Train retreating management method based on route resources

Abstract

The invention discloses a train retreating management method based on line resources, and relates to the technical field of train operation control. The method comprises the steps that line resources are set in an RMU system, the RMU calculates whether a retreating request sent by a retreating train is effective or not, a line resource application is provided for the retreating train with the effective retreating request, resource allocation is carried out, and when line resource allocation succeeds and a turnout is locked to an expected position, the retreating request is sent to the retreating train. The RMU calculates a mobile authority point of the degeneration of the degeneration train according to the route information and the information of other trains, and sends the mobile authority point to the degeneration train, and the degeneration train performs degeneration operation; and releasing the line resources after the retreating is finished. According to the method and the system, the original train retreating authorization jointly managed by ZC and CI is simplified into RMU independent management, so that the process is effectively simplified, the cost is reduced, and the overall operation efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of train operation control, and more specifically to a train regression management method based on line resources. Background Art

[0002] During the operation of the train, it may be necessary to reverse the operation. For example, when entering the station to perform a marked stop, there will be an over-mark phenomenon. When the train is manned, the driver will operate the reverse reverse operation to re-mark. When the over-mark does not exceed a certain distance, the unmanned train can use the reverse jump function to reverse. This kind of traditional method is only applicable to pre-set static areas, with limited flexibility of use, and is not suitable for train retreat management in dynamic locations and dynamic distances.

[0003] For example, the invention patent application publication number is CN111845854A, the application publication date is October 30, 2020, and the name is "Reversal protection method and system for trains based on communication". The invention patent application provides a reverse protection method and system for trains based on communication, which is used to overcome the problem in the related art that the driver's control of the train over the mark is very likely to cause the risk of side collision when the train is reversed. Among them, the reverse protection method includes: in the CM mode, when ATP determines that the current train stops over the mark and meets the preset reverse range, it sends a first application information to ZC; after ZC receives the first application information, when it determines that the current line meets the preset line conditions, it sends a second application information to CI; after CI receives the second application information, when it determines that the rear section of the current train meets the preset locking conditions, it returns a first permission information to ZC; the first permission information triggers ZC to return the second permission information to ATP; after ATP determines that the traction brake handle is placed in the traction position and the direction handle is backward, and receives the second permission information, it generates a prompt information that triggers the human-machine interface MMI to prompt the driver of the current train to reverse.

[0004] Traditional CI provides locking and authorized operating ranges for trains based on route units. When a train needs to retreat to an unlocked area, CI's management of re-locking the dynamically demarcated area is complex and inefficient. Summary of the invention

[0005] In order to overcome the defects and shortcomings in the above-mentioned prior art, the present invention provides a train retreat management method based on line resources. The purpose of the present invention is to solve the problem that the traditional CI has complex and inefficient management of re-locking of dynamically demarcated areas. The present invention proposes a train retreat management method based on line resources based on the system architecture of CI and ZC integration (RMU), including setting line resources, calculating whether the retreat request is valid and line resource application, line resource management, retreat authorization calculation and releasing line resources at the end of retreat. The present invention simplifies the train retreat authorization originally managed by ZC and CI to be managed by RMU alone, which effectively simplifies the process, reduces costs and improves overall operating efficiency.

[0006] In order to solve the above problems existing in the prior art, the present invention is implemented through the following technical solutions.

[0007] The present invention provides a train regression management method based on line resources, and the train regression management method comprises the following steps: S1. Setting line resources in the RMU system, wherein the line resources include section resources and turnout resources, wherein the types of section resource allocation include three types: train running path, side impact protection area and crossing protection area, and the turnout resources are turnouts of the line; S2. After the reversing train sends a reversing request to the RMU, the RMU determines the validity of the reversing request and applies for reversing resources for the reversing train whose reversing request is valid; S3, RMU is responsible for managing the application and allocation of line resources, and providing relevant resource status information for calculating signal opening; RMU compares the allocation information of each resource in the resource application with the existing resource allocation information progress to determine whether there is a hostile relationship; if there is no hostile relationship, the resource application is determined to be successful, and RMU allocates these resources to the retreating train and records the allocation information on the resources; S4. When the line resources are allocated successfully and the turnout is locked to the expected position, the RMU calculates the movement authorization point of the retreating train based on the line information and the information of other trains, and sends the movement authorization point to the retreating train, and the retreating train performs the retreat operation; S5. After the retreating train completes the retreating operation, the RMU releases the line resources of the retreating train.

[0008] Further preferably, the segment resource is defined as an interval range on a segment, which is described by a triple of "segment index, interval minimum coordinate, interval maximum coordinate".

[0009] Further preferably, the train running path describes the line area where the train needs authorization to run, and is composed of multiple section resources. When resources are allocated to the train as a running path, the allocation information recorded on the resources is LockUp or LockDown, representing that the train's running direction is up and down, respectively.

[0010] Further preferably, the side impact protection zone represents a protection area for protecting against side collisions of trains at switches, and the positioning and reverse positions of the switch are respectively associated with side impact protection zones, and the positioning side impact protection zone and the reverse position side impact protection zone are hostile to each other and cannot be used at the same time; when a train needs to enter the side impact protection zone of the switch, both the side impact protection zone and its hostile side impact protection zone need to be allocated to the train, wherein the side impact protection zone on the train's running path is set to have its allocation information set to LockUse, indicating that the train is allowed to enter; and the hostile side impact protection zone is set to have its allocation information set to LockForbidUse, indicating that the train is prohibited from entering.

[0011] Further preferably, the intersection protection zone represents a protection area for protecting trains from collision at cross intersections of lines, and the intersection protection zones are associated in pairs and are hostile to each other; when a train needs to enter a intersection protection zone, the intersection protection zone and its associated hostile cross protection zone need to be assigned to the train, wherein the intersection protection zone of the train's running path is set with allocation information as LockUse, indicating that the running train enters; and the hostile cross protection zone is set with allocation information as LockForbidUse, indicating that the train is prohibited from entering.

[0012] Further preferably, each switch defines a set of switch areas, which include a movable area and a deadlock area of ​​the switch, the movable area refers to the track area where displacement will occur when the switch rotates, and the deadlock area refers to the area where the train may pass through the switch tip when sliding backward; when there is a train in the switch area, the switch cannot move. If the train's running path enters this area, the switch resource needs to be allocated to the train and the switch position needs to be locked, and the recorded allocation information is locked position or locked reverse position.

[0013] Further preferably, both section resources and turnout resources can be applied for exclusive allocation, which means that the resources are only authorized to be used by the train with exclusive allocation, and other trains cannot use them even if they have been allocated the resources.

[0014] Further preferably, in step S2, the criteria for determining that the retreat request is valid are: the retreat request is valid; no train enters the retreat area, and no other conditions restricting train entry are activated; and no protection range of non-CBTC trains is included in the retreat area.

[0015] More preferably, for a valid backoff request, a backoff resource application is performed according to the following scheme: If the retreat area does not have a route for other trains that is hostile to the retreat direction, you can apply for the section resources and turnout resources corresponding to the train running path, side impact protection area, and intersection protection area within the retreat path range; If there is already an approach route for other trains in the retreat area that is hostile to the retreat direction, you can apply for the section resources and turnout resources corresponding to the side impact protection area and the intersection protection area within the retreat path range, and set up a special application for the section resources of the train path. The special application means that you only apply for exclusive allocation and do not apply for allocation direction.

[0016] More preferably, when applying for train route section resources, the calculation is performed according to the following method: Along the retreat direction, the section covered by the projection of the retreat path is used as the section resource to be applied for. If the projection covers the entire section, the range from the zero coordinate to the section length of the section is used as the resource to be applied for; if only part of the section is covered, the interval of the covered range is used as the resource to be applied for, and the application allocation direction is the retreat direction of the train.

[0017] More preferably, when applying for side impact protection zone resources, the following method is used for calculation: If the projection range of the retreat path includes the side impact protection zone, all the segment resources included in the side impact protection zone will be applied for, and the allocation attribute will be LockUse; and all the segment resources included in the hostile side impact protection zone associated with the side impact protection zone will be applied for, and the allocation attribute will be LockForbidUse.

[0018] More preferably, when applying for cross protection zone resources, the calculation is performed according to the following method: If the projection range of the regression path includes the cross-protection zone, all segment resources included in the cross-protection zone will be applied for, and the allocation attribute will be LockUse; and all segment resources included in the hostile cross-protection zone associated with the cross-protection zone will be applied for, and the allocation attribute will be LockForbidUse.

[0019] More preferably, when applying for turnout resources, the following calculation is performed: If the projection range of the regressive path includes the turnout area, then apply for the turnout resources associated with the area, and apply for the turnout to be locked to the position connected to the regressive path. If the projection range of the regressive path only includes a part of the turnout area and does not include the turnout tip, then apply for the turnout to be locked at the current position.

[0020] Further preferably, in step S3, the hostile relationship of resources is determined according to the following principles: (1) When the allocation information of multiple trains is recorded on a resource, the new allocation application of the resource needs to check the hostile relationship with the allocation information of each train recorded on the resource; (2) When a resource has been allocated to a train, when the train re-applies for the resource, the new application and the train allocation information recorded on the resource are not considered to be in a hostile relationship; (3) When a resource has been marked as exclusively allocated by a specific train, other trains applying for the resource are considered hostile.

[0021] More preferably, for segment resources, if the intervals overlap, it is necessary to check whether there is hostility according to the following method: For a newly applied train running path type section resource, if a train running path type section resource has already been allocated and the allocation direction is opposite to the newly applied allocation direction, it is judged as hostile; if a side impact protection zone type section resource or a crossing protection zone type section resource has already been allocated and the allocation is LockForbidUse, it is judged as hostile; For a new application for a side impact protection zone type segment resource and the application is allocated as LockUse, if there is already a side impact protection zone type segment resource or a cross protection zone type segment resource allocated and the allocation is LockForbidUse, it is judged as hostile; For a new application for a side impact protection zone type section resource and the application is assigned as LockForbidUse, if there is already a side impact protection zone type section resource or a crossing protection zone type section resource assigned as LockUse, it is determined to be hostile; if there is already a train running path type section resource assigned, it is determined to be hostile; For a new application for cross protection zone type resources and the application allocation is LockUse, if there is already a side impact protection zone type resource or cross protection zone type resource allocation and the allocation is LockForbidUse, it is judged as hostile; For a new application for intersection protection zone type section resources and the application is allocated as LockForbidUse, if there is already a resource allocation for side impact protection zone type section resources or intersection protection zone type section resources and the allocation is LockUse, it is judged as hostile; if there is already a resource allocation for train running path type section resources, it is judged as hostile.

[0022] More preferably, for turnout resources, if the turnout has been allocated to other trains and the locked position is opposite to the newly applied position, it is determined to be hostile.

[0023] More preferably, the switch operation follows the principle of allocation before operation. When the switch resources have been allocated and the allocation position is inconsistent with the collection position, the switch is driven to rotate to the allocation position. When the switch collection position is consistent with the allocation position, the switch enters a locked state.

[0024] Further preferably, the open status of the signal will be calculated based on the resource allocation status of the signal protection range and the attributes of the train associated upstream of the signal; after the route is successfully processed, the signal cannot be opened when the upstream of the signal is not a CBTC train and the resources in the signal protection range are applied for as exclusive resources by other trains.

[0025] Further preferably, in step S4, when there is a CBTC train in the reversing direction, the CBTC train in the reversing direction needs to provide the RMU with a parking guarantee that it will not enter the reversing area; when there is a non-CBTC train in the reversing direction, the RMU detects that the buffer protection range of the non-CBTC train will not enter the reversing area.

[0026] Further preferably, in step S5, the RMU releases the line resources of the regressing train by deleting the allocation information of the regressing train recorded on the corresponding resources.

[0027] Compared with the prior art, the beneficial technical effects brought by the present invention are as follows: 1. The present invention converts the pre-defined static regression area into dynamic regression area management by setting line resources in the RMU system, thereby improving the flexibility of train management and expanding the application scenarios of regression management.

[0028] 2. The present invention uses a resource allocation-based approach to achieve locking of the train operation area. Compared with the traditional CI approach, it has more refined management granularity and flexibility, and simplifies the associated locking logic.

[0029] 3. The present invention simplifies the train retreat authorization originally managed by ZC and CI to be managed by RMU alone by setting line resources and resource allocation, which effectively simplifies the process, reduces costs and improves overall operating efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a flow chart of a train regression management method based on line resources of the present invention; Figure 2 Schematic diagram of the train retreat area in the example of the present invention. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings of the present invention specification to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only 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 are within the scope of protection of the present invention.

[0032] As a preferred embodiment of the present invention, refer to the attached specification Figure 1As shown, this embodiment discloses a train regression management method based on line resources, and the train regression management method includes the following steps: S1. Setting line resources in the RMU system, wherein the line resources include section resources and turnout resources, wherein the section resources include three types: train running path, side impact protection area and crossing protection area, and the turnout resources are turnouts of the line; S2. After the reversing train sends a reversing request to the RMU, the RMU determines the validity of the reversing request and applies for reversing resources for the reversing train whose reversing request is valid; S3, RMU is responsible for managing the application and allocation of line resources, and providing relevant resource status information for calculating signal opening; RMU compares the allocation information of each resource in the resource application with the existing resource allocation information progress to determine whether there is a hostile relationship; if there is no hostile relationship, the resource application is determined to be successful, and RMU allocates these resources to the retreating train and records the allocation information on the resources; S4. When the line resources are allocated successfully and the turnout is locked to the expected position, the RMU calculates the movement authorization point of the retreating train based on the line information and the information of other trains, and sends the movement authorization point to the retreating train, and the retreating train performs the retreat operation; S5. After the retreating train completes the retreating operation, the RMU releases the line resources of the retreating train.

[0033] Among them, the block resource (BlockRS) is defined as the range of intervals on a segment, which is described by the triple of "block index (BlockIndex), interval minimum coordinates (BlockMinAbs), interval maximum coordinates (BlockMaxAbs)". The types of block resource allocation are divided into three categories, namely, train running path (TypePath), side impact protection area (TypeFouling), and cross protection area (TypeCross).

[0034] The train running path (TypePath) describes the line area where the train needs to be authorized to run. It is composed of multiple section resources. When a section resource is allocated to a train as a train running path, the allocation information recorded on the section resource is LockUp or LockDown, which respectively indicates that the train's running direction is up or down.

[0035] Side impact protection zone (TypeFouling) describes the protection area for preventing trains from side impact at the turnout. The positioning and reverse positions of the turnout are each associated with a side impact protection zone. The positioning side impact protection zone and the reverse side impact protection zone are mutually hostile and cannot be used at the same time. When a train needs to enter the side impact protection zone of the turnout, it is necessary to assign both the side impact protection zone and its hostile side impact protection zone to the train. The side impact protection zone on the train's running path is set to LockUse, which means that the train is allowed to enter; the hostile side impact protection zone is set to LockForbidUse, which means that the train is prohibited from entering.

[0036] Cross protection zone (TypeCross) describes the protection area for preventing trains from colliding at the crossover of the line (such as the crossover of the crossover line). Cross protection zones are associated in pairs and are hostile to each other. When a train needs to enter a cross protection zone, it is necessary to assign the cross protection zone and its associated hostile cross protection zone to the train. The cross protection zone of the train's running path is set to LockUse, which means that the train is allowed to enter; the hostile cross protection zone is set to LockForbidUse, which means that the train is prohibited from entering.

[0037] The turnout resource is defined as the turnout of the line, and its recorded allocation information is the lock position (LockNorma1) and the lock reverse position (LockReverse). Each turnout defines a set of turnout areas (PointArea), which include the turnout's movable area (i.e., the track area where the turnout will be displaced when the turnout is turned) and the deadlock area (i.e., the area where the train may pass through the turnout point when it slides backward). When there is a train in the turnout area, the turnout cannot move. If the train's running path enters the turnout area, the turnout resource needs to be allocated to the train and the turnout position needs to be locked.

[0038] Both section resources and turnout resources can apply for exclusive allocation, which means that the resources are only authorized for use by trains with exclusive allocation, and other trains cannot use them even if they have been allocated the resources.

[0039] In order to dynamically calculate the resource information required for the train's running path, each section records the information of the side impact protection area, intersection protection area and switch area covered by it.

[0040] As a preferred implementation of this embodiment, in step S2, after the reversing train sends a reversing request to the RMU, the RMU determines the validity of the reversing request. When the following conditions are met, the reversing request is determined to be valid: (1) the reversing request is valid; (2) no train enters the reversing area, and no other conditions restricting the entry of trains are activated (for example, the personnel protection switch is activated, the garage door and flood prevention door are closed, the platform screen door is opened, etc.); (3) the protection range of no non-CBTC train is included in the reversing area.

[0041] For a valid detraining request, the detraining train, as a resource applicant, applies for resources in the following way: If the retreat area does not have a route for other trains that is hostile to the retreat direction, you can apply for the section resources and turnout resources corresponding to the train running path, side impact protection area, and intersection protection area within the retreat path range; If there is already an approach route for other trains that is hostile to the retreat direction, you can apply for the section resources and turnout resources corresponding to the side impact protection area and intersection protection area within the retreat path range, and set a special application for the section resources of the train path type, that is, only apply for exclusive allocation and do not apply for allocation direction.

[0042] Furthermore, when applying for section resources of the train running path type, the calculation is performed according to the following method: Along the retreat direction, the section covered by the projection of the retreat path is used as the section resource to be applied for. If the projection covers the entire section, the range from the zero coordinate to the section length is used as the resource to be applied for; if only part of the section is covered, the interval within the covered range is used as the resource to be applied for, and the allocation direction applied for is the retreat direction of the train (in case of special application, only exclusive allocation is applied for, and no allocation direction is applied for).

[0043] When applying for side impact protection zone resources, the following calculation method shall be used: If the projection range of the retreat path includes the side impact protection zone, all the segment resources included in the side impact protection zone will be applied for, and the allocation attribute will be LockUse; and all the segment resources included in the hostile side impact protection zone associated with the side impact protection zone will be applied for, and the allocation attribute will be LockForbidUse.

[0044] When applying for cross protection zone resources, the calculation method is as follows: If the projection range of the regression path includes the cross-protection zone, all segment resources included in the cross-protection zone will be applied for, and the allocation attribute will be LockUse; and all segment resources included in the hostile cross-protection zone associated with the cross-protection zone will be applied for, and the allocation attribute will be LockForbidUse.

[0045] When applying for turnout resources, the calculation is based on the following scheme: If the projection range of the regressive path includes the turnout area, then apply for the turnout resources associated with the area, and apply for the turnout to be locked to the position connected to the regressive path. If the projection range of the regressive path only includes a part of the turnout area and does not include the turnout tip, then apply for the turnout to be locked at the current position.

[0046] RMU is responsible for managing resource application allocation and providing relevant resource status information for calculating signal opening. Specifically, when RMU receives a new resource application, if the allocation information of each new resource application in the application does not conflict with the existing resource allocation information, it determines that the resource application is successful, allocates these resources to the reversing train that made the application, and records the allocation information on the resources.

[0047] When there is no hostility, the same resource can be allocated to different trains, that is, one resource can record the allocation information of multiple trains.

[0048] RMU determines the hostility of resources based on the following principles: (1) When the allocation information of multiple trains is recorded on a resource, the new allocation application of the resource needs to check the hostile relationship with the allocation information of each train recorded on the resource; (2) When a resource has been allocated to a train, when the train re-applies for the resource, the new application and the train allocation information recorded on the resource are not considered to be in a hostile relationship; (3) When a resource has been marked as exclusively allocated by a specific train, other trains applying for the resource are considered hostile; (4) For segment resources, if the intervals overlap, you need to check whether there is hostility according to the following method: For a newly applied train running path section resource, if a train running path section resource has already been allocated and the allocation direction is opposite to the newly applied allocation direction, it is considered hostile; If there is already a side impact protection zone or cross protection zone resource allocation and it is assigned as LockForbidUse, it is judged as hostile; For a new application for a side impact protection zone type segment resource and the application is allocated as LockUse, if there is already a side impact protection zone type segment resource or a cross protection zone type segment resource allocated and the allocation is LockForbidUse, it is judged as hostile; For a new application for a side impact protection zone type section resource and the application is assigned as LockForbidUse, if there is already a side impact protection zone type section resource or a crossing protection zone type section resource assigned as LockUse, it is determined to be hostile; if there is already a train running path type section resource assigned, it is determined to be hostile; For a new application for cross protection zone type resources and the application allocation is LockUse, if there is already a side impact protection zone type resource or cross protection zone type resource allocation and the allocation is LockForbidUse, it is judged as hostile; For a new application for intersection protection zone type section resources and the application is allocated as LockForbidUse, if there is already a resource allocation for side impact protection zone type section resources or intersection protection zone type section resources and the allocation is LockUse, it is judged as hostile; if there is already a resource allocation for train running path type section resources, it is judged as hostile.

[0049] (5) For turnout resources, if the turnout has been allocated to other trains and the locked position is opposite to the newly applied position, it is judged as hostile. Turnout operation follows the principle of allocation first and then operation. When the turnout resources have been allocated and the allocated position is inconsistent with the collection position, the turnout is driven to rotate to the allocated position. When the turnout collection position is consistent with the allocated position, the turnout enters the locked state.

[0050] The open state of the signal is calculated based on the resource allocation state of the signal protection range and the train attributes associated with the upstream of the signal. After the route is successfully processed, the signal cannot be opened when the upstream of the signal is not a CBTC train and the resources in the signal protection range are applied as exclusive resources by other trains.

[0051] When line resources are allocated successfully and the turnout is locked to the expected position, the RMU calculates the movement authorization point for retreat based on the line information and the information of other trains. When there is a CBTC train in the retreat direction, the CBTC train needs to provide a parking guarantee that it will not enter the retreat area; when there is a non-CBTC train in the retreat direction, it is necessary to detect that the buffer protection range of the non-CBTC train will not enter the retreat area.

[0052] When the retreat ends, the line resources that are no longer needed are released, that is, the allocation information of the retreating train recorded on the corresponding resources is deleted.

[0053] As an example of this embodiment, refer to the attached Figure 2 As shown in the figure, when setting line resources, Figure 2The two lateral impact protection zones (FoulingZone) shown, FZ_1 and FZ_2, are the lateral impact protection zones for the positioning and reverse positions of turnout P1 respectively, and the two are hostile to each other. The coverage of FZ_1 includes all areas of section B_4 and part of B_5. Assuming that its interval description is [0,100] of B_4 and [0,20] of B_5, the hostile lateral impact protection zone associated with FZ_1 is FZ_2; the coverage of FZ_2 includes all areas of section B_6 and part of B_7. Assuming that its interval description is [0,100] of B_6 and [0,20] of B_7, the hostile lateral impact protection zone associated with FZ_2 is FZ_1. On the line map, B_4 / B_5 are associated with FZ_1; B_6 / B_7 are associated with FZ_2.

[0054] Train T_1 sends a retreat request to RMU. RMU receives the retreat request from train T_1. The retreat direction is Up, and the retreat area is calculated to include all areas of sections B_2 / B_3 and part of B_4. Assume that the interval description is [0,100] for B_2, [0,100] for B_3, and [0,30] for B_4. When the retreat request is determined to be valid, the section resources and turnout resources of the retreat area will be applied. Because the retreat area includes the direction of the side impact protection zone FZ_1, FZ_1 and its associated hostile FZ_2 also need to be included in the resource application scope. Based on this, train T_1 applies for the following resources: Segment resource (B_2,0,100), type TypePath, allocation information is LockUp; Segment resource (B_3,0,100), type TypePath, allocation information is LockUp; Segment resource (B_4,0,30), type TypePath, allocation information is LockUp; Segment resource (B_4,0,100), type TypeFouling, allocation information is LockUse; Segment resource (B_5,0,20), type TypeFouling, allocation information is LockUse; Segment resource (B_6,0,100), type TypeFouling, allocation information is LockForbidUse; Segment resource (B_7,0,20), type TypeFouling, allocation information is LockForbidUse; Turnout resource (P1), the allocation information is LockNormal.

[0055] RMU is responsible for managing the application and allocation of line resources. When RMU determines that there is no hostility in the resource request (if T_1's LockDown allocation information already exists on B_2, T_1's new application for LockUp allocation information on B_2 is not considered hostile because it is the allocation information of the same train), it allocates the requested resources to train T_1, records the allocation information corresponding to train T_1 on each allocated resource, and then drives and locks the switch P1 to the position.

[0056] When the line resources are allocated successfully, the turnout is locked to the desired position, and there are no other factors restricting the train from retreating, the RMU will provide the train T_1 with a movement authorization point for retreating.

[0057] When the train T_1 retreat operation is completed and an application is made to release the line resources that are no longer needed, the RMU will delete the allocation information of the corresponding section resources and turnout resources on the resources.

Claims

1. A train regression management method based on line resources, characterized by: The train regression management method includes the following steps: S1. Setting line resources in the RMU system, wherein the line resources include section resources and turnout resources, wherein the types of section resource allocation include three types: train running path, side impact protection area and crossing protection area, and the turnout resources are turnouts of the line; S2. After the reversing train sends a reversing request to the RMU, the RMU determines the validity of the reversing request and applies for reversing resources for the reversing train whose reversing request is valid; S3, RMU is responsible for managing the application and allocation of line resources, and providing relevant resource status information for calculating signal opening; RMU compares the allocation information of each resource in the resource application with the existing resource allocation information progress to determine whether there is a hostile relationship; if there is no hostile relationship, the resource application is determined to be successful, and RMU allocates these resources to the retreating train and records the allocation information on the resources; S4. When the line resources are allocated successfully and the turnout is locked to the expected position, the RMU calculates the movement authorization point of the retreating train based on the line information and the information of other trains, and sends the movement authorization point to the retreating train, and the retreating train performs the retreat operation; S5. After the retreating train completes the retreating operation, the RMU releases the line resources of the retreating train.

2. A train regression management method based on line resources as claimed in claim 1, characterized in that: The segment resource is defined as an interval range on a segment, which is described by a triple of "segment index, interval minimum coordinate, interval maximum coordinate".

3. A train regression management method based on line resources as claimed in claim 1 or 2, characterized in that: The train running path describes the line area where the train needs to be authorized to run, and is composed of multiple section resources. When resources are allocated to the train as a running path, the allocation information recorded on the resources is LockUp or LockDown, which respectively represents the train's running direction is up and down.

4. A train regression management method based on line resources as claimed in claim 1 or 2, characterized in that: The side impact protection zone represents a protection area for protecting against side collisions of trains at switches. The positioning and reverse positions of the switch are respectively associated with side impact protection zones. The positioning side impact protection zone and the reverse position side impact protection zone are mutually hostile and cannot be used at the same time. When a train needs to enter the side impact protection zone of the switch, both the side impact protection zone and its hostile side impact protection zone need to be allocated to the train, wherein the side impact protection zone on the train's running path is set to have its allocation information set to LockUse, indicating that the train is allowed to enter; and the hostile side impact protection zone is set to have its allocation information set to LockForbidUse, indicating that the train is prohibited from entering.

5. A train regression management method based on line resources as claimed in claim 1 or 2, characterized in that: The cross protection zone represents a protection area that protects against train collisions at the cross intersection of the line. The cross protection zones are associated in pairs and are hostile to each other. When a train needs to enter a cross protection zone, the cross protection zone and its associated hostile cross protection zone need to be assigned to the train. The cross protection zone of the train's running path is set with allocation information set to LockUse, indicating that the running train enters; and the hostile cross protection zone is set with allocation information set to LockForbidUse, indicating that the train is prohibited from entering.

6. A train regression management method based on line resources as claimed in claim 1 or 2, characterized in that: Each turnout defines a set of turnout areas, which include the movable area and deadlock area of ​​the turnout. The movable area refers to the track area where displacement will occur when the turnout rotates, and the deadlock area refers to the area where the train may pass through the turnout tip when sliding backwards. When there is a train in the turnout area, the turnout cannot move. If the train's running path enters this area, the turnout resource needs to be allocated to the train and the turnout position needs to be locked. The recorded allocation information is locked position or locked reverse position.

7. A train regression management method based on line resources as claimed in claim 1 or 2, characterized in that: Both section resources and turnout resources can be applied for exclusive allocation, which means that the resources are only authorized for use by trains with exclusive allocation, and other trains cannot use them even if they have been allocated the resources.

8. A train regression management method based on line resources as claimed in claim 1 or 2, characterized in that: In step S2, the criteria for determining whether the retreat request is valid are: the retreat request is valid; no train enters the retreat area, and no other conditions restricting train entry are activated; and no non-CBTC train protection range is included in the retreat area.

9. A train regression management method based on line resources as claimed in claim 1 or 2, characterized in that: For a valid deregistration request, deregistration resources are requested according to the following scheme: If the retreat area does not have a route for other trains that is hostile to the retreat direction, you can apply for the section resources and turnout resources corresponding to the train running path, side impact protection area, and intersection protection area within the retreat path range; If there is already an approach route for other trains in the retreat area that is hostile to the retreat direction, you can apply for the section resources and turnout resources corresponding to the side impact protection area and the intersection protection area within the retreat path range, and set up a special application for the section resources of the train path. The special application means that you only apply for exclusive allocation and do not apply for allocation direction.

10. A train regression management method based on line resources as claimed in claim 9, characterized in that: When applying for train route section resources, the calculation method is as follows: Along the retreating direction, the section covered by the projection of the retreating path is taken as the section resource to be applied for. If the projection covers the entire section, the range from the zero coordinate to the section length is taken as the resource to be applied for; if it only covers part of the section, the interval of the covered range is taken as the resource to be applied for, and the allocation direction is the retreating direction of the train. When applying for side impact protection zone resources, the following calculation method shall be used: If the projection range of the retreat path includes the side impact protection zone, all the segment resources included in the side impact protection zone will be applied for, and the allocation attribute will be LockUse; and all the segment resources included in the hostile side impact protection zone associated with the side impact protection zone will be applied for, and the allocation attribute will be LockForbidUse; When applying for cross protection zone resources, the calculation method is as follows: If the projection range of the regression path includes the cross-protection zone, all segment resources included in the cross-protection zone will be applied for, and the allocation attribute will be LockUse; and all segment resources included in the hostile cross-protection zone associated with the cross-protection zone will be applied for, and the allocation attribute will be LockForbidUse.

11. A train regression management method based on line resources as claimed in claim 9, characterized in that: When applying for turnout resources, the calculation is based on the following scheme: If the projection range of the regressive path includes the turnout area, then apply for the turnout resources associated with the area, and apply for the turnout to be locked to the position connected to the regressive path. If the projection range of the regressive path only includes a part of the turnout area and does not include the turnout tip, then apply for the turnout to be locked at the current position.

12. A train regression management method based on line resources as claimed in claim 1 or 2, characterized in that: In step S3, the hostile relationship of resources is determined according to the following principles: (1) When the allocation information of multiple trains is recorded on a resource, the new allocation application of the resource needs to check the hostile relationship with the allocation information of each train recorded on the resource; (2) When a resource has been allocated to a train, when the train re-applies for the resource, the new application and the train allocation information recorded on the resource are not considered to be in a hostile relationship; (3) When a resource has been marked as exclusively allocated by a specific train, other trains applying for the resource will be considered hostile.

13. A train regression management method based on line resources as claimed in claim 12, characterized in that: For segment resources, if the intervals overlap, you need to check whether there is hostility as follows: For a newly applied train running path type section resource, if a train running path type section resource has already been allocated and the allocation direction is opposite to the newly applied allocation direction, it is judged as hostile; if a side impact protection zone type section resource or a crossing protection zone type section resource has already been allocated and the allocation is LockForbidUse, it is judged as hostile; For a new application for a side impact protection zone type segment resource and the application is allocated as LockUse, if there is already a side impact protection zone type segment resource or a cross protection zone type segment resource allocated and the allocation is LockForbidUse, it is judged as hostile; For a new application for a side impact protection zone type section resource and the application is assigned as LockForbidUse, if there is already a side impact protection zone type section resource or a crossing protection zone type section resource assigned as LockUse, it is determined to be hostile; if there is already a train running path type section resource assigned, it is determined to be hostile; For a new application for cross protection zone type resources and the application allocation is LockUse, if there is already a side impact protection zone type resource or cross protection zone type resource allocation and the allocation is LockForbidUse, it is judged as hostile; For a new application for intersection protection zone type section resources and the application is allocated as LockForbidUse, if there is already a resource allocation for side impact protection zone type section resources or intersection protection zone type section resources and the allocation is LockUse, it is judged as hostile; if there is already a resource allocation for train running path type section resources, it is judged as hostile.

14. A train regression management method based on line resources as claimed in claim 12, characterized in that: For turnout resources, if the turnout has been allocated to other trains and the locked position is opposite to the newly applied position, it is judged as hostile.

15. A train regression management method based on line resources as claimed in claim 14, characterized in that: The turnout operation follows the principle of allocation before operation. When the turnout resources have been allocated and the allocation position is inconsistent with the collection position, the turnout is driven to rotate to the allocation position. When the turnout collection position is consistent with the allocation position, the turnout enters the locked state.

16. A train regression management method based on line resources as claimed in claim 1 or 2, characterized in that: The open status of the signal will be calculated based on the resource allocation status of the signal's protection range and the attributes of the train associated with the upstream of the signal. After the route is successfully processed, the signal cannot be opened if the upstream of the signal is not a CBTC train and the resources in the signal's protection range are applied for as exclusive resources by other trains.

17. A train regression management method based on line resources as claimed in claim 1 or 2, characterized in that: In step S4, when there is a CBTC train in the reversing direction, the CBTC train in the reversing direction needs to provide the RMU with a parking guarantee that it will not enter the reversing area; when there is a non-CBTC train in the reversing direction, the RMU detects that the buffer protection range of the non-CBTC train will not enter the reversing area.

18. A train regression management method based on line resources as claimed in claim 1 or 2, characterized in that: In step S5, the RMU releases the line resources of the regressing train by deleting the allocation information of the regressing train recorded on the corresponding resources.

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