Iron Ore, Metallurgical Performance Monitoring And Control Network Systems

In the situation that iron ores is very shortage and its price has increased impetuosly, How to make use of inland and overseas resource has important and strategic meanings in order to high produce,low cost and consume,making technics continuate development in iron making. Hence, the research of iron ores metallurgical properties affords scientific suggestions for optimized furnace materious match and the produce of blast furnace.The content of this dissertation is to design measure and control network system for iron ores metallurgical properties. The system has three-level network structure, field device level,intergrated monitoring level,factory management level. The communication between field level and monitoring level is based on CAN bus, data's transmission between monitoring level and management level is realized by industrial Ethernet. Delphi6.0 is the soft developling platform of monitoring level. Socket can realize Ethernet's data communication. The monitoring level monitors field level by host node. CAN bus works in host-client style. Yanhua's intelligent card is chosen as the host node, the client node is on the core of ARM and extends A/D sampling and communication interface and so on. It is realized by C language. Anti-interference measures for hardware and software are designed, the system's reliability is strengthened.The key point is research of CAN real-time transmission. The principle of CAN data's communication and messages' delay is analysed, then a scheme is presented. The scheduling of periodic data is based on TDMA principle, the method of priority Scheduling is used to realize emergent data's transmisstion. Finally two methods is merged, CAN data real-time transmisstion is realized.The gas flow through heating furnace must be controlled accurately in the procees of metallurgical properties' experiment. A fuzzy adaptive PID controller is designed to realize waive control so that the flow can be controlled. Simulationg results prove the method's feasibility. The system get good effect in the experiment.