3.1 数据处理及传输模块电路设计 ···························································· 9

3.2 数据采集电路设计 ··········································································· 11

3.2.1 温湿度测量电路设计 ···································································· 12

3.2.2 光照强度测量电路设计 ································································· 13

3.2.3 二氧化碳浓度测量电路设计 ··························································· 15

3.2.4 土壤水分测量电路设计 ································································· 16

3.3 串口通信电路设计 ··········································································· 17

3.4 开关量驱动控制电路设计 ································································· 18

3.5 本章小结 ························································································· 18

4 系统程序设计 ······················································································· 20

4.1 ZigBee组网程序设计 ········································································ 20

4.1.1 ZigBee网络层 ············································································· 20

4.1.2 Z-Stack协议栈 ············································································ 21

4.1.3 协调器节点与终端节点程序设计 ····················································· 22

4.2 数据采集程序设计 ··········································································· 23

4.2.1 温湿度采集程序设计 ···································································· 24

4.2.2 光照采集程序设计 ······································································· 25

4.3 PC端监控软件 ················································································· 26

4.4 本章小结 ························································································· 26

5 系统测试 ······························································································· 28

6 总结 ······································································································· 31

致 谢 ········································································································· 32

参考文献 ·································································································· 33