高速铁路双向点式信息交互系统设备的研究  

A Duplex Intermittent Information Interactive System for High-speed Railways

作　　者：杨志杰[1] 赵海东[1] 

机构地区：[1]铁道科学研究院通信信号研究所,北京100081

出　　处：《中国铁道科学》2004年第3期91-96,共6页China Railway Science

基　　金：铁道部科技研究开发计划项目(2000X002)

摘　　要：从双向点式信息交互系统提出的背景及其基本构成出发,研究系统的地面和车载两个不同部分的系统构架。分析系统的关键部件———双向传输天线,根据N圈环的辐射电阻和耗损电阻的计算公式,讨论双向传输天线的效率。确定天线的有效作用范围为670mm,有效水平耦合时间为8ms。室内静态模拟试验结果显示,在8ms有效时间内,接收总帧数与接收正确帧数均为8帧1024bit数据。现场动态试验结果与室内静态模拟基本相同,验证了有效水平耦合时间与可接收数据量的关系。From the background and the basic configuration of a duplex intermittent information interactive system, the paper discusses two different components, namely the trackside and the onboard components in the system structures. An analysis is made on the key component of the system, the duplex transmitting antenna. The efficiency of this duplex transmitting antenna is discussed based on the equation for calculating the radiation resistance of a N-turn loop and the detrition resistance. The effective range of the antenna is found to be 670 mm, and the effective horizontal coupling time 8 ms. The results of indoor static simulation show that in the 8 ms effective time, the total number of received frames and the number of received correct frames are both 8 at 1 024 bit data rate. The results of field dynamic tests and indoor simulation are basically the same, which verifies the relation between the effective horizontal coupling time and the quantity of receivable data.

关 键 词：高速铁路 通信 双向点式信息交互系统 车载系统 地面系统 天线 

分 类 号：U284.76[交通运输工程—交通信息工程及控制]