论文简介电能表

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1、基于非接触IC卡的预付费电能表的设计专业：口动化学号：07220530姓名：董彩红指导老师：潘峥蝶、朱翔职称：教授、讲师摘要IC卡预付费电能表采川先购电后川电的管理模式，在一定程度上解决了电力部门收取电费难的问题。然而IC卡预付费电能表存在许多问题，首先是山于电力部门缺乏对IC卡电能表用八的监管，难以发现和查处窃电行为；其次是IC卡易被污染和损坏，开放式卡口易被攻击导致内部系统混乱；再次是一表一卡的管理方式不适宜人员流动性人的场所。本设计的主要冃的是为了解决IC卡预付费电能表存在的问题。电力部门的悖理微机通过RS48

2、5网络对电能表进行管理，以防止用户窃电；选用射频卡作为用户卡以解决IC卡易彼污染和损坏以及开放式卡口易被攻击的问题；采用一表多卡和一卡多表的方式來满足人口流动性大的场所的用电管理。本次设计的换件选用AT89S52作为MCU,ADE7755作为电能计量芯片，MFRC500作为射频接口模块芯片，24LC256作为存储器，MAX7219作为LED显示接口芯片。软件采用模块化设计方案，总共分为四大模块：电能计量模块、声光报警模块、射频卡读写模块、黑黄名单验证模块。关键字：预付费电能表；射频识别技术；电能计量芯片ADE7755

3、AbstractPrepaymentICWatt-hourmeteradoptsthemodelthattheusersmustpaytheElectricityfirstandthenuseit,itsolvetheproblemwhichtheelectricdepartmentgatheredthepaymentsfromtheelectricusers・However,thePrepaymentICWatt-hourmeterexistsevereproblemofitselfown.Thefirst,the

4、electricdepartmentlackssupervisingandmanagingtotheseWatt-hourmeter,electriclarcenyisverydifficultbediscoveredandinvestigated;Thesecond,ICcardispollutedanddamagedeasily,anditiseasytobeattackthewithinsystemthroughtheexotericcardinterfaceandwillleadtothewithinsyst

5、emconfusion;Thethird,itisunaccommodatedinpublicplacethatameterrcad-writcacardonly.ThemainpurposeofthisdesignistosolvethedisadvantageofPrepaymentICWatt-hourmeter.Inordertopreventtheuserstealingtheelectricenergy,theelectricdepartment'smicrocomputercarriesontheman

6、agementthroughtheRS485networktotheWatt-hourmeter.Ittakestheradiofrequencycardasusercard,tosolvetheproblemwhichICispollutedanddamagedeasilyanditiseasytoattackthewithinsystemthroughtheexotericcardinterface;Itadoptone-to-manytomeettheneedofpublicplace'selectricman

7、age.ThisarticlefirstintroducestheWatt-hourmeter'sdevelopmentandapplicationinourcountry,andpointsouttheproblemofprepaymentICWatt-hourmeter,andexplainsthesignificanceandfunctionprincipleofthemulti-userWatt-hourmeterbasesonRFID.Secondly,itintroducesthedevelopmenta

8、ndfundamentprincipleoftheradiofrequencyrecognitiontechnology.Thirdly,thehardwareandsoftwareareintroduced.Finally,wecarryonthesoftwaresimulationforprogram.ThisdesigntakesAT89