无线局域网技术在地铁乘客信息显示系统的应用  

WLAN Technology Applied in Subway Passenger Information Display System

作　　者：钟飞[1] 

机构地区：[1]广州市地下铁道总公司,广州510380

出　　处：《都市快轨交通》2012年第2期24-27,共4页Urban Rapid Rail Transit

摘　　要：介绍IEEE 802.11无线局域网(WLAN)的基本原理及特点,分析城市轨道交通行业乘客信息显示系统发展的趋势,阐述乘客信息显示系统的移动宽带传输子系统的设计理念(包括覆盖设计、无线接入点切换、网络带宽、覆盖冗余实施措施、应用的标准和措施、设备防护、系统网管、数据安全入侵检测、覆盖范围限定、干扰及防干扰等方面)、系统结构、链路结构;结合这些分析成果,阐述WLAN技术在城市轨道交通乘客信息显示系统中应用的适用性。The paper describes the basic principles and characteristics of IEEE 802.11WLAN, analyzes the development trend of passenger information display systems in urban rail transit industry, and elaborates mobile broadband transmission subsystem design （including the cover design, AP switching, network bandwidth, redundant implementation of the measures covered by the application of standards and measures, protective equipment, system network management, data security, intrusion detection, limit coverage, interference and anti - interference, etc.） in passenger information display system, together with system architecture and link structure. Based on the analysis of the results, the feasibility of applying WLAN technology in urban rail transport passenger information display system is highfighted.

关 键 词：地铁 乘客信息显示系统 无线局域网 移动宽带传输网 IEEE 802.11G标准 

分 类 号：U231.8[交通运输工程—道路与铁道工程]