基于单片机的电流电压测量系统设计目录1前言.........................................................................................................................................21.1电子测量概述...............................................................................................................21.2数字电压表的特点.......................................................................................................31.3单片机的概述...............................................................................................................32系统方案的选择与论证.........................................................................................................42.1功能要求.......................................................................................................................42.2系统的总体方案规划...................................................................................................52.3各模块方案选择与论证...............................................................................................52.3.1控制模块.....................................................52.3.2量程自动转换模块.............................................62.3.3A/D转换模块..................................................62.3.4显示模块.....................................................62.3.5通信模块.....................................................73系统的硬件电路设计与实现.................................................................................................73.1系统的硬件组成部分...................................................................................................73.2主要单元电路设计.......................................................................................................83.2.1中央控制模块................................................83.2.2量程自动转换模块............................................93.2.3A/D模数转换模块............................................133.2.4显示模块...................................................153.2.5通信模块...................................................153.2.6电源部分...................................................164系统的软件设计...................................................................................................................174.1软件的总体设计原理.................................................................................................174.1.1A/D转换程序设计............................................184.1.2数字滤波程序设计...........................................184.1.3量程自动转换的程序设计.....................................205系统调试及性能分析...........................................................................................................225.1调试与测试.................................................................................................................225.2性能分析.....................................................................................................................226结束语...................................................................................................................................236.1设计总结......................................................................................................................236.2设计的心得.............................................................
