Method for interconnection and intercommunication of TACS system and CBTC system cross-line operation

Abstract

The application discloses a TACS system and CBTC system interconnection and intercommunication cross-line operation method, when TACS trains cross-system run, interconnection and intercommunication CBTC train-ground communication protocols and ground equipment intercommunication protocols are adopted to realize function interaction, so that the trains can be seamlessly switched between TACS lines and CBTC lines without stopping, train operation efficiency is high, cross-line operation effectively improves train resource utilization and passenger travel experience; the existing interconnection and intercommunication CBTC interface protocols and interaction processes are not destructively modified, the existing equipment does not need to be modified, and resources are saved.

Description

Technical Field

[0001] This invention belongs to the field of rail transit technology, specifically relating to train control technology. Background Technology

[0002] The TACS system is a new type of communication-based train control system. It employs an architecture with onboard controllers as the main protection and control components and resource-based protection algorithms, featuring high availability, high flexibility, and high track resource utilization. It represents a new generation of train control systems. Meanwhile, existing lines are primarily built according to the traditional CBTC architecture. Therefore, when implementing network-based operation, the challenge of interconnecting and interoperating between the TACS system and CBTC across lines needs to be addressed. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a method for interconnecting and operating across lines between the TACS system and the CBTC system, so that trains equipped with TACS equipment can operate across lines between the lines equipped with CBTC ground equipment and TACS ground equipment respectively.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] A method for interconnecting and operating across lines using the TACS and CBTC systems, wherein when a TACS train travels from the TACS line to the CBTC line, the following steps are performed:

[0006] a) TACS trains travel from the TACS line toward the CBTC line and approach the CBTC line;

[0007] b) The CBTC line ATS automatically or manually handles cross-line train reception routes according to the timetable. After the route is successfully handled, the CBI transmits the train reception signal opening information to the OC of the TACS line.

[0008] c) The TACS line ATS automatically or manually sends a cross-line departure route command to the TACS-VOBC according to the timetable. The TACS-VOBC obtains the cross-line departure route resources and, after obtaining the information that the receiving signal is open from the OC, extends its calculated mobility authorization to the cross-line handover point.

[0009] d) When the TACS train enters the communication overlap area between the CBTC line and the TACS line, the TACS-VOBC sends the mobility authorization information that needs to be forwarded to the ZC to the OC and establishes communication with the ZC. The OC periodically sends the position envelope, head screening status, tail screening status and mobility authorization information of the train to the ZC.

[0010] e) After ZC obtains the TACS train information for the handover, it establishes a tracking relationship for the train and calculates the movement authorization information for the train. While the train handover is not completed, ZC continues to send the movement authorization information of the train to OC. After OC receives the movement authorization information, it forwards it to TACS-VOBC. When the TACS train establishes a link with ZC, ZC simultaneously sends the movement authorization information to the TACS train.

[0011] f) After TACS-VOBC obtains the ZC's mobile authorization information forwarded by OC or the mobile authorization directly from ZC, it merges it with the mobile authorization calculated by itself and extends the mobile authorization to the CBTC line area.

[0012] g) When the train head crosses the boundary point between the CBTC line and the TACS line, the TACS-OBC directly adopts the ZC's movement authorization and gradually releases resources as the train moves. When the train completely leaves the TACS line, the TACS-VOBC disconnects the OC link with the TACS line and releases the corresponding resources. When the TACS-VOBC is in the communication overlap area on the CBTC line side, the ZC periodically transfers the train position envelope to the OC.

[0013] A method for interconnecting and operating across lines between the TACS and CBTC systems, wherein when a TACS train travels from a CBTC line to a TACS line, the following steps are performed:

[0014] a) When a TACS train travels from the CBTC line to the TACS line and enters the communication overlap area, it establishes a link with the TACS line ATS.

[0015] b) The ATS of the TACS line automatically or manually issues a cross-line train reception route command to the TACS-VOBC according to the timetable. After receiving the route command, the TACS-VOBC begins to acquire resources from the train reception signal to the end of the route, and after all resources are locked, it sends the train reception signal opening command to the OC.

[0016] c) After receiving the command to open the receiving signal, the OC drives the receiving signal to open and sends the receiving signal opening information to the CBI of the CBTC line;

[0017] d) The ATS of the CBTC line automatically or manually handles cross-line departure routes according to the timetable. After the CBI checks that the route opening conditions are met and the receiving signal is open, the cross-line departure route is opened. ZC calculates the movement authorization to the cross-line junction point.

[0018] e) When the TACS train receives the movement authorization information from ZC and arrives at the cross-line junction, it splices its own calculated movement authorization information to ZC's movement authorization information and enters the TACS line according to the spliced ​​movement authorization.

[0019] f) When the TACS train leaves the CBTC line, it disconnects from the ZC and forwards the train position information from the OC to the ZC in the communication overlap area.

[0020] The technical solution adopted in this invention is that when the TACS train is running across different systems, the TACS-OBC and each subsystem of CBTC use the CBTC interoperability vehicle-to-ground communication protocol. The TACS ground equipment and the CBTC ground equipment directly use the CBTC interoperability ZC and CI communication protocols to perform functional interaction, so that the train can seamlessly switch between TACS lines and CBTC lines without stopping.

[0021] Specifically, it has the following beneficial effects:

[0022] 1. Enables TACS trains to run across TACS lines and CBTC lines without stopping and switching, resulting in high operating efficiency. Cross-line operation effectively improves the utilization rate of train resources and the passenger travel experience.

[0023] 2. It does not require any destructive modifications to the existing CBTC interface protocol and interaction process, and can be well supported without modifying existing equipment, thus saving resources.

[0024] The specific technical solution of the present invention and its beneficial effects will be described in detail in the following specific embodiments in conjunction with the accompanying drawings. Attached Figure Description

[0025] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0026] Figure 1 This is a schematic diagram showing the communication connections between the various subsystems when the train is operating across different systems. Detailed Implementation

[0027] 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. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0028] The relevant terms appearing in the specific embodiments of this invention are explained as follows:

[0029] TACS: Train Autonomous Operation System Based on Vehicle-to-Vehicle Communication

[0030] CBTC: Communication-based Automatic Train Control System

[0031] ATS: Automatic Train Monitoring System

[0032] VOBC: Vehicle Controller

[0033] OC: Target Controller

[0034] ZC: Regional Controller

[0035] CBI: Computer Interlocking System

[0036] Both the TACS system and the interoperable CBTC are communication-based train control systems, therefore the following can be inherited from the existing interoperable CBTC specifications:

[0037] 1. Ground communication systems, vehicle-to-ground wireless communication systems, and secure communication protocols used on top of these communication systems.

[0038] 2. Transponder system: TACS and CBTC use the same speed measurement and positioning technology, so the transponder system and message content can be inherited.

[0039] 3. For vehicle-mounted electronic maps, TACS does not fundamentally change the topological description of track line equipment compared to the CBTC system. Therefore, it can be based on the interoperable CBTC vehicle-mounted electronic map standard, and TACS-specific logical device objects can be added on this basis. However, the added objects only affect TACS lines. For CBTC lines, since there are no TACS-specific logical device objects, they have no impact on the electronic map of the CBTC line area.

[0040] In addition to inheriting the content from the existing CBTC interoperability standard, the communication connections between various subsystems during train cross-system operation are as follows: Figure 1 The dashed lines represent the existing interconnected CBTC standard or TACS product communication connection relationships, while the solid lines represent the new connection relationships provided by this invention or new functional interactions based on existing connection relationships.

[0041] Example 1

[0042] refer to Figure 1 As shown, a method for interconnecting and operating across lines using the TACS and CBTC systems involves the following steps when a TACS train travels from the TACS line to the CBTC line:

[0043] a) The TACS train travels from the TACS line toward the CBTC line and approaches the CBTC line.

[0044] b) The CBTC line ATS automatically or manually processes cross-line train reception routes according to the timetable. After the route is successfully processed, the CBI transmits the train reception signal opening information to the OC of the TACS line.

[0045] c) The TACS line ATS automatically or manually sends a cross-line departure route command to the TACS-VOBC according to the timetable. The TACS-VOBC obtains the cross-line departure route resources and, after obtaining the information that the receiving signal is open from the OC through the interface, extends its calculated mobility authorization to the cross-line handover point.

[0046] d) When the TACS train enters the communication overlap area between the CBTC and TACS lines, the TACS-VOBC sends the mobility authorization information that needs to be forwarded to the ZC to the OC and establishes communication with the ZC. The OC periodically sends the train's position envelope, head filtering status, tail filtering status, and mobility authorization information to the ZC. e) After obtaining the information of the TACS train being handed over, the ZC establishes a tracking relationship for the train and calculates the mobility authorization information for it. While the train handover is not complete, the ZC continues to send the train's mobility authorization information to the OC. After receiving the mobility authorization information, the OC forwards it to the TACS-VOBC. Once the TACS train establishes a connection with the ZC, the ZC simultaneously sends the mobility authorization information to the TACS train.

[0047] f) After TACS-VOBC receives the ZC's mobility grant information forwarded by the OC or directly from the ZC, it merges it with its own calculated mobility grant, extending the mobility grant to the CBTC line area. g) When the train head crosses the boundary point between the CBTC line and TACS, TACS-OBC directly adopts the ZC's mobility grant and gradually releases resources as the train moves. When the train completely leaves the TACS line, TACS-VOBC disconnects from the OC on the TACS line and releases the corresponding resources. When TACS-VOBC is in the communication overlap area on the CBTC line side, the ZC periodically transfers the train position envelope to the OC.

[0048] Example 2

[0049] refer to Figure 1 As shown, a method for cross-line operation of the TACS system and CBTC system is described. When a TACS train travels from the CBTC line to the TACS line, the following steps are performed:

[0050] a) When a TACS train travels from the CBTC line to the TACS line and enters the communication overlap area, it establishes a link with the TACS line ATS.

[0051] b) The ATS of the TACS line automatically or manually issues a cross-line train reception route command to the TACS-VOBC according to the timetable. After receiving the route command, the TACS-VOBC begins to acquire resources from the train reception signal to the end of the route, and after all resources are locked, it sends the train reception signal opening command to the OC.

[0052] c) After receiving the command to open the receiving signal, the OC drives the receiving signal to open and sends the receiving signal opening information to the CBI of the CBTC line.

[0053] d) The ATS of the CBTC line automatically or manually processes cross-line departure routes according to the timetable. The CBI opens the cross-line departure route after checking that the route opening conditions are met and the receiving signal is open. ZC calculates the movement authorization to the cross-line junction point.

[0054] e) When the TACS train receives the movement authorization information from ZC and arrives at the cross-line junction, it will append its own calculated movement authorization information to ZC's movement authorization information. Then, it will enter the TACS line according to the appended movement authorization.

[0055] f) When the TACS train leaves the CBTC line, it disconnects from the ZC and forwards the train position information from the OC to the ZC in the communication overlap area.

[0056] The technical solution adopted in the above embodiments allows trains to seamlessly switch between TACS and CBTC lines without stopping.

[0057] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Those skilled in the art should understand that the present invention includes, but is not limited to, the content described in the above specific embodiments. Any modifications that do not depart from the functional and structural principles of the present invention will be included within the scope of the claims.

Claims

1. A method for interconnecting and operating across lines between a TACS system and a CBTC system, characterized in that: When a TACS train travels from the TACS line to the CBTC line, the following steps are performed: a) TACS trains travel from the TACS line toward the CBTC line and approach the CBTC line; b) The CBTC line ATS automatically or manually handles cross-line train reception routes according to the timetable. After the route is successfully handled, the CBI transmits the train reception signal opening information to the OC of the TACS line. c) The TACS line ATS automatically or manually sends a cross-line departure route command to the TACS-VOBC according to the timetable. The TACS-VOBC obtains the cross-line departure route resources and, after obtaining the information that the receiving signal is open from the OC, extends its calculated mobility authorization to the cross-line handover point. d) When the TACS train enters the communication overlap area between the CBTC line and the TACS line, the TACS-VOBC sends the mobility authorization information that needs to be forwarded to the ZC to the OC and establishes communication with the ZC. The OC periodically sends the position envelope, head screening status, tail screening status and mobility authorization information of the train to the ZC. e) After ZC obtains the TACS train information for the handover, it establishes a tracking relationship for the train and calculates the movement authorization information for the train. While the train handover is not completed, ZC continues to send the movement authorization information of the train to OC. After OC receives the movement authorization information, it forwards it to TACS-VOBC. When the TACS train establishes a link with ZC, ZC simultaneously sends the movement authorization information to the TACS train. f) After TACS-VOBC obtains the ZC's mobile authorization information forwarded by OC or the mobile authorization directly from ZC, it merges it with the mobile authorization calculated by itself and extends the mobile authorization to the CBTC line area. g) When the train head crosses the boundary point between the CBTC line and the TACS line, the TACS-OBC directly adopts the ZC's movement authorization and gradually releases resources as the train moves. When the train completely leaves the TACS line, the TACS-VOBC disconnects the OC link with the TACS line and releases the corresponding resources. When the TACS-VOBC is in the communication overlap area on the CBTC line side, the ZC periodically transfers the train position envelope to the OC.

2. A method for interconnecting and operating across lines between a TACS system and a CBTC system, characterized in that: When a TACS train travels from the CBTC line to the TACS line, the following steps are performed: a) When a TACS train travels from the CBTC line to the TACS line and enters the communication overlap area, it establishes a link with the TACS line ATS. b) The ATS of the TACS line automatically or manually issues a cross-line train reception route command to the TACS-VOBC according to the timetable. After receiving the route command, the TACS-VOBC begins to acquire resources from the train reception signal to the end of the route, and after all resources are locked, it sends the train reception signal opening command to the OC. c) After receiving the command to open the receiving signal, the OC drives the receiving signal to open and sends the receiving signal opening information to the CBI of the CBTC line; d) The ATS of the CBTC line automatically or manually handles cross-line departure routes according to the timetable. After the CBI checks that the route opening conditions are met and the receiving signal is open, the cross-line departure route is opened. ZC calculates the movement authorization to the cross-line junction point. e) When the TACS train receives the movement authorization information from ZC and arrives at the cross-line junction, it splices its own calculated movement authorization information to ZC's movement authorization information and enters the TACS line according to the spliced ​​movement authorization. f) When the TACS train leaves the CBTC line, it disconnects from the ZC and forwards the train position information from the OC to the ZC in the communication overlap area.

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