| 基于嵌入式的轨道交通GPS时间服务器设计 |
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| 引用本文： | 冯金霞,熊天圣,张轮.基于嵌入式的轨道交通GPS时间服务器设计[J].交通科技与经济,2010,12(2):12-15. |
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| 作者姓名： | 冯金霞 熊天圣 张轮 |
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| 作者单位： | 同济大学,交通运输工程学院,上海,200092 |
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| 基金项目： | 国家自然科学基金资助项目(50678129) |
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| 摘 要： | 设计基于嵌入式的轨道交通GPS时间服务器。进行多项冗余设备设计确保系统的可靠性；同时系统嵌入NTP网络协议处理网络传输延时，确保系统时间的精确性。系统提供RS485、Zigbee、以太网等多种接入方式，以满足应用需求，为轨道交通运行控制系统提供精确同步的时间服务。
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| 关 键 词： | 轨道交通运行控制系统 分布式控制 时钟同步NTP协议 串口扩展 ZigBee |
Design of Embedded GPS Time Server for Rail Transit |
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| FENG Jin-xia,XIONG Tian-sheng,ZHANG Lun.Design of Embedded GPS Time Server for Rail Transit[J].Technology & Economy in Areas of Communications,2010,12(2):12-15. |
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| Authors: | FENG Jin-xia XIONG Tian-sheng ZHANG Lun |
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| Institution: | School of Transportation Engineering/a>;Tongji University/a>;Shanghai 200092/a>;China |
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| Abstract: | An embedded GPS time server is designed for rail transport operation control system.Take account of the system's reliability,the redundancy hot-backup and delay processing is designed,similarly,take account of the accuracy of the system time,the system embedded NTP network protocol to process network transmission delay.It provides RS485,Zigbee,Ethernet and other access methods to meet the application requirements.System provides precise synchronization time service to rail transport operation control system... |
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| Keywords: | rail transport operation control system distributed control clock synchronization NTP agreement asynchronous serial-port ZigBee |
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