基于光声传感器的道边空气质量监测站设计

Design of roadside air quality monitoring stations based on photoacoustic sensors

道边空气污染问题日益严重,为了适应道路空气质量监测的需要,设计了基于光声传感器的道边空气质量监测站,介绍了系统的工作原理、硬件原理图、软件流程图以及GPRS数据传输流程图,并着重介绍了光声传感器的原理和设计。监测站采用基于气体光声光谱原理的光声传感器检测道边环境中污染气体的浓度,并通过LCD显示屏显示监测结果,同时通过GPRS通信网络将数据传输给监控中心用于研究,整个监测站具有体积小、成本低、实时性和自动监测的特点,便于应用于道边环境监测。

In recent years,the problem of roadside air pollution has become increasingly severe. To meet the needs of monitoring roadside air, this article designs roadside air quality monitoring stations based on photoacoustic sensors, introduces the system＇s working mechanism, the hardware schematic diagram, the software flow chart as well as the GPRS data transmission flow chart, and emphasizes the principles as well as the design of photoacoustic sensors. Making use of photoacoustic sensors based on gas pbotoacoustic spectroscopy principle, the monitoring stations can detect the concentration of gas pollution in the roadside environment, display the results through LCD screens, and transmit the data to monitoring center for research through GPRS telecommunication network. Small in volume,low in cost, timely and automatic in monitoring, the monitoring stations can be easily used for roadside environment detection.