1基于单片机的超声波测水位报警系统1系别：机电工程系专业班级：机械电子工程1406班姓名学号：史贵鑫10赵彪20穆冠文26李鼎37吴晨晨38指导教师：薛伟时间：2017.12.252目录摘要...............................................................................................................................................11绪论.........................................................................................................................................21.1项目研究背景及意义.................................................................................................22总体设计方案及论证.............................................................................................................22.1总体方案设计.............................................................................................................23硬件实现及单元电路设计.....................................................................................................33.1主控制模块.................................................................................................................33.2电源设计.....................................................................................................................43.3超声波测试模块.........................................................................................................43.3.1超声波的特性.................................................................................................53.3.2超声波换能器.................................................................................................63.4超声波传感器原理.....................................................................................................83.5测距分析..................................................................................................................123.6时钟电路的设计.......................................................................................................133.7复位电路的设计.......................................................................................................133.8声音报警电路的设计...............................................................................................143.9显示模块...................................................................................................................144软件设计...............................................................................................................................154.1主程序工作流程图...................................................................................................155总结.......................................................................................................................................176参考文献...............................................................................................................................17附录...........................................................................................................................................18附件1：原理图..........................................................................................................................18附件2：程序..............................................................................................................................19附件3：元件清单................................................................
