目 录
摘 要 .............................................................................................................................................I
Abstract ........................................................................................................................................II
第一章 绪言.................................................................................................................................1
第一节 总体方案..................................................................................................................1
第二章 硬件电路的设计.............................................................................................................2
第一节 超声模块电路..........................................................................................................2
第二节 液晶显示电路..........................................................................................................6
第三节 语音输出电路..........................................................................................................7
第四节 无线模块电路设计..................................................................................................8
第三章 软件设计.........................................................................................................................9
第四章 结语...............................................................................................................................11
致 谢...........................................................................................................................................12
参考文献.....................................................................................................................................13
