Train continuity protection management method, equipment and media based on line resources

Abstract

The present invention relates to a method, device, and medium for managing train continuity protection based on line resources. The method comprises: step S1, in which a resource management unit (RMU) calculates trains dynamically associated with continuity protection; step S2, in which the RMU applies for available continuity protection resources for the associated trains; and step S3, in which the RMU releases the continuity protection resources requested by the allocated train. Compared with existing technologies, the present invention achieves precise management of the continuity protection area, improves system efficiency, and contributes to increasing the system's train chasing density.

Description

Technical Field

[0001] The present invention relates to a rail transit signal system, and in particular to a train continuity protection management method, equipment and medium based on line resources. Background Art

[0002] In order to meet the requirements of parking safety and parking accuracy, and to prevent trains from advancing recklessly due to line conditions, insufficient braking performance or misoperation, which may lead to traffic accidents, extended protection routes are often added outside the routes.

[0003] After searching, the following methods are commonly used for setting up continuous protection routes:

[0004] Chinese patent publication number CN114368418A discloses a method for safely and quickly unlocking a continued protection route. Specifically, it discloses that an on-board controller calculates in real time whether a train can accurately stop at a designated stop point and sends the information to a regional controller. The regional controller confirms the unlocking status information and sends it to the interlocking system. The interlocking system adopts different delay strategies according to the timing of the received unlocking status information to unlock the continued protection route. The purpose of this patent is to improve the unlocking efficiency of the continued protection route, reduce the unlocking waiting time, and effectively shorten the train parking time and tracking interval.

[0005] At the same time, Chinese patent publication number CN103264714A discloses a destination-based continuation protection route triggering method in an urban rail transit system, which specifically discloses setting a default continuation protection route overlap and a preset time limit t; judging whether the train enters the overlap trigger section, judging whether the main route is established, judging whether the overlap is established, and sending an overlap locking request to the automatic train monitoring system ATS, and starting a timer at the same time; after receiving the request, ATS searches for the destination information, and if the destination information exists, calculates the overlap locking direction and replies to CI; judges whether CI receives the overlap locking information, and if not, returns to the default overlap position and turns; the purpose of this patent is to prevent the train from waiting for the overlap unlocking time. In the backup mode, the train does not have to wait for the overlap unlocking time to directly set the subsequent route and perform corresponding operations, which effectively improves the operational efficiency and system availability.

[0006] At the same time, the existing technology adopts the architecture of interlocking + regional controller + on-board controller to complete the management of continuous protection, which has a complex system architecture and high cost. In addition, the interlocking system in the existing technology uses secondary detection equipment sections to manage continuous protection, and cannot use the train's position information to accurately trigger the continuous protection and use the train's position information to quickly release the continuous protection area resources. Summary of the Invention

[0007] The purpose of the present invention is to overcome the defects of the above-mentioned prior art and provide a train continuity protection management method, equipment and medium based on line resources.

[0008] The purpose of the present invention can be achieved by the following technical solutions:

[0009] According to a first aspect of the present invention, a train continuity protection management method based on line resources is provided, the method comprising:

[0010] Step S1, the resource management unit RMU calculates the trains dynamically associated with the continuation protection;

[0011] Step S2: The resource management unit RMU applies for available continuation protection resources for the associated train;

[0012] Step S3: The resource management unit RMU releases the continuation protection resources requested by the allocated train.

[0013] As a preferred technical solution, the trains dynamically associated with the calculation of the continued protection in step S1 must meet the following conditions at the same time:

[0014] S11) The first train associated with "train automatic protection" upstream of the branch where the continuation protection is located that has not completely passed the continuation protection starting point;

[0015] S12) In the train position message, the minimum locomotive safety positioning position of the train has not yet passed the starting point of the continuous protection;

[0016] S13) The train has obtained the track resources between the minimum head safety positioning position and the start point of the continuous protection, and the direction of the resource authorization is toward the continuous protection area;

[0017] S14) The distance from the minimum locomotive safety positioning position of the train to the starting point of the continuation protection is less than the continuation protection trigger distance associated with the train, and the locomotive direction of the train points to the continuation protection area;

[0018] S15) The continuation protection area has not been activated.

[0019] As a preferred technical solution, the continuous protection trigger distance in S14 is:

[0020] From applying for continued protection to the complete allocation of resources in the continued protection area, the shortest time required to ensure that the train does not slow down prematurely and can smoothly slow down and stop at the service stop point is met. The train travels at the maximum allowable operating speed and the shortest distance required, and the continued protection trigger distance is greater than this shortest distance.

[0021] As a preferred technical solution, in step S2, the RMU applies for line resources within the continuation protection area for the associated trains that meet the requirements of step S1, and sequentially queries available continuation protection paths according to the paths configured by the static configuration data.

[0022] As a preferred technical solution, the available continuation protection resources in step S2 must simultaneously meet the following conditions:

[0023] S21) The switch on the path is locked at the position specified by the path, or the switch is not prohibited from operation;

[0024] S22) The section resources on the path do not have dual occupancy by the secondary detection equipment and the “Automatic Train Protection” envelope;

[0025] S23) The state of the side impact protection zone on the path is allowed;

[0026] S24) The state of the cross protection zone on the path is allowed;

[0027] S25) The continuation protection zone that is hostile to the path is not activated;

[0028] S26) other restrictive objects associated with the path are not activated;

[0029] S27) The line resources on the path are all available.

[0030] As a preferred technical solution, the line resources in S27) include section resources, turnout resources, side impact protection resources, and intersection protection resources.

[0031] As an optimal technical solution, if the available continuation protection resources meet the conditions of S21) to S27) at the same time, the RMU applies to the resource layer for line resources on the path. If the resource layer feedback indicates that the resource application is successful, the continuation protection area is set to an activated state, and the continuation protection setting timer is started at the same time, and the continuation protection area resources are allocated to the associated train.

[0032] As a preferred technical solution, within the validity period of the timer, if the requested continuation protection resources have been allocated and authorized for use by the allocated train, the continuation protection is locked, the continuation protection area is allowed to be used when calculating the movement authorization for the train, and the timer is stopped;

[0033] When the timer times out, if the requested continuation protection resources are not fully allocated or not fully authorized to the allocated train, the allocation relationship between the train and the continuation protection will be cleared, and the resource layer will be requested to release the previously requested continuation protection area resources.

[0034] As an optimal technical solution, the RMU will periodically calculate the allocated train for the continuation protection upstream. If the allocated train calculated in the current cycle is different from the value in the previous cycle, the allocation relationship between the continuation protection resources and the allocated train in the previous cycle will be released, and the allocated train calculated in the current cycle will be allocated to the continuation protection resources.

[0035] As a preferred technical solution, in step S3, if any of the following conditions is met, the RMU will apply to the resource layer to release all continuation protection resources:

[0036] S31) The assigned train sends a flag indicating that the continued protection resource has been used up through a position message, and the train's smallest locomotive is safely positioned in the section where the service stop is located;

[0037] S32) Allocating the train to send a continuation protection resource release flag;

[0038] S33) The "train automatic protection" of the assigned train completely crosses the continuation protection area.

[0039] According to a second aspect of the present invention, an electronic device is provided, comprising a memory and a processor, wherein a computer program is stored in the memory, and the processor implements the method when executing the program.

[0040] According to a third aspect of the present invention, a computer-readable storage medium is provided, on which a computer program is stored, and when the program is executed by a processor, the method described above is implemented.

[0041] Compared with the prior art, the present invention has the following advantages:

[0042] 1) The present invention only requires the RMU + on-board controller to complete the application, use, and release of continuation protection resources based on line resource allocation, which can accurately control the granularity of continuation protection resource use, simplify the system architecture, and help reduce system costs;

[0043] 2) The present invention uses the train's location information and the "train automatic protection" model to achieve accurate management of the extended protection area, safe release, improve system efficiency, and help increase the system's vehicle chasing density. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 is a flow chart of the method of the present invention;

[0045] Figure 2 A schematic diagram of the present invention continuing to protect associated trains;

[0046] Figure 3 This is a schematic diagram of the protection path selection for the present invention;

[0047] Figure 4This is a schematic diagram of the release model of the protection resources of the present invention. DETAILED DESCRIPTION

[0048] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0049] like Figure 1 As shown, a dynamic management method for continuous protection based on line resources is implemented using train location information and an "automatic train protection" model under the framework of a resource management unit (RMU) system. The method includes:

[0050] Step A: Resource Management Unit (RMU) calculates the trains dynamically associated with the continuation protection

[0051] Step B: The resource management unit RMU applies for available continuous protection resources for the associated train;

[0052] Step C: The resource management unit RMU releases the continuation protection resources requested by the allocated train

[0053] Step A, calculate the trains that are dynamically associated with the continued protection. Figure 2 As shown, the RMU first dynamically queries the first "Train Automatic Protection" envelope upstream of the branch where the calculated continuation protection is located. Starting from the continuation protection starting point, it searches for the first "Train Automatic Protection" whose "Train Automatic Protection" envelope endpoint does not cross the search starting point, in the reverse direction of the continuation protection. Since the upstream switch is located, "Train Automatic Protection 1" is found. Then, if the position message of Train 1 associated with "Train Automatic Protection 1" indicates that the train's minimum head safety position is upstream of the continuation protection starting point in the search direction, and Train 1 is within the continuation protection trigger range, and the head direction is pointing toward the continuation protection area, then the RMU determines that Train 1 has obtained resources between the minimum head safety position and the continuation protection starting point, and the direction of the resource authorization is pointing toward the continuation protection area. If the continuation protection is not activated and all the above conditions are met, the RMU associates the continuation protection with the train and executes step B.

[0054] When modeling the RMU internally, use the "Train Automatic Protection" sequence on branches to eliminate the problem of position message asynchrony between trains, which can lead to inaccurate train sequence determination. This is especially true in high-speed trains, where trains are closely tracking each other. Asynchronous train position messages can cause inconsistencies between reported positions and the actual train sequence. Querying the first "Train Automatic Protection" upstream of the continuous protection function returns the first train upstream.

[0055] The trigger distance configuration for a train's extended protection takes into account train performance, such as braking response time, braking deceleration, and braking curve. From the time the extended protection is requested until resources within the extended protection area are fully allocated, the primary consideration is the time it takes for the turnout to be in place. The minimum distance required for a train to smoothly decelerate and stop at a service stop without premature deceleration is the minimum distance required for the train to travel at its maximum permitted operating speed. The trigger distance for the train's extended protection configuration must be greater than this minimum distance to ensure the minimum requirement for a train to smoothly and accurately enter a station.

[0056] Step B: When applying for available continuation protection resources for the associated train, poll and query the available continuation protection paths in the statically configured paths:

[0057] Scenario 1, such as Figure 3 As shown in (1), three continuous protection paths are statically configured with the priority of path 1 > path 2 > path 3. Assuming that switch 1 is in the fixed position and switch 2 is not locked and can be freely operated, there is a train in the side impact protection area 1 of switch 1 in the reverse position. The switch section is occupied and the "train automatic protection" envelope associated with the train covers the switch movable area. The switch will be passively locked and the switch operation is prohibited. Therefore, path 1 is unavailable. If the area occupied by the section and the "train automatic protection" envelope covers path 1 at this time, path 1 will also be unavailable. Since there is a train on the side impact protection area 1, the side impact protection area 2 calculated by the upper module will become restricted, resulting in path 2 being unavailable. There are no restrictive elements on path 3, and the line resources on the path are all available. Therefore, path 3 is selected as the continuous protection line resource applied to the resource layer.

[0058] Scenario 2, such as Figure 3 As shown in (2), two continuous protection paths are statically configured, with the priority of path 1 > path 2. There is a train in cross protection area 1. The cross protection area 2 calculated by the upper module is in a restricted state, prohibiting the upper module from entering cross protection area 2 when calculating movement authorization for the train. Cross protection area 2 intersects path 1, so path 1 is unavailable and path 2 is selected.

[0059] Scenario 3, such as Figure 3As shown in (3), only one path 1 for applying for UP direction resources is configured for continuation protection. This path intersects with other continuation protections, and the directions of resource application are opposite. For example, if the continuation protection in the DN direction is activated, path 1 is unavailable, and no resources are applied for from the resource layer for this continuation protection.

[0060] Scenario 4, such as Figure 3 As shown in (4), only one path 1 is configured for applying for UP direction resources for continuation protection. Downstream of this path, there is a train that has obtained DN direction line resources. Line resources include: section resources, turnout resources, side impact protection resources, and cross protection resources. The line resources obtained by the train are opposite to the direction of the resources applied for by the continuation protection, and there is an intersection with the continuation protection area. Therefore, the resources on the continuation protection path are unavailable for this continuation protection. If the continuation protection is authorized to use the applied UP direction line resources, it will generate hostility. From the perspective of resources, there is a risk of head-on collision. Therefore, path 1 is unavailable, and no resources are applied for from the resource layer for this continuation protection.

[0061] The associated restrictive pair on the line is not activated. This is designed to enhance system scalability. Extensible static configuration is used to associate currently unidentified elements, which may be defined as resource restrictions for the current continuation protection request, or elements that are not mandatory to check based on project configuration, with the query objects used during continuation protection resource requests. For example, if element X is within the continuation protection area, the RMU calculates the status of element X and writes it to the query array. During continuation protection, the status of element X is read based on the location information in the query array statically configured for element X, to determine whether it is in a restricted state.

[0062] If a continuation protection path is available, the RMU will request resources on the path from the resource layer. If the resource layer responds that the resource request is successful, then:

[0063] 1. Set the continuation protection area to active state.

[0064] 2. Start the continuation protection setting timer.

[0065] 3. Allocate the extended protection area resources to the associated trains

[0066] After receiving a request for a continuation protection resource, the resource layer checks whether there is a hostile party from the perspective of the resource element to determine whether the current request can succeed; or if there is no hostile party but it needs to wait for other applicants to release the resource element before it can apply for the resource element, it will decide whether to immediately allocate the element to the train allocated for the continuation protection. If, within the validity period of the timer, all the requested continuation protection resources have been allocated and authorized for use by the train, including section resources, turnout resources, side impact protection resources, and crossing protection resources, the continuation protection is locked, allowing the upper module to use the continuation protection area when calculating the movement authorization for the train, and the timer is stopped.

[0067] When the timer times out, if the requested continuation protection resources are not fully allocated or not fully authorized to the allocated train, the allocation relationship between the train and the continuation protection will be cleared, and the resource layer will be requested to release the previously requested continuation protection area resources.

[0068] The allocation of resources to authorized use mainly considers the time required for switch operation. The timer is set mainly to wait for the switch to be in place. It is necessary to consider the performance of the line switches, the number of switches in the continuous protection area, and the power requirements of the power panel for the number of switch staggered operations. The timing time needs to meet the worst case scenario, and the switches can all be moved into place. That is, if the switch cannot be moved into place, it must be due to a switch failure. Therefore, the resources can be recycled after the timer expires.

[0069] RMU will periodically calculate the assigned train for the upstream of the continuation protection. If the assigned train calculated in the current cycle is different from the value in the previous cycle, the allocation relationship between the continuation protection resource and the assigned train in the previous cycle will be cancelled, and the assigned train calculated in the current cycle will be allocated to the continuation protection resource. Figure 2 As shown, the current continuation protection has been assigned to Train 1. If the upstream switch is turned from the positioning position to the reverse position, the first "train automatic protection" queried upstream is "train automatic protection 2", and Train 2 meets the above allocation conditions, then the allocation relationship with Train 1 will be released and the continuation protection will be assigned to Train 2.

[0070] Step C: Release the continuation protection resources. Figure 4 As shown in (a), when the flag indicating that the continuation protection resources have been used up in the position report message of train 1 is true, the RMU system checks that the minimum head safety position of train 1 is located in the section where the upstream service stop point of the continuation protection is located, then the RMU will apply to the resource layer to release all continuation protection resources and set the records involved in steps A and B to default values.

[0071] If the mission of train 1 changes, for example, it needs to turn around before using the continuation protection stop, it will actively send the continuation protection resource release flag, or change the stop at the service stop point to pass through the continuation protection area, that is, train 1 has obtained the downstream section resources of the stop service point. Figure 4 As shown in (b), when the tail boundary of "Train Automatic Protection 1" associated with Train 1 crosses the end point of continuation protection, the RMU will apply to the resource layer to release all continuation protection resources and set the records involved in steps A and B to default values.

[0072] The above is an introduction to the method embodiment. The following further illustrates the solution of the present invention through embodiments of electronic devices and storage media.

[0073] An embodiment of the present invention further provides an electronic device including 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 via a bus. An input / output (I / O) interface is also connected to the bus.

[0074] Many components in a device are connected to the I / O interface, including: input units, such as a keyboard and mouse; output units, such as various types of displays and speakers; storage units, such as magnetic disks and optical disks; and communication units, such as network cards, modems, and wireless communication transceivers. The communication unit allows the device to exchange information / data with other devices via computer networks such as the Internet and / or various telecommunication networks.

[0075] The processing unit performs the various methods and processes described above, such as the inventive method. For example, in some embodiments, the inventive 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 on the device via a ROM and / or a communication unit. When the computer program is loaded into RAM and executed by the CPU, one or more steps of the inventive method described above can be performed. Alternatively, in other embodiments, the CPU can be configured to perform the inventive method by any other appropriate means (e.g., by means of firmware).

[0076] The functions described above herein may be performed, at least in part, by one or more hardware logic components. For example, and without limitation, exemplary types of hardware logic components that may be used include: field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), systems on chip (SOCs), complex programmable logic devices (CPLDs), and the like.

[0077] The program code for implementing the method of the present invention can be written in any combination of one or more programming languages. Such program code can be provided to a processor or controller of a general-purpose computer, a special-purpose computer, or other programmable data processing device so that when the program code is executed by the processor or controller, the functions / operations specified in the flow chart and / or block diagram are implemented. The program code can be executed entirely on the machine, partially on the machine, as a stand-alone software package, partially on the machine and partially on a remote machine, or entirely on a remote machine or server.

[0078] In the context of the present invention, machine-readable medium can be a tangible medium that can contain or store a program for use with an instruction execution system, device or equipment or used in combination with an instruction execution system, device or equipment. Machine-readable medium can be a machine-readable signal medium or a machine-readable storage medium. Machine-readable medium can include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared or semiconductor systems, devices or equipment, or any suitable combination of the foregoing. More specific examples of machine-readable storage media can include electrical connections based on one or more lines, portable computer disks, hard disks, random access memories (RAM), read-only memories (ROM), erasable programmable read-only memories (EPROM or flash memory), optical fibers, portable compact disk read-only memories (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination of the foregoing.

[0079] 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 such modifications or substitutions are intended to be within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope of protection of the claims.

Claims

1. A train continuity protection management method based on line resources, characterized in that: The method includes: Step S1, the resource management unit RMU calculates the trains dynamically associated with the continuation protection; Step S2: The resource management unit RMU applies for available continuation protection resources for the associated train; Step S3: The resource management unit RMU releases the continuation protection resources requested by the allocated train; The trains that are dynamically associated with the continuous protection in step S1 must meet the following conditions at the same time: S11) The first train associated with "Train Automatic Protection" upstream of the branch where the continuation protection is located that has not yet completely passed the continuation protection starting point; S12) In the train position message, the train's minimum head safety positioning position has not yet passed the starting point of the continuous protection; S13) The train has obtained track resources between the minimum head safety positioning position and the start point of the extended protection, and the direction of the authorized use of the resources is toward the extended protection area; S14) The distance from the train's minimum head safety positioning position to the continuation protection starting point is less than the train-associated continuation protection trigger distance, and the train's head direction points to the continuation protection area; S15) The continuation protection area has not been activated; The available continuation protection resources in step S2 must meet the following conditions at the same time: S21) The switch on the route is locked in the position specified by the route, or the switch is not prohibited from operation; S22) The section resources on the route do not have dual occupancy by secondary detection equipment and the "Automatic Train Protection" envelope; S23) The status of the side impact protection zone on the path is allowed; S24) The state of the cross protection zone on the path is allowed; S25) The continuation protection area hostile to the path is not activated; S26) Other restrictive objects associated with the path are not activated; S27) All line resources on the path are available.

2. A train continuity protection management method based on line resources according to claim 1, characterized in that: The trigger distance of the continuation protection in S14 is: From the time the extended protection is applied to the time the resources in the extended protection area are fully allocated, the shortest time required for the train to smoothly slow down and stop at the service stop point without slowing down prematurely, the shortest distance required for the train to travel at the maximum allowable operating speed, and the extended protection trigger distance is greater than this shortest distance.

3. A train continuity protection management method based on line resources according to claim 1, characterized in that: In step S2, the RMU applies for line resources within the continuation protection area for the associated trains satisfying step S1, and sequentially queries available continuation protection paths according to the paths configured by the static configuration data.

4. A train continuity protection management method based on line resources according to claim 1, characterized in that: The line resources in S27) include section resources, turnout resources, side impact protection resources, and intersection protection resources.

5. The train continuity protection management method based on line resources according to claim 1 is characterized in that: If the available continuation protection resources meet the conditions of S21) to S27) at the same time, the RMU applies to the resource layer for line resources on the path. If the resource layer feedback indicates that the resource application is successful, the applied continuation protection area is set to the activated state, and the continuation protection setting timer is started at the same time, and the continuation protection area resources are allocated to the associated train.

6. A train continuity protection management method based on line resources according to claim 5, characterized in that: During the validity period of the timer, if the requested continuation protection resources have been allocated and authorized for use by the allocated train, the continuation protection is locked, the continuation protection area is allowed to be used when calculating the movement authorization for the train, and the timer is stopped; When the timer times out, if the requested continuation protection resources are not fully allocated or not fully authorized to the allocated train, the allocation relationship between the train and the continuation protection will be cleared, and the resource layer will be requested to release the previously requested continuation protection area resources.

7. A train continuity protection management method based on line resources according to claim 5, characterized in that: The RMU will periodically calculate the allocated train for the continuation protection upstream. If the allocated train calculated in the current cycle is different from the value in the previous cycle, the allocation relationship between the continuation protection resources and the allocated train in the previous cycle will be released, and the allocated train calculated in the current cycle will be allocated to the continuation protection resources.

8. The train continuity protection management method based on line resources according to claim 1 is characterized in that: In step S3, if any of the following conditions is met, the RMU will request the resource layer to release all continuation protection resources: S31) The assigned train sends a flag indicating that the continuation protection resource has been used up through a position message, and the train's smallest locomotive is safely positioned in the section where the service stop is located; S32) The assigned train sends a continuation protection resource release flag; S33) The "train automatic protection" of the assigned train completely crosses the continuation protection area.

9. An electronic device comprising a memory and a processor, wherein a computer program is stored in the memory, wherein: When the processor executes the program, the method according to any one of claims 1 to 8 is implemented.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the method according to any one of claims 1 to 8 is implemented.

Images