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1、基于单片机控制的智能电表抄表系统摘要近年来,随着单片机成本的降低、通信技术的快速发展以及通信技术的多样化,单片机控制结合通信技术,被越来越频繁的运用到人们的生活中。随着我国电网建设不断的深入进行,家用电表数量急剧上升,传统的人力抄表方式费时效率低,而且准确性不高,这个传统的方式已经不符合当今电力改革的要求,研究出智能电表抄表系统是必然的趋势。本论文研究的是“基于单片机控制的智能电表抄表系统”。电表抄表系统采用ST意法半导体单片机STM32F103C8T6和电力载波通信芯片ST7540,以及电力载波电路和电平转换电路等外围电路。在单片机控制下,结合FSK调制
2、解调通信技术的电表抄表系统的硬件和软件实现,绘制对应的电路原理图并且实现、编写单片机代码和反复进行软硬件调试等一系列的相关工作,最终做成抄表电路板和软件管理系统。该系统具有可靠性高、可扩展性强、成本费用低、计量准确等特点。主要用于电能信息的自动抄录,实现了居民住宅的电量自动检测、收费和管理。关键词:智能电表抄表系统;单片机STM32F103C8T6;ST7540;MAX232AbstractInrecentyears,withtherapiddevelopmentofcommunicationtechnology,thediversificationtor
3、educechipcostandcommunicationtechnology,microprocessorcontrolwithcommunicationtechnology,ismoreandmorefrequentlyusedinpeople'slives.WiththedeepeningofChina'spowergridconstructionhasbeenasharpriseinthenumberofhouseholdelectricmeter,meterreading,humantraditionaltime-consumingloweffi
4、ciency,andtheaccuracyisnothigh,thetraditionalwaycannotmeettherequirementsofthereformofelectricpower,smartmeterreadingsystemistheinevitabletrendof.Theresearchofthispaperisthe"smartmeterreadingsystembasedonsinglechipmicrocomputer".AutomaticmeterreadingsystembasedonSTsinglechipmicroc
5、omputerSTM32F103C8T6andmeaninglawsemiconductorpowerloadandpowerlinecarriercommunicationchipSTM7540,circuitandvoltageconversioncircuitandsoon.Underthecontrolofthemicrocontroller,combinedwiththeautomaticmeterreadingsystemB-PSKmodulationanddemodulationofcommunicationtechnology,therea
6、lizationofhardwareandsoftware,circuitschematicdrawing,andthecorrespondingprogramandrepeateddebuggingofhardwareandsoftwareofaseriesofrelatedwork,andultimatelymakethemeterreadingcircuitboardandsoftwaremanagementsystem.Thesystemhashighreliability,scalability,lowcost,accuratemeasureme
7、ntetc..Mainlyusedinautomatictranscribingelectricityinformation,theautomaticdetection,residentialelectricitychargeandmanagement.KeyWords:Thesmartmeter readingsystem; STM32F103C8T6MCU; ST7540; MAX232目录1绪论12总体方案设计32.1电表抄表系统功能介绍32.2电路模块设计42.3电路所涉主要元器件的功能介绍52.3.1STM32F103C8T6单片机芯片52.3.
8、2ST7540电力线载波modem芯片的使用82.3.3MAX23