基于单片机的家庭智能浇花器设计毕业论文.doc

1 绪论........................................................................5

1.1 选题的目的和意义..........................................................5

1.2 课题的国内外发展现状......................................................5

1.3 课题的主要研究内容 ........................................................5

2 相关基础知识................................................................7

2.2.5 传感器的通讯...........................................................13

3 硬件电路设计...............................................................17

3.1 系统总体设计思路.........................................................17

3.2 系统硬件电路设计.........................................................17

3.2.1 控制电路...............................................................18

3.2.2 显示电路...............................................................18

3.2.3 按键中断...............................................................19

3.2.4 电阻式土壤湿度测量电路.................................................20

3.3 常见的土壤测量方法.......................................................21

4 软件系统设计...............................................................23