Research And Development Of Information Integrated System For Papermaking Enterprise

In modern papermaking process, heterogeneous equipments and networks not only lead to the lack of direct communication between process control systems but also create the independence between management system and process control system in enterprises. This "isolated islands" phenomenon will eventually break the relationship among all the departments and make the decision-making inefficient. Therefore, it's essential to construct a comprehensive information platform on which the producing data and the management data are integrated, and it can be used to share data among departments and thus to provide reliable data support for enterprise's quick decision-making.The carried out design and implementation of the platform are based on the significant manufacture industry information project in Zhejiang province—Papermaking Process Green Control Technology and Synthesis Information Integration Platform. The main work and contribution in this dissertation are as follows:1. An overall design of integrated systems is proposed after investigation and requirement analysis of papermaking enterprise. The system can be divided into three layers: device layer, abstract layer (middleware layer) and information layer. The abstract layer is designed as a connecting link between the preceding and the following, which collects data from device layer and sends it to information layer.2. Database system is indispensable in abstract layer, based on requirement analysis, the IDEF modeling methods are adopted to design the function model and information model, and then the database of integrated system is established.3. The data resource of integrated platform includes both management data of enterprise and producing data in papermaking process. There is a problem caused by heterogeneous systems in data access, to which the OPC technology is a preferable solution. OPC makes it possible for the abstract layer to shield variety of data interfaces in device layer and provide unified data access to information layer.4. The information layer plays a quite important role because users contact the platform directly through this layer. Based on the analysis of the existing WEB technology, a stable WEB server using Struts frame on JAVA platform is constructed, then the presentation of Management information on WEB, display of process data and curves drawing of real-time data are realized.5. The work in the dissertation is summarized and analyzed. Furthermore, the problems to be solved in future are pointed out.