煤矿井下无线传输衰减分析测试与最佳工作频段研究  

Analysis and testing of wireless transmission attenuation in coal mine underground and research on the optimal operating frequency band

作　　者：孙继平[1] 梁伟锋 彭铭 张高敏 潘涛 张侯 李小伟 SUN Jiping;LIANG Weifeng;PENG Ming;ZHANG Gaomin;PAN Tao;ZHANG Hou;LI Xiaowei(School of Mechanical Electronic and Information Engineering,China University of Mining and Technology-Beijing,Beijing 100083,China;Sandaogou Coal Mine,CHN Energy Guoshen Group,Fugu 719400,China;CHN Energy Digital Intelligence Technology Development(Beijing)Co.,Ltd.,Beijing 100083,China)

机构地区：[1]中国矿业大学(北京)机电与信息工程学院,北京100083 [2]国家能源集团国神公司三道沟煤矿,陕西府谷719400 [3]国能数智科技开发(北京)有限公司,北京100011

出　　处：《工矿自动化》2023年第4期1-8,共8页Journal Of Mine Automation

基　　金：国家重点研发计划项目(2016YFC0801800)。

摘　　要：5G,UWB,ZigBee,WiFi6等矿井移动通信、人员及车辆定位、无线传输等技术在煤矿井下应用,促进了煤矿安全生产和煤矿智能化建设。然而受电气防爆的限制,煤矿井下无线发射功率不大于6 W,制约着矿井无线传输距离,增加了基站用量和系统成本,不便于系统使用和维护。在无线发射功率受电气防爆限制的条件下,选择传输衰减较小的无线工作频段,可有效提高无线传输距离,减小基站用量和系统成本。为满足矿井无线传输工作频段选择与优化的需求,在国家能源集团国神公司三道沟煤矿的辅助运输大巷和综采工作面分别进行了700 MHz~6 GHz频段的无线传输测试,并对测试结果进行了分析,提出了矿井无线传输优选频段:(1)辅助运输大巷无线传输的最佳工作频段为700~910 MHz。(2)综采工作面无线传输的最佳工作频段为700~1710 MHz。(3)辅助运输大巷无线传输衰减比综采工作面无线传输衰减小,且随着频率增大,辅助运输大巷与综采工作面无线传输衰减的差值变小。(4)矿井无线传输的最佳工作频段为700~1710 MHz。The application of technologies such as 5G,UWB,ZigBee and WiFi6 in coal mine mobile communication,personnel and vehicle positioning,and wireless transmission has promoted coal mine safety production and intelligent construction.However,due to the limitations of electrical explosion-proof measures,the wireless transmission power underground in coal mines is not greater than 6 W,which restricts the wireless transmission distance in the mine,and increases the usage of base stations and system costs.It is not convenient for system use and maintenance.Under the condition that the wireless transmission power is limited by electrical explosion-proof measures,selecting a wireless operating frequency band with smaller transmission attenuation can effectively increase the wireless transmission distance,reduce the usage of base stations,and reduce system costs.In order to meet the needs of selecting and optimizing the working frequency band of wireless transmission in mines,wireless transmission tests in the 700 MHz to 6 GHz frequency band are conducted in the auxiliary transportation roadway and fully mechanized working face of the Sandaogou Coal Mine of the National Energy Group.The test results are analyzed and the optimal frequency band for wireless transmission in mines is proposed.①The optimal operating frequency band for wireless transmission in auxiliary transportation roadways is 700 to 910 MHz.②The optimal working frequency band for wireless transmission in fully mechanized working faces is 700 to 1710 MHz.③The wireless transmission attenuation of the auxiliary transportation roadway is smaller than that of the fully mechanized working face.As the frequency increases,the difference in wireless transmission attenuation between the auxiliary transportation roadway and the fully mechanized working face decreases.④The optimal working frequency band for wireless transmission in mines is 700 to 1710 MHz.

关 键 词：煤矿智能化 矿井无线传输 无线传输衰减 无线频段 5G WiFi6 UWB 

分 类 号：TD655[矿业工程—矿山机电]