目 录
第 1 章 绪论........................................................................................................................1
1.1 课题研究的背景......................................................................................................1
1.2 课题研究的意义......................................................................................................1
1.3 论文结构..................................................................................................................1
第 2 章 超声波测距原理....................................................................................................2
2.1 超声波简介..............................................................................................................2
2.2 超声波测距原理......................................................................................................3
第 3 章 方案论证................................................................................................................5
3.1 设计思路..................................................................................................................5
3.2 系统结构设计..........................................................................................................6
第 4 章 硬件电路设计........................................................................................................7
4.1 单片机 AT89C52.....................................................................................................7
4.2 超声波测距模块 HY-SR05………………………………………………………..9
4.3 温度传感器 DS18B20...........................................................................................10
4.4 LCD1602 液晶.......................................................................................................11
4.5 ISD1420 语音芯片 ................................................................................................12
第 6 章 软件设计..............................................................................................................14
6.1 主程序流程............................................................................................................14
6.2 子程序设计............................................................................................................16
6.2.1 超声波发送子程序及超声波接收中断子程序 .................................................16
6.2.2 测温子程序 .........................................................................................................17
6.2.3 距离计算子程序 .................................................................................................18
6.2.4 显示子程序和键盘扫描子程序 .........................................................................18
结 论..................................................................................................................................28
参考文献..............................................................................................................................29
致 谢..................................................................................................................................31
附录 1 整体电路图...........................................................................................................32
附录 2 程序清单...............................................................................................................33
附录 3 外文复印件...........................................................................................................41
附录 4 外文译文...............................................................................................................44
实习报告..............................................................................................................................46
