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Calculation Principle of Train Position and Direction Based on the Last Relevant Balise Group
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Zhang Youbing, Wang Jianmin, Yu Xiaona, Zhang Zhenxing, Wang Huaijiang
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2022 Vol. 19 (3):
6-11.
DOI:10.3969/j.issn.1673-4440.2022.03.002
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Abstract (
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In CTCS-3 and ETCS-2, on-board equipment determines the train position and running direction based on the last relevant balise group, and reports the train position to Radio Block Center (RBC). RBC sends train control information such as movement authority to the train according to the train position, so as to jointly ensure the safe and efficient operation of the high-speed trains. This paper introduces the basic concept, basic principle and method of calculating train position and direction based on the last relevant balise group, expounds the basic concepts of location and direction in the on-board equipment location report, analyzes the state transition relation of train position and direction in different scenarios, and analyzes and introduces the general calculation method of train position and direction.
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Design of SBP Safety Bus Applicable for CTCS-3 Safety Computer Platform
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Yan Gan, Qi Chunchen
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2022 Vol. 19 (3):
12-16.
DOI:10.3969/j.issn.1673-4440.2022.03.003
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Abstract (
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In order to solve the problem of unsafe internal communication bus of CTCS-3 safety computer platform, this paper designs a kind of bus that can meet the security network requirements in EN 50159. The bus has hardware structure of dual two out of two to group and package application layer data, add CRC encoding and validation to application layer data, and detect a number of communication functions and security assurance functions such as the full-duplex data communication between the master and the slave of point-to-point link connection status. The bus can solve the problem of internal security communication of onboard platform and have great significance to the research of safety computer onboard platform.
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Satellite Positioning Method in Combination with Speed and Distance Measurement
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Liu Tianqi, Zhang Hao, Jiao Ming
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2022 Vol. 19 (3):
17-20,43.
DOI:10.3969/j.issn.1673-4440.2022.03.004
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Abstract (
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According to the development trend of the next-generation train operation control system, the Qinghai-Tibet Railway train control system replaces a large number of balise deployed in the section by adopting a real-time train positioning solution based on satellite positioning system. The deployment of this system can reduce the deployment and operation costs of Qinghai-Tibet Railway. At the same time, service of real-time accurate positioning of trains can be provided. This paper analyzes the satellite positioning scheme, and proposes the combination of the on-board speed and distance measurement information when the satellite positioning system is used for continuous train positioning. In this way, the problem of positioning the train at the wrong track can be avoided when the train passes through the switch.
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Implementation of Automatic Compilation Products for Signal Equipment
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Liu Liu
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2022 Vol. 19 (3):
21-26.
DOI:10.3969/j.issn.1673-4440.2022.03.005
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Abstract (
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This paper designs an automatic compilation platform of ground control equipment software (hereinafter referred to as GCP), which adopts B/S architecture, SpringMVC server-side framework and JqGrid visual interface to complete the data interaction between the client and the platform server-side server, the server-side server and the product library server, and the compiler servers, and designs and divides into the modules to the system by structured and object-oriented methods. In the subsequent application of software, automated compilation operation can greatly reduce manual intervention, improve the efficiency and correctness of compilation, and ensure the smooth integration and R&D process of all products.
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Performance Detection Methods of Cable D for 300T Onboard Equipment
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Luo Yunfei, Yi Sheng, Qi Xiaonan, Qi He
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2022 Vol. 19 (3):
27-32.
DOI:10.3969/j.issn.1673-4440.2022.03.006
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Abstract (
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The fault of cable D for 300T train control onboard equipment can only be determined by ways such as replacing BTM or CAU, and there are no direct detection methods for the cable at present. By measuring the AC and DC electrical parameters of cable D can identify cable faults or aging conditions; and by measuring the distributed transmission performance of cables can reflect the line matching and reflection size and other indicators, and can locate the fault. Combined with the above two methods to test cable D, and the test results are presented by the distribution curve of characteristic impedance, which can effectively identify the open circuit, short circuit, performance degradation and other problems of the cable, and improve the efficiency of fault handling treatment.
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Analysis of Architecture and Implementation of Integrated Travel Service Platform
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Ma Lan, Yan Xiang, Wang Peng, Wang Jinpeng
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2022 Vol. 19 (3):
33-38.
DOI:10.3969/j.issn.1673-4440.2022.03.007
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Abstract (
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This paper introduces the concept of integrated travel service, analyzes the design objectives of the integrated travel service platform, proposes the design elements and overall architecture of the platform based on the design objectives, and introduces the implementation scheme of the platform from four layers: perception layer, network layer, platform layer and application layer, which provides a good reference for the construction of the whole chain integrated travel service system and is conductive to promote the development of urban traffic circle and the formation of new ecology for integrated transportation.
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Design of Repeater Power Supply Monitoring System
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Ni Xiaolong
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2022 Vol. 19 (3):
39-43.
DOI:10.3969/j.issn.1673-4440.2022.03.008
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Abstract (
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A repeater power supply monitoring system is designed to monitor the power quality of various power supplies. The system adopts embedded processor LPC1768 as the control core, monitors the quality of AC / DC power supply in real time through high reliability isolation ADC circuit, and at the same time it can support multiple interface channels to upload the power supply waveform data to the network management platform. After data analysis on the network management platform, the system can monitor the power supply status of the repeater equipment in real time and give warning of the influence of power supply quality on repeater system in advance, and take corresponding preventive measures to ensure the stable operation of railway and the safety operation of trains.
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Application of IoT Technology in Intelligent Railway Passenger Station
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Zhao Yao, Feng Jingran, Zhou Min
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2022 Vol. 19 (3):
44-49.
DOI:10.3969/j.issn.1673-4440.2022.03.009
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Abstract (
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This paper makes research on the IoT technology. By combing the current situation and shortcomings of the intelligent system of railway passenger station, the paper proposes the scheme of the application of IoT technology at the intelligent railway passenger station to improve the monitoring function and scope, establish the unified data sharing platform and develop intelligent applications. The application scheme contributes to optimize passenger service level, emergency response capacity, operation and maintenance management capacity of the station and realize the green station purpose, which conforms to the development direction of IoT technology and intelligent high-speed railway.
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Construction of Intelligent Security Check System for Railway Passenger Station
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Qi Fei
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2022 Vol. 19 (3):
50-53.
DOI:10.3969/j.issn.1673-4440.2022.03.010
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Abstract (
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The existing security check methods of railway passenger station have low efficiency and low accuracy, which cannot meet the requirements of the existing security check work. The on-site practical problems such as security leakage check, error check and channel congestion of railway passenger station need to be solved urgently. According to the characteristics of current railway new line construction and the existing equipment upgrading, this paper makes the research and analysis through several aspects such as advantages, main features, main structures and main equipment composition of intelligent security check system, and proposes the suggestion and advice on the methods of the construction of intelligent security check system for railway passenger station.
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Application of Speech Interactive Technology in Urban Rail Transit
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Liang Jun, Fu Baoming, Wang Yongxing, Wang Shuai, Zhang Tao
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2022 Vol. 19 (3):
54-58.
DOI:10.3969/j.issn.1673-4440.2022.03.011
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This paper introduces the passenger information interaction needs of urban rail transit and the shortcomings of the traditional information interaction mode; the speech interactive technology is briefly introduced, and its application scenario in urban rail passenger information interaction service is analyzed, and its integration scheme and implementation path with traditional urban rail service are discussed in detail at the levels of system function, business architecture and urban rail knowledge base. Speech interactive technology is of great significance to improve the intelligent service level of rail transit. Its application practice in Suzhou rail transit has a certain reference value for the development of the industry.
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Study on Coordinated Mode and Multi-discipline Coordinated Scheme for Urban Rapid and Urban Traditional Rail Transits
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Liu Jun, Wang Meng, Zhou Canwei, Zhang Jie, Li Qing
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2022 Vol. 19 (3):
59-64.
DOI:10.3969/j.issn.1673-4440.2022.03.012
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Abstract (
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To enhance the transportation capacity for the composite network consisting of urban rapid rail transit and urban traditional rail transit in Chongqing, three kinds of coordinated transportation modes, including the crossing operation between the same technology, connecting operation between different technologies, and transfer operation between different technologies are proposed according to the technology and standards of the rapid rail transit and traditional rail transit. The characteristics and feasibility of engineering implementation of each mode are analyzed. From the aspects of line, vehicle, traction and power supply, signaling, communication, integrated monitoring, AFC and electromechanical equipment, the multi-discipline coordinated guarantee scheme is designed for each mode. A case study on the coordinated operation between the inter-city rail Jiang-Tiao Line and Line 5 in Chongqing is conducted. It is obtained that Jiang-Tiao Line and Line 5 can adopt the connecting operation between different technologies, and their train routing schemes are designed accordingly. This paper can provide reference for other cities to carry out the research on the coordinated transportation of urban rapid rail transit and urban rail transit.
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Quality Acceptance Standard of Cloud Platform Project of Urban Rail Transit
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Ge Shuyun, Zhou Wei, Chen Panpan, Li Huijuan
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2022 Vol. 19 (3):
65-69.
DOI:10.3969/j.issn.1673-4440.2022.03.013
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In order to standardize the quality acceptance of urban rail transit cloud platform project and improve the project implementation system, this paper elaborates on the main content of quality acceptance standard of urban rail transit cloud platform project in accordance with network architecture and system deployment of urban rail cloud platform. As an independent unit project, the urban rail transit cloud platform includes sub-projects such as system pipelines, cloud platforms, system commissioning, power supply devices, lightning protection and grounding. The paper focuses on the contents of system commissioning such as cloud platform inspection, big data platform inspection and business system resource inspection, in order to guide the construction of urban rail cloud platform.
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Application of Double Network Integration at Smart Intersection of Trams in Shenfu New District
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Ma Yonggang, Ding Lin
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2022 Vol. 19 (3):
70-74.
DOI:10.3969/j.issn.1673-4440.2022.03.014
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Abstract (
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Based on the integrated control concept of modern trams and municipal roads, this paper introduces the "rail transit dual network integration signaling control system" formed by the combination of trams and municipal traffic operation network. The system adopts a new generation of lane detection technology and dual network integration safety signaling algorithm control technology, which effectively solves the problems of low efficiency and poor safety of trams passing through intersections. At the same time, the application of intelligent intersection dual network integration technology realizes the integration of ground traffic resources, thus improves the road operation efficiency.
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Interconnection Scheme of QR Code Ticket for Urban Rail Transit
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Fu Baoming, Zhang Ning, Wu Chao
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2022 Vol. 19 (3):
79-84.
DOI:10.3969/j.issn.1673-4440.2022.03.016
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Firstly, this paper introduces the internet ticketing system, QR code type, transaction process and other related information of QR code ticket; secondly, it introduces three existing QR code ticket interconnection technology schemes, and analyzes their advantages and disadvantages; finally, combined with the construction and operation of Suzhou Metro QR code ticket, the interconnection scheme evaluation index system is constructed considering the transformation cost, operation benefit, passenger experience, sustainability and other factors. Based on the analytic hierarchy process (AHP), the evaluation of each implementation scheme is carried out, and the optimal technical scheme in line with the situation of Suzhou is finally determined. This paper discusses the interconnection scheme of QR code ticket, which provides a reference for the practice of inter-city rail transit ticketing system interconnection, and has certain industry guiding significance.
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Analysis and Optimization Measures of Urban Rail Transit Turn-back Capacity
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Yang Chunni
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2022 Vol. 19 (3):
89-94.
DOI:10.3969/j.issn.1673-4440.2022.03.018
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Turn-back interval is the main factor that affects the capacity of the urban rail transportation. This paper analyzes the key points restricting the turn-back interval through turn-back operation item and operation time, and puts forward the optimization measure from the aspects such as signal system, vehicle performance parameters, equipment selection, stop time, etc. Focally from the point of optimizing the signaling system, the paper proposes a method to improve the turn-back capability by means of interlocking approach control principle, train speed model, ATO turn-back mode and train control algorithm.
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Application of EMC Design in Railway Signal Equipments
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Liu Shangfeng
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2022 Vol. 19 (3):
105-110.
DOI:10.3969/j.issn.1673-4440.2022.03.021
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Based on the theory of electromagnetic compatibility design, this paper discusses the electromagnetic compatibility design method of railway signal equipment from four aspects such as structure design, cable design, assembly design and grounding design, and puts forward the design improvement method based on actual test cases, so as to improve the electromagnetic compatibility performance of railway signal equipment.
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Design of Commissioning Load of Railway Signal Power Supply System Equipments
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Liu Jiye
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2022 Vol. 19 (3):
111-114,120.
DOI:10.3969/j.issn.1673-4440.2022.03.022
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Based on the railway industry standard and the design experience of the signal power supply in recent years, this paper summarizes and analyzes the types of the current standard power supply of the railway signal power supply output circuit, and designs a safety test platform which can meet the need of loading the power supply system equipments simultaneously during the production and commissioning of power supply system equipments at the current largest domestic station & yard by applying Ohm's law and the principle of series and parallel circuits, so as to strengthen the generality of commissioning load of power supply system equipments.
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Analysis of Ripple Small Signal Test Method
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Wang Tianyou
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2022 Vol. 19 (3):
115-120.
DOI:10.3969/j.issn.1673-4440.2022.03.023
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Abstract (
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During the tests of power module material and certain single-boards, oscilloscopes will be used to measure the ripple of power module, but the operators often find that the measured data is inconsistent with the manual data or the ripple waveform is difficult to be captured directly and quickly. This work consumes manpower and labor, and affects the accuracy and efficiency of the test due to improper operation or setting. If purchasing special ripple test instrument and equipment or special probe, the price will be very expensive. In view of the above problems, this paper analyzes the causes of power ripple formation and the operation principle of common probe used to test ripple signal, and proposes a new test technology for ripple small signal probe to meet the test requirements.
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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