Development of PM2.5 Dust Meter Using Dust Sensor and Notifying via Application

Abstract

Incineration of agricultural waste has adverse effects on the environment and public health due to the formation of dust and air pollution. In addition, the burning may cause harm to the property of others. This research developed a PM2.5 dust meter by using a dust sensor and notifying via an application. Its function was divided into two parts, a hardware part and a software part. For the hardware part, it was designed to work by using NodeMCU ESP8266 to process signals from dust and smoke sensors while the software part using the Blynk application to display the results in real-time through an in-built control panel displaying values as numbers and graphs in the Blynk application on a smartphone for viewing the amount of PM 2.5 dust, temperature and humidity (DHT22). The prototype development focused on portability, having suitable size for outdoor activities and being cheaper than commercial products. Furthermore, materials used to develop the machine could be obtained from the community and people in the community could build it themselves. When calculating the cost of developing a prototype of PM2.5 dust meter, it was found that the cost was about 450 baht. When testing the measurement of PM2.5 dust content in the air continuously 24 hours a day for 7 days with the developed prototype compared with the standard equipment of the Pollution Control Department installed at Ban Nuea, Muang District, Kanchanaburi Province and a dust detector, Turnkey brand, model Osiris, it was found that the obtained data were similar. The results indicated that the developed prototype could be used to measure dust.