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IoT-Based Air Pollution Monitoring SystemIoT-Based Air Pollution Monitoring System
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Researchers built an affordable, portable device that uses simple sensors to track air pollution—like harmful gases, smoke, and particle levels—in real time, then displays the results so anyone can check the air quality around them. This matters because polluted air (especially in cities like Delhi) is linked to asthma, lung disease, and other breathing problems, so having cheap, accessible monitoring tools could help people make safer choices about when and where to spend time outdoors. It's important to note this paper describes the device's design and setup, not results from testing its accuracy in real-world conditions over time.
Abstract Nowadays, Air pollution is a major health issue for a humans, birds, animals and trees etc. because of plastic waste, vehicles, industry which is harmful for us. These factors have harmful effects on human health for people who are directly exposed to the polluted air. That’s why level of air pollution is increased day by day. So, clean air is important for everyone’s health and safety. However, air quality is getting worse in many cities across India like Delhi, Patna etc. The main cause of pollution is fine particulate matter, which leads to health diseases like asthma, lung diseases and other respiratory problems. There is a need for a low-cost air pollution monitoring system so it can be easily used anywhere. This paper represents a low-cost air pollution monitoring system that uses different sensors to measure the air quality. The MQ2 sensor detects gases like Hydrogen, LPG and Smoke. The MQ135 sensor measure the air quality and the DHT11 sensor is used to measure the temperature and humidity. All these different sensors are connected to an ESP32 microcontroller, which sends the collected data to the cloud. Then the results are shown on LCD display so users can see easily and understand the air quality around them.
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