如何建设新标准体系下的地铁消防无线通信系统是近期轨道交通行业的重点研究内容。本文针对应急管理部门正式发布的ePDT(应急专用数字集群)系列规范及标准,以西安市地铁8号线换乘站为出发点,结合既有线建设现状,提出适用于不同类型换乘站的消防无线通信系统设计方案。通过建立复杂场景模型,对设计方案的覆盖能力和基站解调能力进行量化分析。研究表明,通过改造既有基站并引入模拟光纤直放站系统,在系统设定边缘场强高于-90dBm且基站所带直放站远端机不超过9台时,可满足换乘站及相邻区间的覆盖需求。该研究成果可为新形势下的轨道交通消防无线通信系统的工程设计和网络优化提供参考。

How to build a Metro fire-fighting wireless communication system under the new standard is the key research content of the urban transit industry. Taking the interchange station of Xi"an Metro Line 8 as the starting point and combining the current status, this paper proposes a design scheme of fire-fighting wireless communication system suitable for different types of interchange stations responded to the ePDT series of specifications and standards officially released by the Ministry of Emergency management. By establishing a complex scene model, the coverage capability and base station demodulation capability of the design scheme are quantitatively analyzed. The research shows that by upgrading the existing base station and introducing the analog optical fiber repeater system, when the edge field strength of the system is set to be higher than -90dBm and the base station has no more than 9 repeater remote units, it can meet the requirements of interchange stations and tunnel section coverage requirements. The research results can provide references for the engineering design and network optimization of the urban transit fire-fighting wireless communication system under the new situation.

X924.4

国家自然科学(61771296)；中铁第一勘察设计院科研项目(2021KY40ZD(CYH)-04)