摘要
5G,WiFi6,UWB,ZigBee等矿井移动通信系统及人员和车辆定位系统等发射的较大功率无线电波会影响煤矿井下作业人员健康,因此,需要研究煤矿井下无线电波对人体的影响。研究了电磁辐射对人体的作用:人体不同部位对电磁辐射吸收能力不同,电磁辐射对人体头部的影响最大。无线电波发射功率限值包括职业暴露限值和公众暴露限值两大类。职业暴露是指作业人员在电磁辐射环境中暴露时间不大于8 h。煤矿井下作业人员的工作时间为每班工作8 h(3班倒)或每班工作6 h(4班倒),因此,煤矿井下无线电波发射功率限值应选择全身职业暴露无线电波发射功率最小的限值6.28 W。为防止煤矿井下无线电波发射引起瓦斯爆炸,GB/T 3836.1−2021《爆炸性环境第1部分:设备通用要求》规定煤矿井下无线电波发射功率不大于6 W。因此,取得防爆合格证和矿用安全标志准用证的5G,WiFi6,UWB,ZigBee等矿井移动通信系统及人员和车辆定位系统等,在保证无线发射天线距固定岗位人员大于1 m的条件下,不会对煤矿井下作业人员造成伤害。
The large-power radio waves emitted by 5G,WiFi6,UWB,ZigBee and other mine mobile communication systems and personnel and vehicle positioning systems will affect the health of underground personnel.Therefore,it is necessary to study the influence of underground radio waves on human body.The influence of electromagnetic radiation on the human body has been studied.Different parts of the human body have different absorption capacities to electromagnetic radiation,and electromagnetic radiation has the greatest impact on the human head.Radio wave emission power limits include occupational exposure limits and public exposure limits.Occupational exposure means that the exposure time of the personnel in the electromagnetic radiation environment is no more than 8 hours.The working time of coal mine underground personnel is 8 hours per shift for 3 shifts or 6 hours per shift for 4 shifts.Therefore,the minimum limit value of 6.28 W of radio wave transmission power for whole-body occupational exposure shall be selected as the limit value of radio wave transmission power in the coal mine.In order to prevent the gas explosion caused by coal mine underground radio wave emission,GB/T 3836.1-2021 Explosive Atmospheres-Part 1:Equipment-General Requirements stipulates that the radio wave transmission power in coal mines shall not be greater than 6 W.Therefore,the 5G,WiFi6,UWB,ZigBee and other mine mobile communication systems and personnel and vehicle positioning systems that have obtained the explosion-proof certificate and the permit for the use of mining safety signs will not cause harm to the underground personnel of the coal mine under the condition that the distance between the wireless transmission antenna and the fixed post personnel is greater than 1 m.
作者
丁序海
潘涛
彭铭
张高敏
DING Xuhai;PAN Tao;PENG Ming;ZHANG Gaomin(Sandaogou Coal Mine,CHN Energy Guoshen Group,Fugu 719400,China;CHN Energy Information Technology Co.,Ltd.,Beijing 100011,China;Key Laboratory of Wireless Sensor Network and Communication,Shanghai Institute of Microsystem and Information Technology,Chinese Academy of Sciences,Shanghai 200050,China;School of Mechanical Electronic and Information Engineering,China University of Mining and Technology-Beijing,Beijing 100083,China)
出处
《工矿自动化》
北大核心
2022年第11期84-92,144,共10页
Journal Of Mine Automation
基金
国家重点研发计划项目(2016YFC0801800)
中国科学院无线传感网与通信重点实验室开放课题(20190913)。
