目 录
摘 要..................................................................................................................................................I
ABSTRACT ..........................................................................................................................................II
第一章 引 言 ..................................................................................................................................1
1.1 智能电表应用的意义 .....................................................................................................................1
1.2 智能电表的发展...............................................................................................................................1
第二章 总体方案设计................................................................................................................3
2.1 方案比较.............................................................................................................................................3
2.2 方案选择.............................................................................................................................................6
第三章 器件介绍和单元模块设计......................................................................................7
3.1 器件介绍.............................................................................................................................................7
3.1.1 AT89C51 单片机 ......................................................................................................................7
3.1.2 ADE7758 .....................................................................................................................................7
3.1.3 DS12887 .....................................................................................................................................9
3.1.4 LCD1602 ...................................................................................................................................10
3.1.5 SLE4442 ...................................................................................................................................12
3.2 单元模块设计 .................................................................................................................................12
3.2.1 电源模块电路 .......................................................................................................................12
3.2.2 信号采集电路 .......................................................................................................................14
3.2.3 计量模块.................................................................................................................................15
3.2.4 时钟及 LCD 显示模块.........................................................................................................16
3.2.5 接触式 IC 卡模块 ................................................................................................................18
第四章 软件设计 ........................................................................................................................20