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Research on Verification Method of Balise Transmission Module Based on UVM
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Liu Guangyu, Ma Pan, Liu Xiaoting, Meng Boyang, Lin Ziming
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2023 Vol. 20 (9):
7-10.
DOI:10.3969/j.issn.1673-4440.2023.09.002
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Abstract (
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With the continuous improvement of FPGA design logic, the difficulty of testing is also increasing, and the traditional verification model based on development tool can no longer meet its testing requirements. Aiming at the FPGA of the balise transmission module (BTM) decoding board, this paper designs a verification platform based on UVM, and realizes the automatic simulation test of the code. The platform uses the method of random driver and direct testing to generate test incentive sequences, which can achieve the requirement of test coverage of FPGA code through fewer test cases. At the same time, the platform can realize parallel simulation of any number of cases as the server resources permit, and further reduce the time cost of testing.
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Design of SIL4 Safety Platform for Train Control System Based on TMS570
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Pei Zhibin, Lü Yuanyuan
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2023 Vol. 20 (9):
15-18,41.
DOI:10.3969/j.issn.1673-4440.2023.09.004
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This paper researches the security characteristics of TMS570 CPU and applies it to the train control system. A SIL4 level safety platform based on TMS570 processor is constructed with dual two out of two architecture, the specific implementation scheme of CPU security self-test design is proposed, and the technical points and exception handling measures of CPU security self-test are discussed, which is helpful for users to realize the security functions required in EN 50129 standard through simple configuration and processing.
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Influence of Railway Line Attributes on Signaling System and Solutions
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Xie Lanying, Xu Haixiang
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2023 Vol. 20 (9):
19-22.
DOI:10.3969/j.issn.1673-4440.2023.09.005
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Abstract (
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According to the definition of main line and the provisions of signal aspect and indication in Technical Management Regulations for Railway (High Speed Railway) (TG/01-2014) and the provisions of temporary speed restriction design in Technical Specification for Temporary Speed Restriction of Train Control System (Q/CR 662-2018), this paper analyzes that the line design and signal design are not unified for the processing of main line in the station, It is the reason why the speed restriction cannot be issued, and explores reasonable solutions.
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Study on Signal Transition Processing Scheme of Sangzidian Station
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Fu Zhi, Zhang Wenfei
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2023 Vol. 20 (9):
23-29.
DOI:10.3969/j.issn.1673-4440.2023.09.006
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Based on the double-line reconstruction project of Sangzidian railway station on Handan-Jinan railway, this paper proposes a special processing scheme for connecting turnout of switching lead when this turnout has been removed. In order to ensure safety of railway traffic during the signal transition, switch normal indication of transition turnout is inserted into the lighting circuit of protection signal. According to the different position and enable timing of inserting turnout, practical treatment methods of transition turnout control circuit are proposed separately, so as to meet the needs of railway transportation. The processing method of inserting turnouts in the switchless section during the transition period is discussed, and a reasonable transition plan is proposed to successfully complete the station signal transition. Through the summary of the signal transition scheme in the process of station transformation, these suggestions presented in this paper can supply references for transition scheme for station reconstruction project in the future.
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Application Research on Intelligent High-speed Railway ATO Based on GPRS
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Wang Jundong
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2023 Vol. 20 (9):
30-35.
DOI:10.3969/j.issn.1673-4440.2023.09.007
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This paper introduces the operation mode of CTCS-3+ATO train control system and the relevant parameters of GPRS. By analyzing the monitoring data of the first domestic high-speed railway line using CTCS-3+ATO mode for more than one year, the high-speed railway ATO service fully meets the requirements of the specifications formulated by China Railway Group in terms of function and performance, and has no impact on the original CTCS-3 service, which proves the feasibility of using packet domain GPRS network to carry train control services. In order to enhance the availability of GPRS grouped domain channels and ensure the normal operation of ATO, this paper puts forward reasonable suggestions on BSC resource utilization, cell reset and ATO device protection.
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Research on Railway GSM-R System Core Network Transformation Project Scheme
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Zhou Hailong
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2023 Vol. 20 (9):
36-41.
DOI:10.3969/j.issn.1673-4440.2023.09.008
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Based on the demand of core network transformation of GSM-R system, this paper proposes core network transformation schemes. For MSC transformation, the master/standby MSC mode of R4 network architecture and MSC pool mode of R4 network architecture are proposed, and the schemes are compared. For SGSN transformation, a network scheme compatible with two BSC/ PCUs is proposed, and the scheme is compared. For GGSN transformation, two redundant modes are proposed. The corresponding requirements for site selection and bearer network channel are put forward. Finally, the cutover scheme of old and new core network equipment is discussed.
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Research on Key Technologies of Packet Domain Simulation System in GSM-R Networks
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Zhang Guozhen, Tian Hongda, Li Jie, Guo Ruibin
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2023 Vol. 20 (9):
42-47,60.
DOI:10.3969/j.issn.1673-4440.2023.09.009
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In the railway digital mobile communication system (GSM-R), General Packet Radio Service (GPRS) system mainly carries non-real-time services such as scheduling and status monitoring. In order to improve the efficiency of research and development, a GPRS simulation system that meets the requirements of GSM-R is required. This paper first introduces system architecture of GSM-R packet domain simulation system, and explains the technical difficulties of simulation system, then describes the difference between simulation system and current network in the signaling process. The whole IP protocol simulation method is proposed and a GSM-R packet domain simulation system is built that meets the requirements of R & D and testing. Finally, the system performance indexes such as transmission rate and network delay are tested, which shows that the designed GSM-R packet domain simulation system can support non-difference communication of real railway application products in the simulated network environment.
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Integrated Scheme Design of Railway Station Energy Management System
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Zhang Yanjun, Zhao Yao
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2023 Vol. 20 (9):
48-53,70.
DOI:10.3969/j.issn.1673-4440.2023.09.010
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In order to make full use of energy consumption monitoring, BAS, intelligent lighting and other systems related to energy management in the station, and establish a resource sharing energy management system platform, this paper studies the integration scheme of energy management system. Firstly, the functional requirements of the whole system are analyzed. Then it discusses the establishment of standardized energy consumption model and energy consumption KPI index system of the railway station, which provides the basis for the design of integrated platform metering system. On this basis, the overall architecture of the energy management system is given, and the integration scheme is designed according to this architecture.
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Application of Integrated Video Monitoring Technology in Nanning-Chongzuo High-speed Railway
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Xie Qingchu
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2023 Vol. 20 (9):
54-60.
DOI:10.3969/j.issn.1673-4440.2023.09.011
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With the continuous development of integrated video monitoring technology of high-speed railway, the existing video monitoring technology cannot meet the requirements of the new situation. The development of integrated video monitoring technology has effectively promoted the construction of high-speed railway. Taking the application of integrated video monitoring technology in the construction of Nanning-Chongzuo high-speed railway as an example, this paper expounds the scheme and analysis of integrated video monitoring technology, which provides a reference for the subsequent construction of high-speed railway integrated video monitoring system.
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Overlap Release Optimization Scheme for Interoperability of FAO System
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Zhang Nanqiao, Geng Peng
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2023 Vol. 20 (9):
61-65.
DOI:10.3969/j.issn.1673-4440.2023.09.012
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Interoperability of FAO system no longer requires drivers to monitor train operation at GoA4. In terms of the division of responsibility on train safety monitoring between human and system, interoperability of FAO system is clearly different from interoperability of CBTC system. Therefore, the existing overlap release scheme for interoperability of CBTC system is no longer applicable to interoperability of FAO system, and there are safety risks. This paper focuses on the normal overlap release methods when the train has stopped at the platform. First, this paper analyzes the applicability of existing overlap release scheme; Then, this paper proposes two optimization principles including using the train control level information from onboard signaling equipment and using the overlap authorization information from trackside signaling equipment, and proposes the corresponding overlap release optimization schemes. Finally, this paper compares the advantages and disadvantages between the above-mentioned overlap release optimization schemes, and presents suggestions for use which met the actual demands.
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Application of Centralized Image Judgment Technology in Urban Rail Transit Security Check System
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Qin Liu
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2023 Vol. 20 (9):
66-70.
DOI:10.3969/j.issn.1673-4440.2023.09.013
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Conventional security check system is equipped with a graphic workstation and judges at each security checkpoint. Each security checkpoint shall judge images independently. This mode will cause uneven workload and waste of human resources. This paper introduces the function, technical architecture, system composition and application of remote centralized image judgment technology based on intelligent identification of prohibited articles. Combined with the characteristics of rail transit security check, this paper discusses the practical application of centralized image judgment technology in urban rail transit.
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Research on Fusion Control Technology of Urban Rail Transit Signal and Vehicle
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Liu Xiaolong, Zhu Jinzhao, Long Fei
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2023 Vol. 20 (9):
71-76,96.
DOI:10.3969/j.issn.1673-4440.2023.09.014
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Based on Qingdao Line 6 project, this paper proposes a fusion technology of signal and vehicle, which redefines the boundary of signal and vehicle. With the goal of "safety, reliability, efficiency, convenience, green and environmental protection", it focuses on the intelligent upgrading of rail vehicles and on-board core systems, and constructs an integrated solution of intelligent train control. The fusion system includes the following functions and optimization: single vehicle and multi-vehicle energy-saving operation control function; integrated intelligent vehicle control optimization; integrated full-automatic coupling and uncoupling function; real-time tracking and guiding function of passenger capacity; integrated intelligent self-test function. This paper introduces the design and implementation of the fusion control technology of urban rail transit signal and vehicle in detail.
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Research and Application of Man-vehicle Positioning System in Subway Construction
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Si Fuqiang
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2023 Vol. 20 (9):
77-82.
DOI:10.3969/j.issn.1673-4440.2023.09.015
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In the subway construction, the scale of the mechanical construction operation are increasing, homework construction site environment becomes complex, and illumination is insufficient, the underground construction work content high danger coefficient, the number of staff and scattered, man-machine hybrid operation is frequent. With the deepening of digital construction, there is an urgent need for a scientific, efficient and accurate personnel and vehicle management and safety management system. The third-party monitoring platform can be established to accurately locate personnel and vehicles on the site. On the one hand, location data analysis can help managers to achieve site safety management and efficiency management. On the other hand, the voice alarm and sound and light alarm on the platform can improve the ability of safety control on the construction site.
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Research on Improving Reliability of CBTC Train-Ground Wireless Communication Based on PRP
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Yang Zhen, Kuang Ronghua, Cai Jingqiao, Xiong Wen
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2023 Vol. 20 (9):
83-86,100.
DOI:10.3969/j.issn.1673-4440.2023.09.016
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In order to solve the problem of wireless interference faced by existing metro lines using WLAN scheme, this paper proposes a train-ground communication redundancy scheme based on PRP. Wireless links of different standards are introduced to make the single network information of signal train-ground communication transmitted through redundant channels, so as to improve the reliability of train-ground communication in signal system. The scheme has been tested and verified in the laboratory and on-site on metro lines. In this paper, the test results are compared and analyzed, and the application scenario of PRP scheme in signal system is prospected.
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Problems and Solutions Caused by Different Types of Track Circuits
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Da Xingliang
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2023 Vol. 20 (9):
92-96.
DOI:10.3969/j.issn.1673-4440.2023.09.018
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When there are asymmetric high-voltage pulse track circuit and 25 Hz phase-sensitive track circuit in the main line of the station at the same time, due to the inconsistent time characteristics of the two track circuit systems, there are phenomena of missing unlocking, train loss and code loss in the track section during single locomotive operation, causing interference to normal train operation. By analyzing the time characteristics of the two track circuit systems in detail, this paper analyzes three operation fault scenarios, and gives different solutions for each scenario, which has certain guiding significance for future engineering design.
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Thinking of Test Methods for Adding Section Occupancy Logic Check on Existing Railways
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Su Xiangqi
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2023 Vol. 20 (9):
97-100.
DOI:10.3969/j.issn.1673-4440.2023.09.019
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Abstract (
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The logic check function of section track circuit is realized mostly by adding the function of TCC in the high-speed railways and inter-city railways, and by adding the relay circuit and QJK in conventional speed railways . In the case of non-synchronous overhaul of existing lines, adding logic check function is restricted by construction conditions, time of maintennance-skylinght, personnel organization, etc., which is difficult and risky. According to the actual construction situation of existing railways, this paper summarizes the test methods in the above two ways respectively, discusses the test items, test methods and test contents in detail, optimizes the interlocking test scheme, reduces the workload and ensures that the interlocking relationship is absolutely correct.
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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