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1、III恒压供水系统控制器的设计摘要随着我国经济的快速发展,高层建筑越来越多,这为高层建筑的供水提出了挑战,传统的通过水塔、气压增压等供水方式不仅设备投资大,占地面积大,维修困难,水压不稳定,使得难以满足高层建筑的需要。恒压供水系统具有供水安全、节约能源、节省钢材、节省占地、节省投资、调节能力大、运行稳定可靠的优势,具有广阔的应用前景和明显的经济效益与社会效益。所以某些用水区采用恒压供水系统,具有较大的经济和社会意义。本设计以单片机AT89C51做为控制核心并协调整个系统的工作,通过压力传感器检测当
2、前水的压力,压力传感器输出的是0~5V的模拟量,要经过A/D转换成为数字量再送入单片机AT89C51进行处理,通过单片机的处理在LED数码管上显示当前的压力值。按键用来设定想要控制的压力值,单片机在内部通过比较设定的压力和当前压力,当前压力小于设定压力时就会闭合电磁开关,开启电机装置,并开始报警。高于设定压力时断开开关电机停止转动。压力和设定值在时时检测,达到控制目的。关键词:恒压供水,传感器,单片机IIITheControllerDesignofConstantPressureWaterSupp
3、lySystemABSTRACTWithChina'srapideconomicdevelopment,moreandmorehigh-risebuildings,whichthewatersupplyforthehigh-risebuildingsposedachallengetothetraditionalthroughthetowers,airpressureandotherpressurizedwatersupplynotonlytheequipmentinvestment,coversa
4、nareaofmajormaintenanceproblems,waterpressureinstability,makesitdifficulttomeettheneedsofhigh-risebuildings.Constantpressurewatersupplysystemhasthewatersupplysecurity,energyconservation,savesteel,savingland,savinginvestment,adjustmentcapacity,theadvan
5、tagesofstableandreliable,andhasbroadprospectsandsignificanteconomicandsocialbenefits.Sosomeofthewaterareawithconstantwatersupplysystem,withgreateconomicandsocialsignificance.AT89C51microcontrollerasthecontroldesignandcoordinatethecoreoftheworkoftheent
6、iresystem,throughthepressuresensordetectingthecurrentwaterpressure,thepressuresensoroutputis0~5Vanalog,togothroughtheA/DconvertedintodigitalandthensenttomicrocontrollerAT89C51processed,handledbythemicrocontrollerontheLEDdigitaldisplaythecurrentpressur
7、evalue.Buttontosetthedesiredcontrolpressure,themicrocontrollersettingtheinternalpressureandbycomparingthecurrentpressure,currentpressureislessthanthesetpressurewillbeclosedwhentheelectromagneticswitch,opentheelectricaldevice,andstartthealarm.Abovethes
8、etpressureswitchoffthemotorstopsrotating.Constantpressureandsetthevalueinthedetection,tocontrolpurposes.KEYWORDS:constantpressurewatersupply,sensor,microcontrollerIII目录摘要IABSTRACTII1前言11.1课题背景和意义11.2本课题研究内容与主要工作11.3本课题的研究预期成果22总体系统设计33硬件设计53.1