摘要
为实现空气质量在线实时监测目的,设计了一种基于Wi-Fi的空气质量监测无线传感器系统。采用STM32F103微处理器,串口接入电化学气体传感器采集数据,TFT式显示屏显示各气体数据,自定义了可拓展的数据通信协议,可通过Web下发Wi-Fi账户和密码,满足多种空气质量监测场景需求。实验测试结果表明:数据在线传输稳定,网络异常条件下,在通信恢复后实现稳定的数据补传。
A wireless sensor system for air quality monitoring based on Wi-Fi is designed to achieve the purpose of online real-time monitoring of air quality. The STM32F103 microprocessor unit is the core processor and data are collected by electrochemical gas sensor through serial port. All the gas data are displayed on TFT display screen. The expansible data communication protocol is self-defined,and the Wi-Fi accounts and passwords can be sent through the Web to meet the needs of a variety of air quality monitoring scenarios. Experimental results show that the online data transmission is stable and the collected data can be reloaded as the disconnected network is recovered.
引文
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