Study on Condition Monitoring System of Mine Roof

In order to improve the level of the mine roof condition monitor and trend analysis,the condition monitoring system of mine roof which took AT89C52 as the core was proposed.A unit of data collection was made up of a roof displacement sensor,instrument amplifier and A/D converter,and the collected data can be analyzed and processed by the AT89C52.The system achieved condition remote monitoring of mine roof and field data storage with enormous capacity by frequency-signal remote transmission technology and USB-data storage technology.The device can also provide with other functions,such as dynamic display of field roof condition,acoustic-optical alarm,setting up alarm threshold.The experiment results show that the roof monitoring system is reliable and stable in operation,quick and accurate in data transmission,high in cost performance.