基于Web的铝电解信息集成系统的研究与应用

【作者】 吴军；

【导师】 李劼； 姜有伟；

【作者基本信息】 中南大学 ， 有色金属冶金， 2002， 硕士

【摘要】 铝电解信息集成系统借助Web技术把铝电解过程控制系统的槽状态信息延伸到管理网络，用浏览器查询访问，供槽况分析和诊断，是管理网络和控制网络的衔接部分。本文以中铝股份河南分公司电解厂管控一体化网络为实验、研究与应用对象，对信息集成技术进行了广泛深入的研究。主要的工作和成果有： (1)针对目前铝电解控制系统中普遍存在的槽况信息没有上管理网，无法实现远程监控，不能把上层管理信息直接转化为生产操作结果等问题，提出将控制、优化、管理、决策集于一体的的设计方案，把主控机的部分功能移植到客户机，对指导铝电解生产无疑具有重要的意义。 (2)在对传统C/S两层结构、基于Web的两层结构充分分析、比较的基础上，提出了适应于分布式异构环境的基于Web的三层应用程序模型，是关系系统开发优劣的关键。该模型具有易于配置和维护、安全性能提高的优点。 (3)网关软件的开发解决了协议数据从CAN总线到Ethernet网的转换问题，利用ADO技术对网络数据库进行操作，特别是，基于TCP/IP协议实现VB应用程序与Java应用程序的数据交换，为系统成功开发奠定了基础。 (4)建立企业内部网站，把Web技术首次应用于铝电解生产管理中，使工业软件由非Web风格转向Web风格，减少了用户端维护，简化了操作。具有界面统一、可移植、分布式、安全等特点。 (5)在对铝电解控制系统深入研究的基础上，把其中流动的、铝电解生产所需的信息(静态数据和实时数据)在客户端进行科学的处理：用Servlet+JDBC方法实现了静态数据传输；用Java Socket编程实现了实时数据传输。 (6)实际编写应用程序服务器组件和Applet嵌入程序(客户端)。应用程序服务器负责接收来自Applet端和VB端的请求，根据请求类型采取不同的获取信息的方式，处理中间结果，并将得到的最后结果作为响应返回客户端；客户端根据用户操作要求负责发送请求信息，并把返回结果以表格或图形的方式显示。整个过程对用户是完全透明的，保证了数据的时效性、准确性，提高了企业的现代化管理水平。 该系统在中铝股份河南分公司电解厂的实际应用结果表明，这一技术的研究对铝电解生产管理有很大的促进作用，达到了良好的效果，而且对铝电解厂信息化建设模式有很好的参考价值。该系统具有可靠性高、扩展性能好、兼容性好的优点，经济和社会效益显著。更多还原

【Abstract】 The information integrated system of aluminum electrolysis, which is assisted by web technology, extends the cell state information of the electrolysis process into the management network so that it can be checked by a browser and used for analysis and diagnosis of cell state. It is the intersection between the management network and control network. In this study, the management-control integrated network of Henan branch of Chinese Aluminum Co, Ltd was took for the objective of experiments, research and applications, and a wide and deep research on information integrated technology was made. The main achievements were as follows:(1) Aiming at the existed problem of present aluminum electrolysis control system such as cell state information can’t be connected to manage network, remote monitor can’t be accomplished, upper management information can’t be converted to operational result directly, a design scheme of converging control, optimization, management decision into a whole was proposed, and part function of super controller was transplanted to client. It undoubtedly have magnificent meaning to guiding aluminum electrolysis production.(2) Based on thorough analysis and comparison of the traditional C/S two-layer architecture and the web-based two-layer architecture, a web-based three-layer application program model adapt to distributed isomeric environment was put forward, which is critical to the development of the system. The system had features of easy configuration, easy maintenance and high safety.(3) The development of gateway software resolved the problem of transferring protocol data from CAN bus to Ethernet. ADO technique was adopted to operate web database. Particularly, the data interchange between VB application software and Java application software based on TCP/IP protocol laid the foundation of successfully developed the system.(4) The inner website of the company was build, and web technology was first applied to the production control of the aluminum electrolysis and so that industrial software’s style was changed from no-web to web. The client’s maintenance was reduced and operation was simplified. This system had uniform interface and was easy to be transplanted, distributed, and safety.(5) Based on deeply research of the aluminum electrolysis control system, a scientific method of dealing with running and necessary datum in the process of aluminum electrolysis (including state datum and real-time datum) were established in client: the state datum were transmitted by Servlet and JDBC and real-time datum were transmitted by Java socket programming.(6) The application server component and applet embedded program (client) were practically programmed. The application sever component took charge of receiving the requests from applet and Visual Basic and took different methods to get information according to the style of request, then treated temporary results and return the latest results to the client as response. The client took charge of sending requests information according to the user’s operation and displayed the results returned as tables and graphs. The whole process was completely transparent for users, which ensured the datum were real-time and accurate and improved the level of modern management.The application of the system to Henan branch of Chinese Aluminum Co, Ltd showed that the research of the technology made great contributions to the management of aluminum electrolysis and bring good effects. Moreover, it has reference value to the model of information construction of aluminum electrolysis plant. The system is characteristic of high reliability, good extension performance,, good compatibility and remarkable economical and social benefit.更多还原