【作者】 崔村燕；

【导师】 朱武；

【作者基本信息】 合肥工业大学 ， 流体机械及工程， 2002， 硕士

【摘要】 本文介绍了国内外污水处理及其自动控制系统的发展过程、当今水平和提高自动化程度的若干新技术；研究了污水处理自动控制系统的内在结构、控制规律、主要特点和设计方法；选取污水处理中的典型参数温度、溶解氧、PH值和液位等为控制对象，设计了以个人计算机为上位机、以8098单片机为下位机，并辅之以传感器、变送器及相关接口单元所构成的二级集散控制系统(DCS)；介绍了几个主要程序模块的设计思路、工作过程，这些程序模块是：用高级语言Visual Basic6.0开发的上位机人机交互界面程序、数据处理和图表输出程序，用执行效率高的汇编语言开发的下位机数据采集与系统监控程序、上位机与下位机之间的数据通信程序，汇编语言与VB之间的转接程序，等等。 污水处理集散控制系统的硬件和软件都采用模块化设计，硬件模块便于生产、扩展和维护，软件模块便于修改、扩充或升级。 本项研究的积极意义在于：为污水处理厂自动控制系统的模块化、集成化、智能化设计做出了有益的尝试，为提高我国污水处理自动化程度提供了有参考价值的设计思路。更多还原

【Abstract】 This paper introduces the development process of wastewater disposal,it’s auto control system,the level of nowadays and several new techniques of China and foreign countries. The immanent structure,control rules,main features and design methods of auto control systems in wastewater disposal process are studied in this paper. Aiming at four typical parameters,such as temperature,dissolved oxygen,PH and the planes of water,the Distributed Control System is designed,composed by PC called epigyny computer and SCM 8098 called hypogyny computer,and some sensors,shift deliver utensils and related meet orifices of parameters gathering and figures communication. The idea and work processes of some program modules are also introduced here. The programs in epigyny computer include the program of mutual interface between operator and computer,figure disposal program and chart output program,which are exploited with Visual Basic 6.0. And the programs in hypogyny computer are composed by figure gathering program,the program of supervision and control of system,communication program and meet orifice program between assemble language and VB,which are designed with assemble language.This system is designed by the way of modularization. The hardware modules are easy to produce,extend and keep,and the software modules are easy to modify,expand and upgrade.The fruitful meaning of the thesis is that some valuable attempt for modularization,integration and intelligentize of auto control in wastewater disposal has been done,and it provides a valuable reference idea for advancing the level of auto control system in wastewater disposal plant in our country.更多还原