本科毕业设计基于单片机的超声波测距仪的设计学 院：专 业：学 号：姓 名：指导老师：职 称：目 录第 1 章 绪论..........................................................................................................................11.1 课题讨论的背景........................................................................................................11.2 课题讨论的意义........................................................................................................11.3 论文结构....................................................................................................................1第 2 章 超声波测距原理....................................................................................................22.1 超声波简介................................................................................................................22.2 超声波测距原理........................................................................................................3第 3 章 方案论证................................................................................................................53.1 设计思路....................................................................................................................53.2 系统结构设计............................................................................................................6第 4 章 硬件电路设计........................................................................................................74.1 单片机 AT89C52.......................................................................................................74.2 超声波测距模块 HY-SR05………………………………………………………..94.3 温度传感器 DS18B20.............................................................................................104.4 LCD1602 液晶.................................................................................................114.5 ISD1420 语音芯片.....................................
