污水处理自控系统.doc

摘 要 环境保护是关系到可持续发展的一个重要问题。我国的现代化建设必须吸取国外工业化过程的教训，在发展经济的同时，注意环境保护。我国的环境污染问题十分突出，特别是水源污染，对环境危害巨大。当富含氮磷的污水直接排入河流后，会严重污染水源，危害健康。同时排放污水的单位也会严重的处罚，为此而背上沉重的负担。这些都促使我们开发一种中小规模的污水处理设备来净化污水，使其达到排放标准。 此文是介绍污水处理控制系统的设计。自控系统是整个污水处理设备的核心部分。在它的控制下，设备不断检测污水的参数，并执行相应的处理流程。由于系统工作于室外，工作环境恶劣，且需要全天不间断工作。就要系统有较强的抗干扰能力和可靠性。这是自控系统设计的重点也是难点。 文章中讨论了常见的干扰来源以及相应克服措施。在系统设计时，我们尽可能地采用这些方法，以达到满意的效果。 关键词：污水处理，自动控制系统，抗干扰 ABSTRACT Environmental protection is an important bearing on sustainable development issues. Chinas modernization must learn the lessons from abroad industrialization in economic development, attention to environmental protection. Chinas environmental problems are very prominent, especially water pollution, tremendous harm to the environment. When the rich Danlin sewage directly into the river, water will be serious pollution and health hazards. At the same time the unit will discharge sewage serious punishment, thus putting a heavy burden. These prompt us to develop a small-scale sewage treatment facilities to purify sewage to meet emission standards. This book is introduced by the robotic system of sewage treatment equipment design production. Robotic system is the core of the entire sewage treatment equipment. Under its control, testing equipment and effluent parameters and the implementation of the corresponding processing flow. As in the outdoor system, poor working environment and the need for full uninterrupted work. We have a strong anti-interference capability and system reliability. This is also the focus of robotic systems design problems. The article discusses common interference sources and the corresponding measures to overcome. In system design, we use these methods as much as possible to achieve satisfactory results. Keywords: Sewage, automatic control systems, anti-interference 目 录 摘 要 1 ABSTRACT 2 第一章 绪论 3 1.1课题提出及意义 3 1.2国内外发展现状 4 1.3课题研究内容及实施方案 6 第二章 系统设计 6 2.1污水处理简介 6 2.2 控制系统硬件总体结构 7 2.3硬件设计 8 2.4软件设计 13 第三章 系统干扰问题及其措施 22 3.1干扰来源以硬件措施 22 3.2软件抗干扰措施 2