基于PLC的景观建筑供水水泵控制系统设计摘要：随着生活条件的提高，环境也越来越美观，水景作为人们生活中必不可少的景观。在公共场所基本上都有建设，它们仅仅在规模上有所区别。本次设计就是一个对建筑瀑布供水水泵设计，在本次设计当中，使用了PLC、变频器，对水泵进行变频控制。本次设计的思路是依据音乐的音量控制瀑布大小。应用PLC将音频信号转换为脉冲信号，然后输入到变频器中，使变频器的输出频率随着音频信号的变化而变化，这样就对水泵进行了调速，改变了供水量，达到了瀑布大小随音乐变化的目的。这就用到了变频调速。变频调速有着良好的优点，大部分需要调速的场合都应用了它，是很先进的方式。所以利用PLC控制水泵供水也变得方便，高效。关键词：变频器：变频调速：PLCDesign of water supply pump for landscape architecture based on PLCAbstract:With the continuous improvement of people's living environment,the construction of the city isbecoming more and more beautiful.Waters cape has become a beautiful landscape in people's life.In largeparks,squares and scenic spots can be seen everywhere,but the size,control methods are different.This designis a construction waterfall water supply pump design,in this design,the use of PLC,frequency converter,thepump frequency conversion control.The annoying control of this design is to control the waterfall size by music.The application of PLC and theaudio signal is converted into a pulse signal,then input to the inverter,the inverter output frequency varieswith the audio signal,so that the pump speed,change the water supply reached the waterfall with the music tothe change of size.This uses frequency conversion speed regulation.Frequency of its excellent performance and the speed of braking performance,high efficiency,high powerfactor and energy saving effect,wide application range and many other advantages of being recognized as themost promising way to speed.Therefore,the use of PLC control pump water supply has become convenientand efficient.Key words:Motor,Variable frequency starting;PLC