Measurement of Exhaust Gas Concentration using Wavelength Modulation Spectroscopy
파장 변조 기법을 이용한 연소배기 가스의 계측
- Published : 2006.10.20
Abstract
This work forcus on the development of gas sensor that measure the concentrations of exhaust gas using diode laser. Each diode laser for exhaust gas measurement is set to work at near-IR using both DA and WMS methods. Also use of fiber-coupled optical elements makes such a sensor rugged and easy to align. On-line data acquisition and processing can be performed with a PC running LabVIEW software, and absorption signals are measured simultaneously by multiplexing method. Finally, It were experimentally compared WMS (Wavelength Modulation Spectroscopy) with DA (Direct Absorption) for the accuracy.
Keywords
- Distributed-Feedback Diode Laser;
- Combustion Diagnostics;
- Direct Absorption;
- Absorption Spectroscopy;
- Tunable Diode Laser Absorption Spectroscopy (TDLAS);
- WMS (Wavelength Modulation Spectroscopy)
- DFB 다이오드 레이저;
- 연소 진단;
- 직접 흡수;
- 흡수 분광학;