Mine monitoring alarm system based on Internet of Things

The invention discloses a mine monitoring alarm system based on Internet of Things, which comprises a base, a cylinder, a signal processing unit and a monitoring alarm unit, the cylinder is arranged on the base, a light emitter and a light receiver which are arranged at the top end are arranged in the cylinder, a water inlet is formed in the cylinder wall of the bottom end, and a water outlet is formed in the cylinder wall of the bottom end. A buoyancy piece located at the bottom end is arranged in the barrel body and can move in the axial direction of the barrel body, a reflecting mirror is arranged at the top of the buoyancy piece, the signal processing unit is used for obtaining the water level height in the barrel body and transmitting the water level height to the monitoring alarm unit, and when the water level height in the barrel body exceeds a preset value, the monitoring alarm unit gives an alarm. And the monitoring alarm unit sends out an alarm signal. According to the mine monitoring and alarming s