摘要
研究目的:一些地方铁路、企业或物流园专用线及疏港铁路,多个车站平面调车作业和小运转列车运行作业并存,这两种作业需相应的无线通信系统对其提供技术支撑。目前多采用同时设置平面调车数字无线通信系统和专用移动通信系统的方案,虽可满足需求,但投资较大。为节约工程建设成本,简化设备配置,研究采用一套无线通信系统同时满足多个调车作业站及小运转列车运行区间平面调车通信业务和无线调度通信业务需求是非常必要的。研究结论:(1)多站平面调车无线通信系统沿用现有平面调车数字无线通信系统的技术制式和工作频段,符合当前的技术政策;(2)采用数字移动无线电(DMR)同频中继技术的多台数字信道机,通过IP互联方式,将原用于站内平面调车作业的无线信号覆盖扩展至作业范围内的各个车站及区间,在多个调车作业站及小运转列车运行区间实现统一的无线信号覆盖,消除盲区;(3)通过仿真,验证了系统终端音频接收解调电路采用ICA算法可实现同频干扰信号分离,抑制同频干扰;(4)本研究成果可为地方铁路、企业或物流园专用线及疏港铁路工程设计以及多站平面调车无线通信系统设备制造提供参考。
Research purposes:In some local railways,enterprises or logistics park special lines and port distribution railways,flat shunting operations at multiple stations and transfer train running operation coexist.The two kinds of operations require the corresponding wireless communication system to provide technical support.At present,the scheme of setting up both a flat shunting digital wireless communication system and a special mobile communication system is mostly adopted,which can meet the requirements,but the investment is relatively high.In order to save the project construction cost and simplify the equipment configuration,it is very necessary to study adopting a set of wireless communication system to meet the needs of flat shunting communication service and wireless dispatching communication service of multiple shunting stations and transfer train running sections at the same time.Research conclusions:(1)The wireless communication system for multi-station flat shunting follows the technical system and working frequency band of the existing flat shunting digital wireless communication system,which accords with current technology policy.(2)Multiple digital repeaters based on digital mobile radio(DMR)co-frequency relay technology are adopted to expand the wireless signal originally used for covering flat shunting operation in the station to each station and section within the operation scope by means of IP interconnection,so as to realize unified wireless signal coverage in multiple shunting stations and transfer train running sections and eliminate wireless signal blind areas.(3)Through simulation,it is verified that the audio receiving and demodulation circuit of the system terminal equipment can separate the co-frequency interference signal and suppress the co-frequency interference by using ICA algorithm.(4)The research results can provide reference for the engineering design of local railways,enterprises or logistics park special lines and port distribution railways,as well as the manufacturing of wireless
作者
王国雨
WANG Guoyu(Wuhan Railway Siyuan Engineering Consulting Co.Ltd,Wuhan,Hubei 430063,China)
出处
《铁道工程学报》
EI
北大核心
2022年第6期73-77,共5页
Journal of Railway Engineering Society
基金
中铁第四勘察设计院集团有限公司科研课题(2020K139)。
关键词
铁路
平面调车
无线通信
数字移动无线电
小运转列车
railway
flat shunting
wireless communication
digital mobile radio
transfer train
