Pollution Monitoring Using IOT and GSM Notification System

In this paper, we’ll build an IOT-based air pollution monitoring system that will use the internet to monitor the air quality. An alarm will go off when the air quality drops below a certain point, which happens when there are enough dangerous gases like CO2, smoke, alcohol, benzene, and NH3 in the air. On the LCD and on the website, the air quality will be shown in PPM for easy monitoring. Previously, we constructed an LPG detector using a MQ6 sensor and a smoke detector with a MQ2 sensor. This time, however, we utilised the MQ135 sensor, which is the greatest option for monitoring the Air Quality Index as, it is capable of correctly measuring the level of most dangerous gases and can detect them. With this IOT project, you may use a PC or a mobile device to check the pollution level from anywhere. This system may be installed anywhere, and it can also activate a device to inform the user when pollution levels exceed a certain threshold, such as turning on an exhaust fan or activating a buzzer.