摘要随着我国现代化的进程不断加快，城市居民生活水平不断提高，随之而来的是房屋的翻新和重建，但建筑层数的不断增高，使得供水所需压力不断提高，若建筑设计时对压力判断不足，会导致供水时无法供应到高楼层，给人们的正常生活带来极大的不便利。本文在充分了解恒压供水发展由来，国内外变频器发展历史及研究现状，以及国内常用的几款控制器的基础上，确定了以单片机与变频器结合的方式实现恒压供水，其中主控制部分的控制核心单片机选用AT89S52型单片机，其内部具有PID自整定程序可对检测回来的压力信号进行自动调整；在此基础上并对外接模块进行设计和芯片选择：压力转换模块其选用TLC549作为核心芯片、输出模块选用TLC5620芯片、驱动模块采用ULN2803芯片、键盘显示模块采用ZLG7290B芯片、存储模块采用X5045芯片、通讯模块采用MAX232芯片。本次设计的恒压供水控制器将选用单片机与变频器相互结合的方式，由于单片机本身的特性，因此具有价格便宜，编程方便的特点。加之变频控制器本身具有的节能、实时调节、延长寿命的优点，使得本次的设计更加具有现实意义。关键词：单片机；恒压供水系统；PID控制；变频调速-I-ConstantpressurewatersupplycontrollerdesignbasedonsinglechipmicrocomputerAbstractWiththeacceleratingtheprocessofmodernizationinourcountryandcityresidentslivingstandardsimprove,followedbytherenovationandreconstructionofthebuilding,buttheincreasingconstructionlayer,makethewaterpressureincreasing,whenbuildingdesignjudgmenttopressureisinsufficient,canleadtowatersupplywhenunabletosupplytotheupperfloor,topeople'snormallifebringsgreatconvenience.Basedonfullyunderstandthedevelopmentorigin,constantpressurewatersupplyinverterdevelopmenthistoryandresearchstatusathomeandabroad,anddomesticcommonlyusedafewcontroller,onthebasisofpreliminaryestablishedwithcombinationofsingle-chipmicrocomputerandconvertertorealizeconstantpressurewatersupply,themaincontrolpartchoosetypeAT89S52singlechipmicrocomputercontrolcoreofthesinglechipmicrocomputer,theinternalPIDself-tuningprocedurecanbeautomaticallyadjustsforthedetectionofthepressuresignalback;Onthisbasisandexternalmodulessuchas:pressureconversionmoduleselectionofitseightbitsasthecorechip,theoutputmoduleTLC5620ULN2803,keyboarddisplaymodule,drivemoduleUSEStheZLG7290BX5045,communicationmodule,storagemoduleUSESadesignusingMAX232,etc.Thedesignofconstantpressurewatersupplycontrollerwillchoosemutualcombinationofsingle-chipmicrocomputerandconverter,duetothecharacteristicsofthemicro-controlleritself,soitischeap,convenientprogramming.Combinedwithfrequencyconversioncontrolleritselfhastheadvantagesofenergysaving,real-timeadjustment,prolonglife,makesthedesignmorerealistic.KeyWords：Singlechipmicrocomputer；Constant-pressureWaterSupply；PIDControl；VariableFrequencySpeedRegulation-II-目录摘要.........................................................................................................................................IAbstract......................................................................................................................................II引言.........................................................................................................................................11绪论.........................................................................................................................................21.1恒压供水背景及意义...................................................................................................21.2国内外研究现状......................................................
