Middleware For MES And The Data Dealing Expert System

As China joins WTO and opens its civil market step by step, and with the enhancing economy globalization, the enterprises are under a great competitive pressure. In order to improve the management ability and enhance the competitiveness, building enterprise information system is a main trend, while constructing manufacturing execution system is the key step.Manufacturing execution system, which is located between the Enterprise Resource Planning (ERP) system on the upper level and the industrial control system on the bottom level, is an application of modern information technology on product management. It can enhance the competitive ability through controlling all of the resources in the enterprise, including material, equipment and people, and provide a unified platform to integrate functional modules, such as quality control, model optimization and production planning.This thesis is based on the development and implementation of MES project for a coking & chemical enterprise. A method using middleware technology to solve data sharing problem between real-time database (PI) and relational database (SQL Server 2000) is introduced in detail, and a data processing and analysis system is developed based on it. Meanwhile, a simple expert system is also constructed to process the real-time data. The system provides steady and excellent data for the whole MES project.