目录
摘要 ............................................................I
ABSTRACT .......................................................II
目录 ..........................................................III
前言 ...........................................................IV
1 绪论 ...........................................................1
1.1 设计方案 .................................................1
1.2 设计内容 .................................................2
2 功率计的工作原理与结构 ........................................3
2.1 功率表的定义 .............................................3
2.2 功率计的工作原理 .........................................3
2.3 功率计的结构框图 .........................................4
3 功率计的硬件设计 ...............................................5
3.1 电流电压的采样 ...........................................5
3.2 A/D 转换模块 .............................................6
3.3 单片机处理模块 ...........................................7
3.4 液晶显示模块电路 ........................................10
3.5 按键电路 ................................................11
3.5 电源模块电路 ............................................12
3.6 报警电路系统 ............................................12
4 功率计的硬件测试及问题 .......................................14
4.1 采样电路测量 ............................................14
4.2 按键电路的调试 ..........................................14
4.3 功率计的误差分析 ........................................14
4.4 解决办法 ................................................15
4.5 提高测量范围 ............................................15
5 软件的调试 ...................................................16
5.1 整体软件流程图 ..........................................16
5.2 软件程序的调试 ..........................................17
5.3 数据的校正 ..............................................17
结论 ...........................................................18
参考文献 .......................................................19
致谢 ...........................................................20
附录 1 整体电路图 ...............................................21
附录 2 程序 .....................................................22
