A system for converting the gauge of a city rail transit and a city regional railway

Abstract

The application discloses a system for converting modes suitable for cross-line operation of urban rail transit and regional railway, which is connected with the safety network of CTCS-2 and the ATC network of CBTC by adding a conversion control unit, and meets the independent requirements of the safety network of CTCS-2 and the ATC network of CBTC. Meanwhile, the system reduces the changes of CBTC system equipment, and can support bidirectional mode conversion from CTCS-2 mode to CBTC mode and from CBTC mode to CTCS-2 mode, so that the interconnection of urban rail transit and regional railway is realized without affecting the operation efficiency.

Description

Technical Field

[0001] This invention relates to the field of rail transit technology, and in particular to a system for switching between urban rail transit and suburban railway lines. Background Technology

[0002] With the continuous development and improvement of urban rail transit and the gradual formation of the national trunk high-speed railway network, suburban railways, which are located at the junction of urban rail transit and trunk railways, have ushered in a new wave of development. Suburban railways primarily serve the daily travel needs of urban residents, so many cities have introduced them into their city centers. Within the city, urban rail transit needs to connect with suburban railways to enable interconnection and convenient transfers.

[0003] Signaling systems are crucial for ensuring the safe and efficient operation of rail transit lines, and are also key systems supporting the interconnection between urban rail transit lines and suburban railway lines. According to the mainstream signaling systems currently in use, they can be divided into urban rail CBTC systems and the China State Railway CTCS-2 system. The technical standards for CBTC signaling systems are led by the China Urban Rail Transit Association, with local urban rail transit groups responsible for operation and maintenance. The technical standards, construction, operation, and management of the CTCS-2 signaling system are led by China State Railway Group Co., Ltd.

[0004] Due to significant differences between the CBTC signaling system and the CTCS-2 signaling system in terms of operational characteristics, system equipment composition, and internal and external system interfaces, under the general trend of four-network convergence, a crucial research direction has been how to achieve interconnection and interoperability between the urban rail CBTC system and the national railway CTCS-2 system, enabling cross-line operation of trains without downgrading. However, no mature technical solution has yet been found.

[0005] In view of this, the present invention is hereby proposed. Summary of the Invention

[0006] The purpose of this invention is to provide a system for switching between urban rail transit and suburban railways, which can achieve interconnection between urban rail transit and suburban railways without affecting operational efficiency.

[0007] The objective of this invention is achieved through the following technical solution:

[0008] A system for switching between urban rail transit and suburban railway lines, comprising:

[0009] The ground equipment of the CBTC line connecting station is connected to the ground equipment of the CTCS-2 line connecting station; among them, a conversion control unit is added to the ground equipment of the CBTC line connecting station. The conversion control unit has two sets of communication interfaces. One set of communication interfaces is connected to the safety net in the ground equipment of the CTCS-2 line connecting station, and the other set is connected to the ATC network in the ground equipment of the CBTC line connecting station.

[0010] The conversion control unit calculates the train operation permit for cross-line trains and interacts with the regional control center in the ground equipment of the CBTC line connecting station to realize the mutual conversion between CTCS-2 system and CBTC system for cross-line trains; wherein, CTCS-2 system is the system used in CTCS-2 line, and CBTC system is the system used in CBTC line.

[0011] As can be seen from the technical solution provided by the present invention, by adding a conversion control unit, which is connected to the CTCS-2 safety network and the CBTC ATC network respectively, the independent requirements of the CTCS-2 safety network and the CBTC ATC network are met; at the same time, the modification of CBTC system equipment is reduced, and bidirectional system conversion from CTCS-2 to CBTC and from CBTC to CTCS-2 is supported, realizing the interconnection between urban rail transit and suburban railways without affecting operational efficiency. Attached Figure Description

[0012] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 A schematic diagram of a system conversion system for cross-line operation of urban rail transit and suburban railway provided in an embodiment of the present invention;

[0014] Figure 2 This is a schematic diagram of the interface between the conversion control unit and the ground equipment provided in an embodiment of the present invention;

[0015] Figure 3 This is a schematic diagram illustrating the conversion from CTCS-2 to CBTC standard provided in an embodiment of the present invention.

[0016] Figure 4 This is a schematic diagram illustrating the conversion from CBTC to CTCS-2 format as provided in an embodiment of the present invention. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0018] First, the following explanations are provided for the terms that may be used in this article:

[0019] The terms “including,” “comprising,” “containing,” “having,” or other similar semantic descriptions should be interpreted as non-exclusive inclusion. For example, “including a technical feature element (such as raw material, component, ingredient, carrier, dosage form, material, size, part, component, mechanism, device, step, process, method, reaction conditions, processing conditions, parameter, algorithm, signal, data, product or article of manufacture, etc.)” should be interpreted as including not only the expressly listed technical feature element, but also other technical feature elements that are not expressly listed and are well-known in the art.

[0020] Unless otherwise explicitly specified or limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this document according to the specific circumstances.

[0021] The following is a detailed description of a system conversion system for cross-line operation of urban rail transit and suburban railways provided by the present invention. Contents not described in detail in the embodiments of the present invention are prior art known to those skilled in the art. Where specific conditions are not specified in the embodiments of the present invention, conventional conditions in the art or conditions recommended by the manufacturer shall apply. Where the manufacturers of the instruments used in the embodiments of the present invention are not specified, they are all conventional products that can be purchased commercially.

[0022] like Figure 1The diagram illustrates a system conversion system for cross-line operation of urban rail transit and suburban railways, provided by an embodiment of the present invention. The system mainly includes: ground equipment at a CBTC line connecting station and ground equipment at a CTCS-2 line connecting station. A conversion control unit (TCU) is added to the ground equipment at the CBTC line connecting station. The TCU has two sets of communication interfaces: one connected to the safety network in the ground equipment at the CTCS-2 line connecting station, and the other connected to the ATC network in the ground equipment at the CBTC line connecting station. The TCU calculates train operation permits for cross-line trains and interacts with the regional control center in the ground equipment at the CBTC line connecting station to achieve mutual conversion between the CTCS-2 and CBTC systems for cross-line trains. The CTCS-2 system is the system used on the CTCS-2 line, and the CBTC system is the system used on the CBTC line.

[0023] The above-mentioned solutions provided by the embodiments of the present invention mainly bring the following beneficial effects:

[0024] (1) It avoids changes in CTCS system equipment and uses the CTCS standard interface to adapt the interface of the new equipment (i.e., the conversion control unit).

[0025] (2) Reduced the need for modifications to CBTC system equipment.

[0026] (3) It can support bidirectional conversion between CTCS-2 and CBTC standards.

[0027] (4) Without affecting operational efficiency, the interconnection between urban rail transit and suburban railway has been achieved.

[0028] To more clearly demonstrate the technical solution and its effects provided by the present invention, the system provided by the embodiments of the present invention will be described in detail below with reference to specific examples.

[0029] I. General Overview.

[0030] To enable continuous cross-line train operation, a system conversion system suitable for cross-line operation of urban rail transit and suburban railways was successfully developed based on independent research and development. The problems to be solved in developing this system included:

[0031] (1) Realize bidirectional system conversion between CBTC and CTCS-2 systems for trains.

[0032] (2) Under the premise of meeting the CTCS standard, trains can achieve through operation in the transfer area.

[0033] (3) Provide the necessary information for the CBTC ground system and on-board system to ensure that the train can operate normally in the conversion area without degradation and realize the system conversion.

[0034] (4) The conversion control unit provides two sets of redundant communication interfaces, which are connected to the CTCS-2 security network and the CBTC ATC network respectively, so that the CTCS-2 security network and the CBTC ATC network can be independent.

[0035] (5) Provide temporary speed limit protection for CBTC cross-line trains operating in the switching area.

[0036] (6) Provide the CTC with information on CBTC trains operating in the switching area, so that the CTC can display CBTC trains operating across lines.

[0037] II. Overall Structure.

[0038] To achieve through operation between CBTC and CTCS-2 lines, a transfer control unit (TCU) will be added to the CBTC connecting stations, based on the existing ground equipment of CBTC and CTCS-2. Specifically, as follows... Figure 1 As shown, the ground equipment at the CBTC line connecting stations is configured according to the CBTC line requirements, mainly including the Zone Control Center (ZC), CBTC interlocking, ATS (Automatic Train Monitoring System) station equipment and LTE (Long Term Evolution) equipment, with an additional set of Switching Control Unit (TCU) equipment; the ground equipment at the CTCS-2 line connecting stations is configured according to the CTCS-2 line requirements, mainly including the Train Control Center, CTCS interlocking, CTC station equipment, Temporary Speed ​​Limit Server, Dispatch Center (CTC), indoor track circuit equipment and LEU (Land Electronic Unit) equipment, etc., with modifications or expansions to related equipment that interfaces with the CBTC equipment (TCU).

[0039] The switching control unit is an ATP (Automatic Train Protection) device on the ground of the CBTC system. It provides two sets of communication interfaces, which are connected to the CTCS-2 safety network and the CBTC ATC network respectively, to meet the independent requirements of the CTCS-2 safety network and the CBTC ATC network. It can calculate movement authorization for cross-line CBTC trains and exchange information with the connecting CBTC station ZC to realize the handover of control of cross-line trains.

[0040] III. System Interface Scheme.

[0041] In this embodiment of the invention, the switching control unit has the function of interfaceing with the CTC system, TSRS (Temporary Speed ​​Limit Server) system, and CTCS interlocking system in the ground equipment of the station connecting to the CTCS-2 line, and also has the function of interfaceing with the area control center and CBTC onboard system in the ground equipment of the station connecting to the CBTC line. Therefore, based on the existing CTCS-2 and CBTC interface specifications, interfaces are added between the switching control unit and the area control center (ZC), the switching control unit and the CTCS interlocking system (CTCS-CBI), the switching control unit and the TSRS system, and the switching control unit and the CTC system, specifically as follows: Figure 2 As shown.

[0042] Information interaction is achieved based on the functions of the corresponding interfaces. The conversion control unit calculates the train operation permission for cross-line trains based on the information obtained from the interaction, provides CBTC train information to the CTC system, enables the CTC system to display CBTC trains, and interacts with the regional control center to realize the handover of train control and complete the mutual conversion between CTCS-2 and CBTC systems.

[0043] The information exchanged in the system interface scheme described above mainly includes the following:

[0044] (1) The switching control unit and the CTCS interlocking system exchange information via an Ethernet interface, including: station track circuit information, section block direction information, section block section information, station train route information, disaster area information, turnout status information and station train signal status information.

[0045] (2) The conversion control unit and the TSRS system communicate via Ethernet. The information exchanged includes: TSR refresh request, non-archived TSR verification command, archived TSR verification command, non-archived TSR execution command, archived TSR execution command, line speed limit status initial confirmation command, TSRS life signal, non-archived TSR status, archived TSR status, non-archived TSR error receipt and archived TSR error receipt.

[0046] (3) The conversion control unit and the CTC system communicate via Ethernet. The information exchanged includes: clock information, emergency stop command, feedback information and train information.

[0047] (4) The switching control unit and the regional control center communicate via Ethernet. The information exchanged includes: general information packets, turnout status information, physical section status information, handover status information, handover train information, station information delay packets, and track section train sequencing information.

[0048] (5) The conversion control unit and the CBTC on-board equipment interface through LTE-M. The information exchanged includes: general information packet, train location information, application layer registration request, application layer deregistration request, VOBC fully automatic operation interaction information, train control information, application layer registration response, application layer deregistration response, ZC active deregistration request, special control message and fully automatic operation interaction information.

[0049] IV. System Operation Plan.

[0050] In this embodiment of the invention, the conversion between CTCS-2 and CBTC systems for cross-line trains includes: conversion from CTCS-2 to CBTC, and conversion from CBTC to CTCS-2. The interactive information described above is exchanged in real time throughout the entire conversion process, without distinguishing between specific steps. The relevant conversion schemes are described below.

[0051] 1. Convert CTCS-2 format to CBTC format.

[0052] like Figure 3 The diagram shown illustrates the conversion from CTCS-2 to CBTC standard. The main process is as follows:

[0053] (1) Cross-line trains enter the station and stop according to the CTCS train operation permission provided by the track circuit and the station positioning transponder control.

[0054] (2) When a cross-line train enters the station, the CBTC on-board equipment establishes its position and direction and establishes a communication link with the conversion control unit, and exchanges information with the conversion control unit (i.e., sends the train position information to the conversion control unit). The conversion control unit selects the train based on the information obtained from the interaction with the CBTC on-board equipment.

[0055] (3) After the train screening is completed, the conversion control unit calculates the CBTC entry permit for the cross-line train based on the information obtained from the CTCS interlocking system. The cross-line train enters the station based on the CBTC entry permit and completes the CTC mode upgrade at the platform.

[0056] (4) The conversion control unit interacts with the regional control center to jointly calculate the CBTC train operation permission for cross-line trains to be transferred to the CBTC line.

[0057] (5) The cross-line train, based on the CBTC driving permission transferred to the CBTC line, travels to the CBTC line and completes the conversion from CTCS-2 system to CBTC system.

[0058] 2. Convert from CBTC format to CTCS-2 format.

[0059] like Figure 4 The diagram shown illustrates the conversion from CBTC to CTCS-2. The main process is as follows:

[0060] (1) The conversion control unit establishes communication with the CBTC on-board system and determines the train position information of the cross-line train that needs to be converted through the information obtained by interaction.

[0061] (2) The CTC handles the station entry route for cross-line trains according to the operation plan and interacts with the conversion control unit through the CTCS interlocking system and the TSRS system.

[0062] (3) The conversion control unit calculates the CBTC train operation permission for cross-line trains that are about to enter the system conversion area (i.e., from the CBTC line to the system conversion area) based on the information obtained by the interaction between the CTCS interlocking system and the TSRS system. The cross-line trains enter the system conversion area based on the CBTC train operation permission.

[0063] (4) The conversion control unit interacts with the regional control center to jointly calculate the cross-regional CBTC driving permission for cross-line trains undergoing system conversion.

[0064] (5) Cross-line trains enter the system conversion area platform to stop according to the cross-regional CBTC train operation permission sent by the conversion control unit; wherein, the system conversion area refers to the area where the train begins to convert the system, and the system conversion area covers the CTCS-2 line connecting stations and sections.

[0065] (6) Cross-line trains communicate with the CTCS line-related systems (CSS and TCU) to complete the conversion from CBTC to CTCS-2.

[0066] 3. Temporary speed limit.

[0067] Within the system switching area, the temporary speed limit under the CTCS system is sent from the TSRS system to the switching control unit, which then sends the temporary speed limit to the CBTC on-board equipment via CBTC driving permission.

[0068] Temporary speed limits under CTCS and CBTC standards follow the regulations of their respective standards, while the conversion control unit follows the temporary speed limit regulations under CTCS standards.

[0069] The above-mentioned solution provided by the embodiments of the present invention, under the premise of ensuring system operation efficiency and meeting CTCS relevant standards, completes the conversion of trains from CTCS signal system to CBTC signal system or from CBTC signal system to CTCS signal system by adding and modifying CBTC equipment, so as to achieve cross-line operation of trains between urban rail transit and suburban railways.

[0070] Through the above description of the embodiments, those skilled in the art can clearly understand that the above embodiments can be implemented by software, or by using software plus necessary general-purpose hardware platforms. Based on this understanding, the technical solutions of the above embodiments can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (such as a CD-ROM, USB flash drive, external hard drive, etc.), including several instructions to cause a computer device (such as a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments of the present invention.

[0071] Those skilled in the art will understand that, for the sake of convenience and brevity, the above-described division of functional modules is used as an example. In practical applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the system can be divided into different functional modules to complete all or part of the functions described above.

[0072] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A system for switching between urban rail transit and suburban railway lines, characterized in that, include: The ground equipment of the CBTC line connecting station is connected to the ground equipment of the CTCS-2 line connecting station; among them, a conversion control unit is added to the ground equipment of the CBTC line connecting station. The conversion control unit has two sets of communication interfaces. One set of communication interfaces is connected to the safety net in the ground equipment of the CTCS-2 line connecting station, and the other set is connected to the ATC network in the ground equipment of the CBTC line connecting station. The conversion control unit calculates the train operation permit for cross-line trains and interacts with the regional control center in the ground equipment of the CBTC line connecting station to realize the mutual conversion between CTCS-2 system and CBTC system for cross-line trains; wherein, CTCS-2 system is the system used in CTCS-2 line, and CBTC system is the system used in CBTC line. The conversion control unit has the function of interfaceing with the CTC system, TSRS system and CTCS interlocking system in the ground equipment of the station connecting to the CTCS-2 line, and has the function of interfaceing with the area control center and CBTC on-board system in the ground equipment of the station connecting to the CBTC line. The TSRS system is a temporary speed limit server system. Information interaction is achieved based on the functions of the corresponding interfaces. The conversion control unit calculates the train operation permission for cross-line trains based on the information obtained from the interaction, provides CBTC train information to the CTC system, enables the CTC system to display CBTC trains, and interacts with the regional control center to realize the handover of train control and complete the mutual conversion between CTCS-2 and CBTC systems.

2. The system for switching between urban rail transit and suburban railway lines according to claim 1, characterized in that, The conversion control unit has the function of interfacing with the CTC system, TSRS system and CTCS interlocking system in the ground equipment of the station connecting to the CTCS-2 line, and realizes information interaction based on the functions of the corresponding interfaces, including: The switching control unit and the CTCS interlocking system communicate via an Ethernet interface, and the information exchanged includes: station track circuit information, section block direction information, section block section information, station train route information, disaster area information, turnout status information, and station train signal status information. The conversion control unit interfaces with the TSRS system via Ethernet, and the information exchanged includes: TSR refresh request, non-archived TSR verification command, archived TSR verification command, non-archived TSR execution command, archived TSR execution command, line speed limit status initial confirmation command, TSRS life signal, non-archived TSR status, archived TSR status, non-archived TSR error receipt and archived TSR error receipt. The switching control unit interfaces with the CTC system via Ethernet, and the information exchanged includes: clock information, emergency stop commands, feedback information, and train information.

3. The system for switching between urban rail transit and suburban railway lines according to claim 1, characterized in that, The conversion control unit has the function of interfacing with the area control center and CBTC onboard system in the ground equipment of the CBTC line connection station, and realizes information interaction based on the functions of the corresponding interface, including: The switching control unit interfaces with the regional control center via Ethernet, and the information exchanged includes: general information packets, turnout status information, physical section status information, handover status information, handover train information, station information delay packets, and track section train sequencing information; The conversion control unit interfaces with the CBTC onboard equipment via LTE-M, and the information exchanged includes: general information packets, train location information, application layer registration / deregistration requests, VOBC fully automatic operation interaction information, train control information, application layer registration / deregistration responses, ZC active deregistration requests, special control messages, and fully automatic operation interaction information.

4. A system for switching between urban rail transit and suburban railway lines as described in claim 1, characterized in that, The process of converting cross-line operating trains between CTCS-2 and CBTC systems includes: converting cross-line operating trains from CTCS-2 to CBTC systems, and the conversion process includes: Cross-line trains enter the station and stop according to the CTCS train operation permission provided by the track circuit and the station positioning transponder control. During the process of cross-line trains entering the station, the CBTC on-board equipment establishes the position and direction and establishes a communication link with the conversion control unit, and exchanges information with the conversion control unit. The conversion control unit selects trains based on the information obtained from the interaction with the CBTC on-board equipment. After the train screening is completed, the conversion control unit calculates the CBTC entry permit for the cross-line train based on the information obtained from the CTCS interlocking system. The cross-line train enters the station based on the CBTC entry permit and completes the CTC mode upgrade on the platform. The conversion control unit interacts with the regional control center to jointly calculate the CBTC train operation permission for cross-line trains to be transferred to the CBTC line. According to the CBTC operating permit transferred to the CBTC line, the cross-line train travels to the CBTC line and completes the conversion from CTCS-2 system to CBTC system.

5. A system for switching between urban rail transit and suburban railway lines as described in claim 1, characterized in that, The process of converting cross-line trains between CTCS-2 and CBTC systems includes: converting cross-line trains from CBTC to CTCS-2 systems, and the conversion process includes: The conversion control unit establishes communication with the CBTC on-board system and determines the train position information of cross-line trains that need to undergo system conversion through the information obtained through interaction. According to the operation plan, the CTC handles the station entry routes for cross-line trains and exchanges information with the conversion control unit through the CTCS interlocking system and the TSRS system; The conversion control unit calculates the CBTC train operation permission for cross-line trains about to enter the conversion area based on information obtained from the interaction of the CTCS interlocking system and the TSRS system. The cross-line trains enter the conversion area based on the CBTC train operation permission. The conversion control unit interacts with the regional control center to jointly calculate cross-regional CBTC driving permits for cross-line trains undergoing system conversion. Cross-line trains enter the system conversion area platform to stop according to the cross-regional CBTC train operation permission sent by the conversion control unit; wherein, the system conversion area covers the CTCS-2 line connecting stations and sections; Cross-line trains communicate with the CTCS line-related systems to complete the conversion from CBTC to CTCS-2.

6. A system for switching between urban rail transit and suburban railway lines as described in claim 5, characterized in that, Within the system switching area, the temporary speed limit under the CTCS system is sent from the TSRS system to the switching control unit, and then the switching control unit sends the temporary speed limit to the CBTC on-board equipment through the CBTC driving permission. Temporary speed limits under CTCS and CBTC standards follow the regulations of their respective standards, while the conversion control unit follows the temporary speed limit regulations under CTCS standards.

7. A system for switching between urban rail transit and suburban railway lines as described in claim 1, characterized in that, The switching control unit interfaces with the CTCS interlocking system, the TSRS system, the CTC system, and the regional control center via Ethernet. The switching control unit interfaces with the CBTC on-board equipment via LTE-M.

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