Open AccessProtótipo de medidor de gases poluentes usando tecnologia de baixo custo
Author(s) -
Igor Alexandre Stefan,
P.I.L. Ferreira,
Aldeni Sudário Sousa
Publication year - 2020
Publication title -
principia/revista principia
Language(s) - English
Resource type - Journals
eISSN - 2447-9187
pISSN - 1517-0306
DOI - 10.18265/1517-03062015v1n49p31-42
Subject(s) - air quality index , arduino , human health , carbon dioxide , carbon monoxide , environmental science , computer science , chemistry , operating system , physics , meteorology , medicine , environmental health , organic chemistry , biochemistry , catalysis
The quality of the air that we breathe is extremely important for human health. When it comes to measuring the concentration of polluting gases, it is common to find very expensive commercial equipment, which does not measure all regulated gases and is not designed for lay people to operate. In this work, a prototype of a meter for carbon monoxide (CO) and carbon dioxide (CO2) gases, which can cause damage to health and to the performance of physical and cognitive activities, was developed. The prototype was developed using the Arduino platform, C ++ programming language resources, electrochemical sensors (MQ-7 and MQ-135) and an OLED display. It shows the concentration of the two gases in units ppm (parts per million) and in conceptual terms (good, bad or terrible). Comparative tests were performed between the readings of the prototype and the values read by commercial meters. Measurements in closed and open environments of the Federal Institute of Paraíba (IFPB), João Pessoa campus, were carried out. The results are promising, since the measurements made are consistent with the situations in which there were or not sources of the gases of interest.