延长700M信号在煤矿弯曲巷道传输距离的技术研究

Technical Research on Extending Transmission Distance of 700M Signal in Coal Mine Curved Roadway

为了解决煤矿弯曲巷道定向天线无法实现全巷道700M信号区域覆盖、普通泄漏电缆通信距离短的问题,通过理论推导内外导体半径和调节孔间距,设计了一种T形泄漏电缆。HFSS软件仿真验证表明,T形泄漏电缆可以延长700M射频信号在煤矿弯曲巷道的传输距离和增加信号剖面覆盖范围,从而实现了700M信号在煤矿弯曲巷道的远距离、全区域覆盖,保证煤矿5G通信系统的正常、可靠运行,为智能矿山建设奠定了通信基础。

In order to solve the problems that the directional antenna of the curved roadway in the coal mine cannot achieve the coverage of the 700M signal area of the whole roadway and the communication distance of the ordinary leaky cable is short,a T-shape leaky cable was designed by calculating the radius of the inner and outer conductors of the leaky cable and adjusting the spacing of the holes.The HFSS software simulation verification shows that the T-shape leaky cable can extend the transmission distance of the 700M RF signal in the curved roadway of the coal mine and increase the coverage of the signal profile,so as to realize the long-distance and full-area coverage of the 700M signal in the curved roadway of the coal mine,ensure the normal and reliable operation of the 5G communication system in the coal mine,and lay a communication foundation for the construction of intelligent mine.