51单片机超声波测距电子设计

51单片机超声波测距电子设计

绪论···························································1 I.1 课题设计的目的及其意义·································1 I.2 超声波测距仪的设计思路·································1

I.3 课题设计的任务和要求···································2 1 课题的方案设计与论证···········································3 1.1 系统整体方案的设计·····································3 1.2 系统整体方案的论证·····································3 2 系统的硬件结构设计·············································4 2.1 单片机的功能特点及测距原理·····························4 2.2 超声波发射电路·········································6 2.3 超声波检测接收电路·····································7 2.4 超声波测距系统的硬件电路设计···························7 3 系统软件的设计·················································9 3.1 超声波测距仪的算法设计·································9 3.2 主程序流程图···········································10 3.3 超声波发生子程序与超声波接受中断程序···················11

3.4 系统的软硬件的调试·····································12 总 结····························································13 致 谢····························································15 参考文献··························································16 附 录 一 超声波测距电路原理图··································18 附 录 二 超声波测距电路版图····································19 附 录 三 程序清单··············································20