凯里市万博广场电磁辐射自动监测站测量结果分析

Analysis of measurement results of the electromagnetic radiation automatic monitoring station at Wanbo Square in Kaili City

以凯里市万博广场电磁辐射自动监测站数据为基础,分析了具有代表性和典型性的凯里市万博广场自动监测站点处的环境电磁辐射现状及污染源贡献份额。结果表明:2019—2022年凯里市万博广场站点射频电场强度连续测量采集的6minRMS均值310949个数据,99.6%的测值≤2.0 V/m,最大值为3.04 V/m,低于《电磁环境控制限值》8702-2014中12 V/m控制要求,连续4年凯里市万博广场自动监测站点处电磁辐射水平良好。经选频测量结果分析,凯里市万博广场自动监测站点主要电磁辐射源是广播、电视和通信基站,2019—2022年环境电磁辐射射频电场强度年均值广播电视的贡献份额为0.951~1.15V/m,且贡献份额中VHF电视>UHF电视>FM广播,通信基站贡献份额为0.279~0.455 V/m。

Based on the data from the Wenhua Square automatic monitoring station in Kaili City,this study analyzes the current status of environmental electromagnetic radiation and the contribution of pollution sources at the representative and typical monitoring stations in Wenhua Square.The results show that from 2019 to 2022,the average value of the 6-minute RMS(Root Mean Square)of the radio frequency electric field intensity measured continuously at the Wenhua Square station was 310,949 data points,with 99.6%of the measurements≤2.0 V/m and a maximum value of 3.04 V/m.These values are below the control requirement of 12 V/m specified in GB 8702-2014,indicating a good level of electromagnetic radiation at the Wenhua Square automatic monitoring station in Kaili City over the past four years.A selective frequency measurement analysis reveals that the main electromagnetic radiation sources at the Wenhua Square automatic monitoring station in Kaili City are broadcasting,television,and communication base stations.The contribution of broadcasting and television to the average annual radio frequency electric field intensity of environmental electromagnetic radiation from 2019 to 2022 ranges from 0.951 to 1.15 V/m,with VHF television contributing more than UHF television and FM broadcasting.The contribution of communication base stations ranges from 0.279 to 0.455 V/m.