【正文】 基于 PLC 和變頻器的花式噴泉的設(shè)計 畢業(yè)設(shè)計說明書（論文）中文摘要 隨著我國城市化進程的加快和人口的大量集聚，環(huán)境顯得越來越重要。在日常生活中的一些公共場所，比如：廣場、大廈、小區(qū)等等。我們可以看到各種各樣的噴泉，有的是為了引人入目，有的是為了給生活或節(jié)日增添喜慶的氣氛，而有的則成了企業(yè)的一種精神象征，同時噴泉還可以凈化空氣，減少塵埃，降低氣溫。噴泉的細小水珠同空氣分子撞擊，能產(chǎn)生大量的負氧離子，有益于改善環(huán)境和增進人們的身心健康。在炎熱的夏日可以起到增濕和降溫的作用：目前世界各國技術(shù)發(fā)展日新月異，不過很多 都是以破壞環(huán)境為代價的，環(huán)境問題已經(jīng)受到了黨和國家以及全國人民的重視，保護環(huán)境，人人有責(zé)！ 花式噴泉是近年來出現(xiàn)的一種園林建筑與花式觀賞相結(jié)合的一種產(chǎn)物。 隨著可編程控制器在我國的迅速發(fā)展，對花式噴泉的控制要求也越來越高，使得越來越多的控制部分需要可編程控制器來實現(xiàn)。 花式噴泉采用了可編程控制器 (PLC)和變頻器，用軟件實現(xiàn)對花式噴泉運行的自動控制，可靠性大大提高。控制系統(tǒng)結(jié)構(gòu)簡單，可方便的增加或改變控制功能，也可以進行故障自動檢測與報警顯示，提高運行安全性，并便于檢修。變頻器調(diào)速以其優(yōu)異的調(diào)速性能和起制動性 能，可以控制噴泉水位的高度?？删幊炭刂破?PLC）技術(shù)結(jié)合變頻器調(diào)速技術(shù)已成為現(xiàn)代噴泉行業(yè)的一個特點。 關(guān)鍵詞 可編程序控制器 (PLC) 花式噴泉 梯形圖 變頻器 控制水泵 畢業(yè)設(shè)計說明書（論文）外文摘要 Title Design Based on PLC and converters of the fancy fountain Abstract With the accelerated process of urbanization and the large concentration of population, The environment is being more and more important. In some public places in everyday life, such as in square, building, district, etc. We can see various fountain, some of them just want to catch people’s eye, and some want to enhance the atmosphere of daily life or festival, and others bee a kind of the symbol of enterprise spirit. Meanwhile fountain can moisten the air, reduce dust and lowering temperature .The tiny water droplets collide with air molecules can produce a lot of negative oxygen ions. Fancy fountain can be seen everywhere. It can improve the environment and enhance people39。s physical and mental health. During the hot summer it plays an important role in increasing the humidity and lowering temperature. In most countries, technology is advancing rapidly, but many are based on the cost of destroying the environment .Now the party, the state and the national people have paied great attention to the environment. Protection of the environment is everyone39。s responsibility! Fancy fountain is the product of the bination between garden architectural and fancy ornamental. With the rapid development of programmable controller in China , the control requirements of fancy fountain is being more and more strict, so more and more control section should need programmable controller to achieve. Fancy fountain uses a programmable logic controller (PLC) and the frequency converter, using software to control the fancy fountain and it can increase the reliability. The control system is simple and can be easily added .We also can change its control function. It provides functions of automatically detect the faults and alarm ,so it improves operational safety , and is easy to examine and maintain .Owing to its excellent performance ,starting and braking performance ,the fancy fountain can control the height of the water level. PLC programmable logic controller bined with frequency converter technology has bee a feature of the modern fountain industry. Key words PLC（ Programmable Logic Controller） fountain frequency converters trapezoidal diagram controlling pump 0 目次 1 緒論 .................................................................. 1 課題設(shè)計研究的內(nèi)容 ................................................. 2 課題設(shè)計研究的目的及意義 ........................................... 3 2 系統(tǒng)控制方案的確定 ................................................... 4 采用 PLC 控制花式噴泉的優(yōu)點 ......................................... 5 系統(tǒng)設(shè)計的基本步 驟 .................................