出租车计价器课程设计(论文)

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1、百色职业学院毕业论文毕业论文出租车计价器课程设计摘要：出租车计价器是乘客与司机双方的交易准则，它是出租车行业发展的重要标志，是出租车中最重要的工具。它关系着交易双方的利益。具有良好性能的计价器无论是对广大出租车司机朋友还是乘客来说都是很必要的。因此，汽车计价器的研究也是十分有一个应用价值的。而采用模拟电路和数字电路设计的计价器整体电路的规模较大，用到的器件多，造成故障率高，难调试，对于模式的切换需要用到机械开关，机械开关时间久了会造成接触不良，功能不易实现。而采用单片机进行的设计，相对来说功能强大，用较少的硬件和适当的软件相互配合可以很容易的实现设计要求，且灵活性强，可以通过软件编程来完成

2、更多的附加功能。针对计费模式的切换，通过软件编程就可以轻易而举的实现。避免了机械开关带来的不稳定因素。另外在本方案中那个使用了点阵的液晶，可以实现更加友好的使用界面。数据信息一目了然，并且即使是成品也可以方便的修改使用界面，更可根据不同的公司客户使用不同的局面……第ii页共20页百色职业学院毕业论文目录摘要…………………………………………………………………………Ⅰ第1章引言··································································11.1出租车计价器概述································

3、·········································11.2本设计任务···················································································11.2.1设计任务·················································································11.2.2设计要求································································

4、·················11.3系统主要功能···············································································2第2章出租车计价器硬件设计·················································32.1系统的硬件构成及功能····································································32.2AT89S51单片机及其引脚说明···························

5、·······························42.3AT24C02引脚图及其引脚功能···························································6百色职业学院毕业论文2.4AT24C02掉电存储单元的设计·························································62.5里程计算、计价单元的设计·····························································72.6数据显示单元设计············

6、······························································8第3章系统软件设计···························································103.1系统主程序设计············································································103.2定时中断程序设计··································································

7、······123.3里程计数中断服务程序设计····························································123.4中途等待中断服务程序设计····························································123.5键盘服务程序设计·······································