论Wi-Fi在地铁CBTC系统中的工程应用

Engineering Application of Wi-Fi in Metro CBTC System

介绍在地铁工程中用于CBTC系统列车控制与精确定位的车地实时传输通道,其主要有2种:交叉感应环线方式(IL)、无线WIFI通信方式(RF)。分析国内主流无线传输方式(裂缝波导管、天线、漏泄同轴电缆)在工程实施中的优缺点,并根据实际应用中出现的安装、信号传输及维护保养等方面问题提出解决思路。

The paper introduces two train-ground transmission modes for train control and precise locationin CBTC system, including cross inductive loop mode （IL） and WIFI communication mode （RF）, analyzesadvantages and disadvantages of main wireless transmission modes （slotted waveguide, antenna, leakycoaxial cable） in construction, and puts forward the solutions to the problems in the installation, signaltransmission and maintenance in actual application.