Open AccessDesign and Implementation of an Air Quality Testing System Based on STC12C5A
Author(s) -
Fenglong Wu,
Liu Fang-mei,
Feng Yuan,
Zengyu Cai
Publication year - 2021
Publication title -
international journal of circuits, systems and signal processing
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.156
H-Index - 13
ISSN - 1998-4464
DOI - 10.46300/9106.2021.15.110
Subject(s) - microcontroller , relative humidity , air quality index , indoor air quality , particulates , environmental science , approximation error , humidity , automotive engineering , air pollution , computer science , environmental engineering , embedded system , engineering , meteorology , ecology , physics , organic chemistry , algorithm , biology , chemistry
Indoor air quality and human health have proven to be related, but for home environment air quality detection system equipment accuracy is not high problem. This paper designs an air quality detection system that effectively handles the information of indoor air pollution. The microcontroller unit (MCU) STC12C5A was taken as the core to realize the detection and display of particulate matter (PM) 2.5 concentration, temperature, and humidity. Compared with the measurements by standard instruments, our system was proved effective through tests: the relative error of PM2.5 concentration was smaller than 3μg/m3; the temperature error was within 1℃; the humidity error was below 5% relative humidity (RH). This research provides an effective way to detect indoor air quality. The results of this paper are suitable for home environment and have a good application prospect.