目 录
中文摘要................................................................................................................................................I
英文摘要...............................................................................................................................................II
1 绪论......................................................................................................................................................1
2 WB 系列交流电量传感器.........................................................................................................2
2.1 概述.........................................................................................................................................2
2.2 WB 交流电量传感器的工作原理.............................................................................2
2.3 传感器型号及技术指标..............................................................................................3
3 硬件系统的设计..........................................................................................................................4
3.1 硬件框图..............................................................................................................................4
3.2 控制电路的设计..............................................................................................................5
3.2.1 单片机的选择...............................................................................................................5
3.2.2 模数转换部分的设计 ...............................................................................................11
3.2.3 A/D 转换器概述及单片机接口的一般特点.....................................................11
3.2.4 ADC0809 简介.............................................................................................................12
3.3 键盘输入部分 .................................................................................................................15
3.3.1 矩阵式键盘 ..............................................................................................................15
3.3.2 独立式键盘 ..............................................................................................................15
3.3.3 LED 显示部分...........................................................................................................16
3.4 LED 的动态显示方式................................................................................................16
3.4.1 LED 静态显示方式..................................................................................................17
3.4.2 74HC595 简介...........................................................................................................17
3.4.3 键盘及显示电路.....................................................................................................19
