Continuous protection unlocking method based on line resource management and electronic equipment

Abstract

The invention relates to a continuous protection unlocking method based on line resource management and electronic equipment. The method comprises a continuous protection cancelling process and a continuous protection unlocking process. The continuous protection cancelling process comprises the steps that an Overlap cancelling model is constructed, the Overlap cancelling model is provided with a cancelling timer, and when countdown of the cancelling timer is finished, a resource manager cancels continuous protection and sends an authorization terminal point to be withdrawn to a protection signal machine to a train; the continuous protection unlocking process comprises the following steps: constructing an Overlap unlocking model, wherein the Overlap unlocking model is configured with an unlocking timer; and after the continuous protection is cancelled, the'unlocking timer 'starts countdown, and when the countdown of the'unlocking timer' is finished, if the track sections in the continuous protection range are clear, the resource manager unlocks the turnout in the continuous protection range. Compared with the prior art, the method has the advantages that the continuous protection unlocking efficiency is improved, and the consistency, stability and expandability of the system are improved.

Description

Technical Field

[0001] The present invention relates to the field of rail transit control, and particularly to a continuous protection unlocking method and an electronic device based on line resource management. Background Art

[0002] In a Communication Based Train Control (CBTC) system, overlap is mainly used to extend the End of Authority (EOA) of a train so that the CBTC train can stop precisely. This is because the Carborne Controller (CC) cannot drive the train to the EOA (End of Authority) for pre-protection purposes and can only stop at a certain distance from the EOA. Therefore, when the stopping point is very close to the forward protection signal and the EOA is only at the signal, the train cannot stop precisely.

[0003] The Computer Based Interlocking System (CI) notifies the Zone Controller (ZC) of the established overlap information by locking the switches within the overlap range. The ZC then notifies the CC of the extended EOA, enabling the train to continue moving forward until the stopping point. Among them, the overlap authorization information flows in the three systems in the order of CI, ZC, and CC. When unlocking the overlap, it is exactly the opposite. The CC notifies the ZC that it has stopped, the ZC then notifies the CI that the overlap can be unlocked, and finally the CI completes the unlocking operation.

[0004] Since the train must go through a process of establishing and then unlocking the overlap when stopping precisely, the unlocking efficiency of the overlap will greatly affect the train tracking interval in the CBTC system. Moreover, during the unlocking process of the overlap, any problem in the information transfer process of the three systems will cause the CI to unlock the overlap according to the worst-case countdown, thus seriously affecting the operation efficiency.

[0005] Therefore, in a more efficient new-generation CBTC system, we will use a Resource Management Unit (RMU) to replace the CI and ZC, integrate the information flow and control flow of the CI and ZC, establish a unified model for various conditions of unlocking the overlap, thereby reducing the system complexity, improving the efficiency of unlocking the overlap, and increasing the system availability.

[0006] After retrieval, the Chinese invention patent application publication number CN114368418A discloses a method for safely and quickly unlocking a continuous protection approach. The on-vehicle controller calculates in real time whether the train can stop stably at the designated stopping point and sends the information to the area controller. The area controller confirms the allowed unlocking status information and sends it to the interlocking system. The interlocking system adopts different delay strategies according to the timing of receiving the allowed unlocking status information to unlock the continuous protection approach. The on-vehicle controller actively calculates the precise stopping point of the train in real time. After determining that the train can stop stably at the designated stopping point, the interlocking system can immediately unlock the continuous protection approach. This existing patent application has problems such as many links involved in unlocking mitigation and low efficiency of continuous protection unlocking.

[0007] How to achieve efficient continuous protection unlocking in the CBTC system has become a technical problem to be solved. Summary of the Invention

[0008] The purpose of the present invention is to overcome the defects of the above-mentioned existing technologies and provide a continuous protection unlocking method and an electronic device based on line resource management.

[0009] The purpose of the present invention can be achieved through the following technical solutions:

[0010] According to one aspect of the present invention, a continuous protection unlocking method based on line resource management is provided. The method includes a continuous protection cancellation process and a continuous protection unlocking process;

[0011] The continuous protection cancellation process includes: constructing an Overlap cancellation model. The Overlap cancellation model is configured with a "cancellation timer". When the countdown of the "cancellation timer" ends, the resource manager cancels the continuous protection and sends an authorized end point back to the protection signal to the train;

[0012] The continuous protection unlocking process includes: constructing an Overlap unlocking model. The Overlap unlocking model is configured with an "unlock timer"; after the continuous protection is cancelled, the countdown of the "unlock timer" starts. When the countdown of the "unlock timer" ends, if the track sections within the continuous protection range are all clear, the resource manager unlocks the turnouts within the continuous protection range.

[0013] Preferably, the "cancellation timer" ends after natural countdown or is ended in advance by any "cancellation input".

[0014] More preferably, the "cancellation input" includes a first "cancellation input", specifically: if the train has stopped stably during the countdown of the "cancellation timer" and the information of task completion has been sent, the countdown of the "cancellation timer" directly ends.

[0015] More preferably, the "cancellation of input" includes a second "cancellation of input", specifically: If the train has come to a complete and accurate stop during the countdown of the "cancellation timer", but has not sent an information indicating the completion of the task, and if the resource manager determines that the train's head position is within the Overlap release distance from the protective signal, then the train releases the continuous protection and the countdown of the "cancellation timer" ends directly.

[0016] Preferably, the Overlap cancellation model is further configured with a trigger unlocking section, specifically: A plurality of track sections upstream of the continuous protection are configured as the trigger unlocking section.

[0017] More preferably, after the train occupies any one of the trigger unlocking sections, it will come to a complete stop at the stopping point in front of the continuous protection after at most the time of the "cancellation timer".

[0018] Preferably, the "unlocking timer" ends after natural countdown or is triggered to end prematurely by any "unlocking input".

[0019] More preferably, the "unlocking input" includes a first "unlocking input", specifically: If during the countdown of the "unlocking timer", the time for one interaction between the resource manager and the train information has passed, and the train has come to a complete stop and sent an information indicating the completion of the task to the resource manager, then the countdown of the "unlocking timer" ends directly.

[0020] More preferably, the "unlocking input" includes a second "unlocking input", specifically: If during the countdown of the "unlocking timer", the time for one interaction between the resource manager and the train information has passed, and the train has come to a complete and accurate stop but has not sent an information indicating the completion of the task to the resource manager, and if the resource manager determines that the head position is within the Overlap release distance configured for the protective signal, then the train releases the continuous protection and the countdown of the "unlocking timer" ends directly.

[0021] More preferably, the "unlocking input" includes a third "unlocking input", specifically: If during the countdown of the "unlocking timer", the resource manager receives the information sent by the train that the stop guarantee point has been confirmed to have retreated to the protective signal, the countdown of the "unlocking timer" ends immediately.

[0022] Preferably, the "unlocking timer" ensures that the train can come to a complete stop within at most the configured "unlocking timer" time since the moment the continuous protection is cancelled.

[0023] More preferably, the time for one interaction between the resource manager and the train information is the sum of the maximum communication delay from the resource manager to the on-vehicle controller and the maximum communication delay from the on-vehicle controller to the resource manager.

[0024] According to another aspect of the present invention, there is provided an electronic device, including a memory and a processor, where a computer program is stored on the memory, and when the processor executes the program, the method described above is implemented.

[0025] According to the third aspect of the present invention, there is provided a computer-readable storage medium, on which a computer program is stored, and when the program is executed by a processor, the method described above is implemented.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] 1) In the present invention, the Overlap cancellation process and the Overlap unlocking process are modeled, supporting multiple "cancellation inputs" and multiple "unlocking inputs". Any one of the inputs can trigger the premature end of the timer countdown configured in the model, enabling the resource manager to cancel or unlock the Overlap as soon as possible; in addition, the RMU replaces the ZC and CI, reducing the interaction links; therefore, the continuous protection unlocking efficiency is improved.

[0028] 2) The present invention introduces the parking guarantee point information into the Overlap unlocking process model, thereby ending the Overlap unlocking countdown faster, improving the efficiency of Overlap unlocking, and also helping to reduce the train tracking interval.

[0029] 3) The Overlap cancellation model and the Overlap unlocking model of the present invention support multiple inputs, produce the same output, and support the expansion of input interfaces, improving the consistency, stability, and scalability of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic flow chart of the continuous protection unlocking method in the present invention;

[0031] Figure 2 It is a schematic diagram of the continuous protection cancellation process in the first "cancellation input" scenario of the present invention;

[0032] Figure 3 It is a schematic diagram of the continuous protection cancellation process in the second "cancellation input" scenario of the present invention;

[0033] Figure 4 It is a schematic diagram of the continuous protection unlocking process in the first "unlocking input" scenario of the present invention;

[0034] Figure 5 It is a schematic diagram of the continuous protection unlocking process in the second "unlocking input" scenario of the present invention;

[0035] Figure 6 It is a schematic diagram of the continuous protection unlocking process in the third "unlocking input" scenario of the present invention. Detailed Implementation Manner

[0036] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0037] Embodiment 1

[0038] This embodiment relates to a continuous protection unlocking method based on line resource management, as Figure 1 , and the method includes the following steps:

[0039] Step A: In the initial state, continuous protection (Overlap) has been established. This indicates that the Resource Manager (RMU) has locked the turnout within the Overlap, and the End of Authority (EOA) sent to the train has extended to the end of the Overlap.

[0040] Step B: Construct an Overlap cancellation model for Overlap cancellation.

[0041] Model method: Configure a trigger unlocking section and a "cancellation timer" in the static data, and configure several track sections upstream of the Overlap as the trigger unlocking section. These configurations can generally ensure that after the train occupies any one of the trigger unlocking sections, it will stop stably at the stop point in front of the Overlap after at most the time of the "cancellation timer". When the "cancellation timer" ends after natural countdown or is prematurely ended by any "cancellation input", the Resource Manager cancels the Overlap and generates corresponding outputs.

[0042] The first "cancellation input": If the train has stopped stably during the countdown of the "cancellation timer" and sent a task completion message (indicating that the train determines that it has stopped precisely at the platform and the head positioning distance from the protection signal is within a certain distance, where the certain distance is the Overlap release distance), the countdown of the "cancellation timer" ends directly.

[0043] The second "cancellation input": If the train has stopped stably and accurately during the countdown of the "cancellation timer" but has not sent a task completion message, when the RMU determines that the train head positioning is within a certain distance (i.e., the "Overlap release distance" mentioned later) from the protection signal, it is considered that the train can release the Overlap, and the countdown of the "cancellation timer" can also be ended directly.

[0044] Output: After the above process, no matter in what way, when the countdown of "canceling the timer" ends, the Overlap is finally canceled. The EOA sent by the RMU to the train retreats to the position of the protective signal, but the turnout within the Overlap range has not been unlocked yet.

[0045] The above "cancellation input" is not limited to these two current methods, nor does it restrict that the information source must be the train. If there is a new cancellation method in the future, it only needs to adapt the input interface and regard it as a new "cancellation input".

[0046] Step C: Construct an Overlap unlocking model and unlock the Overlap.

[0047] Model method: In the static data, a "unlocking timer" is configured for the unlocking process after the Overlap is canceled. This "unlocking timer" can ensure that the train can come to a complete stop at most after the configured "unlocking timer" time since the moment the Overlap is canceled. The worst-case assumption is that when the Overlap is canceled, the train has not stopped yet and starts emergency braking since the cancellation moment. When this "unlocking timer" ends after the natural countdown or is ended in advance by any "unlocking input", the RMU unlocks the Overlap and generates the corresponding output.

[0048] The first "unlocking input": If during the countdown of the "unlocking timer", the time for one interaction between the RMU and the train information (i.e., the restricted variable synchronization delay described later) has passed, and the train is still stationary and sends a task completion message, then the countdown of the "unlocking timer" can end directly.

[0049] The second "unlocking input": If during the countdown of the "unlocking timer", the time for one interaction between the RMU and the train information has passed, and the train is still stationary and accurately positioned but does not send a task completion message, then when the RMU determines that the train's head positioning is within a certain distance from the protective signal (i.e., the Overlap release distance), it is considered that the train can release the Overlap, and the countdown of the "unlocking timer" can also end directly.

[0050] The third "unlocking input": If during the countdown of the "unlocking timer", the RMU receives that the stop guarantee point from the train has been confirmed to retreat to the new EOA, that is, the protective signal, then the countdown of the "unlocking timer" can also end immediately.

[0051] Output: After the above process, no matter in what way, when the countdown of the "unlocking timer" ends, if the track sections within the Overlap range are all clear, then the Overlap is finally unlocked, that is, the turnouts within the Overlap range are unlocked.

[0052] The above "unlock input" is not limited to the current three methods, nor does it restrict that the information source must be a train. If there is a new unlocking method in the future, it only needs to adapt the input interface and regard it as a new "unlock input".

[0053] Step D, end state, Overlap is unlocked. This indicates that the RMU has unlocked the switches within the Overlap, and these switches can be assigned to other objects from this moment on.

[0054] Embodiment 2

[0055] This embodiment relates to a continuous protection unlocking method based on line resource management. Assume that there is a train about to correctly stop at a platform, then the RMU has started the Overlap cancellation process. In the method of the Overlap cancellation model, when the train occupies the unlocking section (this section can be configured upstream of the platform track), the "cancellation timer" starts counting down. However, this "cancellation timer" is often very long and will not end even after the train correctly stops, resulting in a waste of time.

[0056] The following details how to quickly end the countdown of the "cancellation timer" through the "cancellation input" of the Overlap cancellation model.

[0057] The situation of the first "cancellation input" is as Figure 2 shown. After the train stops steadily and accurately at the stopping point, according to its own operation task and the distance between the front of the train and the front protection signal, it is judged that the task is completed, and then it will send a task completion message to the RMU. After receiving the status of the train task completion, the RMU immediately ends the countdown of the "cancellation timer" of the front Overlap, and retracts the EOA to the position of the protection signal. At this time, the Overlap still remains locked, that is, the switches within the Overlap cannot be moved and cannot be assigned to other objects for use.

[0058] The situation of the second "cancellation input" is as Figure 3 shown. When the train can send the information of stopping steadily and accurately to the RMU but cannot send the task completion information, and the RMU judges that the front of the train is positioned within the Overlap release distance configured from the protection signal, it immediately ends the countdown of the "cancellation timer" of the front Overlap, and retracts the EOA to the position of the protection signal. At this time, the Overlap still remains locked, that is, the switches within the Overlap cannot be moved and cannot be assigned to other objects for use.

[0059] During the cancellation process of the above two overlaps, all the calculations made by the RMU using the information of the on-vehicle controller (CC) and itself are to generate a "cancellation input", and through the overlap cancellation model, it outputs whether to immediately end the countdown of the "cancellation timer" and whether to retract the EOA to the protective signal. The overlap cancellation model also supports other future "cancellation inputs" and has good compatibility. The cancellation efficiency of the first "cancellation input" is higher than that of the second "cancellation input".

[0060] After the RMU successfully cancels the overlap, it immediately starts the unlocking countdown. However, similarly, in the method of the overlap unlocking model, the "unlock timer" is often very long, resulting in low unlocking efficiency. The following describes a method to quickly end the unlocking countdown through the "unlock input" of the overlap unlocking model.

[0061] In addition, the result of canceling the overlap is that the EOA calculated by the RMU for the train retracts to the protective signal, aiming to limit the train's movement authorization and prevent it from entering the overlap range again. Then the RMU notifies the new EOA to the CC, which takes at most one maximum communication delay from the RMU to the CC. The CC feeds back the new status to the RMU based on the new EOA, which takes at most one maximum communication delay from the CC to the RMU. The sum of the above two times is the limit variable synchronization delay. This is the time that the first "unlock input" and the second "unlock input" in the overlap unlocking process must wait.

[0062] The scenario of the first "unlock input" is as Figure 4 shown. After the overlap is cancelled, the RMU waits for a period of limit variable synchronization delay and still receives the information that the train task is completed, then immediately ends the countdown of the "unlock timer" of the front overlap. At this time, the turnout within the overlap is unlocked and can be moved or assigned to other objects for use.

[0063] The scenario of the second "unlock input" is as Figure 5 shown. After the overlap is cancelled, the RMU waits for a period of limit variable synchronization delay and still only receives the information that the train has stopped stably and accurately without receiving the information that the task is completed. Then when the RMU judges that the head positioning is within the overlap release distance configured by the protective signal, it immediately ends the countdown of the "unlock timer" of the front overlap. At this time, the turnout within the overlap is unlocked and can be moved or assigned to other objects for use.

[0064] The scenario of the third "unlock input" is as Figure 6, after the Overlap is cancelled, if the RMU receives a new message from the CC indicating that its parking guarantee point has been withdrawn to the protection signal with the EOA, it immediately ends the countdown of the "unlock timer" for the front Overlap. At this time, the switches within the Overlap are unlocked and can be moved or assigned for use by other objects.

[0065] During the above process of unlocking the Overlap, the calculations made by the RMU using various information of the on-vehicle controller (CC) and itself are all for generating the "unlock input", and whether to immediately end the countdown of the "unlock timer" and whether to unlock the switches within the Overlap are output through the Overlap unlocking model. This model also supports other future "unlock inputs" and has good compatibility. Among the above three "unlock inputs", the third "unlock input" has the highest unlocking efficiency.

[0066] Embodiment 3

[0067] The electronic device of the present invention includes a central processing unit (CPU), which can perform various appropriate actions and processes according to computer program instructions stored in a read-only memory (ROM) or computer program instructions loaded from a storage unit into a random access memory (RAM). In the RAM, various programs and data required for device operation can also be stored. The CPU, ROM, and RAM are connected to each other through a bus. An input / output (I / O) interface is also connected to the bus.

[0068] Multiple components in the device are connected to the I / O interface, including: an input unit, such as a keyboard, a mouse, etc.; an output unit, such as various types of displays, speakers, etc.; a storage unit, such as a disk, an optical disc, etc.; and a communication unit, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit allows the device to exchange information / data with other devices through a computer network such as the Internet and / or various telecommunication networks.

[0069] The processing unit executes the various methods and processes described above. For example, in some embodiments, the method can be implemented as a computer software program, which is tangibly contained in a machine-readable medium, such as a storage unit. In some embodiments, part or all of the computer program can be loaded and / or installed onto the device via the ROM and / or the communication unit. When the computer program is loaded into the RAM and executed by the CPU, one or more steps of the method described above can be executed. Alternatively, in other embodiments, the CPU can be configured to execute the method by any other suitable means (for example, by means of firmware).

[0070] The functions described above in this document can be performed, at least in part, by one or more hardware logic components. For example, without limitation, exemplary types of hardware logic components that can be used include: Field Programmable Gate Arrays (FPGA), Application Specific Integrated Circuits (ASIC), Application Specific Standard Products (ASSP), System on a Chip (SOC), Complex Programmable Logic Devices (CPLD), and so on.

[0071] The program code for implementing the method of the present invention can be written in any combination of one or more programming languages. These program codes can be provided to a processor or controller of a general-purpose computer, a special-purpose computer, or other programmable data processing devices, such that when the program codes are executed by the processor or controller, the functions / operations specified in the flowchart and / or block diagram are implemented. The program code can be executed entirely on the machine, partially on the machine, executed partially on the machine and partially on a remote machine as an independent software package, or executed entirely on a remote machine or server.

[0072] In the context of the present invention, a machine-readable medium can be a tangible medium that can contain or store a program for use by or in connection 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. A machine-readable medium can include, but is 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 would 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.

[0073] As described above, the above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of various equivalent modifications or substitutions, and these modifications or substitutions should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A continuous protection unlocking method based on line resource management, characterized in that, The method includes a continuous protection cancellation process and a continuous protection unlocking process; The continuous protection cancellation process includes: constructing an Overlap cancellation model, which configures a "cancellation timer". When the countdown of the "cancellation timer" ends, the resource manager cancels the continuous protection and sends an authorization end point back to the protection signal to the train; The continuous protection unlocking process includes: constructing an Overlap unlocking model, which configures a "unlock timer"; after the continuous protection is cancelled, the countdown of the "unlock timer" starts. When the countdown of the "unlock timer" ends, if the track sections within the continuous protection range are all clear, the resource manager unlocks the turnouts within the continuous protection range.

2. The continuous protection unlocking method based on line resource management according to claim 1, wherein The "cancellation timer" ends after natural countdown or is ended prematurely by any "cancellation input".

3. The continuous protection unlocking method based on line resource management according to claim 2, wherein The "cancellation input" includes a first "cancellation input", specifically: if the train has stopped stably and sent a task completion message during the countdown of the "cancellation timer", the countdown of the "cancellation timer" ends directly.

4. A continuous protection unlocking method based on line resource management according to claim 2, characterized in that, The "cancellation input" includes a second "cancellation input", specifically: if the train has stopped stably and accurately but has not sent a task completion message during the countdown of the "cancellation timer", and if the resource manager determines that the train head positioning is within the Overlap release distance from the protection signal, the train releases the continuous protection and the countdown of the "cancellation timer" ends directly.

5. The continuous protection unlocking method based on line resource management according to claim 1, characterized in that The Overlap cancellation model is also configured with a trigger unlocking section, specifically: several track sections upstream of the continuous protection are configured as the trigger unlocking section.

6. The continuous protection unlocking method based on line resource management according to claim 5, wherein After the train occupies any one of the trigger unlocking sections, it stops stably at the stopping point in front of the continuous protection after at most the time of the "cancellation timer".

7. A continuous protection unlocking method based on line resource management according to claim 1, characterized in that The "unlock timer" ends after natural countdown or is triggered and ended prematurely by any "unlock input".

8. A continuous protection unlocking method based on line resource management according to claim 7, characterized in that, The "unlock input" includes a first "unlock input", specifically: if during the countdown of the "unlock timer", the time for one interaction between the resource manager and the train has passed, and the train has stopped stably and sent a task completion message to the resource manager, the countdown of the "unlock timer" ends directly.

9. A continuous protection unlocking method based on line resource management according to claim 7, characterized in that, The "unlock input" includes a second "unlock input", specifically: if during the countdown of the "unlock timer", the time for one interaction between the resource manager and the train has passed, and the train has stopped stably and accurately but has not sent a task completion message to the resource manager, and if the resource manager determines that the head positioning is within the Overlap release distance configured for the protection signal, the train releases the continuous protection and directly ends the countdown of the "unlock timer".

10. A continuous protection unlocking method based on line resource management according to claim 7, characterized in that The "unlock input" includes a third "unlock input", specifically: if during the countdown of the "unlock timer", the resource manager receives a message from the train that the parking guarantee point has been confirmed to have retreated to the protection signal, the countdown of the "unlock timer" ends immediately.

11. A continuous protection unlocking method based on line resource management according to claim 1, characterized in that, The described "unlock timer" ensures that the train can come to a complete stop within the configured "unlock timer" time at most, starting from the moment when the self-sustaining protection is cancelled.

12. A continuous protection unlocking method based on line resource management according to any one of claims 8 or 9, characterized in that The time for the interaction between the primary resource manager and the train information is the sum of the maximum communication delay from the resource manager to the on-vehicle controller and the maximum communication delay from the on-vehicle controller to the resource manager.

13. An electronic device, comprising a memory and a processor, where a computer program is stored on the memory, characterized in that, When the processor executes the program, it implements the method described in any one of claims 1 to 2.

14. 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 described in any one of claims 1 to 12.

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