Title :
Robust optical measurement of water vapor in steel-making process
Author :
Park, Haesung ; Jung, Youngjean ; Kim, Kyoungsik ; Bae, Jinsu ; Lee, Jonghak ; Park, Hyoungkuk
Author_Institution :
Dept. of Mech. Eng., Yonsei Univ., Seoul
Abstract :
Based on tunable diode laser spectroscopy (TDLS), we develop a simple and efficient humidity monitoring scheme to improve reliability of measurement under randomly changing transmission condition. This measurement scheme can detect the humidity of a monitored system in either high or low scattering condition such as powder coal fired furnace in steel-making process. Distributed feed-back (DFB) diode laser is used to evaluate the relative and absolute humidity by making direct absorption measurement near 938 nm region where 2nu1 + nu3 water vapor transition band exists. This system gives reliable measurement results under either high or low scattering condition.
Keywords :
condition monitoring; humidity measurement; spectroscopy; steel industry; steel manufacture; absolute humidity; direct absorption measurement; distributed feedback diode laser; humidity monitoring; measurement reliability; powder coal fired furnace; randomly changing transmission condition; relative humidity; robust optical measurement; scattering condition; steel making process; tunable diode laser spectroscopy; water vapor; Absorption; Condition monitoring; Diode lasers; Furnaces; Humidity measurement; Optical scattering; Powders; Robustness; Spectroscopy; Tunable circuits and devices; remote sensing; spectroscopy; water vapor;
Conference_Titel :
Control, Automation and Systems, 2008. ICCAS 2008. International Conference on
Conference_Location :
Seoul
Print_ISBN :
978-89-950038-9-3
Electronic_ISBN :
978-89-93215-01-4
DOI :
10.1109/ICCAS.2008.4694505
