Real-Time Safety Monitoring System In Coal Mines Using IOT

Abstract

Coal mining is one of the most hazardous industrial activities due to the presence of toxic gases, fire accidents, and poor environmental conditions inside underground mines. This paper presents a real-time safety monitoring system for coal mines using Internet of Things (IoT) technology. The proposed system continuously monitors critical environmental parameters such as methane gas, carbon monoxide (CO), smoke, fire, temperature, and humidity using different sensors including MQ2, MQ7, MQ135, flame sensor, and temperature sensors. The collected data is processed using a Raspberry Pi Pico W microcontroller and transmitted wirelessly through IoT technology for remote monitoring. An OLED display is used for local monitoring, while alert notifications are sent to authorized personnel through Telegram notifications whenever abnormal conditions are detected. The system improves miner safety by enabling early detection of hazardous conditions and providing immediate alerts for preventive actions. Experimental results demonstrate that the proposed system efficiently detects unsafe conditions and provides reliable real-time monitoring suitable for underground coal mine applications.