Electronic circuits of measuring modules of air pollution monitoring system based on low-cost sensors

Abstract

Currently, the state system for monitoring atmospheric air pollution in Ukraine is obsolete both in terms of technical and methodological support. In Ukraine, air pollution measurement standards have not been updated for more than 30 years, which led to gradual degradation of the monitoring system. Although relatively new technical means for measuring the concentration of various pollutants are partially used in certain industrial cities, the data they generate do not allow to make a full conclusion about the level of local pollution, the full range of pollutants, the localization of pollution sources, etc. This led to the need to create modern measuring modules of the air pollution monitoring system capable to generate large data sets and solving a number of modern methodological problems of the monitoring system. The hardware complex of the measuring module of the atmospheric air monitoring system based on low-cost sensors has been implemented. It is designed to receive, process, accumulate data, transmit and visualize the necessary information of the air pollution monitoring system. Connection diagrams of various hardware elements of the measuring module of the air pollution monitoring system (STM32F103C8T6 microcontroller, HC-12 module, SIM800C module) are shown. Printed circuit board in Altium Designer CAD, the drawings and the layout of the printed circuit board also are shown. The proposed technical prototype of the measuring modules of the monitoring system can become an addition to an existing monitoring system, or, in the case of creating a large-scale network of such tools, completely replace it.