基于主动红外入侵探测的在室人数测试方法  

A measurement method of occupancy based on active infrared intrusion detection

作　　者：徐文璐 刘猛 刘欢[1,2,3,4] XU Wenlu;LIU Meng;LIU Huan(School of Civil Engineering,Chongqing University,Chongqing 400045,P.R.China;National Center for International Research of Low-carbon and Green Building,Chongqing University,Chongqing 400045,P.R.China;Joint International Research Laboratory of Green Building and Built Environment,Chongqing University,Chongqing 400045,P.R.China;Chongqing Key Laboratory of Wind Engineering and Wind Energy Utilization,Chongqing University,Chongqing 400045,P.R.China)

机构地区：[1]重庆大学土木工程学院,重庆400045 [2]重庆大学国家级低碳绿色建筑国际联合研究中心,重庆400045 [3]重庆大学绿色建筑与人居环境营造国际合作联合实验室,重庆400045 [4]重庆大学风工程及风资源利用重庆市重点实验室,重庆400045

出　　处：《重庆大学学报》2023年第6期51-60,共10页Journal of Chongqing University

基　　金：国家重点研发计划(2018YFD1100704)。

摘　　要：在室人数与建筑用能系统紧密相关,实时在室人数的监测是建筑用能行为方向的热点问题之一。红外传感是现有研究方法中应用较广泛的方法,其测试精度与安装高度、人员通过速度及人员体型等因素有关,选取主动红外入侵探测器,依据建筑室内人员活动情况,研究了安装高度、通过速度及人员体型对在室人数测试精度的影响。研究结果表明,考虑各种人员体型及通过速度时,测试精度随安装高度的降低先升高后降低。通过速度越慢,测试精度越高,当v≥1.4 m/s时,测试精度低于60%;当1.0 m/s≤v<1.4 m/s时,测试精度为70%~81%;当v<1.0 m/s时,测试精度高于95%,当v<0.8 m/s时,测试精度达到100%等。被测人员的身高和体重指数(BMI)均与测试精度呈强正线性相关。通过不同工况分析,提出了应用于实际场景的综合精度估算方法。Occupancy is closely related to the building energy consumption system and real-time monitoring occupancy is one of the hot issues in the study of building energy consumption behavior.Infrared sensing is a widely used method in existing research methods.Its measurement precision is related to installation height,personnel passing speed,personnel somatotype and other factors.In this study,the active infrared intrusion detector was selected to investigate the effects of installation height,passing speed and personnel somatotype on the measurement precision of occupancy according to the indoor occupants’activities.The results show that the measurement precision first increased and then decreased with the decrease of the installation height when considering various personnel somatotype and passing speed.The slower the passing speed,the higher the measurement precision.When v≥1.4 m/s,the precision was less than 60%;when 1.0 m/s≤v<1.4 m/s,the precision was 70%~81%;when v<1.0 m/s,the precision was higher than 95%;When v<0.8 m/s,the precision was 100%.The height and body mass index(BMI)of the tested people were positively correlated with the measurement precision.Through the analysis of different operating conditions,an estimation method of comprehensive precision applied to actual scenes was proposed.

关 键 词：主动红外入侵探测 在室人数 安装高度 通过速度 人员体型 精度 

分 类 号：TU831[建筑科学—供热、供燃气、通风及空调工程]