Montagem de protótipo de detector de gases de combustão

Abstract

In view of concerns about air pollution and the damage to health that this pollution can cause, governments follow the recommendations of the World Health Organization to base their rules and resolutions regarding restrictions on concentrations of harmful substances that are discharged into the atmosphere. For an effective inspection, it is necessary to use equipment to measure the concentration of these pollutants, which is still not a full reality in Brazil. Another concern is the monitoring of indoor air quality in closed environments – homes, workplaces, shopping centers, schools and hospitals – where the presence of air pollutants can present concentration levels up to five times higher than in outdoor environments. However, due to acquisition costs and the need for specialized labor for the operation, the use of traditional air quality monitoring equipment becomes unfeasible for monitoring indoors. Therefore, this work aimed to use embedded systems and low-cost technology for the development and assembly of a small air quality monitoring station for indoor environments and to classify the air quality in a closed environment with reference to the legislation current. The following pollutants were monitored: CO, CO2, PM2.5, PM10 and GLP, where it was found that PM2.5 particulates and CO sometimes reached levels higher than the limit proposed by current legislation. The station monitored a closed environment for a period of forty-three days, being easy to use and presenting the results in a simple and intuitive way.