基于PLC和WinCC的玻璃镀膜控制系统优化设计

发布时间：2018-08-22 14:46

【摘要】：玻璃是一种历史悠久的、常见的建筑材料。近年来,随着科学技术水平高速的发展和运用领域及技术的快速革新,许多新功能玻璃应运而生,壮大了玻璃家族。镀膜玻璃叫做反射玻璃,为了改变玻璃的各种光学特性,用金属、化合物等材料在玻璃表层涂镀一层或多层薄膜。而且,根据不同需求,选择特定的材料,从而使得玻璃基片呈现多种不同的色彩,或者改变可见光透射率,实现紫外线吸收率与红外线反射率的提高。生产镀膜玻璃的方式有多种,如溶胶—凝胶、化学气相沉积、真空蒸发、真空磁控溅射等。用磁控溅射法制作镀膜玻璃能够实现复杂的多层膜系,且膜层在耐磨性与抗腐蚀性上表现较好,是目前使用最为广泛的镀膜方式之一。本文首先针对玻璃镀膜生产线工艺特点,根据国内某玻璃镀膜线的生产需求,对原有自动控制系统进行了改进和优化设计。其次,基于工艺配气、磁控溅射、真空抽气、和伺服传动等各子系统的控制难点及实现过程,优化设计了以西门子S7-400PLC为控制核心,以WinCC 7.0为上位监控软件的玻璃镀膜控制系统。最后,以WinCC 7.0组态软件为平台,搭建了玻璃镀膜控制系统的监控界面,利用上位机对大量生产过程数据进行处理,并将重要参数归档,实现了实时监控生产过程每个环节、显示现场设备运行时的重点参数和一级系统发生故障时的报警功能等。本文改进了控制系统,实现了生产效率与可靠性的提高,且降低了生产成本。设计的系统已经投入生产,控制效果较好,完成了项目的设计目标,响应了国家对节能减排的号召,符合可持续发展趋势,具有重大意义。
[Abstract]:Glass is a long-standing and common building material. In recent years, with the rapid development of science and technology and the rapid innovation of application field and technology, many new functional glass have emerged and strengthened the glass family. Coated glass is called reflective glass. In order to change the optical properties of glass, metal, compound and other materials are used to coat the glass surface with one or more layers of film. In addition, according to different requirements, the glass substrate is selected for a variety of colors, or the transmittance of visible light is changed to improve the ultraviolet absorption rate and infrared reflectivity. There are many ways to produce coated glass, such as sol-gel, chemical vapor deposition, vacuum evaporation, vacuum magnetron sputtering and so on. It is one of the most widely used coating methods to fabricate the glass coating by magnetron sputtering, which can realize the complex multilayer system, and the coating has good wear resistance and corrosion resistance. According to the process characteristics of glass coating production line and according to the production requirements of a domestic glass coating line, this paper improves and optimizes the original automatic control system. Secondly, based on the control difficulties and realization process of various subsystems, such as process gas distribution, magnetron sputtering, vacuum extraction, and servo drive, a glass coating control system with Siemens S7-400PLC as the control core and WinCC 7.0 as the upper monitor software is designed. Finally, using WinCC 7.0 configuration software as the platform, the monitoring interface of glass coating control system is built, and a large number of production process data are processed by the upper computer, and the important parameters are archived to realize the real-time monitoring of each link of the production process. Display the key parameters of the field equipment operation and alarm function of the first level system failure. In this paper, the control system is improved, the production efficiency and reliability are improved, and the production cost is reduced. The designed system has been put into production, the control effect is good, the design goal of the project has been completed, and the national call for energy saving and emission reduction has been answered, which is in line with the trend of sustainable development and has great significance.
【学位授予单位】：昆明理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TQ171.68;TP273

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