摘要实时、精确地确定列车在线路中的位置是保证安全、发挥效率、提供最佳服务的前提。介绍了在轨道交通系统中列车定位技术的方法和现状,国内外轨道交通中主要采纳的列车定位方法以及对照。74908
本文设计了基于扩频无线电的查询-应答器定位技术:
(1)无线扩频定位技术:研究了基于无线扩频技术的列车定位方法。分析对比了目前使用的各类列车定位方法,指出了无线扩频定位方法的优越性。阐述了无线扩频技术的基本理论和扩频定位原理,给出了无线扩频定位系统的构成,并对无线扩频定位接收机进行了较为详细的设计。
(2)查询-应答器列车定位方法:应答器用于向列车控制系统传送线路基本参数、线路速率、特殊定位、列车运行目标数据、临时限速、车站进路等固定和实时可变的信息。随着列车运行速率不断提高,应答器设备成为高速列车控制系统中的重要基础设备,也是信号系统引入的新设备。
该论文有图23幅,表1个,参考文献23篇。
毕业论文关键词:轨道交通 列车定位 无线扩频 查询-应答器
Research on the Positioning Technology of Metro Trains
Abstract In real time, to accurately determine the location of the train line is to ensure safe, efficient play, the premise of providing the best service。 It introduces the train positioning technology in rail transit system and method situation, domestic and international rail train positioning method is mainly used and compared。
This paper presents an absolute position encoder positioning technology based on spread spectrum radio:
(1) Spread spectrum wireless location technology: research based train positioning method of wireless spread spectrum technique。 Analyzed and compared various methods currently used train positioning, pointing out the advantages of spread spectrum wireless positioning method。 Explains the basic theory and principles of spread spectrum wireless spread spectrum positioning technology, given the composition of spread spectrum wireless positioning system, positioning and wireless spread spectrum receiver for a more detailed design。
(2) Inquiry response train positioning method: transponder for control system of transmission line parameters, line rate, special position, train running target data, temporary speed restriction, station route and fixed and variable in real-time information to the train。 With the continuous improvement of the train running speed, the transponder equipment has become an important basic equipment in the high-speed train control system。
The papers figure 23, table 1, reference 23。
Key Words: rail transport train positioning wireless spread spectrum
Query answering machine
目 录
摘要Ⅰ
Abstract---Ⅱ
目录Ⅲ
图清单-Ⅳ
表清单-Ⅳ
变量注释表---Ⅴ
1 绪论--1
1。1背景及意义--- 1
1。2列车定位方法研究现状-2
1。3论文结构---3
2定位技术的简介5
2。1定位方法的综述--5
2。2理论基础---9
3 基于无线扩频和查询—应答器的定位技术-12
3。1无线扩频技术的列车定位方法的研究--12
3。2查询—应答器系统的研究-24
3。3查询—应答器定位原理29
3。4基于扩频无线电的查询—应答器的定位技术-30
4 结论-33
参考文献--34
致谢36
图清单
图序号 图名称 页码
图1-1 测速定位系统的关键