目 录
摘要.............................................................................................................................1
1 绪论.......................................................................................................................2
1.1 项目研究背景及意义........................................2
1.2 课题现状 2
2 总体设计方案及论证...........................................................................................3
2.1 总体方案设计............................................................................................3
3 硬件实现及单元电路设计...................................................................................4
3.1 设计原理....................................................................................................4
3.2 设计方案....................................................................................................5
3.3 传感器模块................................................................................................5
3.3.1 传感器的选择.................................................................................5
3.4 系统工作原理............................................................................................6
3.5 水位显示电路............................................................................................7
3.6 外部晶振时钟电路的设计 ..................................................................12
3.7 时钟电路的设计......................................................................................13
3.8 自动报警电路..........................................................................................13
3.9 中央处理器模块......................................................................................14
3.10 继电器控制模块......................................................................................14
3.11 水位检测系统仿真图 14
4 软件设计.............................................................................................................15
4.1 主程序工作流程图..................................................................................15
5 总结 .....................................................................................................................15
6 参考文献 .............................................................................................................15
附 录 .........................................................................................................................16
附件 1：原理图 ........................................................................................................16
附件 2：仿真图 ........................................................................................................16
附件 3：元件清单 ....................................................................................................17
附件 4：程序............................................................................................................18
