The safety of coal mine is an important link in coal mine production, Gas disaster is the most
harmful for the safety of coal mine production. During the process of mine development, it is very
important to measure the gas, temperature and fire concentration in mines to safe the human life.
Based on continuous revolution of coal mining technology, to forward this project about safety
monitoring system of coal mine using Bluetooth technology. A system is designed using group of
sensors which monitors the different environmental condition in underground mines and if value
exceeds from threshold value, then the Miners are informed through buzzer. Another module is
16*2 LCD displays which is used to show the results of sensor condition in project. The system is
flexible in the architecture of software and hardware, and can easily extend to other mine safety
production fields.
Keywords: Sensors, Bluetooth Technology, coal mine, underground mines
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