目 录摘 要...................................................................................................................................................................1第 1 章 绪论........................................................................................................................................................2第 2 章 系统设计.................................................................................................................................................32.1 系统组成................................................................................................................................................32.1.1 计费及显示....................................................................................................................................32.1.2 时钟及显示......................................................................................................................................32.1.3 计费开始提示..................................................................................................................................12.2 功能模块设计........................................................................................................................................1第 3 章 硬件及软件实现.....................................................................................................................................33.1 传感器......................................................................................................................................................33.1.1 光电传感器电路设计....................................................................................................................33.1.2 车轮光电开关检测电路....................................................................................................................43.2 单片机.............................................................................................................
