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目录
第 1 章 绪论................................................................................................................1
1.1 课题研究的目的和意义...............................................................................1
1.1.1 课题研究的目的................................................................................1
1.1.2 课题研究的意义................................................................................1
1.2 国内外的研究现状及发展趋势...................................................................1
1.2.1 国内外的研究现状............................................................................1
1.2.2 发展趋势............................................................................................2
1.3 本课题研究的内容.......................................................................................2
第 2 章 总体方案设计与分析....................................................................................3
2.1 系统原理框图...............................................................................................3
2.2 方案选择.......................................................................................................3
2.2.1 单片机的选择....................................................................................3
2.2.2 传感器的选择....................................................................................4
2.3 产品工作原理...............................................................................................4
第 3 章 硬件电路的设计 ............................................................................................6
3.1 单片机最小系统设计...................................................................................6
3.1.1 单片机时钟电路设计........................................................................6
3.1.2 单片机复位电路设计........................................................................6
3.2 电源指示电路设计.......................................................................................7
3.3 信号采集电路设计.......................................................................................7
3.4 显示部分电路设计.......................................................................................8
3.5 语音播报电路设计.....................................................................................10
第 4 章 软件设计 ......................................................................................................11
4.1 系统软件设计的整体思想框图.................................................................11
4.2 主程序的设计.............................................................................................11
总结..............................................................................................................................13
致谢..............................................................................................................................14
参考文献......................................................................................................................15
附录 I...........................................................................................................................16
附录 II.........................................................................................................................28