CBTC系统无线通信采用UHF低频段的可靠性分析  

Reliability Analysis of CBTC Wireless Communication System Working in UHF Low Frequency Band

作　　者：陆璠 朱翔[2] 纪文莉 郑国莘[1] 

机构地区：[1]上海大学特种光纤与光接入网省部共建重点实验室,上海硕士研究生200072 [2]上海申通地铁集团有限公司技术中心,上海201103

出　　处：《城市轨道交通研究》2016年第4期15-20,共6页Urban Mass Transit

基　　金：国家自然科学基金重点项目(61132003)面上项目(61171086);上海市特种光纤与光接入网重点实验室开放课题(SKLSFO2011-04)

摘　　要：针对城市轨道交通基于通信的列车控制（CBTC）系统的无线通信受到Wi Fi（无线局域网）干扰,造成地铁列车停运的事件,上海申通地铁集团有限公司在张江实训线试验了406.5~409.5 MHz的无线通信用于CBTC系统的可行性。介绍了该系统的关键技术及传输方式。在实训线上对其信号覆盖、故障弱化及切换、抗干扰等进行试验测试,并结合这种新型模式的试验,对无线通信的可靠性进行建模并分析。测试及分析表明,采用UHF（Ultra High Frequency）低频段和基于漏缆传输的专频专网技术具有更高的可靠性和可用性。Aiming at the problem of subway train stop caused by CBTC wireless communication under WiFi interference,the reliability of CBTC wireless communication on Shanghai Zhangjiang trainingl line that adopts the dedicated frequency between 406. 5 M Hz and 409. 5 MHz is tested. In this paper,the key technology and transmission mode of the system,such as the signal coverage,failure-off and disturbance sw itching are introduced. Then,combined with the experiment of Shanghai Zhangjiang training line test,the reliability of wireless communication is modeled and analyzed. The results show that this technology working in low frequency band of UHF and the dedicated frequency based on the leakage cable transmission is reliable and applicable.

关 键 词：城市轨道交通 基于通信的列车控制 数据通信系统 UHF低频段 可靠性分析 

分 类 号：U284.48[交通运输工程—交通信息工程及控制]