超声波液位仪毕业设计

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1、超声波液位仪毕业设计目录摘要...............................................................IABSTRACT...........................................................I前言...............................................................I1绪论..........................................................11.1课题背景.................

2、.......................................11.1.1超声波液位仪的研究背景与内容.................................11.1.2超声波液位仪的现状..........................................11.2论文研究内容..................................................21.2.1研究内容....................................................21.2.2论文的章节安排..............

3、................................32超声波的液位测量原理...........................................52.1超声液位仪理论基础............................................52.1.1超声波介绍..................................................52.1.2超声波探头的结构和原理......................................52.1.3T/R40-16超声波探头...................

4、.......................72.1.4传感器的指向角Θ............................................82.2超声波液位仪工作原理..........................................92.2.1超声波液位仪工作原理........................................92.2.2测量盲区...................................................102.3本章小结...................................

5、.................113硬件总体设计.................................................123.1超声液位仪总体设计...........................................123.2单片机电路...................................................143.2.1复位电路设计...............................................153.2.2电源电路设计................................

6、...............163.2.3时钟振荡器.................................................173.3发射电路.....................................................183.4接收电路......................................................193.5液晶显示电路.................................................203.6蜂鸣报警电路..........................

7、........................213.7对电路板进行合理设计...........................................233.8本章小结.....................................................254系统软件设计................................................264.1软件总体设计