文档介绍：基于ADE7755的二时段单相数字电能表设计摘要Abstract目录绪论·········································课题研究背景及意义····························课题研究背景····························课题研究意义····························数字电能表的发展和现状························电能表发展历程··························数字电能表未来发展趋势··················本文主要研究内容·····························电能计量原理及多功能电能表通信规约的介绍·····数字电能表的电能计量原理和方法············多功能电能表通信规约的介绍················本章小结································基于ADE7755的计量模块硬件设计·············电能计量芯片ADE7755的简介·············功能简介及功能框图·················外部引脚及其功能说明················电能计量过程介绍························ADE7755工作原理···················电能计量电路设计····················单相数字电能表的系统硬件设计··············系统的总体设计····························系统总体设计思路·······················电能计量电路的基本组成·················电源模块设计······························控制模块设计·······························单片机8051简介························控制电路设计························LCD显示模块设计···························LCD显示器工作原理简介··············芯片1602简介························显示电路设计·························通信接口模块设计····························51单片机的串行通信基础·········RS232串行口标准简介··············MAX232简介························通信接口电路设计····················数据存储模块设计··························芯片24C02简介·····················存储模块电路设计···················时钟芯片································DS1302简介时钟电路设计单相数字电能表的系统软件设计·············软件集成开发环境简介·········KeilC51μVision3介绍编程语言选择数字电能表系统软件的总体设计············系统软件主程序设计······················电能计量模块····························LCD显示模块······························数据存储模块······························时钟芯片································课题结论与展望···························参考文献········································绪论课题研究背景及意义课题研究背景传统的感应式机械电能表从1890年发明以来已经有一百多年历史,虽然经过多方面改进,但仍然存在个突出问题:①工作不稳定,精度低,内部的转动元件难免产生机械磨损,使电能表测量误差越来越大;②体积庞大,价格昂贵;③由于构造原理的问题,很容易窃电。于是新型的数字式电能表应用而生。数字式电能表可视性强,大致可分为以下两类。第一类是在原来机械式电能表的基础上,仅在表盘上打一个很小的光电检测孔,表盘每转一圈给出一个脉冲信号,经放大和整形后,作为计数脉冲,所计的客户用电量通过数码管或LCD显示出来。这种电能表只是改变了其计数显示方式,没有脱离传统感应式机械电能表的本质,机械磨损还存在,精度低,不稳定,所以完全被淘汰。第二类是利用传感器来采样电流、电压,然后把采样到的电流、电压