大型场馆无线空气质量监测技术及应用

Development of wireless air quality monitoring technology and its application for large venues

大型场馆是承担体育赛事和文体活动的主要场所,具有人群密度高的典型特点,场馆内的空气质量会影响人的使用体验和身体健康.将空气质量测量单元与无线传感技术相结合,研发了一种面向大型场馆的无线空气质量监测设备,创建了具有设备管理、数据采集、可视化展示以及污染预警等功能的空气质量物联网监测平台.通过空气质量监测设备对比试验,验证了研发的空气质量监测设备的有效性和可靠性.将本项技术应用于杭州亚运会奥体中心体育馆内的空气质量监测.基于CFD仿真模拟研究了场馆的污染物浓度分布及扩散情况,以此确定空气质量测点的布置区域.通过测点数据采集和分析,得到了室外气象变化和室内建筑装潢引起场馆内污染气体浓度波动数据及其规律.实践表明:研发的空气质量监测设备具有功耗低、体积小、布置便捷的优点,能够满足大型场馆的大空间、大面积空气质量长期监测需求.

Large venues are mainly used for sports events and recreational activities,with the typical characteristics of high crowd density.The air quality in the venues will affect people's onsite experience and health.In this paper,a new method of combining the air quality measurement unit with wireless sensor technology is introduced.To be specific,a wireless air quality monitoring equipment for large venues is developed,and an air quality Internet of Things monitoring platform with the functions of equipment management,data acquisition,visual display and pollution early warning is created.Through the comparative test of air quality monitoring equipment,the effectiveness and reliability of the developed air quality monitoring equipment are verified.This technology has been applied to the air quality monitoring in the gymnasium of Hangzhou Asian Games Olympic Sports Center.The concentration distribution and diffusion of pollutants in the gymnasium are studied based on CFD simulation,so as to determine the layout area of air quality measurement points.Through data collection and analysis of measuring points,the data and laws of pollutant gas concentration fluctuation in the venue caused by outdoor meteorological changes and indoor building decoration are obtained.The practice shows that the developed air quality monitoring equipment has the advantages of low power consumption,small volume and convenient layout,and can meet the long-term monitoring needs of air quality for large venues.