Статья: Мультиспектральная система обнаружения возгорания «ОКБ «Астрон» – технологии и экономика (2020)

To detect foci of ignition and the initial stages of fires, it is necessary to use the detection of open flame, as well as smoke and combustion products. For the detection of open flames with a burning or smoldering temperature of more than 500 °C, the spectral range of electromagnetic radiation of 3–5 microns is used. An open flame with an area of 2 × 2 m in projection in this range is detected automatically at a distance of up to 5 km with Astron-64017D photodetector arrays with a maximum spectral sensitivity of 3–5 microns. The use of bolometric matrices for the spectral range of 7–14 μm with spectral sensitivity at temperatures up to 150 °C is impractical due to poor sensitivity to high temperatures, and their use for the detection of hot smoke and combustion products is less effective in comparison with cameras in the visible range, including cost-effectiveness parameters. The total cost of the complex for a circular review does not exceed 7 million rubles. This budget is possible only with the use of bolometric matrices for a range of 3–5 microns, the use of refrigerated systems to work in this range in the complex would lead to a significant increase in cost, about 10 times.