【正文】 泵的運(yùn)行、停止和變頻調(diào)速，；3泵作為消防用水輔助泵，它的控制程序主要控制3泵的運(yùn)行、停止和變頻調(diào)速，：自動(dòng)調(diào)節(jié)過(guò)程反饋值小于設(shè)定值？1泵運(yùn)行控制否是1泵變頻控制1泵工頻控制是啟動(dòng)PID運(yùn)算2泵運(yùn)行控制反饋值小于設(shè)定值？否是定時(shí)5s啟動(dòng)延時(shí)到？否是 1泵的控制程序流程圖否反饋值小于設(shè)定值？切除運(yùn)行于工頻的泵2泵運(yùn)行控制是2泵工頻控制2泵變頻控制啟動(dòng)PID運(yùn)算反饋值小于設(shè)定值？否是定時(shí)5s啟動(dòng)是否延時(shí)到？ 2泵的控制程序流程圖自動(dòng)調(diào)節(jié)過(guò)程反饋值大于設(shè)定值？3泵運(yùn)行控制否是3泵工頻控制斷開(kāi)3泵工頻控制啟動(dòng)PID運(yùn)算否反饋值小于設(shè)定值？是定時(shí)5s啟動(dòng)是延時(shí)到？否 3泵的控制程序流程圖停止1水泵的工頻運(yùn)行程序：控制1泵在工頻運(yùn)行、2泵在變頻運(yùn)行狀態(tài)下時(shí)，壓力傳感器檢測(cè)的水壓在某個(gè)時(shí)間段持續(xù)偏高，這時(shí)候句需要停止工頻工作的1水泵。若使用PLC的PID控制器，則在梯形圖程序中使用PID指令或者使用PID指令向?qū)?。本次設(shè)計(jì)，PID運(yùn)算部分采用的便是后者，具體梯形圖程序如附錄1所示。 元件設(shè)置根據(jù)元件設(shè)置進(jìn)行梯形圖程序的編寫(xiě)，編寫(xiě)后的梯形圖程序如附錄1所示。首先進(jìn)行手動(dòng)模式調(diào)試，、。第5章組態(tài)監(jiān)控界面設(shè)計(jì) View組態(tài)王King View組態(tài)王軟件結(jié)構(gòu)由工程管理器、工程瀏覽器及運(yùn)行系統(tǒng)三部分構(gòu)成[2]。工程瀏覽器：用于創(chuàng)建監(jiān)控畫(huà)面、監(jiān)控設(shè)備以及相關(guān)變量、動(dòng)畫(huà)鏈接、命令語(yǔ)言及設(shè)定運(yùn)行系統(tǒng)配置[2]。監(jiān)控畫(huà)面繪制過(guò)程簡(jiǎn)述如下：，：在資源管理器窗口里點(diǎn)擊新建按鈕，輸入項(xiàng)目名稱(chēng)，選擇保存路徑，單擊“創(chuàng)建”按鈕，一個(gè)新的工程就建立了。右鍵單擊右邊窗口，然后創(chuàng)建一個(gè)新變量，選擇變量的類(lèi)型，最后保存即可?！八畨骸?、“Mpa”、“值班人”，然后在B1中插入動(dòng)態(tài)變量“本站點(diǎn)/水壓”，這樣，水壓就可以在組態(tài)監(jiān)控界面上實(shí)時(shí)顯示，達(dá)到了設(shè)計(jì)的要求。該系統(tǒng)按實(shí)際需要,使用數(shù)據(jù)傳送指令，在梯形圖程序中設(shè)定壓力給定值，根據(jù)壓力差調(diào)整水泵的工作情況，進(jìn)行水泵的工頻/變頻控制，高壓時(shí)水泵工作方式的切換甚至停止，發(fā)生火災(zāi)時(shí)，輔助泵的工頻啟動(dòng)，實(shí)現(xiàn)恒壓供水。2％范圍內(nèi)。由于設(shè)計(jì)了組態(tài)監(jiān)控界面，工作人員不需要頻繁在一線(xiàn)操作，還可以實(shí)現(xiàn)遠(yuǎn)程監(jiān)控。不過(guò)，受限于實(shí)驗(yàn)室條件，本次設(shè)計(jì)自動(dòng)化程度還是有待提高之處，主要體現(xiàn)在許多輔助功能無(wú)法實(shí)現(xiàn)，比如蓄水池水位檢測(cè)，樓層供水液位實(shí)時(shí)監(jiān)控，水泵電機(jī)的多段調(diào)速。目前，國(guó)內(nèi)外關(guān)于本供水系統(tǒng)方面的研究中，在能適應(yīng)不同的控制性能、PLC網(wǎng)絡(luò)通訊、用水場(chǎng)合多樣化、同時(shí)兼顧系統(tǒng)自動(dòng)化程度等方面還有一定的提高空間。致謝對(duì)于這次畢業(yè)設(shè)計(jì)的順利完成、畢業(yè)論文的撰寫(xiě)與完善，我十分感謝我的導(dǎo)師石萬(wàn)里老師！本設(shè)計(jì)從選題到主體控制方案的定奪，我的導(dǎo)師都對(duì)我給予了很大的幫助與指導(dǎo)。系統(tǒng)硬件與梯形圖程序、硬件與組態(tài)監(jiān)控的調(diào)試中，老師豐富的調(diào)試方法，也是深深地讓我折服。他淵博的知識(shí)、嚴(yán)謹(jǐn)?shù)闹螌W(xué)態(tài)度、崇高的敬業(yè)精神與為人師表的典范，使我受益匪淺。最后，我要感謝關(guān)心我們論文撰寫(xiě)的各位學(xué)院領(lǐng)導(dǎo)和老師們，感謝你們四年來(lái)的悉心栽培！參考文獻(xiàn)[1] 謝麗萍，王占富，. [Z].北京：人民郵電出版社，（工業(yè)自動(dòng)化實(shí)用技術(shù)叢書(shū)）.[2] View組態(tài)王. [Z] ..[3] 高安邦，石磊，[Z].北京：中國(guó)電力出版社，.[4] 西門(mén)子（中國(guó)）.[5] 西門(mén)子（中國(guó)） 420通用型變頻器使用大全.[6] ，2002:244251.[7] 2014年中國(guó)水務(wù)行業(yè)市場(chǎng)發(fā)展現(xiàn)狀[EB/OL] .附錄附錄1：梯形圖程序附錄2：外文文獻(xiàn)PLC technique discussion and future developmentAlong with the development of the ages, the technique that is nowadays is also gradually perfect, the petition plays more more strong。t satisfied with the current manufacturing industry foreground, also can39。s labor strength, reduce the establishment on the personnel. The target control of the hard realization in many plicated production lines, whole and excellent turn, the best decision etc., welltrained operation work, technical personnel or expert, governor but can judge and operate easily, can acquire the satisfied result. The research target of the artificial intelligence makes use of the calculator exactly to carry out, imitate these intelligences behavior, moderating the work through person39。s machine bine, for resolve the very plicated problem to look for the best pathWe e in sight of the control that links after the electric appliances in various situation, that is already the that time generation past, now of after use in the mold a perhaps simple equipments of grassroots control that the electric appliances can do for the low level only。s address and saving machine three big pieces to constitute, CPU core is from an or many is tired to add the machine to constitute, mathematics that they have the logic operation ability, and can read the procedure save the contents of the machine to drive the homologous saving machine and I/ Os to connect after pass the calculation。 The saving machine can deposit the data that the I/ O input in the saving machine, and in work adjusting to bee tired to add the machine and I/ Os to connect, saving machine separately saving machine RAM of the procedure saving machine ROM and datas, the ROM can can do deposit of the data permanence in the saving machine, but RAM only for the CPU putes the temporary calculation usage of hour of buffer space.The PLC anti interference is very and excellent, our root need not concern its service life and the work situation bad, these all problems have already no longer bee the topic that we fail, but stay to our is a concern to e to internal resources of make use of the PLC to strengthen the control ability of the equipments for us, make our equipments more gentle.PLC language is not we imagine of edit collected materials the language or language of Cs to carry on weaving the distance, but the trapezoid diagram that the adoption is original after the electric appliances to control, make the electrical engineering teacher while weaving to write the procedure very easy prehended the PLC language, and a lot of non electricity professional also very quickly know and go deep into to the PLC.Is PLC one of the advantage above and only, this is also one part that the people prehend more and easily, in a lot of equipmentses, the people have already no longer hoped to see too many control buttons, they damage not only and easily and produce the artificial error easiest, small is not a main error perhaps you can still accept。t is tolerant of. New technique always for bringing more safe and convenient operation for us, make we a lot of problems for face on sweep but light, do you understand the HMI? Says the HMI here you basically not clear what it is, also have no interest understanding, change one inside text explains it into the touch to hold or manmachine interface you knew, it bines with the PLC to our larger space.HMI the control not only only is reduced the control press button, increase the vivid of the control, more main of it is can sequence of, and at can the change data input to output the feedback with data, control in the temperature curve of imitate but also can keep the manifestation of view to e out. And can write the function help procedure through a plait to provide the help of various what lies in one39。 to be good very.At a lot of situations, the list is is a smooth movement that can39。 But take data in the watch for an instruction procedure that controls the PLC, that had the difficulty very much, for example you have to control one pedestal