西門子PLC在污水處理控制系統(tǒng)中的應(yīng)用

電氣自動化論文編號:ZD647    論文字數(shù):12400,頁數(shù):34

目 錄
1 緒論 1
1.1 課題背景 1
1.2 PLC的發(fā)展趨勢 1
2 污水凈化處理系統(tǒng)設(shè)計方案介紹 4
2.1 污水凈化處理系統(tǒng)方案概述 4
2.2 物理法處理技術(shù)方案選擇 4
2.3 各污水處理方案的分析和比較 5
2.4 方案的確定 5
2.5 方案三的具體實施 6
2.5.1 系統(tǒng)的組成介紹 6
2.5.2 系統(tǒng)的設(shè)計要求 7
2.5.3 系統(tǒng)的布局 7
2.5.4 工藝流程 8
3 系統(tǒng)方案硬件選型 9
3.1 可編程控制器概述 9
3.2 硬件的選擇 10
3.3 硬件實施 11
4 系統(tǒng)軟件設(shè)計 13
4.1 系統(tǒng)軟件選用和設(shè)計 13
4.2 輸出故障檢測和報警 13
4.2.1 故障診斷子程序的作用 13
4.2.2 故障子程序的設(shè)計 13
4.3 系統(tǒng)I/O分配表 14
4.4 軟件設(shè)計的可行性 14
5 污水處理系統(tǒng)通信調(diào)試 15
5.1 計算機的通信方式概述 15
5.2 系統(tǒng)采用串行通信接口 16
5.3 硬件S7-200與PROFIBUS通信 17
5.4 系統(tǒng)調(diào)試 18
5.5 系統(tǒng)可行性闡述 19
總 結(jié) 20
致 謝 21
參考文獻 22
附 錄 23
附錄1：系統(tǒng)主程序 23
附錄2：故障診斷子程序 29

文摘 本文主要介紹了 PLC在城市污水處理中的具體應(yīng)用實例，系統(tǒng)介紹了城市污水處理工藝流程以及基于SIEMENS的S7—200 系列PLC的污水處理實施方案，介紹城市污水處理廠監(jiān)控系統(tǒng)數(shù)據(jù)采集的方法。可編程控制器即PLC是綜和了計算機技術(shù)、自動控制技術(shù)和通信技術(shù)的一種新型的、通用的自動控制裝置。現(xiàn)在可編程控制器已經(jīng)成為最重要、最可靠、應(yīng)用場合最廣泛的工業(yè)控制微型計算機。它具有功能強、可靠性高、使用靈活方便、易于編程以及適應(yīng)工業(yè)環(huán)境等一系列優(yōu)點。為了提高污水處理廠的運行管理水平， PLC也成為了該系統(tǒng)的重要組成單元之一，在該系統(tǒng)中各單元按一定拓撲結(jié)構(gòu)互相連接構(gòu)成污水處理廠的控制系統(tǒng)。��
關(guān)鍵詞  污水處理；自動化控制系統(tǒng)；PLC；硬件配置；軟件設(shè)計。

The application of PLC in sewage disposal control system

Digest this article mainly introduced PLC in the city sewage treatment concrete application example, the system introduced the city sewage treatment technical process as well as based on SIEMENS S7-200 the series PLC sewage treatment implementation plan, introduces the city sewage treatment plant supervisory system data acquisition the method.The programmable controller was PLC is the grand total computer technology, the automatic control technology and the communication one kind new, the general automatic control device. Now the programmable controller already became importantly, most reliable, the application situation most widespread industry control microcomputer.It has the function strong, the reliability high, the use nimble convenient, easy to program as well as the adaptation industry environment and so on a series of merits.In order to enhance the sewage treatment plant the movement management level, PLC has also become one of this system important composition units, in this system various units according to certain topology interconnection constitution sewage treatment plant control system.
Key word sewage treatment; Automation control system; PLC; Hardware disposition; Software design.