Based On Bulk Cargo Loading And Unloading Of The Control Network Configuration Chemical Control Simulation System Design And Development

This paper introduces the simulation, which starts when the ship reaches the port. It establishes the function and structure of a computer-simulation model, which is important to simulate loading and unloading control system for a specialized bulk cargo. This system first simulates various kinds of loading and unloading equipment via computer, which is integrated into ICN (industrial control network) , at the same time it simulates central control operation and management via configurable software on the workstation, and controls equipment with PLC (programmable logic controller), all the work course in the bulk cargo quay is simulated dynamically.The ICN-based simulation system of loading and unloading control equipment has been established via advanced, reliable and strong real-time character hardware. The visual development software has remarkable performance, and can carry on lifelike equipment simulation. The CIC (configurable industrial control) -software provide various kinds of powerful functions, such as real-time online monitor, real-time data acquisition, storing, inquiry, statistics, typing report form, alarm logging and recording , and so on. Thus the simulation of loading and unload automatic control system of bulk cargo comes close to reality.Chapter one summarize the technological background of the simulation, which bases on the automatic loading and unloading system of bulk cargo.Chapter two of paper first introduces the craft flow of the bulk cargo, the composing of a loading and unloading control system. Then it introduces the network structure of the automatic control systems, soft and hardware disposition of the automatic simulation laboratory of port.In chapter three, the paper deeply analyses the key problem which is solved in setting up the simulation system. It includes control models of the simulation system. Real-time character and I/O port which is dual-used have also been discussed here.The paper first sets up the simulation mathematics model of a bulk cargo control system in chapter four. The relation equation and logic of every model variable is calculated, which offers theory support for the simulation application program of the equipment, PLC control program, and simulation program of the monitor work-station.Chapter five of paper deeply discusses the simulation system. It first introduces the frame of the simulation, then describe in detail about communication program of I/O interface, PLC control program, touch-sensitive screen program, and program of the monitor work-station.Chapter six of paper summarizes the study of the project, propose the perspective imagination.