Train continuation protection management method and device based on line resources and medium

Abstract

The invention relates to a train continuation protection management method and device based on line resources and a medium. The method comprises the steps that S1, a resource management unit RMU calculates a train dynamically associated with continuation protection; s2, a resource management unit RMU applies for available continuous protection resources for the associated train; and S3, the resource management unit RMU releases the continuous protection resources applied by the distributed train. Compared with the prior art, the method has the advantages that precise management of the continuous protection area is achieved, the system efficiency is improved, and the vehicle chasing density of the system can be improved.

Description

Technical Field

[0001] The present invention relates to a rail transit signal system, and in particular to a train continuation 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 recklessly advancing due to line conditions, insufficient braking performance or misoperation, which may lead to traffic accidents, a continuous protection approach is often added outside the approach.

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

[0004] Chinese patent publication number CN114368418A discloses a method for safe and rapid unlocking of a continuation protection route, which specifically discloses that a vehicle-mounted 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 continuation protection route. The purpose of this patent is to improve the unlocking efficiency of the continuation 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 method for triggering a continuation protection route based on a destination 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, CI sends an overlap locking request to the automatic train monitoring system ATS, and starts 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; judging 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 + zone controller + on-board controller to complete the management of continuation 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 continuation protection, and cannot use the train's location information to accurately trigger the continuation protection and use the train's location information to quickly release the continuation 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 continuation 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 for calculating the dynamic association of the continuous 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 crossed the continuation protection starting point;

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

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

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

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

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

[0020] From the application for continuation protection to the complete allocation of resources in the continuation protection area, the train does not slow down prematurely and can smoothly slow down and stop at the service stop point. The shortest time required, the train runs at the maximum allowable operating speed, and the shortest distance required, the continuation 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 to satisfy the associated trains in 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 need to meet the following conditions at the same time:

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

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

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

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

[0027] S25) The continuation protection zone 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 a preferred technical solution, if the available continuation protection resources simultaneously meet the conditions of S21) to S27), the RMU applies to the resource layer for line resources on the path. If the resource layer feedbacks 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 trains.

[0032] As a preferred technical solution, within the validity period of the timer, if the applied 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 for use by the allocated train, the allocation relationship between the train and the continuation protection is cleared, and the resource layer is 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 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 continuation protection resources will be allocated to the allocated train calculated in the current cycle.

[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 mark 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;

[0037] S32) the allocation train sends 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, there is provided an electronic device, comprising a memory and a processor, wherein a computer program is stored in the memory, and the method described above is implemented when the processor executes the program.

[0040] According to a third aspect of the present invention, there is provided a computer-readable storage medium having a computer program stored thereon, wherein the program implements the method described above when executed by a processor.

[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 the continuation protection resources based on the line resource allocation, which can accurately control the use granularity of the continuation protection resources, simplify the system architecture, and help reduce the system cost;

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

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

[0045] Figure 2 It is a schematic diagram of the continuation of the protection of the associated train of the present invention;

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

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

[0048] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work 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 under a resource management unit (RMU) system framework using train location information and an "automatic train protection" model, the method comprising:

[0050] Step A: The resource management unit RMU calculates the trains dynamically associated with the continuation protection

[0051] Step B: The resource management unit RMU applies for available continuation 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 dynamically associated with the continuation protection. Figure 2 As shown, first, the RMU dynamically queries the first "train automatic protection" envelope upstream of the branch where the continuation protection is calculated, and searches for the first "train automatic protection" whose "train automatic protection" envelope endpoint does not cross the search starting point along the reverse direction of the continuation protection, starting from the continuation protection starting point. Since the upstream turnout is located in the positioning, the search results in "train automatic protection 1". Then, if the minimum head safety positioning position of the train in the position message of train 1 associated with "train automatic protection 1" is located upstream of the continuation protection starting point in the search direction, and train 1 enters the continuation protection triggering distance range, and the head direction points to the continuation protection area. Finally, if train 1 has obtained the resources between the minimum head safety positioning position and the continuation protection starting point, and the direction of the resource authorization use is pointing to the continuation protection area. If the continuation protection is not activated and the above conditions are met, then the RMU will associate the continuation protection with the train and execute step B.

[0054] When modeling the RMU internally, use the "train automatic protection" sequence on the branch to eliminate the problem of inaccurate judgment of the train sequence due to asynchronous position messages between trains. Especially in the scenario of high-speed train operation, when trains are closely tracking, due to asynchronous train position messages, the position reported by the message may be inconsistent with the actual front and back relationship of the train. Query the first "train automatic protection" upstream of the continuation protection, that is, get the first train upstream.

[0055] The trigger distance configuration of the train's continuation protection takes into account the performance of the train, such as braking response time, braking deceleration, braking curve, etc. From the application of continuation protection to the complete allocation of resources in the continuation protection area, the main consideration is the time it takes for the turnout to be in place. The shortest time required for the train to smoothly slow down and stop at the service stop point without slowing down in advance, during which the train travels at the maximum allowable operating speed, the shortest distance required, the trigger configuration distance of the train's continuation protection is greater than the shortest distance to ensure the minimum requirement for the train to smoothly enter the station and stop accurately.

[0056] Step B, when applying for available continuation protection resources for the associated train, poll and query the available continuation protection paths in the static configuration 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 turnout 1 is in position and turnout 2 is not locked and can be freely operated, there is a train in the side impact protection area 1 of turnout 1 in reverse position. The turnout section is occupied and the "train automatic protection" envelope associated with the train covers the turnout movable area. The turnout will be passively locked and the turnout 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 the cross protection area 1. The cross protection area 2 calculated by the upper module is in a restricted state, which prohibits the upper module from entering the cross protection area 2 when calculating the movement authorization for the train. The cross protection area 2 intersects with path 1. Therefore, path 1 is not available, 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 applying for resources are opposite. For example, if the continuation protection in the DN direction has been 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 for applying for UP direction resources is configured for continuation protection. There is a train downstream of this path that has obtained DN direction line resources. The line resources include: section resources, turnout resources, side impact protection resources, cross protection resources, etc. The line resource direction obtained by the train is opposite to the direction of the resources applied for continuation protection, and there is an intersection with the continuation protection area. Therefore, the resources on the continuation protection path are not available for the continuation protection. If the continuation protection is authorized to use the applied UP direction line resources, hostility will be generated. From the perspective of resources, there is a risk of head-on collision. Therefore, path 1 is unavailable and no resources are applied to the resource layer for the continuation protection.

[0061] The associated restrictive pair on the line is not activated. This is designed to improve the scalability of the system. The extensible static configuration is used to associate the elements that may be defined as resource restrictions for the current continuation protection application in the future, which are not yet identified, or elements that are not mandatory to check according to the project configuration, with the query object when applying for continuation protection resources. For example, if element X is located in the continuation protection area, the RMU calculates the status of element X and writes it into the query array. When applying for continuation protection, the status of element X is read according to the position information of the query array of element X statically configured to the continuation protection, and whether the element X 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 resources of the extended protection area to the associated trains

[0066] After receiving the application for the continuation protection resource, the resource layer queries whether there is hostility from the perspective of the resource element to determine whether the current application can succeed; or if there is no hostility but it needs to wait for other applicants to release the resource element before it can apply for the resource element, it determines whether to immediately allocate the element to the train allocated by the continuation protection. If within the validity period of the timer, the applied continuation protection resources have been allocated and authorized for use by the train, including section resources, turnout resources, side impact protection resources, crossing protection resources, etc., then the continuation protection is locked, allowing the upper module to use the continuation protection area when calculating the movement authorization for the train, and stop setting the timer.

[0067] When the timer times out, if the requested continuation protection resources are not fully allocated or not fully authorized for use by the allocated train, the allocation relationship between the train and the continuation protection is cleared, and the resource layer is 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 setting of the timer time is mainly to wait for the switch to be in place. It is necessary to consider the performance of the line switches, the number of switchboards in the continuous protection area, and the power requirements of the power supply panel for the number of switch staggered operations, etc. The timing time needs to meet the worst case scenario, and the switch can all be in place. That is, if the switch cannot be moved in place, it must be due to a switch failure. Therefore, the resources can be recycled after the timer times out.

[0069] RMU will periodically calculate the allocated train for the upstream of the continuation protection. 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 cancelled, and the continuation protection resources will be allocated to the allocated train calculated in the current cycle. 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 bit 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 step A and step B to the default values.

[0071] If the mission of Train 1 is changed, such as when 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 step A and step B to default values.

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

[0073] The embodiment of the present invention also 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] Multiple components in the device are connected to the I / O interface, including: input units, such as keyboards, mice, etc.; output units, such as various types of displays, speakers, etc.; storage units, such as disks, optical disks, etc.; and communication units, such as network cards, modems, wireless communication transceivers, etc. The communication unit allows the device to exchange information / data with other devices through 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 method of the present invention. For example, in some embodiments, the method of the present invention 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 method of the present invention described above can be performed. Alternatively, in other embodiments, the CPU can be configured to perform the method of the present invention 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, 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 chips (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. 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 device, so that the program code, when executed by the processor or controller, enables the functions / operations specified in the flow chart and / or block diagram to be implemented. The program code can be executed entirely on the machine, partially on the machine, partially on the machine as a stand-alone software package and partially on a remote machine, or entirely on a remote machine or server.

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

[0079] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A train continuation 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.

2. According to the method for managing train continuity protection based on line resources of claim 1, it is characterized in that: The trains for calculating the dynamic association of 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 completely crossed the continuation protection starting point; S12) In the train position message, the minimum head safety positioning position of the train has not yet passed the starting point of the continuous protection; S13) The train has obtained the line resources between the minimum head safety positioning position and the starting point of the continuation protection, and the direction of the resource authorization is toward the continuation protection area; S14) the distance from the minimum head safety positioning position of the train to the continuation protection starting point is less than the continuation protection triggering distance associated with the train, and the head direction of the train points to the continuation protection area; S15) The continuation protection area has not yet been activated.

3. According to the method for managing train continuity protection based on line resources of claim 2, it is characterized in that: The continuation protection triggering distance in S14 is: From the application for continuation protection to the complete allocation of resources in the continuation protection area, the train does not slow down prematurely and can smoothly slow down and stop at the service stop point. The shortest time required, the train runs at the maximum allowable operating speed, and the shortest distance required, the continuation protection trigger distance is greater than this shortest distance.

4. According to the method for managing train continuity protection based on line resources of claim 1, it is characterized in that: In step S2, the RMU applies for line resources within the continuation protection area to satisfy the associated train in step S1, and sequentially queries available continuation protection paths according to the paths configured by the static configuration data.

5. The train continuation protection management method based on line resources according to claim 1 is characterized in that: The available continuation protection resources in step S2 must meet the following conditions at the same time: S21) The turnout on the path is locked at the position specified by the path, or the turnout is not prohibited from being operated; S22) The section resources on the path do not have dual occupancy of secondary detection equipment and "Automatic Train Protection" envelope; S23) The state of the side impact protection zone on the path is in the allowed state; S24) The state of the cross protection zone on the path is allowed; S25) The continuation protection zone hostile to the path is not activated; S26) other restrictive objects associated with the path are not activated; S27) The line resources on the path are all available.

6. A train continuation protection management method based on line resources according to claim 5, characterized in that: The line resources in S27) include section resources, turnout resources, side impact protection resources, and intersection protection resources.

7. A train continuation protection management method based on line resources according to claim 5, 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 feedbacks 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 trains.

8. A train continuation protection management method based on line resources according to claim 7, 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 for use by the allocated train, the allocation relationship between the train and the continuation protection is cleared, and the resource layer is requested to release the previously requested continuation protection area resources.

9. A train continuation protection management method based on line resources according to claim 7, 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 with the continuation protection resources.

10. The train continuation protection management method based on line resources according to claim 1, characterized in that: 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: S31) The assigned train sends a mark 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 allocation train sends a continuation protection resource release flag; S33) The "train automatic protection" of the assigned train completely crosses the continuation protection area.

11. 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 10 is implemented.

12. 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 10 is implemented.

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