北京交通大学学报2023，Vol.47Issue(5)：72-81,10.DOI:10.11860/j.issn.1673-0291.20230028
空间杂质对应答器上行链路传输性能影响分析
Impact analysis of space impurities on uplink transmission performance of balise
摘要
Abstract
Balises are typically installed outdoors,where they are exposed to various impurities,and their surfaces are prone to contamination.This contamination can significantly impact the accu-rate transmission of telegram information,potentially leading to train stoppages.This study ana-lyzes the operating principles of balise transmission systems.A balise antenna model is estab-lished in the electromagnetic field simulation software FEKO,introducing different types of im-purities on the antenna's surface.The paper conducts simulations to generate uplink signal ampli-tude curves,and calculates key transmission performance indices,including the balise effective range and the number of bits received by the Balise Transmission Module(BTM).The impact of space impurities on the uplink transmission performance of the balise is analyzed.The research results show that impurities with higher electrical conductivity and magnetic permeability tend to reduce electromagnetic penetration,consequently exerting a more substantial impact on balise transmission performance.For balises covered by Class I to Class VI impurities,the maximum permissible impurity thickness should not exceed 300,200,150,50,25,and 2.5 mm,respec-tively.Furthermore,when spatial impurities do not entirely cover the balise surface,their influ-ence on transmission performance is relatively minimal.关键词
应答器/空间杂质/上行链路/传输性能Key words
balise/spatial impurities/uplink/transmission performance分类
交通工程引用本文复制引用
李建国,张鑫奎,薛千树,郑云水..空间杂质对应答器上行链路传输性能影响分析[J].北京交通大学学报,2023,47(5):72-81,10.基金项目
四电BIM工程与智能应用铁路行业重点实验室开放基金(BIMKF-2021-06) （BIMKF-2021-06）
教育部产学合作协同育人项目(202101023013) （202101023013）
甘肃省自然科学基金(20JR5RA396) （20JR5RA396）
兰州交通大学实验教改重点项目(2022005) Open Fund Project of Key Laboratory of Four Power BIM Engineering and Intelligent Application Railway Industry(BIMKF-2021-06) （2022005）
The Collaborative Education Project of the Ministry of Education(202101023013) （202101023013）
Natural Science Foun-dation of Gansu Province(20JR5RA396) （20JR5RA396）
Key Experimental Teaching Reform Project of Lanzhou Jiaotong University(2022005) （2022005）
