Design And Implementation Of Industrial Control System Data Communication Platform

With the continuous development of data communications, the information open design of the industrial control system has gradually become an important technology in the field of control. Unified management of the general data communication platform is the future trend in the development of industrial control information system. In view of the low data opening of the industrial control system, it is needed to develop a different data interface when the extension development of the third party control system is the diversity of communication mode. So as to lead to low efficiency of the development,low reliability and data security, extend the time of the system development and severe slow down the progress of the project. The data communication platform uses a data interface which applicable to the industrial control system, and provides the user rights management to enhance the security of data communication. At the same time, it also provides several common communication modes applicable to the control system, solves the open-ended question of data information. Therefore, the design general data communication platform is the inevitable developing trend of industrial control system data information.The development of data communication platform includes many design modules,interface and communication mode. In order to achieve a more efficient and comprehensive system platform, this design adopts Rose Rational modeling software,which is based on object oriented design method, to use UML(Unified Modeling Language) modeling design. The establishment of the platform based on generality of interface and openness of communication in the industrial control system, also requires domestic and international mainstream industrial control system analysis. Firstly, the functional and non-functional requirements of the system are modeled, and the module function of the platform is expressed by use case diagram. Then, the system static structure and dynamic behavior modeling. Static structure modeling describes different kinds of information and hierarchical structure. Dynamic behavior modeling is based on the time sequence diagram, collaboration diagram, state diagram and activity diagram on the platform to achieve the object of time, action, message transfer and other different expressions. Finally, because the platform has a variety of communication methods, the physical structure of the system and the external device is needed to be described by the configuration diagram and component diagram of the implementation modeling. C++language can effectively achieve the inheritance relationship between different classes and the design of object-oriented development. Through the Rose Rational modeling tool to generate the VC6.0 code framework, improve the development efficiency and reduce the workload of programming. Using VC6.0 for development, it is easy to realize theman-machine interface and general interface. In the development of software design, the system consist of the user rights management module, the general data interface module and the multi-thread communication module. After testing and debugging, the requirements of industrial control and the practical application of the power plant simulation and optimization control station are obtained.The design of the data communication platform to solve the open problem of the industrial control system information, effectively expanding the control system and the development of the third party control system. It has far-reaching practical significance for improving the technical level of the domestic industrial automation control industry and the research of communication method.