基于单片机的电能表自动抄表系统设计

说明：毕业设计（论文）模版（理工类学生用）燕山大学毕业设计（论文）基于单片机的电能表自动抄表系统设计学院里仁学院年级专业电子信息工程四班学生姓名赵全生指导教师孙洁娣专业负责人练秋生答辩日期燕山大学毕业设计（论文）任务书学院：系级教学单位：学号学生姓名专业班级课题题目来源主要内容基本要求参考资料周次1—4周5—8周9—12周13—16周17—18周应完成的内容指导教师：系级教单位审批：说明：如计算机输入，表题黑体小三号字，内容五号字。本任务书一式二份，教师、学生各执一份。摘要I摘要公共事业收费自动化和小区物业管理智能化等领域的技术开发和应用越来越受到人们的重视,本文研究旨在提供一种利用低压电力供电网络,低成本高可靠地实现公共事业收费自动化和小区物业管理智能化的技术应用.在本文介绍了一种基于MSP430单片机的复费率单相电能表的主电路及通信接口电路,给出了其具体电路,采用AD7755作为专用电量测量芯片以保证测量脉冲数的准确性,硬件日历时钟及参数存储采用总线器件以减少电路连线。综合设计使电能表的工作可靠性得到大大提高。同时对系统的软件设计和可靠性设计也作了介绍。关键词单片机,远程抄表,AD7755燕山大学本科生毕业设计（论文）IIAbstractTechniqueoftransmittingdataviapowerline(PL),anewtechniquedevelopedinrecentyears,isusedtoautomatizethefreecollectingsysteminpublicserviceandthemanagementofuptownservice.Thisarticlediscussedtheadvantage,disadvantageandthecurrentstateofthepowerlinecarriercommunication.Theadvantage,methodandcurrentstateofusingspreadspectrumtechniqueinpowerlinecommunicationarediscussed.Themaincontrolandcommunicatinginterfacecircuitsofthemulti-ratewatt-hourmeterbasedonMSP430singlechipisdiscussedindetailinthispaper.Theprincipleofthemulti-ratewatt-hourmeterisalsointroduced.Themeasuringofwatt-hourhashigheraccuracybythespecialAD7755.Addressesanddataoftheclock/calendaranddatastoragecircuitsaretransferredseriallyviathetwo-linebidirectionalI2Cbuswhichsimplifiescircuitandenhancesthereliability.SoftwareandreliabilitydesignofthissystemarealsomentionedKeywords:Singlechip;Remoterecording;AD7755III目录摘要.............................................................................................................IAbstract......................................................................................................II第1章绪论................................................................................................11.1课题背景...........................................................................................11.1.1自动抄表的发展现状.................................................................11.1.2研究成果....................................................................................3第2章自动抄表系统概述........................................................................32.1自动抄表系统结构说明...................................................................32.1.1电能表........................................................................................42.1.2网络通讯.....................................................................................42.1.2数据交换设备.............................................................................52.2系统的选择.......................................................................................62.2.1几种常见的系统组合方式........................................................62.2.2常见抄表方式的优缺点............................................................6第3章系统的工作原理............................................................................83.1电能表系统结构...............................................................................83.1.1时钟电路设计.............................................................................93.1.2电能计量电路...........................................................................103.1.3液晶显示电路..........................................................................103.1.4串行接口...................................................................................113.2数据集中器的结构原理图..............................................................123.2.1集中器硬件电路的设计...........................................................133.2.2与IC卡抄表器的接口电路.....................................................133.2.3电源模块..................................................................................143.3数据采集器的设计..........................................................................143.3.1数据采集器的结构原理图.......................................................14燕山大学本科生毕业设计（论文）IV3.3.2数据采集器的硬件电路设计...................................................14第四章系统软件设计..............................................................................194.1电能表的软件设计.........................................................................194.1.1软件设计思想..........................................................................194.1.2软件程序框图..........................................................................194.1.3系统抗干扰设计......................................................................204.2数据其中器的软件设计.............................................................204.2.1主程序设计............................................................................204.2.2电源管理程序的设计............................................................214.3数据采集器的软件设计.................................................................234.3.1主程序......................................................................................234.3.2通讯中断子程序.......................................................................244.3.3存储器操作子程序...................................................................264.3.4延时自程序...............................................................................26结论..............................................................................................