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Study on Monitoring Technology for Switching Resistance of Railway Turnout
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Liu Zhenhua
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2023 Vol. 20 (5):
6-9,15.
DOI:10.3969/j.issn.1673-4440.2023.05.002
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Abstract (
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The turnout switching resistance is the most direct indicator of the turnout working state. It is also an important test item for railway integrated commissioning and testing, and an important item for the on-site operation and maintenance of turnout switching equipment. The turnout switching resistance shall meet the indicator requirements, and an increase in the turnout switching resistance will increase the load of the switch machine and lead to motor idling and turnout switching failure in serious cases. This paper introduces the meaning and composition of the turnout switching resistance, discusses the online monitoring technology for the turnout switching resistance, and proposes solutions to practical problems, which has positive significance for the development of intelligent operation and maintenance of the turnout switching system.
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Integrated Design of Interlocking Simulation and Field Control in Teaching and Training Base
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Liang Xiaobo
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2023 Vol. 20 (5):
16-20.
DOI:10.3969/j.issn.1673-4440.2023.05.004
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Abstract (
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This paper carries out requirements analysis of the interlocking system in the teaching and training base of a university, and focuses on the application characteristics of such scenarios as its daily teaching and practical training, qualification examination for railway locomotive driver and occupational skill appraisal for signaling professional. The computer based interlocking system is used to drive the switching relay interface, and the integrated design of the interlocking operation indication and control circuit is adopted to implement the two control modes of the interlocking system, i.e., "simulated control and field control", and achieve the one-key switching between the two control modes.
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Discussion on Test Scheme for Train Integrity Functions in New Train Control System
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Wei Bo
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2023 Vol. 20 (5):
21-26,31.
DOI:10.3969/j.issn.1673-4440.2023.05.005
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Abstract (
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This paper analyzes the operation scenarios of train integrity related functions at the system level, utilizes the sequence diagram and flow chart to model the information interaction and processing logic among onboard equipment, EOT equipment and wayside equipment, and designs the test cases for the normal scenario, the fault scenario with a single vehicle in operation and the fault scenario with two trains in tracking state. The functions related to train integrity and the feasibility of test cases are verified through a laboratory half-physical simulation test platform. The proposed design method for test cases has important reference significance for the formulation of the test scheme for the train integrity related functions in the new train control system.
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Design and Application Demonstration of Perimeter Protection System Based on Space-Air-Ground Integrated Monitoring
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Wang Liang, Tan Jinlin, Sun Chenhong, Wu Yi, Wang Weiming, Yang Xiaotian, Liu Yan
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2023 Vol. 20 (5):
32-38.
DOI:10.3969/j.issn.1673-4440.2023.05.007
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Abstract (
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Focusing on the core requirements of railway safety precaution, this paper designs an integrated information service system for perimeter protection along high-speed railways based on space-air-ground integrated monitoring, including four key control scenarios and five perception means, and conducts application demonstration and analysis of the four scenarios. The proposed system can ensure the safety of stations and high-speed railway lines, and achieve all-weather, intelligent, visualized, automatic and three-dimensional early warning of high-speed railways. It can also improve the technical capability of security management and safety prevention and control along high-speed railway lines.
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Research on Cyber-security of Railway Integrated Video Monitoring System
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Xu Hui
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2023 Vol. 20 (5):
39-43.
DOI:10.3969/j.issn.1673-4440.2023.05.008
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Abstract (
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This paper mainly introduces the background information and cybersecurity status of the railway integrated video monitoring system, studies and analyzes the cybersecurity arrangements of such video system with reference with Technical Requirements for Cybersecurity of Railway Communication Part 4: Integrated Video Monitoring System (Q/CR 783.4-2021), and gives suggestions on the cybersecurity model of such video system. This research on the cybersecurity construction of the railway integrated video monitoring system can bring about more effective protection for the cybersecurity of such video system in the future.
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Research on Shunting Planning System for Railway Passenger Station
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Chen Yi
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2023 Vol. 20 (5):
44-47.
DOI:10.3969/j.issn.1673-4440.2023.05.009
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Abstract (
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By analyzing shortcomings of the current inventory carriage management and shunting planning system for railway passenger stations, and utilizing advantages of the shunting planning system for freight marshalling yards, this paper puts forward a time slice-based optimization method for inventory carriage calculation, providing details from the aspects of acquisition of planned inventory carriages and calculation of inventory carriages on the arrival and departure track. It also introduces a control method for shunting plan execution sequence, solving the problem of overlapping operation under the collaborative operation mode of multiple shunting locomotives. The shunting plan management system designed and developed with the above methods has been implemented in Shenyang North Railway Station, which meets the requirements of the station on the intelligent management of vehicles, and improves the efficiency and quality of shunting planning under the collaborative operation mode of multiple shunting locomotives.
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Optimization of Intelligent Detection Technology for Train Operation and Freight Train Loading States
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Gu Wen
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2023 Vol. 20 (5):
48-52,56.
DOI:10.3969/j.issn.1673-4440.2023.05.010
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Abstract (
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The proposed technical optimization is used to solve such problems as "uncertainty", "high intensity" and "low efficiency" in the traditional operation mode of the current station train receiving and departure operations and railway cargo inspection operations relying on manual whole-process monitoring and subjective judgment. The various collected data at the detection points are effectively integrated, such technologies as intelligent image recognition, speech recognition, thermal imaging, machine learning algorithm and system integration are comprehensively utilized, and the train operation and freight train loading states are intelligently detected in the multiple-direction, multiple-angle and multiple-type manner, to achieve the automatic recognition and labeling of and voice alarming for various abnormal train states. This study has great significance for the comprehensive improvement of the quality and efficiency of train receiving and departure operations and freight inspection operation, and also the guarantee of the safety of railway transportation.
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Discussion on Energy Saving Measurement of Urban Rail Transit Trains
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Xiao Meng, Guo Jia
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2023 Vol. 20 (5):
57-61,80.
DOI:10.3969/j.issn.1673-4440.2023.05.012
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Abstract (
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Energy saving measures of the signaling system for urban rail transit center around train control, and mainly include single train related energy saving, train diagram related energy saving, and collaborative energy saving. If the effect evaluation of energy-saving measures is only based on statistics, the corresponding relationships cannot be properly shown. This paper proposes an energy-saving measurement method with predictive ability, which can determine corresponding relationships between energy-saving measures and effects and provide effective support for intelligent algorithms in the reference calculation of energy-saving effects.
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Integrated Design Scheme of Signaling System and Platform Screen Door under FAO
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Cui Huishan, Gai Kerong, Li Xuezhi, Liu Yimin
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2023 Vol. 20 (5):
62-66.
DOI:10.3969/j.issn.1673-4440.2023.05.013
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Abstract (
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As the fully automatic operation (FAO) system raises new functional and safety requirements for platform screen doors (PSD), and flexible train consist and Vehicle-vehicle Based Train Control (VBTC) further increase the reliability and availability requirements for PSD, the concept of integration of signaling system and PSD has been proposed and gradually clarified. This paper analyzes the problems of the existing PSD and the scheme and characteristics of integrated design in engineering practice. It also proposes two schemes of integrated design of signaling system and PSD under VBTC, i.e. integrated design featuring PSC based on OC and integrated design featuring DCU directly controlled by OC, and compares the effects of the two schemes.
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Analysis of Storage Failure Mechanism of Enhanced Contact Relay
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Sun Zhifa, Cheng Shijie
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2023 Vol. 20 (5):
67-70.
DOI:10.3969/j.issn.1673-4440.2023.05.014
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Abstract (
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The relay contacts, as an important part of relay, are vulnerable to erosion. Once any contact becomes abnormal, this problem may cause such abnormal situations as contact adhesion, arcing and poor contact, and affect the mechanical and electrical properties of the whole relay, so that the relay cannot be energized and de-energized normally, and the running efficiency and safety of urban rail transit are affected. Building on actual relay damage cases in the storage process, and taking JYJXC-160/260 polarized enhanced contact relay as an example, this paper aims to analyze the relay damage degree, damage cause, storage environment and storage method, and summarize the impacts of two factors in storage conditions, i.e., environmental factors and storage state, on the performance of relays, which provides maintenance reference for relevant practitioners.
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Design and Implementation of Ticket Management System for Urban Rail Transit
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Chen Ying, Fu Baoming, Zhang Ning, Zhang Ludong, Lu Haiting
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2023 Vol. 20 (5):
71-75.
DOI:10.3969/j.issn.1673-4440.2023.05.015
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Abstract (
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Aiming at the problems of low efficiency and cumbersome process in ticket management for urban rail transit, this paper proposes a system solution for ticket management on the basis of an analysis of the service requirements of daily ticket management and in view of the development trends of digitization, informatization and intelligentization of urban rail transit, and analyzes the system solution from the perspectives of service functions and system architecture. The proposed system solution has been applied to the ticket management of Suzhou Rail Transit, which reduces the workload of station ticket personnel, and reduces the personnel costs and improves the ticket management of Suzhou Rail Transit. The design and implementation of the proposed ticket management system for urban rail transit provides ideas for the informationization of ticket management for urban rail transit and experience for the ticket management of the industry.
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Analysis and Solution for Insulation Burning of Switch Machine
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Wei Wentao, Wei Qian
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2023 Vol. 20 (5):
76-80.
DOI:10.3969/j.issn.1673-4440.2023.05.016
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In actual metro operation, the turnout insulation damage can easily cause serious consequences, such as equipment burning, traffic interruption, passenger panic, and constitute an urgent problem to be solved in metro. Taking S700K switch machine used in Guangzhou Metro Line 4 and Line 5 as an example, this paper analyzes and discusses turnout insulation burning, and proposes corrective and improvement measures, so as to ensure the stable and normal operation of turnout equipment and guarantee operation safety.
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Interface Analysis of Signaling System and PSD System for
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Yu Qinlong
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2023 Vol. 20 (5):
81-85,91.
DOI:10.3969/j.issn.1673-4440.2023.05.017
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Abstract (
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This paper studies the interface of the signaling system and platform screen door (PSD) system of Shanghai metro line 13 to introduce the linkage principles of the interfaced signaling equipment and PSD equipment and several working modes of PSD during metro operation. It also analyzes the linkage failures of the signaling system and PSD system through on-line monitoring and log analysis to provide experience in handling PSD system linkage failures in similar systems of metro networks during future operation.
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Cause Analysis and Countermeasures of "Dead Zone" in Track Circuit
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Chen Bo
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2023 Vol. 20 (5):
86-91.
DOI:10.3969/j.issn.1673-4440.2023.05.018
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Starting from a classification of "dead zones" in track circuit, this paper objectively analyzes the cause reasons of "dead zone" and the harmfulness in track circuit application, and proposes the countermeasures, i.e., eliminating the "dead zones", shortening the "dead zones" and relocating the insulation joint at the scissors crossover. Considering the current situation of "dead zone" management, it also proposes such suggestions as source control through improved design, improvement of existing equipment and improvement of rules and regulations, which have strong operability and high reference significance.
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Analysis of Impacts of Compensation Capacitor Failure on ZPW-2000A Track Circuit
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Luo Ying
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2023 Vol. 20 (5):
92-96.
DOI:10.3969/j.issn.1673-4440.2023.05.019
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Abstract (
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The sections longer than 300 m in ZPW-2000A track circuit need to be provided with compensation capacitance, which can have series resonance with rail inductance, makes the rail tend to be purely resistive, reduces the rail impedance, and increases the rail signal transmission energy. Any fault of the compensation capacitor can affect such track circuit performance indicators as track circuit adjustment, track circuit shunt and locomotive current. Utilizing the track circuit simulation calculation platform, this paper conducts quantitative analysis on the track circuit performance under the conditions of capacitor line breakage and capacitor capacitance drop, and proposes the change rules of track circuit adjustment, track circuit shunt and locomotive current after capacitor failure.
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Development of New Heavy Hammer Piece for Railway Signal Relay
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Li Xueqiang
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2023 Vol. 20 (5):
97-100.
DOI:10.3969/j.issn.1673-4440.2023.05.020
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Abstract (
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The heavy hammer, as a part of the armature assembly of the magnetic circuit system of the railway signal relay, plays the role of counterweight in the mechanical load and magnetic circuit balance of the relay to ensure the reliable falling of the relay armature. By analyzing the structural dimensions and material of the existing heavy hammer pieces, and considering the new process technology, this paper proposes the structural dimensions and material of a new heavy hammer piece. It focuses on the design input, theoretical calculation and physical verification of the heavy hammer piece, and carries out comparative analysis on the physical objects before and after the development work. The successful development of the new heavy hammer piece will improve the anti-corrosion performance and application environment of heavy hammer parts, completely eliminate the impacts of the electroplating process on environmental quality, improve the production efficiency of parts, and shorten the production cycle of products.
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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