基于ADE7758的数字电流表设计毕业设计（论文）题目：基于ADE7758的数字电流表设计（英文）：DesignofDigitalAmmeterBasedOnADE7758院别：专业：姓名：学号：指导教师：日期：2010年5月基于ADE7758的数字电流表设计摘要针对利用常规ADC0809芯片设计电流表存在着检测精度低、测量复杂的缺陷，提出了一种新型数字式电流表的设计方案。该方案采用新型多功能电能专用芯片ADE7758和电流互感器，结合STC89C52芯片进行设计，大大简化了电路，提高了电流计量精度。经实验室多次实测，系统工作稳定可靠，实测数据的相对误差在1%以内。文中给出了系统硬件电路设计及软件编程。关键词：ADE7758；STC89C52；电流互感器；智能计量l基于ADE7758的数字电流表设计DesignofDigitalAmmeterBasedOnADE7758ABSTRACTForusingconventionalADC0809chipdesignammeterwithalowdetectionprecisionandcomplexmeasurementdefects,thatputsforwardthedesignschemeofanewtypeofdigital.Theschemehasthenewtypeofmulti-functionofspecialschipADE7758electricpowerandcurrenttransformer,whichcombinedwithSTC89C52chip,.Itwouldgreatlysimplifiesthecircuitandimprovetheprecisionofcurrentmeasurement.AfterLaboratorymeasuredmanytimes,wewouldmakethedecisionthatthesystemworkstableandreliable,andithas1%relativeerrorinthemeasureddata.Thesystemhardwarecircuitdesignandsoftwareprogrammingarealsogiveninthispaper.ammeter.。keyword:ADE7758;STC89C52;CurrentTransformer;IntelligentMetering基于ADE7758的数字电流表设计目录1绪论....................................................................11.1课题背景及意义......................................11.2国内外发展状况........................................21.3系统设计要求..........................................32系统总体设计...........................................................42.1系统结构框图...........................................42.2元器件选择...............................................52.2.1计量芯片的选择......................................52.2.2单片机的选择........................................82.2.3显示器件的选择......................................82.2.4电流互感器的选择.................................93系统主要硬件电路设计.................................................103.1信号调理电路........................................103.2与单片机通信电路...................................113.3显示电路.................................................123.4电源供电要求..........................................134系统主要程序设计.....................................................144.1主程序的设计..........................................144.2计量模块的设计......................................154.3显示模块的设计......................................175系统调试..............................................................195.1软件调试...............................................195.2硬件调试...............................................195.3调试分析...............................................226结束语................................................................23参考文献.................................................................24致谢.....................................................................25附录A实物图..........................................................26附录B系统原理图......................................................27附录C程序清单........................................................28基于ADE7758的数字电流表设计1绪论1.1课题背景及意义高精度三相电流表的国内研究和研制起步比较晚，以前主要依靠进口。90年代...
