Remote safety monitoring system of air shaft in coal mine

A remote safety monitoring system of an air shaft in a coal mine comprises a plurality of monitoring substations on site of the air shaft and a monitoring master station arranged in a monitoring center on the shaft. The monitoring substations are communicated with the monitoring master station through a general packet radio service (GPRS) network. Each monitoring substation comprises detection devices which are used for collecting operating parameters of draught fans in real time and forming environmental parameter signals. The detection devices enable the detected signals to be connected with a single chip microcomputer (SCM) through an analog/digital (A/D) converter. The SCM is in interactive connection with a first GPRS module. The monitoring master station comprises a server which is communicated with the first GPRS module through a second GPRS module. The GPRS network system selected according to specific distribution of the draught fans and the environment of the coal mine is capable of reliably achievi