铁路无线通信便携式话音记录与中继系统设计  

Design of Railway Wireless Communications portable voice recording and Relay System

作　　者：王骞[1] 

机构地区：[1]北京交通大学电子信息工程学院,北京100044

出　　处：《铁路计算机应用》2009年第2期42-45,共4页Railway Computer Application

摘　　要：基于铁路无线列调通信系统,研究并设计了一款便携式语音记录和中继设备,从而实现无缝接入铁路无线列调通信系统,使其网内所有无线网络设备中的模拟话音都转化为数字语音并以语音文件形式存储于SD存储卡上实现记录功能,还可以通过微机检索方式查询记录下来的语音文件。该设备还能在不影响网内其他设备正常工作的情况下,对接收到的有效信号进行再生放大,达到中继的目的,从而提高系统通信质量,增加系统通信距离。Based on Train Dispatch Radio Communication, it was researched and designed a portable recording voice and relay equipment, consequently achieve seamlessly accessing to Train Dispatch Radio Communication System-such that all equipments in the Wireless Networking System transfered the analog voice from the digital voice recording passing through by this equipment, and through this device without affecting the other network equipment to work, renewable and zoom in the effective received signal to relay.the purpose of this was enhancing the quality of communications systems, increasing the communications system＇s distance.

关 键 词：录音 中继 ARM7 FPGA SD 

分 类 号：TP302.1[自动化与计算机技术—计算机系统结构]