Research And Design Of On-line Monitoring System For Forest Fire Based On Infrared And DSP

The forest fire is a kind of disaster which happens suddenly and has strongly destructive power.Since it is difficult to be monitored in real time,the research on forest fire monitoring and prevention has been focused at home and abroad all the time.After years of development,the infrared fire detection technology is mature enough and can be used in practical applications.Compared to the traditional ways such as manual work or lookout forest patrol,the application of infrared fire detection technology can no doubt reduce labor intensity and cost.In this thesis,based on the HgCdTe infrared sensor,a set of detecting equipment which can work in the forest was designed,the dector can response quickly to the specific wavelength of infrared signals which are emitted by fire.Based on this characteristic,the DSP hardware circuit is designed.The dector is set to scanning and sampling of the monitoring area continuously.With the wireless transmission module,the dector can communicate with background software,and realize real-time online monitoring.In the design of the monitoring software,the thread pool management technology was adopted,which can manage multiple devices at the same time,In addition,a monitoring web site was designed for remote query.The on-line monitoring system realize a lot of function,such as:generating the scanning image,editing the alarm information automatically,editing the mask area,positioning and marking of the fire location automatically,etc.Through a large number of debugging work and experimental verification,the correctness and reliability of the whole on-line monitoring system have been proved.During the process of system development,the software management method of continuous integration is employed for constructing,testing,deploying the project automatically.which not only accelerates the development schedule,but also avoids the human factor caused error.The whole on-line monitoring system is composed of two parts:hardware and software.It adopts modular design to facilitate the deployment and expansion of the system.After a lot of experiments and tests,it is proved that the system has certain practical value.