The Research Of Flame Image Detecting System

The combustion status of boiler affects the safety and economy of the power plant. But at present for many reasons the conventional flame detecting can't work properly. The safety and reliability of flame detecting, and the visibility of combustion status are the problems in the power plant that must be solved as soon as possible.The main purpose of the research is to design a flame image detecting system, based upon the characteristic of flame, using digital image processing technique and computer. The system can detect the flame more reliably, and monitor the course of burning at the real time. It also provides the visual information for further research. The main work of the research as follows:1. The structure of the hardware system based upon flame image detecting technique is designed.2. The flame detecting algorithm is put forward according to the characteristic of flame image. As adaptability and failure diagnosis function of the algorithm the problems causing wrong alarm by former flame detecting are resolved and the reliability of the system is higher.3. The formula with more precise is developed on the theory of color and the effects of flame radiation. The visual temperature field is provided for operator.4. The system software is developed. The system can display live flame image and provide other information about the combustion status.5. The system can record flame image that can be examined at any time.As adopting object-oriented programming, the system has a friendly user interface, easy operation and various functions.The system has been gong through the experiments at 200 MW utility boiler in power plant in HeNan, and the results is satisfied.