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Research on Adaptability of Low Track Bed of ZPW-2000A Integrated Track Circuit in Station
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Shao Jiasheng
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2022 Vol. 19 (11):
1-5.
DOI:10.3969/j.issn.1673-4440.2022.11.001
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Abstract (
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In order to upgrade the signaling equipment of Guangzhou-Shenzhen Line I and Line II and avoid the "red light strip" failure caused by the low resistance value of the existing track bed in the station, this paper conducts a research on the adaptability of the low track bed of ZPW-2000A integrated track circuit in the station. Through testing and simulation calculation and analysis of the field operation data of ZPW-2000A integrated track circuit in the station after upgrading the signaling equipment of Guangzhou-Shenzhen Lines I and Line II, the variation trend of voltage and current is the same between the simulation results and the measured values, and the simulated values are consistent with the measured values. According to the calculation with the lowest track bed resistance in the section, when the track bed resistance is 0.6 Ω·km, the limit length is 300 m. The simulation calculation and actual measurement show that the track bed in the station is suitable for the application conditions of ZPW-2000A integrated track circuit, and ZPW-2000A integrated track circuit is well applied in the field.
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Optimization Scheme of Signaling Integration Implementation for Anhui Section of Nanchang-Jingdezhen-Huangshan Railway
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Yang Weiping
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2022 Vol. 19 (11):
6-14.
DOI:10.3969/j.issn.1673-4440.2022.11.002
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Abstract (
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This paper focuses on the asynchronous construction period of adjacent high-speed railways. In order to maximize the reduction of the impact of the commissioning and access on the existing lines, taking the newly built Nanchang-Jingdezhen-Huangshan railway as an example, this paper studies and optimizes the plan to put the railway into operation in steps and sections from such aspects as the necessity of new RBC / TSRS, RBC handover point setting, TSRS control scope, relay station affiliation, interface station system configuration, synchronous implementation of construction and installation projects, and interface division with existing lines, so as to achieve the engineering construction concept of "integrated construction and maintenance". The study of the plan provides reference for the construction, design and implementation of other high-speed railway signaling projects in the future.
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New Route Control System for Railway Freight Yard Operation
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Chen Anguan
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2022 Vol. 19 (11):
15-19,23.
DOI:10.3969/j.issn.1673-4440.2022.11.003
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Abstract (
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In this paper, a new type of interlocking route control system and operation method using traditional shunting locomotives as means of transport operation is proposed in accordance with the transportation modes and characteristics of multimodal railway container yard. The system has simple structure, easy equipment transformation and high reliability. The control method has mature technology, strong compatibility, flexibility and reliability, makes full use of existing railway equipment and facilities to adapt to the requirements of direct transport of vehicles and vessels in automatic railway container yard ensures the safety of operation, and improves the efficiency of railway loading and unloading operation.
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Design Scheme of Multiple Successive Routes Based on Computer Interlocking
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Jiang Shuang
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2022 Vol. 19 (11):
20-23.
DOI:10.3969/j.issn.1673-4440.2022.11.004
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Abstract (
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Based on computer interlocking, this paper puts forward a design scheme suitable for operation scenarios of multiple successive routes on the basis of the original continuous route. The specific design scheme includes the arrangement of multiple successive routes, the clearing of home signal and the releasing scheme of multiple successive routes under various operation scenarios. The scheme has been applied to Yanzishan Station of Datong Coal Mine Group, which meets the requirements of the station operation and runs well on site.
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Construction and Application of Signaling Equipment Information Platform
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Chen Meiling
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2022 Vol. 19 (11):
29-31,36.
DOI:10.3969/j.issn.1673-4440.2022.11.006
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Transportation equipment statistics is an important basis for railway transportation production. In view of the wide variety of signaling equipment, the relative independence of each system, and the insufficient sharing of equipment information, this paper proposes to establish a scientific equipment statistics platform based on the history of signaling equipment, monitoring and detection, maintenance and other systems. The platform integrates and unifies diversified data, provides statistics and analysis results of basic data after processing, realizes information sharing and improves work efficiency. It is of great practical significance for the development of refined management and analysis of railway transportation equipment. The construction and application of the signaling equipment information platform will improve the information level of railway signaling equipment management and promote the innovative development of signaling technology.
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Model-based Test Case Generating Method of Interlocking Software
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Peng Liwei, Song Pengfei, Jiang Xueying, Xie Lin
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2022 Vol. 19 (11):
32-36.
DOI:10.3969/j.issn.1673-4440.2022.11.007
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Abstract (
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Interlocking software test is one of the important means to ensure interlocking safety. In order to solve the problems of low generality and high labor cost of interlocking software test, a method of general-purpose interlocking software test case generation was proposed. This paper analyzes the problems of traditional test methods and proposes a test case generation method of general interlocking software. Combined with the technical specifications for computer based interlocking and the functional requirements of the software, it is transformed into the state object that can be identified by tools, and the identified states are divided to form several quaternion combinations to generate the tree network structure of interlocking state transition. Through the analysis of the established tree network structure, the interlocking condition and target state of several quaternion combinations in the structure are obtained and the abstract test cases are generated, and each group of abstract test cases are deduced according to the pre-defined input to generate a series of concrete test cases. The cases generated using this method can cover all the interlocking test functions in known scenarios, reduce the time of manual writing of cases, reduce the probability of errors caused by human factors, and improve the test reliability.
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Study on GSM-R Coverage Scheme for Gehu Bridge of Nanyanjiang Intercity Railway
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Wei Min, Hu Xueyang, Ge Weitao
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2022 Vol. 19 (11):
37-41.
DOI:10.3969/j.issn.1673-4440.2022.11.008
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Due to the serious reflection of the water surface to electromagnetic wave, the wireless signal on the water surface is more complicated, and the communication base station cannot be built on the water surface. Therefore, the wireless coverage of GSM-R has become a difficult problem in railway construction. Taking Gehu bridge of Nanyanjiang intercity railway as an example, this paper puts forward four kinds of GSM-R wireless coverage solutions, including base station antenna scheme at both ends of the bridge, additional base station scheme at the island, bridge leaky cable reinforcing scheme and bridge antenna reinforcement scheme, and analyzes the advantages and disadvantages of each scheme from such aspects as the effect of network coverage, operation and maintenance difficulty and investment size, finally, it proposes the construction scheme of Gehu bridge of Nanyanjiang intercity railway, which can be used as a reference for wireless coverage of GSM-R system across the long water surface of high-speed railway in the future.
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5G Network Construction & Planning Based on High-speed Railway Environment
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He Li
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2022 Vol. 19 (11):
42-46.
DOI:10.3969/j.issn.1673-4440.2022.11.009
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Abstract (
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According to the requirements of high-speed railway radio communication network construction, this paper analyzes the 5G networking architecture and the wireless channel parameters under the high-speed railway environment, classifies the high-speed railway environment and constructs the channel model according to their channel characteristics, studies the parameters and problems of 5G network deployment under the high-speed railway environment, and improves the channel capacity through reasonable construction and planning of 5G network under the high-speed railway environment, and improves the user experience by increasing the speed of information transmission.
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Data Annotation System for Image Segmentation
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Zhang Yue, Wang Xiaoyi, Li Juan
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2022 Vol. 19 (11):
47-53.
DOI:10.3969/j.issn.1673-4440.2022.11.010
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The semantic segmentation data used in training model of image segmentation algorithm can only be used after annotation. At present, the open source data annotation tools related to semantic segmentation only support the annotation of object contour by marking polygons by tracing points, which has the disadvantages of many operations and low annotation efficiency. In order to solve the problems, this paper proposes the mouse fast annotation method and the whole copy/adjust annotation polygon method, which are applied to the data annotation system. The experimental results show that the annotation efficiency can be improved by 11.6% and 29.7% respectively by using the mouse fast annotation method and the whole copy/adjust annotation polygon method. Using this data annotation system for image segmentation can effectively improve the annotation efficiency of the annotator and have a positive effect on the acquisition of a large number of high quality annotation data.
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Analysis of Development Status of Earth Observation Satellites
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Xin Sheng, Yang Chao, Zhang Yue, Liu Qi
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2022 Vol. 19 (11):
54-58.
DOI:10.3969/j.issn.1673-4440.2022.11.011
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Abstract (
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Earth observation through satellites is not only for scientific understanding of the stars but also for the overall utilization of various resources. With the rapid development of geo survey technology in recent years, the main body of satellite investment and construction has changed. Based on the investigation of earth observation satellites of international space technology powers, this paper concludes that the development trend of space science and technology in the world is basically from the dominance of various countries to the joint advancement of governments and enterprises. The of space-earth coordination, intelligence and popularization have become the new trend of critical technology breakthrough.
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Application of Signaling System Interoperability Technology for Urban Rail Transit
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Cao Qibin
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2022 Vol. 19 (11):
59-64,88.
DOI:10.3969/j.issn.1673-4440.2022.11.012
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The interoperability technology and cross-line operation of urban rail transit have become the important development direction in the new stage. Combined with the design scenarios of the interoperability and cross-line operation of Beijing Metro Line 3 and Line 12 on the basis of different signaling system integrators, this paper discusses the main changes of signaling system equipment and functions, technical application and relevant problems in operation and usage. It provides key technical support for future urban rail transit interoperability, flexible cross-line operation, vehicle and equipment system sharing and integration, resource integration and utilization
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Research on Optimization of ATO Brake Application of EMU for Dongguan-Huizhou Intercity
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Yuan Shuiping
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2022 Vol. 19 (11):
65-69.
DOI:10.3969/j.issn.1673-4440.2022.11.013
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CTCS2+ATO train control system is adopted in Dongguan-Huizhou intercity Railway. With the long-term passenger operation, the unreasonable brake application and large braking impact lead to frequent replacement of brake pads. The cost of brake pad replacement as an important factor affecting the economic benefits of Dongguan-Huizhou intercity operation has become increasingly prominent. In order to reduce the wear and replacement frequency of train brake pads, this paper proposes an optimization scheme of the brake application method for ATO scenario of Dongguan-Huizhou intercity. The scheme can ensure the stability of ATO brake application and improve the service life of brake pads.
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Analysis of LTE-M System Interference of Beijing Rail Transit Transfer Stations
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Pan Hao, Feng Lei
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2022 Vol. 19 (11):
70-75.
DOI:10.3969/j.issn.1673-4440.2022.11.014
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LTE-M vehicle-ground integrated communication system has been widely used in Beijing rail transit, and the problem of frequency interference is inevitable in transfer stations. In order to ensure the safety and reliability requirements of LTE-M system, this paper sorts out the typical type of transfer stations of Beijing Rail Transit new line project. The interference analysis and calculation of LTE-M system in the transfer station scenario are carried out, and the interference protective measures are summarized to reduce the train operation safety hazards, so as to provide reference for the frequency interference protection of LTE-M system in transfer stations.
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Passenger Service System Based on Intelligent Customer Service for Urban Rail Transit
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Fu Baoming, Liang Jun, Zhang Ning, Wang Binbin, Chen Ying
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2022 Vol. 19 (11):
76-81.
DOI:10.3969/j.issn.1673-4440.2022.11.015
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This paper analyzes the management methods, staffing and responsibility allocation of the current operation department in passenger service and the challenges and opportunities faced by operators in passenger service under the intelligent customer service mode, discusses the new roles and responsibilities of operators, builds a passenger service system under the scenario of intelligent customer service based on the role update results of operators, so as to match the passenger service management system with the on-site intelligent business scenario. Combined with the actual construction of Suzhou rail transit intelligent customer service system, this paper analyzes the job responsibilities of relevant personnel and quantitatively analyzes the post setting of relevant personnel.
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Research on Intelligent Control Model of AFC Terminal Equipment for Urban Rail Transit
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Wang Zhaohua, Zhang Li, Zhou Linzhen, Zhang Xiaoxi, Shi Nan
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2022 Vol. 19 (11):
82-88.
DOI:10.3969/j.issn.1673-4440.2022.11.016
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This paper built up the intelligent control model of AFC devices to make the operating plans of station AFC devices on the base of the analysis of passenger flow demands of different types of dates and different time periods of the stations. The number of AFC devices of the operating plan will be adjusted according to the passenger flow demands during the execution of the operating plan, so as to realize the intelligent control of station AFC devices to improve the efficiency and save the energy costs of station AFC devices.
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Impact of 5G Antenna Layout on MIMO Performance in Subway Tunnel
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Zhou Yifeng
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2022 Vol. 19 (11):
89-92.
DOI:10.3969/j.issn.1673-4440.2022.11.017
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In order to promote the application of 5G communication system Massive MIMO technology in subway, this paper uses ray tracking to predict the impact of different array layouts on the performance of Massive MIMO systems in tunnel scenarios. The ray tracking method is calibrated, the relevant parameters in the tunnel scenarios are determined, and the system capacity, path loss and mean square root delay under the layout of various antenna arrays in MIMO system are analyzed through the ray tracking simulation of 160 M bandwidth centered on 5.6 GHz, which is of reference to the antenna and base station design in 5G communication system.
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Typical Case Analysis of Railway TDCS/CTC Circuit Reverse
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Tang Aijun
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2022 Vol. 19 (11):
105-109.
DOI:10.3969/j.issn.1673-4440.2022.11.021
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Railway TDCS/CTC system is an important business system that directly serves the railway transportation. TDCS/CTC system networking circuits is the important channels carried by the railway transmission network. In the process of maintaining the TDCS/CTC service circuit carried by the transmission network, it is an important work to optimize the circuit switching according to the current situation of transmission resources. This paper analyzes the typical cases of TDCS terminal monitoring failure caused by the switching of TDCS circuits, discusses the hidden security problems that exist in the process of circuit optimization. The communication and signal construction personnel jointly conducts the service verification before and during the switching, and the signal construction personnel specifies the route pointing of router, so as to avoid selecting the circuit section to be switched, to ensure the normal switching of TDCS terminals, safe and stable operation of TDCS system, and to achieve the goal of service transportation.
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Train Control Regulation Risk and Prevention Suggestions Based on 5M1E Analysis Method
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Meng Lin, Li Huaijun, Zhao Hongxia
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2022 Vol. 19 (11):
110-114.
DOI:10.3969/j.issn.1673-4440.2022.11.022
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in order to improve the safety of train control system, it is necessary to renovate the train control system. As the train control system renovation involves many contents, this paper mainly focuses on the causes and measures of train control system renovation. studies and judges. The possible risk factors in the process of railway renovation are studied, and the 5M1E analysis method is used to put forward targeted preventive suggestions for the risk factors, so as to provide help for the safety and smooth construction of the renovation process.
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Optimization Design of DC Power Module in Railway Signal Power System
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Wu Qingfeng
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2022 Vol. 19 (11):
115-120.
DOI:10.3969/j.issn.1673-4440.2022.11.023
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In order to improve the system efficiency and power density of railway signal power supply system, the DC switching power modules used in the power system are analyzed, and optimization scheme is proposed for the typical topology circuit. The wide bandgap semiconductor device is used in the circuit. The first stage uses the PFC bridgeless circuit to realize the power factor correction function, and the second stage uses the interleaving LLC resonant soft-switching topology circuit to realize the isolation transformation of different DC voltages. The optimization scheme can effectively improve the efficiency and power density of the DC switching power module, and improve the reliability of power module.
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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
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