4 Engineering application of process CIMS system

Iron and steel enterprises are typical process industries. China's iron and steel enterprises are one of the important pillar industries of the national economy. With China's accession to the WTO, steel companies are facing worldwide competition, how to improve the competitiveness of China's steel enterprises, The extent depends on the level of informatization construction of China's steel enterprises. For China's iron and steel enterprises, the basic automation parts, such as heating furnace control system, combustion furnace control system, etc., have all realized technological transformation, basically adopting PLC, DCS, etc. to realize control, which is equipment integration in enterprise information construction. Provides a hardware foundation. In the process of information construction, the realization of data integration between the basic automation control system and the management system will play an important role in the realization of enterprise ERP and MES. One of the keys is to implement real-time database engineering for the management of the enterprise. Provide strong data support. Since the informatization construction of China's iron and steel enterprises started late, it mainly focused on the introduction of foreign advanced control technology and equipment to realize the transformation of the basic control system, but the implementation is not difficult. Through technological transformation, the technical level and products of technicians are improved. Quality and production efficiency have played an active role. So far, the basic automation parts of steel companies have had better equipment, and the control systems and equipment of different manufacturers have appeared in steel companies, such as SIMENSE, ROCKWELL, GE, ABB, etc. However, the transformation of these basic automation systems is still a technological transformation, and it cannot be regarded as the information construction in the true sense. Then, the iron and steel enterprises implemented partial informationization in the aspects of financial management system, procurement management system and sales management system, and then established a company-level basic network, which laid a certain foundation for the overall information construction of the enterprise. So far, the informationization level of China's steel enterprises has reached a certain level. For example, the informationization of Shanghai Baoshan Iron and Steel Group, Wuhan Iron and Steel Group and Capital Iron and Steel Company have achieved good results. However, there are many manufacturers' products in the basic automation part of iron and steel enterprises, and the interoperability is poor. As a result, most of the data in the control system is limited to the local control system, and the data is not transmitted upwards in order to play the role of the overall benefit of the data. At the same time, in some steel enterprises that implement ERP system, the manufacturing management module needs real-time data of field devices in order to achieve accurate production scheduling and overall scheduling functions; at the same time, the company-level management reflects the timeliness of each branch site. The requirements are getting higher and higher, and it is necessary to understand the operation status of the key equipment of the branch and so on. In short, the data information located in the basic automation layer and the management data information need to be integrated, real-time database engineering is to solve the data integration problem.

4.1 Information Integration Based on Industrial SQL ServerTM At present, most steel companies in China have many branches, such as steel mills, ironworks, medium plate plants, high-speed wire plants, power plants, etc. From the CIMS implementation process, Whether to adopt top-down or bottom-up implementation, it is essential to establish a company-level real-time database. When the upper level of the enterprise has implemented the ERP project, one of the purposes of the implementation is to achieve resource sharing and optimal configuration. At this time, establish a company-level real-time database system to share the real-time data of each branch to meet the benefit analysis in ERP. Relevant company-level production scheduling requirements; when enterprise implementation informationization is integrated from the basic automation layer, establishing a company-level real-time database project will bring out the overall benefits of the basic data, eliminating the "from the control system to the branch, from the branch to the company" Automated islands and “information islands”. In summary, company-level real-time database engineering is essential when implementing CIMS. In the selection of company-level real-time database platform, it is recommended to use Wonderware's Industrial SQL ServerTM. Wonderware, as the leading software supplier in the industrial control field, has launched excellent software products for industrial enterprises, among which in the real-time database overall solution, There is software for implementing device integration - I/O Server, which currently integrates with more than 750 PLCs, DCS, smart meters and other devices. For devices that are not included in the integration, Wonderware provides a set of development software, the I/O Server Toolkit. Developers only need to know the communication protocol and format of the device to develop an I that meets the integration requirements of the device. /O Server. Industrial SQL ServerTM uses high-speed data acquisition and storage architecture, combined with the mature Microsoft database product SQL ServerTM to achieve real-time data collection and storage management, up to 100,000 points of capacity, fully meet the needs of steel companies, management operations are simple, query The statement is based on excellent functions such as SQL extension. It has a dynamic visualization analysis tool (ActiveFactory) for real-time data, real-time data query, trend analysis, and various complex report functions. It can also be implemented with Microsoft Office products. Sewing integration, various functions can be completed only by mouse click; OptionVoyager can be selected to realize real-time online publishing of enterprise on-site information, and can also be realized by simple configuration such as remote online monitoring, online reporting, online security configuration. And other functions.

According to the basic needs of steel companies, combined with the advantages of Wonderware software products, the real-time database system composition scheme can adopt a relatively centralized architecture, as shown in Figure 2. The construction plan sets up a real-time database server in the company's information center. The specific capacity is determined according to the actual number of data points required. In addition, a company-level manufacturing information portal server is set up at the company-level management level, which only needs to be in the respective PC. Install the real-time database client analysis tool - ActiveFactory and IE browser to achieve data analysis and partial B / S based analysis statistics. Remote IDAS is adopted in each branch to achieve fault-tolerant performance at the branch level to ensure the data integrity of each branch to the company. According to the requirements of the management system, the corresponding application interface can be developed to realize the support function of real-time data to ERP or MIS.

Figure 2 Overall architecture of the real-time database system

The data acquisition network structure of each branch is shown in Figure 3. Various control systems include smart meters to collect data through I/O Server. Some control systems have monitoring software on the host computer. If the monitoring software is based on Windows operation. The system platform, and supports the DDE protocol can directly enter the system; there are also some DCS systems that support the OPC specification, which can be considered as an OPC Server. Various I/O Server acquisition computers are finally connected to the branch-level remote IDAS as a buffer into the company's real-time database system.

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