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1、中文摘要摘要随着国民经济的迅速发展，社会用电量日益增加，传统意义上的感应式机械电能表已经渐渐地跟不上社会的步伐，给供电管理部门的集中管理带来诸多不便。本文采用专业电能计量芯片,以单片机为系统核心，设计了一款多功能预付费单相电能表，有效地解决了偷电、漏电、管理混乱、人工抄表等诸多问题。本文主要完成以下设计:1.选用高精度防窃电电能表专用电能计量芯片RN8209和NEC系列单片机UPD78F0526，完成电表计量部分和主控电路的设计；2.电源模块为电能表各模块提供电源，直接采用变压、整流、稳压的方法完成电源部分的设计；3.通信模块是电能表
2、与外界设备进行数据交换的场所，本文完成485通信和红外通信的设计；4.同样是采用模块化的方法，完成数据存储模块、显示模块、时钟模块和电能采样模块的研究与设计；5.根据电能表系统的功能，给出相应的软件流程设计。通过多功能预付费单相电能表的硬件电路和软件流程的设计，实现了电表的基本功能。关键词：多功能预付费电能表，单片机，电能计量芯片，模块化，软件流程I英文摘要AbstractAlongwiththenationaleconomyrapiddevelopment,thesocialelectricityconsumptionincreas
3、esdaybyday,inthetraditionalsignificanceinduction-typemechanicalelectricalenergytablealreadygraduallycouldnotfollowthesocialstep,broughtmanyinconveniencesforthepowersupplycontrolsection'scentralizedmanagement.Thisarticleinaprofessionalenergymeteringchip,toformthecorefort
4、hesystem,designedamulti-purposeprepaidsingle-phasepower,effectivelytoaddresstheelectricity,leakage,poormanagement,andartificialmeter,andmanyotherissues.Inthispaper,completethefollowingdesign:1.Selectsthehighaccuracytoguardagainststealselectricityelectricalenergytablespe
5、cial-purposeelectricalenergymeasurementchipRN8209andNECseriesmonolithicintegratedcircuitUPD78F0526,completestheelectricinstrumentmeasurementpartandthemastercontrolelectriccircuitdesign;2.Thepowersourcemoduleprovidesthepowersourcefortheelectricalenergytablevariousmodules
6、,usesthelivepressure,therectification,theconstantvoltagemethoddirectlycompletesthepowerunitthedesign;3.Communicationmoduleisadevicefordataexchangewiththeoutsideworldforelectricenergymetersite,thisarticleiscompleteand485communicationsinfra-redcommunicationdesign;4.Thesam
7、emodularapproachtocompletethedatastoragemodule,displaymodule,clockmoduleandpowersamplingmoduleresearchanddesign;5.Accordingtotheelectricalenergytablesystemfunction,givesthecorrespondingsoftwareflowdesign.Throughthemulti-purposepre-paymentsingle-phaseelectricalenergytabl
8、ehardwareelectriccircuitandthesoftwareflowdesign,hasrealizedtheelectricinstrumentbasicfunction.Keywords:multif
