【正文】 摘 要 隨著社會(huì)主義市場(chǎng)經(jīng)濟(jì)的發(fā)展，人們對(duì)供水質(zhì)量和供水系統(tǒng)可靠性的要求不斷提高；再加上目前能源緊缺，利用先進(jìn)的自動(dòng)化技術(shù)、控制技術(shù)以及通訊技術(shù)，設(shè)計(jì)高性能、高節(jié)能、能適應(yīng)不同領(lǐng)域的恒壓供水系統(tǒng)成為必然的趨勢(shì) 本論文分析 恒壓給水系統(tǒng)的原理和結(jié)構(gòu) ， 設(shè)計(jì)不同方案 ， 綜合各方面考慮，本論文采用變頻器和 PLC 實(shí)現(xiàn)恒壓供水和數(shù)據(jù)傳輸，然后用數(shù)字 PID 對(duì)系統(tǒng)中的恒壓控制進(jìn)行設(shè)計(jì)。最后對(duì)系統(tǒng)的軟硬件設(shè)計(jì)進(jìn)行了詳細(xì)的介紹。具體講述了系統(tǒng)的總體設(shè)計(jì)與軟件的實(shí)現(xiàn)，并對(duì)系統(tǒng)采取的可靠性措施進(jìn)行了說(shuō)明。 關(guān)鍵 詞 變頻調(diào)速 ， 恒壓供水 ， PLC 攀枝花學(xué)院本科畢業(yè)設(shè)計(jì)（論文） ABSTRACT Ⅱ ABSTRACT With the rapid development of socialistic marketing economy,there is a growing demand for better quality of water supply and higher reliability of supply system. In addition ,considering the current mon energy crisis, achieving the scheme of auto matingthe water supply system. So it is an inevitable tendency to design and create an energysaving constantpressure water supply system of excellent performance with the help of advanced techniques of automation,monitorcontrol system。 and munication. Meanwhile, the System can also adapt to various water Supply regions. This paper analyzes the structure of VF speed regulating constantpressure water supply,and proposes several control careful study and parison, PLC and inverter39。s method fits water supply system and datatrans mission very well. Finally the paper shows the design of constant pressure supply water controller according to PID data and detailed introduction of its software and this paper,the author designs and realizes the remote monitor and control system through MCGS, and then illustrates its general design, software implement and the measures of preventable disturbance in details. Key words VF speed， constant pressure water supply， PLC 攀枝花學(xué)院本科畢業(yè)設(shè)計(jì)（論文） 目錄 1 目 錄 摘 要 ...............................................................................................................錯(cuò)誤 !未定義書簽。 ABSTRACT .........................................................................................................錯(cuò)誤 !未定義書簽。 1 緒論 .......................................................................................................................................1 城市供水系統(tǒng)的要求 .......................................................................................................1 變頻恒壓供水的背景和意 義 .............................................................................................3 國(guó)內(nèi)外研究概況 ..............................................................................................................3 2 恒壓給水系統(tǒng)簡(jiǎn)介 ...............................................................................................................5 ............................................................................................................5 課題研究的對(duì)象 ..............................................................................................................6 ..............................................................................................6 變頻構(gòu)成恒壓供水系統(tǒng)的及工作原理 ...............................................................................6 系統(tǒng)的構(gòu)成 ...........................................................................................................6 工作原理 ...............................................................................................................7 變頻恒壓供水系統(tǒng)中增減水泵過(guò)程分析 .................................................................8 主電路接線圖 ..................................................................................................................9 3 恒壓供水系統(tǒng)硬件配置 ..................................................................................................... 10 可編程控制器選型 ......................................................................................................... 10 PLC .............................................................................................................. 10 PLC的選型 .........................................................................................................................11 PLC的接線 .......................................................................................................... 12 變頻器選型 ................................................................................................................... 13 簡(jiǎn)介 .......................................................................................................... 13 變頻器的 選型 ...................................................................................................... 14 壓力傳感器選型 ............................................................................................................ 14 ........................................................................................................................... 15 4 恒壓供水系統(tǒng)程序與仿真 ................................................................................................... 17 恒壓供水系統(tǒng)流程圖 ..................................................................................................... 17 恒壓供水系統(tǒng)程序與仿真 ............................................................................................. 19 手動(dòng)程序 設(shè)計(jì)與仿真 ........................................................................................... 19 自動(dòng)程序 設(shè)計(jì)與仿真 ........................................................................................... 22 結(jié)論 ........................................................................................................................................... 33 攀枝花學(xué)院本科畢業(yè)設(shè)計(jì)（論文） 目錄 2 參考文獻(xiàn) ................................................................................................................................... 34 附件 A：恒壓供水系統(tǒng)程序語(yǔ)句表 .....................................................................................................35 致謝 ..........................................