Forest fires are sudden and random, causing so much damage in short time. So when fire occurs, we should put out fire in a fastest time. Whether the fighting is timely, the decision is appropriate, most importantly, the discovery of forest fire behavior is timely, the analysis is accurate and reasonable. So the mainly two questions to forest fire detection are:
Fire is the phenomenon of object in the air or oxygen burning and generating light and fever, more refers to the burning phenomenon with heat, smoke, flame.
At the beginning of the fire, flame burning showed a unique characteristic that the flame contained ultraviolet and infrared rays of different wavelengths that were indistinguishable by the naked eye.
Infrared imaging technology is based on the detection of the size of the object radiation energy, the system processed into the target body of the thermal image and gray or pseudo-color display, that is, the measured target temperature to determine the state of the object. Forest background temperature is generally 40 ℃- 60 ℃. The combustion flame temperature is generally 600 ℃ – 1200 ℃. The temperature difference between the two, the contrast in the image significantly.
In addition, by image enhancement, image correction, filtering, and so on, we have a clear, real-time image, so the thermal image is easy to separate the combustion from the terrain background. According to the thermal image of the temperature distribution, we can not only produce fire alarm, but also to detect the location of the fire and fire area.
Generally, because of the advantage detection principle, Thermal Camera Forest Fire Detection System are with better application effect and they are able to adapt to fire detection in most of occasion. But in some circumstances, such as low ground , valleys, day camera will be better because of the shelter.
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