传感器采集环境数据并在手机上显示
————传感器采集环境数据并在手机上显示
1.Android客户端 基于paho，连接指定的mqtt broker 地址，订阅主题，获取消息，将json字符串中的信息解析出来并显示 UI设计遵循MD
2.mqtt broker 服务器，运行mosquitto，负责消息转发和连接控制
3.汇聚节点 树莓派，将每个传感器节点采集的环境数据汇聚起来，并通过网络发送给mqtt broker 汇聚节点和传感器节点使用zigbee模块进行无线通讯
4.传感器节点 Arduino作为主控，连接DHT11温湿度传感器、pms5003空气质量传感器、zigbee模块 主控控制各传感器采集数据，将数据打包发送给汇聚节点
5.zigbee模块 根据固定的协议进行数据收发
6.TODO 在树莓派上增加数据库，将传感器采集的数据持久化 用机器统计算法预测雾霾指数 增加从手机到传感器节点的控制流
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