Building an indoor air quality monitoring system based on the architecture of the Internet of Things

Wen-Tsai Sung,Sung-Jung Hsiao

doi:10.1186/s13638-021-02030-1

Abstract

With rapidly changing technology, people have more and more requirements for thermal comforts regarding indoor temperature, humidity, and wind speed, and pay more attention to air quality. Indoor air quality has serious effects on the elderly, children, and those with respiratory allergies. Based on the architecture of the Internet of Things smart home, this study constructed an indoor air quality monitoring system to explore how people can live in an environment with good air quality. Among the numerous air quality indices (AQIs), the carbon dioxide index and AQI of the American Society of Heating, Refrigerating and Air-Conditioning Engineers are selected as the indices suitable for this study. The common points of the two indices are combined, and then, based on the data of the Environmental Protection Administration, indoor and outdoor environmental parameters are analyzed, and controllable environment variables are simulated to analyze their effects on air quality. This study designed effective load control using fuzzy control and developed a fuzzy rule base for simulation of the environment variables. Decision logic was used to replace the threshold control of indoor air quality in the past, and a comfortable air quality monitoring system was designed by combining the Arduino Uno development board and ESP8266 Wi-Fi wireless transmission modules.

Highlights

Technology is changing rapidly, from the old slide phones to today’s smart phones, tablet computers, and even artificial intelligence, it is not difficult to find that technology is gradually affecting our surroundings and making us increasingly dependent on technology products
The indoor environment was analyzed by MATLAB simulation, fuzzy control was applied to the data of fine particulate matters and Carbon dioxide (CO2) in the indoor environment, and a logic base was established based on the Air Quality Index (AQI) data for better air quality in homes
The purpose of this study was to improve the living quality in all residences and maintain good indoor air quality, in order that children and people with allergies are less likely to suffer from asthma and respiratory problems due to poor air quality, and people are less likely to have reduced office efficiency and fall asleep because of high CO2 concentrations, creating good air quality environments for the public

Summary

Introduction

Technology is changing rapidly, from the old slide phones to today’s smart phones, tablet computers, and even artificial intelligence, it is not difficult to find that technology is gradually affecting our surroundings and making us increasingly dependent on technology products. The technological advancements have led to deterioration of our living environment, and various problems, such as air pollution, smog, and PM2.5 (particulate matters with a diameter of 2.5 μm or less) have gradually emerged. Poor air quality has caused respiratory problems to many newborns and many smog-themed disaster films have been shot, which seem to reflect the problems the world must face. There are 3 effects of smog: Sung and Hsiao J Wireless Com Network (2021) 2021:153

Smog’s effects on the human body

Smog’s effects on the economy

Literature review

Simulation and experiment

Findings

Conclusions