Analytical study of optical coefficient transmission system "illuminator – slabosolenym environment – receiver»

Abstract

For early diagnosis of fires, optical sensors built on the non-geometrical principle are widely used. When designing such sensors, it is necessary to take into account the peculiarities of light scattering in a smoky environment. The aim of the work was an analytical study of the optical transmission coefficient in the system "illuminator-low - smoke medium - receiver". The methods of theoretical system analysis were used in the work. Theoretical studies of the optical transmission coefficient of the "illuminator-low - smoke medium - receiver"system are carried out. It is established that it depends on the angle of rotation. A smoke meter of this type can be a reliable smoke detector only at such threshold levels that significantly exceed the possible fluctuations in the content of aerosol interference in controlled atmospheres, for example, dust. The theory considered by the authors provides a basis for finding the limits of the resolution of smoke sensors in atmospheres with different degrees of aerosol pollution. The theory is used by the authors to construct an optical scheme of a small-sized highly sensitive smoke meter.