(2) Engineering design, process industry products and production processes are relatively fixed, new product development and process improvement are offline, so engineering design does not have to be integrated with production management; discrete industrial products and production process structure is complex, The development of new products should follow the market, update quickly, and the cycle is short. There are also a large number of deformation design tasks in the production process, which also requires complex structural design, engineering analysis, precision painting, numerical control programming, etc., so the focus of discrete industrial CIMS Should be placed on these subsystems.

(3) Industrial production, process industry production requires a higher level of automation, emphasizing basic automation. The quality of the product is mainly guaranteed by the automation equipment of the production process. Therefore, the quality management of the process industry CIMS is closely linked to the production automation system. Product inspection is mainly based on sampling, traditional quality control is adopted, product inspection and production management and process control are strictly integrated, and the quality management of discrete industrial CIMS is used as a relatively independent subsystem. In terms of logistics management, the process industry must achieve stable production and high production, not only to ensure the reliability of production equipment operation, but also to ensure the reliability of auxiliary fuel, spare parts and spare parts supply of wind, water, electricity, oil and steam. The production flexibility of the process industry is mainly achieved by changing the parameters of each equipment device in the production process, so the system is required to have reliable real-time online control and application optimization technology.

(4) Information processing, the process industry requires real-time online collection of production data, process quality data, equipment status data, etc. in the production process, it is necessary to process a large amount of dynamic data in time, save historical data, and display it in real time in the form of charts and graphs. . While the discrete industry does not require real-time data information on the production process, the process industry places more emphasis on real-time online condition monitoring of the production process.

3 Information integration of process industrial control system
3.1 Information integration of heterogeneous industrial control systems
The application system of production and management of existing enterprises in China basically consists of two parts. One is the monitoring system of the bottom production process, namely the production process monitoring and control system (SCADA), and the second is the enterprise resource planning management system (ERP). That is, medium and long-term plan management of production and operation of enterprises. The level of automation of the process industry enterprises is relatively high, but the data information of the production process cannot be transmitted in time, and the two are separated from each other. In addition, the communication means between the production branch and the group company is behind in the production management, and many important information cannot be shared in time. It is the disconnection of these information chains that makes it difficult for existing production models to establish a complete top-down automated information integration, and the integration of information is mainly concentrated in the internal information of the enterprise, with no or lack of access to external information. Source, resulting in poor design, sales, production, supply information, prominent contradictions, non-standard business processes, no cost dynamic control system, lack of effective supervision, feedback system, information communication is not timely, low industrial efficiency, can not be achieved The integration of production and management information, so the elimination of “automation islands” or “information islands” is the key to realizing process industry CIMS.

3.2 System architecture and function
The system adopts EES/MIS/MES three-layer framework structure for the characteristics of process industry information integration. The production execution system (MES) is the underlying network control system at the production site, which is the basis of information integration and the key system of the process industry. Management Information System (MIS) is the basis of upper management and decision-making, an effective way to improve enterprise management, an important link in the process industry CIMS information integration, and a technical core system to realize optimal operation and management of production processes. The enterprise e-system (EES) is the central link to transform the traditional business model of the enterprise into an electronic one. It is more open than before and lays a foundation for the company to become international.

(1) Enterprise e-pointing system, enterprise e-pointing system includes external information service subsystem and internal information service subsystem. The external information service subsystem includes external information release, business transaction, and external communication; the internal information service subsystem includes document processing, personal transaction processing, public affairs processing, leadership office, standard document management, intelligence processing, and enterprise employee management. The enterprise information service subsystem enables enterprises to display corporate image globally through the Internet, create corporate culture, timely release development and sales information of various products, communicate with customers, establish good customer relationships, establish an online trading platform, and grasp e-commerce. Infinite business opportunities brought by it; at the same time, it provides an electronic information transmission environment for daily work, and assists office workers in smoothly completing various tasks in mail service, scheduling, document delivery, personal office, conference organization, topic discussion, management supervision, etc. Greatly improve work efficiency, and combine ergonomics analysis and design to simplify the cumbersome work to the utmost.

(2) Enterprise MIS sub-system, enterprise MIS sub-system includes financial management, quality management, manpower management, fixed assets, inventory management, production management, and sales management. The main functions of financial management are analysis of costs, analysis of capital occupation and summary indicators. The functions of quality management are production process quality inspection, analysis and management measurement instrument testing and quality document management. The functions of human management are personnel file management, labor and personnel management, personnel business assessment, attendance management, personnel education and training, recruitment and recruitment management, employee salary management, and maintenance of employee wages. The functions of fixed asset management are the initial construction of fixed assets, the increase and decrease of fixed assets, the treatment of fixed assets, and the depreciation of fixed assets. The function of inventory management is to statistically manage the existing spare parts, develop the demand planning plan for spare parts, purchase spare parts or perform corresponding accounting and reporting. The function of production management is to carry out production statistics, material balance and production scheduling, among which production scheduling is the core of production management. Sales management mainly includes sales planning, contract management, delivery management, sales statistics, and sales analysis.

China has entered the WTO. While competing with domestic markets for multinational groups, enterprises must make their products go global and participate in global competition. It is required that not only the product structure of the enterprise should conform to international standards, but also the management and management should be in line with the world. MIS can modernize and standardize enterprise management, formulate a reasonable enterprise resource allocation plan, reorganize business processes for people, finance, materials, production, supply and sales, optimize the management process to make their information smooth, and thus achieve the most resource allocation. Good state.

(3) Production execution MES sub-system, production process control sub-system including workshop management, equipment management, production monitoring management. The function of the workshop management is to coordinate and organize the production of the class organization, report the attendance of the employees, and report the completion of the work.

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