徐 州 工 程 学 院 毕 业 设 计 (论 文 )
目 录
1 绪论 .............................................................................................................................................1
1.1 选题的背景和意义 ...............................................................................................................1
1.2 国内外发展形势 ...................................................................................................................1
1.3 本系统主要完成的任务 .......................................................................................................2
2 系统硬件设计 .............................................................................................................................3
2.1 系统硬件结构 ......................................................................................................................3
2.2 AT89C51 单片机模块 ...........................................................................................................3
2.3 超声波测距模块 ..................................................................................................................5
2.3.1 超声波简介 ....................................................................................................................5
2.3.2 HC-SR04 超声波传感器 ................................................................................................6
2.3.3 HC-SR04 超声波传感器测距原理 ................................................................................7
2.3.4 HC-SRO4 超声波模块电路图 ........................................................................................8
2.4 LCD1602 显示模块 ...............................................................................................................8
2.4.1 LCD1602 显示器介绍 ....................................................................................................8
2.4.2 1602LCD 指令说明及其时序 ......................................................................................10
2.5 电源模块 ............................................................................................................................11
2.6 按键模块 ............................................................................................................................11
2.7 报警模块 ............................................................................................................................12
2.8 抽水系统模块 ....................................................................................................................13
2.9 整体电路图 ........................................................................................................................13
3 系统软件设计 ...........................................................................................................................17
3.1 系统工作原理 ....................................................................................................................17
3.2 主程序流程图 ....................................................................................................................17
3.3 超声波测距模块设计 ........................................................................................................18
3.3 按键模块设计 ....................................................................................................................20
3.4 报警模块设计 .....................................................................................................................20
4 软件制作与调试 .......................................................................................................................22
4.1 软件制作 ............................................................................................................................22
4.2 软件调试 ............................................................................................................................22
5 硬件制作与调试 .......................................................................................................................24
5.1 硬件制作 ............................................................................................................................24
5.2 硬件调试 ............................................................................................................................24
