电气信息学院毕业设计说明书题目：单相电子式IC卡预付费电度表专业：电气工程及其自动化年级：2009级学生：胡辉学号：指导教师：王萌完成日期：年月日单相电子式IC卡预付费电度表摘要：本文介绍了基于单片机的可靠性高、便于扩展、控制功能强、低电压、低功耗等优点设计的单相电子式IC卡预付费电度表。在设计中主要是利用单相电子式电能表专用集成芯片ADE7755来实现用户对所使用电能计量，再利用单片机AT89C52作为电路的控制中心。在设计电能计量电路之前需先将电压、电流信号进行采集再通过电能计量芯片ADE7755进行电能计量，将所测得电量传到单片机，再利用IC卡设置预付费系统，最后再利用LCD进行显示，最后再通过软件调试实现基本的要求。通过此方法所测得的电能准确，且整个系统的精度高、保密性好、抗干扰强。关键词：电度表，ADE7755，电能计量，AT89C52，IC卡Abstract:Thispaperintroducesthemicrocontroller-based,highreliability,easytoexpand,controlfunctions,lowvoltage,lowpowerconsumption,etc.Designofsingle-phaseelectronictypeICcardprepaidmeter.Mainlyusedinthedesignofsingle-phaseelectronicenergymetertoachievespecificintegratedchipADE7755energymeteringusersuse,reuseAT89C52microcontrollerasthecircuitcontrolcenter.InthedesignofenergymeasurementcircuitisrequiredbeforethefirstvoltageandcurrentsignalsarecollectedandthencarriedthroughenergymeteringICADE7755energymetering,themeasuredenergyspreadmicrocontroller,re-useICcardprepaidsystemsettings,andfinallyre-useLCDdisplay,Finally,throughtherealizationofthebasicrequirementsforsoftwaredebugging.Bythismethodthemeasuredenergyaccurate,andoverallsystemaccuracy,confidentiality,andstronganti-interference.Keywords:meter,ADE7755,energymetering,AT89C52,ICcard目录1前言...........................................................................................................................................................11.1电能表的发展..................................................................................................................................11.2电子式电能表的功能......................................................................................................................21.3预付费电能表的特点......................................................................................................................31.4预付费电能表的应用前景.............................................................................................................41.5选题背景..........................................................................................................................................52.总体方案设计.............................................................................................................................................62.1设计内容.........................................................................................................................................62.2方案设计..........................................................................................................................................62.2.1电能计量系统设计方案.......................................................................................................62.2.2预付费系统设计方案..........................................................................................................72.2.3显示器的设计方案..............................................................................................................92.3方案选择.............................................
