目录
第一章 引言 .............................................................................................................................1
第二章 总体方案设计 .............................................................................................................2
2.1 方案比较 ........................................................................................................................2
2.2 方案论证 ........................................................................................................................2
2.3 方案选择 ........................................................................................................................3
第三章 系统设计及理论分析 .................................................................................................3
3.1 频率计方案概述.............................................................................................................3
3.2 单片机 ............................................................................................................................4
3.3 放大器电路 ....................................................................................................................5
3.4 比较器电路 ....................................................................................................................5
3.5 计数器电路 ....................................................................................................................5
3.5 软件设计 ........................................................................................................................6
3.5 程序框图 ........................................................................................................................6
第四章 测试方案与测试结果 .................................................................................................7
4.1 测试方案 ........................................................................................................................8
4.2 测试条件与仪器 ............................................................................................................8
4.3 测试结果与分析 ............................................................................................................9
第五章 参考文献 ...................................................................................................................10
附录 1 电路原理图 ................................................................................................................11
