The Optical Subsystem for the Portable Dust Concentration Measuring System

Air pollution is one of the main threats to human health. Within the national project “Ecology,” the Ministry of Natural Resources of Russia and Rosprirodnadzor develop modern air quality monitoring technologies and reduce enterprises' atmospheric emissions. This project aims to reach the 90% satisfaction of industrial centers residents with air quality. The most complex branch of the national project “Ecology” is “Clean Air.” We propose the portable dust concentration measuring system, which helps perform air quality monitoring in a “coarse-fine” manner. The coarse air quality estimation results allow PM2.5 and PM10 source localization and can be used for the “fine” monitoring system's accurate placement justification. The primary approach is to use compact energy-efficient equipment and fast optical methods of object recognition to check the air quality anywhere within the enterprise territory the specialist could pass. The optical system consists of two microscopic lenses paired with cameras and the decision-making system, which performs image pre-processing and particle recognition to identify hazardous particles by visual cues such as texture, shape, and size.