Air Quality and Carbon Monoxide Monitoring Using IOT-based System

Abstract

The humans utilize around 95% of indoor air and air quality monitoring is essential for maintaining healthy environment. The Internet of Things (IoT) contributes to facilitate smart and safe lifestyle. The pollution monitoring is essential to avoid exposure to dust particles and harmful gases and minimize its impact on the surrounding environment. The paper presents an effective Air Quality Monitoring System (AQMS) to evaluate temperature, humidity and concentration of gasses like Carbon Dioxide (CO2), Carbon Monoxide (CO) respectively. It consists of Microcontroller (NodeMCU ESP32), Temperature and humidity sensor (DHT-11), Carbon Dioxide sensor (MQ-135), and Carbon Monoxide (MQ-7). Sensors fetch the environmental data and transmit to the Microcontroller (NodeMCU). The microcontroller generates alert for breach in normal concentration of environmental parameters. Moreover, the system is capable to open doors and windows through the servo motor. The model is capable to send information through a wireless link to blynk application. The Test-Driven Development Methodology for Internet of Things-based Systems (TDDMIoTS) and the technologies used to automate the creation of Internet of Things systems have simplified the monitoring mechanism. This system is easy to install in houses, industries and vehicles for protection of humans working as well as living in indoor and outdoor places.