一种集成化教室空气感知系统的设计与实现

Design and implementation of an integrated classroom air perception system

针对高密度人群教室空气质量差导致学生学习效率低和损害学生身心健康的问题,设计了一种集成化的教室空气感知系统。首先,阐述了集成化教室空气感知系统的整体设计;其次,基于模块化设计方法,分别详细设计了感知PM2.5、PM10、甲醛浓度、挥发性有机物、二氧化碳浓度等数据的采集模块,主控制模块、电源模块与液晶显示模块等硬件电路,并完成了硬件模块的软件设计。经过系统标定与联调测试,系统能准确感知教室空气中PM2.5、PM10、二氧化碳、甲醛、挥发性有机物的浓度等,且稳定性良好。该系统能广泛应用于中小学及高校教室,对改善教室空气具有一定的应用价值。

To solve the issue of poor air quality in high-density classrooms, which leads to low learning efficiency and hurts the physical health, we design an integrated perception system. First of all, this paper elaborates the overall design of the integrated classroom air perception system. Secondly, the hardware circuits of indoor and outdoor data acquisition module, main control module, power supply module and liquid crystal display module are designed by modular design approach. Meanwhile, software programs are designed for the corresponding modules. After the software and hardware joint debugging of the system, it can not only display the perceived concentration of PM2.5, PM10, carbon dioxide, formaldehyde, volatile organic compounds, but also has good stability. The system can be applied to the classrooms of school, and has certain application value for making air better.