發(fā)布時間：2018-10-17 18:33

【摘要】：青藏鐵路格拉段地處青藏高原,全線84%的路段海拔在4000m以上,氣候條件非常惡劣,常年缺氧、低溫、暴雪等,因此,研究開發(fā)能夠減少設(shè)備維護(hù)量、降低人員工作強(qiáng)度、提高運(yùn)輸效率的列控系統(tǒng)是青藏鐵路的迫切需求。增強(qiáng)型列車控制系統(tǒng)(ITCS)是基于GSM-R無線通信和衛(wèi)星定位技術(shù)、集車站聯(lián)鎖、區(qū)間虛擬閉塞和列車運(yùn)行控制功能于一體的列控系統(tǒng),通過衛(wèi)星定位技術(shù)實現(xiàn)列車定位。增強(qiáng)型列車控制系統(tǒng)(ITCS)運(yùn)行至今,雖然經(jīng)過多次升級改造,但系統(tǒng)的列車定位精確度仍然不高。從青藏鐵路自身技術(shù)發(fā)展、降低運(yùn)維成本等方面考慮,采用定位性能良好的北斗衛(wèi)星導(dǎo)航系統(tǒng)替代GPS實現(xiàn)列車的精確定位,具有很高的可行性。本文首先對青藏線的特殊情況以及國內(nèi)外采用衛(wèi)星導(dǎo)航技術(shù)實現(xiàn)列車定位的研究情況進(jìn)行了介紹,明確了衛(wèi)星導(dǎo)航系統(tǒng)融合多種傳感器的組合定位方式是目前的研究方向。第二章對青藏線增強(qiáng)型列車控制系統(tǒng)(ITCS)的系統(tǒng)結(jié)構(gòu)進(jìn)行了介紹。第三章對北斗衛(wèi)星導(dǎo)航系統(tǒng)的構(gòu)成、建設(shè)情況及應(yīng)用情況進(jìn)行了介紹。重點闡述了鐵路北斗地基增強(qiáng)系統(tǒng)的構(gòu)成、工作流程以及建成北斗地基增強(qiáng)系統(tǒng)的特殊意義。第四章根據(jù)青藏線增強(qiáng)型列車控制系統(tǒng)(ITCS)的使用情況以及現(xiàn)有對基于GNSS的列車定位系統(tǒng)研究情況,設(shè)計了基于北斗的列車定位系統(tǒng)方案。并從定位精度、節(jié)約成本等方面對比了多種信息傳感器的優(yōu)缺點,最終選擇了北斗衛(wèi)星導(dǎo)航系統(tǒng)融合車速傳感器的方選進(jìn)行列車定位。第五章通過在青藏線搭建的實驗平臺對北斗衛(wèi)星導(dǎo)航系統(tǒng)的定位性能進(jìn)行了測試檢驗。僅就單北斗模式、多模融合和普通差分糾錯模式下的北斗定位精度進(jìn)行了測試,通過MATLAB軟件打點顯示,在采用普通差分糾錯的模式下北斗衛(wèi)星導(dǎo)航系統(tǒng)已經(jīng)具備了與GPS相當(dāng)?shù)亩ㄎ凰健Ｗ詈?對本文的研究內(nèi)容進(jìn)行了總結(jié)分析。
[Abstract]:The Gela section of the Qinghai-Tibet Railway is located on the Qinghai-Tibet Plateau, with 84% of the section above the altitude of 4,000 m. The climatic conditions are very harsh, hypoxia, low temperature, heavy snow and so on. Therefore, research and development can reduce the amount of equipment maintenance and the working intensity of personnel. Train control system to improve transportation efficiency is an urgent need of Qinghai-Tibet Railway. The enhanced Train Control system (ITCS) is a train control system based on GSM-R wireless communication and satellite positioning technology, which integrates station interlocking, interval virtual block and train operation control functions. Up to now, the enhanced train control system (ITCS) has been upgraded many times, but the accuracy of the system is still not high. Considering the technical development of Qinghai-Tibet Railway and reducing the cost of operation and maintenance, it is feasible to use Beidou satellite navigation system with good positioning performance instead of GPS to realize the accurate positioning of trains. In this paper, the special situation of Qinghai-Xizang Line and the research of using satellite navigation technology to realize train positioning at home and abroad are introduced, and it is clear that the integrated positioning mode of satellite navigation system fusion with many sensors is the research direction at present. The second chapter introduces the system structure of the enhanced train control system (ITCS) on the Qinghai-Tibet Railway. The third chapter introduces the structure, construction and application of Beidou satellite navigation system. The construction, work flow and special significance of the Beidou foundation strengthening system are expounded. In the fourth chapter, according to the use of the enhanced train control system (ITCS) of the Qinghai-Tibet Railway and the existing research on the train positioning system based on GNSS, the scheme of the train positioning system based on Beidou is designed. The advantages and disadvantages of many kinds of information sensors are compared in terms of positioning accuracy and cost saving. Finally, the selection of speed sensor fusion speed sensor in Beidou satellite navigation system is selected for train positioning. In chapter 5, the positioning performance of Beidou satellite navigation system is tested by the experimental platform built on Qinghai-Tibet line. The positioning accuracy of Beidou in single Beidou mode, multi-mode fusion and ordinary differential error correction mode is tested, which is shown by MATLAB software. The Beidou satellite navigation system has the same positioning level as GPS in the common differential error correction mode. Finally, the research content of this paper is summarized and analyzed.
【學(xué)位授予單位】：中國鐵道科學(xué)研究院
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TN967.1;U284.48

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