Abstract: Aiming at some practical problems in the process of mining，such as collapse and landsides，a multi-channel acoustic emission real-time monitoring and locating system was designed.The acoustic emission signal from collapse or landsides was amplified and filtered by the lower machine of the system in which MSP430F5336 was used as the central processing unit，in order to make preparation for data transmission.The wireless data radio MDS_SD4 was used to realize the data transmission between the data acquisition unit and the upper monitor.The communication protocol conversion was realized based on the serial server RS485，which is an effective solution to the limitation problem of wiring in field.Based on B/S network structure model，the framework of SSH and Ajax，the system communicate with the lower machine by sending the commands，and the networking make the monitoring more flexible.An threshold method was used to get the time difference and an improved location algorithm was used to make the acoustic emission source location well within the margin of error.Through on-site operation，the system works stably，which provides guarantee for the safety and efficiency of the mine.

Key words: Mine safety, Acoustic emission, Real-time monitor, Serial server, Location