Design Of The Safety Monitoring System For Blasting In Coal Mine

Coal is one of the important resources in China. Due to geographical reasons,most of coal mining in our country using downhole blasting. Blasting implementation, must ensure the safety of the mine personnel and equipment, it need a safty monitoring of downhole blasting area, so the design of the coal mine safety monitoring system, it ensure the safety of coal mine implemented blasting mining and has great significance to realize intelligent monitoring of downhole blasting area.Blasting in coal mine safety monitoring system is presented in this paper the research status and development trend at home and abroad on the basis of the analysis summary, combining with the system requirements, the coal mine production safety monitoring system is designed. This system mainly realize real-time monitoring of underground blasting area personnel; Of downhole blasting area concentration of combustible gas detection; The downhole detected data information transmitted to the monitoring station and uploaded to the monitoring center inoue. This system implementation "the three chain" blasting system, namely, team leader, downhole safety personnel and demolition blasting,three chain to ensure the safety of undergroundThis system mainly including underground personnel positioning module,combustible gas detection module, underground base station module and CAN-Ethernet module. Personnel positioning module adopts radio frequency identification technology, implementation of underground personnel real-time positioning, make different confirmation signal from blasting in the blasting area when no personnel. Combustible gas detection module uses the gas detection technology, real-time detection of underground combustible gas, will be compared with the standard concentration of gas concentration data collected, if overweight that trigger the acousto-optic alarm device. Underground stationsusing STM32 chips as the main control chip, the acquisition of personnel location information and gas concentration index for processing and display. System adopting CAN turn Ethernet module CAN bus and Ethernet connection, complete underground to inoue data transmission. Downhole conditions, the use of strong anti-interference performance of CAN bus as the communication network; To the distance, inoue underground use industrial Ethernet for long-distance transmission. System communication part through the simulation test, to meet the design requirements.