Backup control system, method, equipment and medium for platform door linkage of urban railroad

Abstract

This invention belongs to the field of rail transit control technology, and relates to a backup control system, method, equipment, and medium for platform screen door linkage in urban rail transit. The system includes: onboard equipment, a train control center (TCC), an onboard radio, and a transponder. The onboard radio is installed in a cabinet and communicates bidirectionally with the TCC via a wireless network. The CTC sends ATO (Automatic Train Operation) plans and temporary speed limit information to the onboard equipment through an existing TSRS (Train Safety System) server or the TCC. Furthermore, when the TSRS equipment fails, the onboard equipment sends door opening / closing control commands to the TCC to achieve linkage between the train doors and platform screen doors. Compared with existing technologies, this invention improves system availability by adding wireless communication between the onboard equipment and the TCC. After a TSRS equipment failure, the onboard equipment obtains the ATO plan and temporary speed limit information through the TCC to control the safe operation of the train. Upon arrival at the station, the TCC enables platform screen door linkage control, further enhancing system availability.

Description

Technical Field

[0001] This invention relates to the field of rail transit control technology, and in particular to a backup control system, method, equipment and medium for the linkage of platform screen doors in urban railways. Background Technology

[0002] As a high-capacity, rapid rail transit system serving urban areas and metropolitan areas, suburban railways possess an inherent advantage in interconnectivity with national railways, intercity railways within metropolitan areas, and other suburban railways due to their unified system standards. Passenger flow intensity at the urban and metropolitan area levels is relatively low, making them suitable for network-based operation. Currently, suburban railways are planned and implemented in major cities across China. To protect passenger safety and prevent accidental falls onto the tracks or contact with moving trains, platform screen doors are installed at all platforms. The platform screen door system interfaces with the signaling system. When onboard equipment sends a door opening / closing command to the vehicle system, it also transmits the platform screen door opening / closing command to the TCC (Train Control Center) via the ground equipment TSRS (Temporary Speed ​​Limit Server). The TCC, upon receiving the door opening / closing command from the onboard equipment, sends it to the platform screen door system. Simultaneously, the platform screen door status is collected and transmitted to the onboard equipment via TSRS.

[0003] CN117184189A discloses a rail transit signaling system and its communication method with a platform screen door system. However, the main problem this method addresses is that it places the interlocking controller in the rail transit signaling system in the platform screen door control room. This allows for bus interface communication and / or direct communication between controllers, replacing the existing relay-based communication method with the platform screen door system. This reduces the distance between the interlocking controller and the platform screen door controller, shortening the time difference between the train doors and platform screen door synchronization. However, it does not consider the problem that when the TSRS equipment malfunctions, the train doors and platform screen doors cannot be synchronized upon arrival, requiring the driver to report to the dispatcher for manual opening and closing of the platform screen doors, thus impacting operational efficiency. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a backup control system, method, equipment and medium for platform screen door linkage in urban railways. By increasing the wireless communication between the on-board equipment and the TCC, after the TSRS equipment fails, the on-board equipment obtains the ATO (Automatic Train Operation) operation plan and temporary speed limit information through the TCC to control the safe operation of the train. After the train stops at the station, the platform screen door linkage control is realized through the TCC, thereby improving the availability of the system.

[0005] The objective of this invention can be achieved through the following technical solutions:

[0006] According to a first aspect of the present invention, a backup control system for the linkage of platform doors on urban railways is provided. Based on the existing CTCS2+ATO train control system, the system adds onboard equipment and TCC bidirectional wireless communication to realize that in the event of TSRS equipment failure, the onboard equipment controls the linkage opening and closing of platform doors and train doors through communication with TCC, as well as the transmission of ATO operation plans and temporary speed limits in sections.

[0007] As a preferred technical solution, the system includes: on-board equipment, TCC, on-board radio, and transponder, wherein the on-board radio is installed in a cabinet and communicates bidirectionally with the TCC via a wireless network; the CTC equipment sends ATO operation plans and temporary speed limit information to the on-board equipment through an existing TSRS server or TCC; and when the TSRS equipment fails, the on-board equipment sends door opening and closing control commands to the TCC to achieve linkage between the vehicle doors and the platform doors.

[0008] As a preferred technical solution, TCC communication management information packets are added to the inter-station transponder group, the exit passive transponder group, and the TCC boundary transponder group in the adjacent section outside the entrance signal.

[0009] As a preferred technical solution, the TCC communication management information packet includes the TCC's device number and calling IP address, which is used for the vehicle-mounted equipment to call the TCC and establish a connection.

[0010] According to a second aspect of the present invention, a backup control method for the linkage of platform screen doors in urban railway stations is provided, the method comprising the following steps:

[0011] Step 1: After the train departs from the station, it passes the exit transponder and obtains the TCC call information from the transponder message. The onboard equipment then actively establishes a two-way wireless communication session with the TCC based on the TCC call information.

[0012] Step 2: The onboard equipment periodically reports the train's position to the TCC. The TCC forwards the train's position to the CTC and periodically sends the ATO operation plan and temporary speed limit information to the onboard equipment. When the onboard equipment communicates normally with the TSRS, the onboard equipment uses the operation plan sent by the TSRS to control the train's operation. When the TSRS equipment fails, the onboard equipment continues to control the train's operation using the ATO operation plan sent by the TCC.

[0013] Step 3: After the train enters the station track and stops, the onboard equipment determines that the train has come to a complete stop and provides a door opening permission instruction to the train based on the information received from the platform side.

[0014] Step 4: When a door opening / closing request is received, the onboard equipment sends a platform door opening / closing command to the TCC.

[0015] Step 5: If the onboard equipment sends a platform door opening command to the TCC and receives valid platform door status information from the TCC within a specified time, and the platform door status matches the requirements of the platform door opening / closing command, then the platform door linkage is considered successful. If the onboard equipment sends a platform door opening command to the TCC but does not receive platform door status information from the TCC within a specified time, then the platform door linkage is considered failed. If valid platform door status information is received within a specified time, and the platform door status is open, then the platform door linkage is considered successful.

[0016] As a preferred technical solution, when a train is running on a section and encounters special circumstances, if the CTC needs to issue a temporary speed limit for the section, the CTC issues the temporary speed limit for the section to the on-board equipment through the TCC. The on-board equipment generates a target speed control curve based on the temporary speed limit and the line speed limit information to monitor the safe operation of the train.

[0017] As a preferred technical solution, the TCC call information includes the TCC device number and the calling IP address.

[0018] As a preferred technical solution, the information interaction between the TCC and the vehicle-mounted equipment adopts a secure communication protocol to ensure the security of information transmission.

[0019] As a preferred technical solution, step three specifically involves: after the train enters the station and stops, the onboard equipment obtains the train's precise stopping position and platform side information from the stopping position information packet in the precise positioning transponder. The ATO controls the train's operation to achieve precise stopping based on the precise stopping position. When the onboard equipment determines that the distance error between the train's actual stopping position and the operational stopping positioning reference point is within the safety stopping window configured by the onboard equipment, it considers the train to have stopped accurately. Based on the received platform side information, it provides the train with a door opening permission instruction and sends the accurate stopping information to the TCC.

[0020] As a preferred technical solution, step four specifically includes:

[0021] When the onboard equipment receives a door opening / closing request from the ATO or the driver, it checks whether the onboard ATP outputs the corresponding door opening / closing permission signal and whether the ATP door opening / closing permission switch is in the ATP permission position. If the onboard ATP outputs the corresponding door opening / closing permission signal and the ATP door opening / closing permission switch is in the ATP permission position, the onboard equipment outputs a door opening / closing command to the vehicle and simultaneously sends a platform door opening / closing command to the TCC. After receiving the platform door opening / closing command from the onboard equipment, the TCC determines whether the conditions for opening / closing the platform door are met. If they are met, the TCC controls the relay to execute the platform door opening / closing command and collects the platform door status in real time, periodically sending the platform door status to the onboard equipment.

[0022] According to a third aspect of the present invention, an electronic device is provided, including a memory and a processor, wherein the memory stores a computer program, and the processor executes the program to implement the method described thereon.

[0023] According to a fourth aspect of the present invention, a computer-readable storage medium is provided having a computer program stored thereon, which, when executed by a processor, implements the method described thereon.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] (1) The backup control system and method proposed in this invention can realize the linkage control of vehicle doors and platform doors by wirelessly communicating with TCC in the event of TSRS equipment failure, which improves the availability of the system compared with the existing system.

[0026] (2) The backup control system and method proposed in this invention, in the event of TSRS equipment failure, the on-board equipment obtains ATO operation plan and temporary speed limit information through TCC, which improves the operating efficiency and driving safety in the event of failure compared with the existing system.

[0027] (3) Based on the existing train control system architecture and equipment, the present invention achieves backup control by adding wireless messages, which can achieve compatibility with the existing train control system. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the backup control system for the platform door linkage of the present invention.

[0029] Figure 2 This is a flowchart of the backup control method of the present invention;

[0030] Figure 3 This is a schematic diagram of the information interaction for the linkage control of train doors and platform doors. Detailed Implementation

[0031] 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, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0032] Unless otherwise defined, the technical terms or scientific terms involved in this application shall have the ordinary meanings understood by those with ordinary skills in the technical field to which this application belongs. The words such as "a", "an", "one kind", "the" and the like involved in this application do not indicate a quantity limitation and may represent a singular or plural number. The terms "comprise", "include", "have" and any variations thereof involved in this application are intended to cover non-exclusive inclusion; for example, a process, method, system, product or device that includes a series of steps or modules (units) is not limited to the listed steps or units, but may further include steps or units not listed, or may further include other steps or units inherent to these processes, methods, products or devices. The words such as "connect", "be connected", "couple" and the like involved in this application are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The "multiple" involved in this application means two or more. "And / or" describes the association relationship of associated objects and indicates that three relationships may exist. For example, "A and / or B" may mean: A exists alone, A and B exist simultaneously, and B exists alone. The character " / " generally indicates an "or" relationship between the front and back associated objects. The terms "first", "second", "third" and the like involved in this application are only used to distinguish similar objects and do not represent a specific sorting of the objects.

[0033] This embodiment provides a backup control system for the interlocking of platform screen doors of urban rail transit. By combining the ground train control center equipment with on-vehicle equipment, the backup control of the interlocking of train doors and platform screen doors is achieved under the failure of TSRS equipment, improving the availability of the system. As Figure 1 shown, based on the existing CTCS2+ATO train control system, this system realizes that under the failure of TSRS equipment, the on-vehicle equipment controls the interlocking switch of platform screen doors and train doors, as well as the sending of ATO operation plans and temporary speed limits in sections through the newly added two-way wireless communication between the on-vehicle equipment and TCC.

[0034] This system includes components such as on-vehicle equipment, TCC, on-vehicle radio and balise. Among them, the on-vehicle radio is installed in the cabinet and communicates with TCC bidirectionally through the wireless network. TCC communication management information packets are added to the balise group in the adjacent section outside the approaching signal, the outbound passive balise group and the balise group at the TCC boundary. The TCC communication management information packet contains the equipment number and call IP address of TCC, which are used for the on-vehicle equipment to call TCC and establish a connection. The CTC equipment sends ATO operation plans and temporary speed limit information to the on-vehicle equipment through the existing TSRS server or TCC. And when the TSRS equipment fails, the on-vehicle equipment realizes the interlocking of train doors and platform screen doors by sending a door opening / closing control command to TCC.

[0035] The above is an introduction to the system embodiments. The following method embodiments will further illustrate the solution of the present invention.

[0036] like Figure 2 As shown, this embodiment provides a backup control method for the linkage of platform doors in urban railways. Based on the above system implementation, the process of information exchange between various components in the system to achieve linkage control of train doors / platform doors is as follows: Figure 3 As shown, the method includes the following steps:

[0037] Step one: After the train departs from the station, it passes the exit transponder and obtains the TCC call information from the transponder message. Based on this information, the onboard equipment actively establishes a two-way wireless communication session with the TCC. The TCC call information includes the TCC's device number and the calling IP address. The information exchange between the TCC and the onboard equipment uses a secure communication protocol to ensure the security of information transmission.

[0038] Step two: The onboard equipment periodically reports the train's position to the TCC. The TCC forwards the train's position to the CTC and simultaneously sends the ATO (Automatic Train Operation) plan and temporary speed limit information to the onboard equipment periodically. When the onboard equipment communicates normally with the TSRS (Train Service Response System), the onboard equipment uses the operation plan sent by the TSRS to control the train's operation. When the TSRS malfunctions, the onboard equipment continues to control the train's operation using the ATO plan sent by the TCC. In one embodiment, when the train is running on a section of track, if a special situation arises and the CTC needs to issue a temporary speed limit for the section, the CTC issues the temporary speed limit to the onboard equipment through the TCC. The onboard equipment generates a target speed control curve based on the temporary speed limit and the line speed limit information to monitor the safe operation of the train.

[0039] Step 3: After the train enters the station track and stops, the onboard equipment determines that the train has come to a complete stop and provides a door opening permission instruction to the train based on the information received from the platform side.

[0040] Specifically, after the train enters the station and stops, the onboard equipment obtains the train's precise stopping position and platform side information from the stopping position information packet in the precise positioning transponder. The ATO controls the train's operation to achieve precise stopping based on the precise stopping position. When the onboard equipment determines that the distance error between the train's actual stopping position and the operational stopping positioning reference point is within the safety stopping window configured on the onboard equipment, it considers the train to have stopped accurately. Based on the received platform side information, it provides the train with a door opening permission instruction and sends the stopping accuracy information to the TCC.

[0041] Step 4: When a door opening / closing request is received, the onboard equipment sends a platform door opening / closing command to the TCC.

[0042] Specifically, when the onboard equipment receives a door opening / closing request from the ATO or the driver, it checks whether the onboard ATP (Automatic Train Protection) outputs a corresponding door opening / closing permission signal and whether the ATP door opening / closing permission switch is in the ATP permission position. If the onboard ATP outputs the corresponding door opening / closing permission signal and the ATP door opening / closing permission switch is in the ATP permission position, the onboard equipment outputs a door opening / closing command to the vehicle and simultaneously sends a platform door opening / closing command to the TCC (Train Control Center). After receiving the platform door opening / closing command from the onboard equipment, the TCC determines whether the platform door opening / closing conditions are met. If so, it controls the relay to execute the platform door opening / closing command and collects the platform door status in real time, periodically sending the platform door status to the onboard equipment. In one embodiment, after receiving the platform door opening command from the onboard equipment, the TCC determines whether the platform door opening conditions are met by combining the train's stopping and accurate stopping conditions, the track, and the door opening command.

[0043] Step 5: If the onboard equipment sends a platform door opening command to the TCC and receives valid platform door status information from the TCC within a specified time, and the platform door status matches the requirements of the platform door opening / closing command, then the platform door linkage is considered successful. If the onboard equipment sends a platform door opening command to the TCC but does not receive platform door status information from the TCC within a specified time, then the platform door linkage is considered failed. If valid platform door status information is received within a specified time, and the platform door status is open, then the platform door linkage is considered successful.

[0044] After the train doors and platform doors are closed at the station, the train continues its journey to the next station.

[0045] The electronic device of this invention includes a central processing unit (CPU), which can perform various appropriate actions and processes according to computer program instructions stored in read-only memory (ROM) or loaded from a storage unit into random access memory (RAM). The RAM may also store various programs and data required for device operation. The CPU, ROM, and RAM are interconnected via a bus. Input / output (I / O) interfaces are also connected to the bus.

[0046] Multiple components in the device are connected to the I / O interface, including: input units such as keyboards and mice; output units such as various types of displays and speakers; storage units such as disks and optical discs; and communication units such as network interface cards (NICs), modems, and wireless transceivers. The communication unit allows the device to exchange information / data with other devices through computer networks such as the Internet and / or various telecommunications networks.

[0047] The processing unit executes the various methods and processes described above, such as method steps one through five. For example, in some embodiments, method steps one through five may be implemented as a computer software program tangibly contained in a machine-readable medium, such as a storage unit. In some embodiments, part or all of the computer program may be loaded and / or installed on the device via ROM and / or a communication unit. When the computer program is loaded into RAM and executed by the CPU, one or more steps of method steps one through five described above may be performed. Alternatively, in other embodiments, the CPU may be configured to execute method steps one through five by any other suitable means (e.g., by means of firmware).

[0048] The functions described above in this document can be performed, at least in part, by one or more hardware logic components. For example, exemplary types of hardware logic components that can be used, without limitation, include: Field Programmable Gate Arrays (FPGAs), Application-Specific Integrated Circuits (ASICs), Application Standard Products (ASSPs), System-on-Chip (SoCs), Complex Programmable Logic Devices (CPLDs), and so on.

[0049] The program code used to implement the methods of the present invention can be written in any combination of one or more programming languages. This program code can be provided to a processor or controller of a general-purpose computer, special-purpose computer, or other programmable data processing device, such that when executed by the processor or controller, the program code causes the functions / operations specified in the flowcharts and / or block diagrams to be implemented. The program code can be executed entirely on the machine, partially on the machine, as a standalone software package partially on the machine and partially on a remote machine, or entirely on a remote machine or server.

[0050] In the context of this invention, a machine-readable medium can be a tangible medium that may contain or store a program for use by or in conjunction with an instruction execution system, apparatus, or device. A machine-readable medium can be a machine-readable signal medium or a machine-readable storage medium. Machine-readable media can include, but are not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination of the foregoing. More specific examples of machine-readable storage media include electrical connections based on one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination of the foregoing.

[0051] 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. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered 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 backup control method for the linkage of platform screen doors in urban railway stations, characterized in that, This method is based on the backup control system of the intercity railway platform door linkage. The system is based on the existing CTCS2+ATO train control system. By adding onboard equipment and TCC bidirectional wireless communication, the onboard equipment can control the platform door and car door linkage opening and closing, as well as the transmission of ATO operation plan and temporary speed limit in the section, in the event of TSRS equipment failure. The backup control method includes the following steps: Step 1: After the train departs from the station, it passes the exit transponder and obtains the TCC call information from the transponder message. The onboard equipment then actively establishes a two-way wireless communication session with the TCC based on the TCC call information. Step 2: The onboard equipment periodically reports the train's position to the TCC. The TCC forwards the train's position to the CTC and periodically sends the ATO operation plan and temporary speed limit information to the onboard equipment. When the onboard equipment communicates normally with the TSRS, the onboard equipment uses the operation plan sent by the TSRS to control the train's operation. When the TSRS equipment fails, the onboard equipment continues to control the train's operation using the ATO operation plan sent by the TCC. Step 3: After the train enters the station track and stops, the onboard equipment determines that the train has come to a complete stop and provides a door opening permission instruction to the train based on the information received from the platform side. Step 4: When a door opening / closing request is received, the onboard equipment sends a platform door opening / closing command to the TCC. Step 5: If the onboard equipment sends a platform door opening command to the TCC and receives valid platform door status information from the TCC within a specified time, and the platform door status matches the requirements of the platform door opening / closing command, then the platform door linkage is considered successful. If the onboard equipment sends a platform door opening command to the TCC but does not receive platform door status information from the TCC within a specified time, then the platform door linkage is considered failed. If valid platform door status information is received within a specified time, and the platform door status is open, then the platform door linkage is considered successful.

2. The backup control method for platform door linkage in urban railways according to claim 1, characterized in that, The system includes: on-board equipment, TCC, on-board radio, and transponder. The on-board radio is installed in a cabinet and communicates bidirectionally with the TCC via a wireless network. The CTC equipment sends ATO operation plans and temporary speed limit information to the on-board equipment through an existing TSRS server or TCC. In addition, when the TSRS equipment fails, the on-board equipment sends door opening and closing control commands to the TCC to achieve linkage between the train doors and the platform doors.

3. The backup control method for the linkage of platform doors in urban railway stations according to claim 1, characterized in that, Add TCC communication management information packets to the transponder groups in the adjacent sections outside the entrance signal, the passive transponder groups at the exit, and the transponder groups at the TCC boundary.

4. The backup control method for the linkage of platform doors in urban railway stations according to claim 3, characterized in that, The TCC communication management information packet contains the TCC's device number and calling IP address, which is used by the vehicle-mounted equipment to call the TCC and establish a connection.

5. The backup control method for the linkage of platform doors in urban railway stations according to claim 1, characterized in that, When a train is running on a section of track, if a special situation arises and the CTC needs to issue a temporary speed limit for the section, the CTC will issue the temporary speed limit to the onboard equipment through the TCC. The onboard equipment will then generate a target speed control curve based on the temporary speed limit and the track speed limit information to monitor the safe operation of the train.

6. The backup control method for the linkage of platform doors in urban railway stations according to claim 1, characterized in that, The TCC call information includes the TCC's device number and the calling IP address.

7. A backup control method for platform door linkage in urban railways according to claim 1, characterized in that, The information exchange between the TCC and the vehicle-mounted equipment adopts a secure communication protocol to ensure the security of information transmission.

8. A backup control method for platform door linkage in urban railways according to claim 1, characterized in that, Step three is as follows: After the train enters the station and stops, the onboard equipment obtains the train's precise stopping position and platform side information from the stopping position information packet in the precise positioning transponder. The ATO controls the train's operation to achieve precise stopping based on the precise stopping position. When the onboard equipment determines that the distance error between the train's actual stopping position and the operational stopping positioning reference point is within the safety stopping window configured by the onboard equipment, it is considered that the train has come to a complete stop. Based on the received platform side information, the ATO provides the train with a door opening permission instruction and sends the complete stop information to the TCC.

9. A backup control method for the linkage of platform doors in urban railway stations according to claim 1, characterized in that, The fourth step is specifically as follows: When the onboard equipment receives a door opening / closing request from the ATO or the driver, it checks whether the onboard ATP outputs the corresponding door opening / closing permission signal and whether the ATP door opening / closing permission switch is in the ATP permission position. If the onboard ATP outputs the corresponding door opening / closing permission signal and the ATP door opening / closing permission switch is in the ATP permission position, the onboard equipment outputs a door opening / closing command to the vehicle and sends a platform door opening / closing command to the TCC at the same time. After receiving the platform door opening / closing command from the onboard equipment, the TCC determines whether the conditions for opening / closing the platform door are met. If they are met, it controls the relay to execute the platform door opening / closing command and collects the platform door status in real time, periodically sending the platform door status to the onboard equipment.

10. An electronic device comprising a memory and a processor, wherein the memory stores a computer program, characterized in that, When the processor executes the program, it implements the method as described in any one of claims 1 to 9.

11. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the program is executed by the processor, it implements the method as described in any one of claims 1 to 9.

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