser absorption spectroscopy) are based upon two-line thermometry method. This method gives unstable calculation convergence due to signal noise, bias error, and signal mis-matches. In this study, a new reconstruction algorithm based on cross-correlation for temperature calculation is proposed. The patterns of the optical signals at all wave lengths were used to reconstruct the temperature distribution. Numerical test has been made using phantom temperature distributions. Using these phantom temperature data, absorption spectra for all wave lengths were constructed, and these spectra were regarded as the signals that would be obtained in an actual experiments. Using these virtually generated experimental signals, temperature distribution was once again reconstructed, and was compared with those of the original phantom data. Calculation errors obtained by the newly proposed algorithm were slightly large at high temperatures with small errors at low temperature.

#가상 온도 #레이저흡수분광법 #상호상관 #수치적 시험 #컴퓨터토모그래피 #Cross-Correlation #CT #Numerical Test #Phantom Temperature #TDLAS

참고문헌 (9)

참고문헌 신청

Y. Deguchi / 2011 / Industrial applications of Laser Diagnostics / CRS Press

M. Yamakage / 2008 / Development of direct and fast response exhaust gas measurement

P. Wright / 2010 / High-speed chemical species tomography in a multi-cylinder automotive engine / Journal of Chemical Engineering 158(1):2~10

F. Wang / 2010 / Two-dimensional tomography for gas concentration and temperature distributions based on tunable diode laser absorption spectroscopy / Meas. Sci. Technol 21(045301):10

L. Ma / 2008 / Numerical investigation of hyperspectral tomography for simultaneous temperature and concentration imaging / APPLIED OPTICS 47(21):3751~3759

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