摘要
作为高速铁路车地通信的关键设备,应答器信息传输的准确性直接影响列车安全高效运行,为研究列车速度与应答器倾斜、俯仰、偏转角度偏差对其传输性能的影响,针对应答器传输系统作用过程,分析其工作原理,建立BTM天线接收上行链路信号动态模型,应答器角度偏差理论模型,计算穿过BTM天线磁通量、BTM接收天线感应电动势,仿真不同列车速度及应答器安装角度偏差下BTM接收线圈感应电动势幅值曲线,计算分析上述情况下应答器作用距离、BTM作用时间、接收比特数等性能指标变化情况。研究表明,应答器作用距离随列车速度增大而减小,速度每增加50 km/h应答器作用区磁场强度减小0.2 dB,BTM作用时间、动态接收比特数、动态接收报文安全帧数与列车速度均呈反比关系;列车速度一定,BTM动态接收比特数随应答器倾斜角、偏转角的增大呈线性减小,在现场施工维护过程中应重点对应答器倾斜偏转进行查验;满足BTM接收报文误比特率的条件下,现状应答器传输系统的适用性速度限值为420 km/h。
As the key equipment of high-speed railway train ground communication,the accuracy of balise information transmission directly affects the safe and efficient running of trains.In order to study the influence of train speed and balise tilting,pitching and yawing angular deviation on its transmission performance,the working principle of balise transmission system is analyzed according to its working process,and a dynamic model of BTM antenna receiving up-link signal and a theoretical model of balise angular deviation are established.Calculate the magnetic flux passing through the BTM antenna and the induced electromotive force of the BTM receiving antenna,simulate the amplitude curve of the induced electromotive force of the BTM receiving coil under different train speeds and balise installation angular deviation,and calculate and analyze the changes of the balise contact length,BTM operating time,receiving bits and other performance indicators under the above conditions.The research shows that:The contact length of balise decreases with the increase of the train speed.For every 50 km/h increase in speed,the magnetic field intensity in the contact zone of balise decreases by 0.2 dB.The BTM operating time,the number of dynamic receiving bits,and the number of safe frames of dynamic receiving telegram are inversely proportional to the train speed.When the train speed is constant,the number of dynamic receiving bits of BTM decreases linearly with the increase of balise tilt angle and yaw angle.In the process of on-site construction and maintenance,we should focus on checking the transponder tilt deflection.Under the condition of meeting the bit error rate of BTM received message,the applicable speed limit of the current transponder transmission system is 420 km/h.
作者
李建国
张鑫奎
郑云水
Li Jianguo;Zhang Xinkui;Zheng Yunshui(School of Automatic&Electrical Engineering,Lanzhou Jiaotong University,Lanzhou 730070,China;Key Laboratory of Four Power BIM Engineering and Intelligent Application Railway Industry,Lanzhou 730070,China)
出处
《电子测量与仪器学报》
CSCD
北大核心
2023年第1期212-221,共10页
Journal of Electronic Measurement and Instrumentation
基金
中国高校产学研创新基金(2021LDA07002)
四电BIM工程与智能应用铁路行业重点实验室开放基金课题项目(BIMKF-2021-06)
教育部2021年产学合作协同育人项目(202101023013)
甘肃省自然科学基金项目(20JR5RA396)资助
关键词
应答器
传输性能
列车速度
角度偏差
balise
transmission performance
running speed
angular deviation
作者简介
通信作者:李建国,1998年于电子科技大学获得学士学位,2005年于兰州交通大学获得硕士学位,2011年于兰州交通大学获得博士学位,现为兰州交通大学副教授,主要研究方向为交通信息控制工程和智能交通。E-mail:lijianguo@mail.lzjtu.cn;张鑫奎,2018年于兰州交通大学获得学士学位,现为兰州交通大学自动化与电气工程学院交通信息工程及控制专业硕士研究生,主要研究方向为交通信息控制工程和高速铁路应答器系统传输性能。E-mail:2870318869@qq.com
