Visual Flame Monitoring System Based on Two-Color Method  

作　　者：Fan Jiang Shi Liu Shiqiang Liang Zhihong Li Xueyao Wang Gang Lu 

机构地区：[1]Key Laboratory of Advanced Energy and Power, Chinese Academy of Sciences (Institute of Engineering Thermophysics), P. O. Box 2706, Beijing 100190, China [2]School of Energy and Power Engineering, North China Electric Power University, Beijing 102206, China [3]Department of Electronics, University of Kent, UK

出　　处：《Journal of Thermal Science》2009年第3期284-288,共5页热科学学报（英文版）

基　　金：the National High Technology Research and Development of China (863 Program) (2006AA05A103);the National Natural Science Fund (grant No. 40501017, grant No. 50706053)

摘　　要：Monitoring and control of combustion flames in utility boilers are required in order to optimize combustion conditions.This paper presents an instrumentation system for the concurrent measurement of the temperature distributionand soot concentration of flames developed on the two-color principle. This system consists of an endoscope,an optical assembly with optical filters, a CCD camera, a frame grabber and associated image processingsoftware. Experiments are performed on a methane-air combustor and the temperature fields and the soot concentrationscorresponding to the flame images are obtained. The results have demonstrated that the system is capableof performing on-line measurement of flame and temperature distribution, providing temporal and spatial characterizationof the combustion process. In addition, the combination of advanced optical sensing and digital imageprocessing technique can help to define the threshold by the analysis of the background noise. Furthermore, theutilization of the filter technique can enhance the image presentation effect to an extent.

关 键 词：Two-color method CCD camera Flame temperature fields Digital image processing 

分 类 号：TK223.6[动力工程及工程热物理—动力机械及工程] TS807[轻工技术与工程]