Research And Design Of Hydrological Monitoring System Of Coal Mine

Water damage is one of the major coal-mine disaster, a serious threat to the safety of coal-mine production, and its manifestations is a sudden increase in mine water drainage capacity that beyond its own drainage system, so the underground water’ inflow point and its flow is a very important job. Currently, the mine through a way of artificial hydrological monitoring in general period observation with a point-to-point measurement, and the difficult to achieve is to obtain while inflow each measuring point to analysis, because water rush occurs when there is not timely discovery. In addition, water storage level, downhole drilling pressure, ground water and other drilling parameter is also very important. Though the manual measurement is still widely used, it is very necessary to establish the mine hydrology automatic monitoring and alarm systems.The system uses advanced sensor technology and data communications technology, with industrial Ethernet,CAN network and GPRS network as platform to build a mine that has a high precision, real-time, reliable operation, high automation mine. It can measure and use computer analysis,support decision in a continuous, and it can apply a variety of surface and underground hydrological parameters(water lever, water pressure, pipe flow, open channel flow, etc.) and use the LAN data transmission hydrological monitoring system, and master the groundwater dynamics to ensure mine safety and regularity production.This design breaks traditional manual recording, manually check, paper preservation and etc. to achieve an efficient, fast and intelligent data acquisition program. Mullti-lever structure of the hydrological monitoring system in hardware design and web design. In hardware, it involves collection terminal(mobile collection terminal), underground communications sub-station and ground communications sub-station. In network, it uses the two-lever network communication mechanisms that contain high-lever and low-lever CAN Ethernet and GPRS networks. Collection terminals and mobile collection terminal is the end of the network.Firstly, we give a brief introduction of the principle technology and its development of hydrological monitoring system status and the design. And analyze the structure of the entire hydrological monitoring system, including hardware-based systems, the network topology and software architecture. Secondly, give the detailed design of the system hardware circuit and introduce each module, such as a micro-controller circuit module, MG2639(GPRS) module, CAN communication module and AD analog signal acquisition module circuit design, functions and use the settings, etc. And then it analyzes the network topology and network protocol design system, focusing on the CAN bus protocol used in the design and CAN communication protocol design situations. Then introduce the system software design, including hardware layer, driver layer, system layer and application layer, and give a detailed coordination of the various layers of software workflow workflow and between the layers. Finally, in the introduction to the overall system design, software and hardware in system for the operation carried out on-line debugging, and analysis of the system after power operating conditions.