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Design of Broken Rail Detection System for Railways in Uninhabited Area
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Lu Xingcheng, Yang Wudong
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2023 Vol. 20 (6):
1-5.
DOI:10.3969/j.issn.1673-4440.2023.06.001
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Abstract (
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Most single-track railway sections in the uninhabited area are not equipped with track circuits, that is, there is no real-time broken rail detection capability. With the popularization of seamless steel rails and the increase of speed-raising and heavy-load trains, the rail is more prone to crack and break, and the demand for operation and maintenance of detecting broken rail is increasing. Based on the principle of track circuit, combined with direct digital frequency synthesis technology, long-distance radio communication technology and digital power amplifier technology, a low-power, easy-to-deploy real-time broken rail detection system is designed in this paper. Compared with the current common detection technology of broken track in China, this system is more suitable for the railway in uninhabited area and can greatly reduce the pressure of operation and maintenance.
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Design and Realization of Auto-triggering Function of CTC System Across Station in Red Light Repetition Scenario
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Meng Runhu, Chen Hongyu, Han Chengyan
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2023 Vol. 20 (6):
6-10.
DOI:10.3969/j.issn.1673-4440.2023.06.002
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Abstract (
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Based on the auto-triggering routing principle of CTC system, in consideration of the layout of adjacent stations, this paper analyzes the auto-trigger message interaction content between stations under the condition that the red light repetition between stations (block posts) on high-speed railway liaison lines, relieving lines and at junctions of hub lines, and expounds the realization principle of auto-triggering function of CTC system across station in this scenario. This function can be used in various scenarios such as liaison between yards, stations (block posts), and regional interlocking stations to ensure the train operation safety and improve the transportation efficiency.
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Research on Application of AEI Equipment in CIPS System
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Hu Bo
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2023 Vol. 20 (6):
11-14,43.
DOI:10.3969/j.issn.1673-4440.2023.06.003
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Abstract (
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With the continuous improvement of railway informatization, automation and refined management, the train number ground identification equipment (hereinafter referred to as AEI equipment), as a means of CIPS system for accurate management of vehicles in stock, has played an important role in the field operation of station train numbers. This paper mainly studies how to apply AEI equipment to CIPS system more deeply to further play the role of the system and provide means for reducing staff and increasing efficiency.
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Design and Optimization of Simulated Turnout Circuit Based on TYJL-ADX Computer Interlocking
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Xu Haibo, Wang Dingming
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2023 Vol. 20 (6):
15-19.
DOI:10.3969/j.issn.1673-4440.2023.06.004
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Abstract (
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In this paper, the signaling equipment setting of the comprehensive training base of China Railway Kunming Group Co., Ltd. is taken as the background, in order to meet the requirements of on-site signalman skills training, considering the two important factors of outdoor station area and saving funds, the way of "practical + simulation" is adopted, and the design and optimization scheme of the simulated turnout circuit is proposed and verified. The design circuit conforms to the "fail-safe" principle through the interlocking test, and can effectively meet the needs of simulated turnout circuit design in the construction of signal training base.
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Research on Engineering Scheme of Radio Communication System for Long Main Line With High Speed Maglev
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Xie Lianlian, Yukai, Liu Zixue, Wang Zicheng
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2023 Vol. 20 (6):
20-25,49.
DOI:10.3969/j.issn.1673-4440.2023.06.005
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Abstract (
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According to the operation characteristics of high speed maglev of 600 km/h long main line and its demand for radio communication, an engineering scheme of "38 GHz millimeter wave plus DMR" radio communication system is proposed. 38 GHz millimeter wave is used to carry real-time safety data such as maglev train positioning data; DMR is used to realize voice communication for dispatching, passenger transport, operation and maintenance. According to the system business requirements, 38 GHz millimeter wave can also carry high-bandwidth services such as on-board PIS and on-board video. This scheme not only meets the real-time and reliability requirements of traction power supply and operation control system business, but also meets the voice communication requirements of dispatching and passenger transport required by the operation of long main lines while saving investment as much as possible and considering industrial support.
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Research on Integration of Railway Integrated Video Monitoring System and BIM
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Zhao Yao, Li Minxuan, Chai Tianjiao
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2023 Vol. 20 (6):
26-30.
DOI:10.3969/j.issn.1673-4440.2023.06.006
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Abstract (
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This paper researches on the integration method of railway integrated video monitoring system and BIM to improve the user interaction and data application capability. The advantages of applying BIM to build 3D virtual space and associate the monitoring scene data are analyzed, the system integration is realized by building the BIM integration application function module, the data interaction is completed by using the video interface, BIM preprocessing and data sharing, and data integration is performed through 3D virtual space construction, camera range virtualization, and monitoring object data association, to support the realization of monitoring capability simulation, object association call, data overlay display and other application functions, and provide 3D visualization and augmented reality interaction capabilities. By integrating the railway integrated video monitoring system and BIM to form a digital twin system, it will help improve the railway ubiquitous perception ability and have a broad application prospect in the construction of intelligent high-speed railway.
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Discussion on Application Technology of SRv6 in Railway IP Network
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Zhuang Wenlin
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2023 Vol. 20 (6):
31-35.
DOI:10.3969/j.issn.1673-4440.2023.06.007
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This paper proposes a railway data network deployment scheme by studying the technical characteristics and deployment scheme of SRv6, which adopts the network architecture of controller + forwarder to support the provision of end-to-end (E2E) bearer services; by constructing an IPv6-only network, the existing L3/L2VPN network based on IPv4 MPLS forwarding plane evolves to L3/L2VPN and EVPN based on IPv6 forwarding plane, so as to simplify network protocols, optimize network structure and release network resources. support In-band OAM network performance measurement and SLA implementation, and provide users with end-to-end SLA guarantee.
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Research on CTCS-3 Train Control Service Interface Monitoring System Based on 5G-R
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Wu Yu, Dong Chengwen, Li Kun
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2023 Vol. 20 (6):
36-43.
DOI:10.3969/j.issn.1673-4440.2023.06.008
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Based on 5G-R CTCS-3 train control system architecture and 5G-R interface protocol stack, this paper studies the architecture, functions, performance and key technologies of CTCS-3 train control interface monitoring system. Through the analysis of 5G-R signaling, measurement report and CTCS-3 service data, a variety of user identification feature association methods are designed to complete the user's whole process data integration and association, realize CTCS-3 signaling and data tracking, network status monitoring, query and analysis, data statistics and log chart and other functions, fill in the gaps in 5G-R important traffic service monitoring system, and provide real-time, whole-process, multi-angle, multi-dimensional graphical analysis of data for 5G-R wireless network optimization to assist in troubleshooting of CTCS-3 train control system under 5G-R network.
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5G-R and GSM-R Infrastructure Sharing Project Scheme
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Feng Lei, Li Xue, Xu Yang
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2023 Vol. 20 (6):
44-49.
DOI:10.3969/j.issn.1673-4440.2023.06.009
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GSM-R system will evolve to 5G-R system. Before the 5G-R system is put into use, the GSM-R system still needs to be built, and the 5G-R system and the GSM-R system will operate simultaneously for a period of time in the future. Therefore, this paper makes an in-depth discussion from the aspects of equipment evolution, service realization and infrastructure sharing, and puts forward the 5G-R and GSM-R infrastructure sharing project scheme, to ensure smooth transition from GSM-R to 5G-R and protect investment in railway construction.
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Application of Protection Mechanism Based on Railway GPON System
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Yang Liuqingqing
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2023 Vol. 20 (6):
50-54,76.
DOI:10.3969/j.issn.1673-4440.2023.06.010
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In order to meet the demand for increasing types of railway GPON system bearer services, combined with the high bandwidth, high reliability and high safety requirements of railway access network, this paper mainly introduces the protection mechanisms of GPON system and puts forward suggestions on the applicable scenarios of various protection schemes. Focusing on the actual situation of Beijing-Guangzhou railway service carrying, the application of different protection mechanisms in different scenarios is studied, so as to improve the safety and reliability of railway GPON systems under the premise of saving construction costs.
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Calculation Method of Train Running Time Based on Constant Impact Rate Model
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Zhou Lihua, Wu Liang, Chai Rongyang, Peng Chaoyang, Li Taotao, Zhang Chen
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2023 Vol. 20 (6):
60-64.
DOI:10.3969/j.issn.1673-4440.2023.06.012
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The existing running time control methods of signal system need to be replanned when applied to different lines, slow response to time error and have large error when temporary speed limit exists. Based on the constant impact rate model, this paper studies the time prediction method under the section command speed set, calculates the remaining running time of the train, and adjusts the section command speed set in real time according to the real remaining running time, so as to control the train running efficiently and punctually. The field test is carried out on a subway line. The result shows that the error between the actual running time and the set time is less than 3.5% based on the constant impact rate model calculation method, which can make the global and reasonable planning of the train running speed in real time and online, and ensure the train running efficiency and comfort requirements.
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Research on 5G Wireless Communication Application Scheme for Suburban Railway
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Xiong Dongyu
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2023 Vol. 20 (6):
65-70.
DOI:10.3969/j.issn.1673-4440.2023.06.013
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In view of the problems in suburban railway wireless communication, such as various types of systems, isolated systems, complex maintenance and upgrading, and multiple intelligent requirements, this paper summarizes the application requirements of various scenarios of suburban railway, analyzes the performance indicators of 5G wireless coverage, and deeply discusses the unique advantages of 5G networks in service integration, emergency communication and intelligent applications. Finally, combined with the characteristics of the industry application, the feasible business cooperation mode is discussed. From the perspective of terminal, access network, bearer network and core network, the general architecture scheme and operation and maintenance standards for 5G public network are given.
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Research on Multi-standard Compatibility Method of Light Rail CBTC and DTC Signal
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Jiang Kun, Yang Difei, Liu Jia
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2023 Vol. 20 (6):
71-76.
DOI:10.3969/j.issn.1673-4440.2023.06.014
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The signal processing scheme in the rail transit extension line is an important factor affecting the smooth completion of the entire project. Due to the expansion of the line, the signal control systems of the existing line and the extension line may have inconsistent standards. This paper proposes a multi-standard compatibility method for existing and extension lines using CBTC (communication-based automatic train control system) and DTC (digital track circuit control system) respectively, or existing and extension lines using DTC and CBTC respectively. It is used to meet the requirements of actual lines.
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Discussion on Design Scheme of Passenger Ticket System of Public Transport Operation for Suburban Railway
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He Quanbo
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2023 Vol. 20 (6):
77-82.
DOI:10.3969/j.issn.1673-4440.2023.06.015
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The public transport operation of suburban railway has the characteristics of both national railway and urban rail transit. On one hand, the operation organization mode should meet the requirements of national railway; on the other hand, it should have the commuting functions of urban rail transit, such as high-density departure, multi-point transfer and quick travel with transportation cards/QR codes. Therefore, it is necessary to establish a refined ticket system design scheme to meet the special needs of the public transport operation of suburban railway, which has become a key technical difficulty in such projects. With a detailed demand analysis, this paper proposes the mainstream design schemes of ticket mechanisms and ticket systems suitable for the public transport operation of suburban railway, compares them, and gets recommended scheme. It can provide new ideas for the design and construction of similar suburban railway projects in the future and has a certain reference value.
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Analysis on Key Points of Signal System Operation Demand of New Urban Rail Transit Project
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Cao Qibin
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2023 Vol. 20 (6):
83-86,92.
DOI:10.3969/j.issn.1673-4440.2023.06.016
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The signal system of urban rail transit is the key control equipment of rail transportation. In addition to meeting relevant specifications and standards, the functional design of signal system pays full attention to and meets the actual traffic needs of operators and users, which is a key link to improve the applicability of signal system of newly built lines. This paper discusses and analyzes some key points of operation requirements of signal system from the perspective of actual transportation demands of operating units, combined with the actual preparation of many new lines in the industry over the years, taking typical scenarios of typical equipment as an example.
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Research on Processing Logic of Marshalling and Unmarshalling Routes
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Su Xiuyuan
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2023 Vol. 20 (6):
87-92.
DOI:10.3969/j.issn.1673-4440.2023.06.017
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During urban rail transit operation, the passenger flow presents the characteristics of tidal distribution. In order to reduce energy consumption on the premise of improving the operation efficiency, the online marshalling and unmarshalling operation is added in the FAO system, and the processing logic of marshalling and unmarshalling routes is added in the computer based interlocking system. This paper expounds the new requirements of interlocking route control from marshalling and unmarshalling operation in FAO system. At the same time, the specific processing logic of the marshalling and unmarshalling routes is analyzed and studied in detail.
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CBTC and CTCS-2 Compatible and Interoperable Scheme
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Zhang Wei
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2023 Vol. 20 (6):
93-97.
DOI:10.3969/j.issn.1673-4440.2023.06.018
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This paper proposes three feasible schemes to solve the compatibility and interoperability between CBTC and CTCS-2 (including C2+ATO) systems: "dual trackside", "dual onboard" and "compatible onboard", and compares and analyzes the three schemes, and recommends the " compatible on-board ". The onboard software and hardware configuration and trackside equipment configuration of the scheme are described through the compatible onboard system structure diagram. It focuses on the detailed description of the switching scene. According to different running directions, the obtaining of the movement authority (MA) in the switching scene, the onboard-trackside information interaction content, temporary speed restriction (TSR) and the MA control area, the issuing time of switching information, the arrangement principle of trackside equipment, the operation mode in switching failure, and the operational requirements for drivers, etc. are analyzed in detail.
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Case Study of Train Stopping at CTCS-2/CTCS-3 Boundary of Block Post
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Zhang Guofang
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2023 Vol. 20 (6):
102-105.
DOI:10.3969/j.issn.1673-4440.2023.06.020
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The train control system is the core equipment to ensure the safe operation of high-speed trains. During normal operation of the train, the CTCS-2/CTCS-3 (C2/C3 for short) level transition should be automatically carried out on different lines. This paper discusses and analyzes the unsuccessful C2/C3 level transition caused by sending the kilometer post/station name and other C3 information from the balise group between the switching balises in a special scenario, which lead to a stop, and puts forward solutions to provide reference for analyzing and solving similar problems.
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Research on Overseas Railway Online Ticketing System
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Ji Wei, Yang Zhi, Wu Hualin, Lu Xiaotong, Jiao Xiaohui
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2023 Vol. 20 (6):
106-111.
DOI:10.3969/j.issn.1673-4440.2023.06.021
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Online ticket sales has become an inevitable development trend of overseas railway ticketing systems. The advanced nature and rationality of its design scheme are closely related to the efficiency of operation management and the quality of passenger services. This paper fully considers the characteristics of overseas railways, and through sufficient demand analysis, carries out adaptive research and innovation on technical solutions, and puts forward a design scheme of overseas railway online ticketing system, which provides a reference for the design of overseas railway online ticketing system.
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月刊
Monthly
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第21卷 第6期 总第期
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Vol.21 No.6 S.No.
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出版:
2024-06-24
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Published on:
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创刊:2004 年
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First Issue: 2004