基于单片机的ATX电源智能检测仪的设计-毕业论文(设计).doc
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基于单片机的 ATX 电源智能检测仪的设计
基于单片机的 ATX 电源智能检测仪的设计
目 录
摘 要..........................................................................................................................1
关键词........................................................................................................................1
Abstract ......................................................................................................................1
Key word....................................................................................................................1
引言............................................................................................................................2
1. 设计内容及要求.....................................................................................................3
2. 整体方案设计和论证.............................................................................................4
2.1 ATX 电源工作原理.......................................................................................4
2.2 整体方案设计与论证....................................................................................6
2.2.1 整体方案设计......................................................................................6
2.2.2 整体方案的论证..................................................................................6
2.3 各模块的介绍................................................................................................8
2.3.1 直流电源模块......................................................................................8
2.3.2 单片机模块..........................................................................................8
2.3.3 数据采集模块......................................................................................9
2.3.3 开关模块............................................................................................13
2.3.4 显示模块............................................................................................18
3. 硬件电路...............................................................................................................20
3.1 电源模块......................................................................................................20
3.2 单片机模块..................................................................................................21
3.3 AD 模块 .......................................................................................................22
3.4 与电脑电源的衔接模块..............................................................................22
4. 软件设计...............................................................................................................24
4.1 系统总的流程图..........................................................................................24
4.2 CD4051 控制子程序 ...................................................................................24
4.3 AD 转换子程序 ...........................................................................................25
4.4 显示子程序..................................................................................................26
5. 调试.......................................................................................................................28
5.1 AD 芯片与下载线的影响 ...........................................................................28
5.2 AD 的时序 ...................................................................................................28
5.3 AD 数据高低位 ...........................................................................................29
5.4 CD4051 的正常工作电压 ...........................................................................29
6. 结论.......................................................................................................................30
参考文献......................................................................................................................30
致谢..............................................................................................................................32
附录..............................................................................................................................33
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