Train retrograde management method based on line resources

Abstract

The application discloses a train retrograde management method based on line resources and relates to the technical field of train operation control. The application comprises the following steps: setting line resources in an RMU system; calculating, by the RMU, whether a retrograde request issued by a retrograde train is valid; applying for line resources and performing resource allocation for the retrograde train whose retrograde request is valid; when the line resource allocation is successful and a turnout is locked to an expected position, calculating, by the RMU, a moving authorization point of the retrograde train according to line information and information of other trains, sending the moving authorization point to the retrograde train, and performing retrograde operation by the retrograde train; and releasing the line resources when the retrograde operation is completed. The train retrograde authorization originally managed by a ZC and a CI is simplified to be managed by the RMU alone, so that the process is effectively simplified, the cost is reduced, and the overall operation efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of train operation control, and more particularly to a train retreat management method based on line resources. BACKGROUND

[0002] During the train operation process, retreat operation may be required. For example, when entering the station to perform the stop-to-marker parking, the over-marker phenomenon may occur. The driver operates the reverse retreat to re-mark when the over-marker does not exceed a certain distance. The unattended train can use the reverse jump function to retreat. Such traditional methods are only applicable to pre-set static areas, and the use flexibility is limited, which is not suitable for dynamic location and dynamic distance train retreat management.

[0003] For example, the patent application with the application publication number CN111845854A and the application publication date of October 30, 2020, and the name of “Train retreat protection method and system based on communication” provides a train retreat protection method and system based on communication to overcome the problem that the driver drives the train to retreat when the train is over-marked, which is prone to cause side collision risk. Among them, the retreat protection method includes: in the CM mode, the ATP determines that the current train is over-marked and meets the pre-set retreat range, and sends the first application information to the ZC; after the ZC receives the first application information, it determines that the current line meets the pre-set line condition, and sends the second application information to the CI; after the CI receives the second application information, it determines that the rear section of the current train meets the pre-set locking condition, and returns the first permission information to the ZC; the first permission information triggers the ZC to return the second permission information to the ATP; after the ATP determines that the traction brake handle is placed in the traction position, the direction handle is backward, and the second permission information is received, the ATP generates the prompt information for triggering the man-machine interface (MMI) to prompt the driver of the current train to retreat.

[0004] The traditional CI provides locking and authorized operation range for the train based on the route unit. When the train needs to retreat to the area that has been unlocked, the CI manages the re-locking of the dynamically delineated area, which is complex and inefficient. SUMMARY

[0005] In order to overcome the defects and deficiencies existing in the prior art, the application provides a train retrograde management method based on line resources. The application aims to solve the problem that the traditional CI is complex and inefficient in relocking the dynamically divided area. The application provides a train retrograde management method based on line resources based on the system architecture of CI and ZC integration (RMU), which includes setting line resources, calculating whether the retrograde request is valid and line resource application, line resource management, retrograde authorization calculation and release of line resources after retrograde. The application simplifies the train retrograde authorization originally managed by ZC and CI into the management of RMU alone, effectively simplifies the process, reduces the cost and improves the overall operation efficiency.

[0006] In order to solve the problems existing in the prior art, the application is realized through the following technical scheme.

[0007] The application provides a train retrograde management method based on line resources, which includes the following steps:

[0008] S1, setting line resources in the RMU system, the line resources including section resources and turnout resources, wherein the type of section resource allocation includes three types of train running path, side collision protection area and intersection protection area, and the turnout resources are turnouts of the line;

[0009] S2, after the retrograde train sends a retrograde request to the RMU, the RMU judges the validity of the retrograde request, and the RMU applies for retrograde resources for the retrograde train with a valid retrograde request;

[0010] S3, the RMU is responsible for the application and distribution of line resources, and provides relevant resource state information for the calculation of signal machine opening. The RMU compares the distribution information of each resource in the resource application with the existing resource distribution information, judges whether there is an enemy relationship, and if there is no enemy relationship, judges that the resource application is successful, the RMU distributes these resources to the retrograde train and records the distribution information on the resources;

[0011] S4, when the line resource distribution is successful and the turnout is locked to the desired position, the RMU calculates the movement authorization point of the retrograde train according to the line information and the information of other trains, and sends the movement authorization point to the retrograde train, and the retrograde train performs the retrograde operation;

[0012] S5, after the retrograde train completes the retrograde operation, the RMU releases the line resources of the retrograde train.

[0013] Further preferably, the section resource is defined as an interval range on a section, which is described by a three-tuple of "section index, interval minimum coordinate, interval maximum coordinate".

[0014] Further preferably, the train running path describes the line area where the train needs to be authorized to run, which is composed of a plurality of section resources, and the allocation information recorded on the resources is LockUp or LockDown, representing the running direction of the train is up or down, respectively.

[0015] Further preferably, the side collision protection area represents the protection area for protecting the train from side collision at the turnout, and the positioning and reversing of the turnout are respectively associated with the side collision protection area, and the positioning side collision protection area and the reversing side collision protection area are mutually hostile and cannot be used at the same time; when the train needs to enter the side collision protection area of the turnout, the side collision protection area and its hostile side collision protection area need to be allocated to the train, wherein the allocation information of the side collision protection area on the train running path is set as LockUse, representing that the train is allowed to enter; and the allocation information of the hostile side collision protection area is set as LockForbidUse, representing that the train is prohibited to enter.

[0016] Further preferably, the intersection protection area represents the protection area for protecting the train from collision at the line intersection, and the intersection protection areas are associated in pairs and are mutually hostile; when the train needs to enter an intersection protection area, the intersection protection area and its associated hostile intersection protection area need to be allocated to the train, wherein the allocation information of the intersection protection area on the train running path is set as LockUse, representing that the train is allowed to enter; and the allocation information of the hostile intersection protection area is set as LockForbidUse, representing that the train is prohibited to enter.

[0017] Further preferably, each turnout defines a set of turnout areas, which includes the movable area of the turnout and the dead lock area, wherein the movable area refers to the track area that will be displaced when the turnout is turned, and the dead lock area refers to the area that the train can pass through the turnout point when the train backs up; when the turnout area has a train, the turnout cannot be moved, and if the train running path enters the area, the turnout resource needs to be allocated to the train, and the turnout position is locked, and the recorded allocation information is the locked positioning or the locked reversing.

[0018] Further preferably, the section resource and the turnout resource can be applied for exclusive allocation, representing that the resource is only authorized for the exclusive allocation train to use, and other trains cannot use the resource even if they have been allocated the resource.

[0019] Further preferably, in the S2 step, the standard for determining that the retreat request is valid is that the retreat request is valid; there is no train entering the retreat area, and there is no other condition that limits the train from entering the retreat area; and the protection range of the non-CBTC train is not included in the retreat area.

[0020] Further preferably, for the valid retreat request, the retreat resource application is performed according to the following scheme:

[0021] If the regressive area does not have other trains with the route in the opposite direction of the regressive direction, the train running path, the side collision protection area, the intersection protection area corresponding to the section resource and the turnout resource in the regressive path range can be applied;

[0022] If the regressive area already has other trains with the route in the opposite direction of the regressive direction, the side collision protection area, the intersection protection area corresponding to the section resource and the turnout resource in the regressive path range can be applied, and the special application of the train running path type section resource is set, that is, only the exclusive allocation is applied and the direction allocation is not applied.

[0023] Further preferably, when applying the train running path type section resource, the following method is used for calculation:

[0024] Along the regressive direction, the section covered by the regressive path projection is regarded as the section resource to be applied, if the entire section is covered, the range from the zero coordinate to the length of the section is regarded as the resource to be applied; if only part of the section is covered, the covered range is regarded as the resource to be applied, and the direction of the allocation is the regressive direction of the train.

[0025] Further preferably, when applying the side collision protection area type section resource, the following method is used for calculation:

[0026] If the regressive path projection range contains the side collision protection area, all the section resources contained in the side collision protection area are applied with the LockUse allocation attribute, and all the section resources contained in the enemy side collision protection area associated with the side collision protection area are applied with the LockForbidUse allocation attribute.

[0027] Further preferably, when applying the intersection protection area type section resource, the following method is used for calculation:

[0028] If the regressive path projection range contains the intersection protection area, all the section resources contained in the intersection protection area are applied with the LockUse allocation attribute, and all the section resources contained in the enemy intersection protection area associated with the intersection protection area are applied with the LockForbidUse allocation attribute.

[0029] Further preferably, when applying the turnout resource, the following scheme is used for calculation:

[0030] If the regressive path projection range contains the turnout area, the turnout resource associated with the area is applied, and the turnout is locked to the position connected to the regressive path, if the regressive path projection range only contains part of the turnout area and does not contain the turnout tip, the turnout is locked at the current position.

[0031] Further preferably, in the S3 step, the enemy relationship of the resource is determined according to the following principles:

[0032] (1) When recording the allocation information of multiple trains 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;

[0033] (2) When a resource has been allocated to a train, if the train re-applies for the resource, the new application and the allocation information of the train recorded on the resource are not determined as hostile relationship;

[0034] (3) When a resource has been marked as exclusive allocation by a specific train, other trains applying for the resource are all determined as hostile.

[0035] Further preferably, for section resources, if the intervals overlap, the following method needs to be used to check whether there is a hostile relationship:

[0036] For a newly applied train running path type section resource, if there already exists a train running path type section resource allocation and the allocation direction is opposite to the new application allocation direction, it is determined as hostile; if there already exists a side collision protection area type section resource or a crossing protection area type section resource allocation and the allocation is LockForbidUse, it is determined as hostile;

[0037] For a newly applied side collision protection area type section resource and an application allocation of LockUse, if there already exists a side collision protection area type section resource or a crossing protection area type section resource allocation and the allocation is LockForbidUse, it is determined as hostile;

[0038] For a newly applied side collision protection area type section resource and an application allocation of LockForbidUse, if there already exists a side collision protection area type section resource or a crossing protection area type section resource allocation and the allocation is LockUse, it is determined as hostile; if there already exists a train running path type section resource allocation, it is determined as hostile;

[0039] For a newly applied crossing protection area type section resource and an application allocation of LockUse, if there already exists a side collision protection area type section resource or a crossing protection area type section resource allocation and the allocation is LockForbidUse, it is determined as hostile;

[0040] For a newly applied crossing protection area type section resource and an application allocation of LockForbidUse, if there already exists a side collision protection area type section resource or a crossing protection area type section resource allocation and the allocation is LockUse, it is determined as hostile; if there already exists a train running path type section resource allocation, it is determined as hostile.

[0041] Further preferably, for the turnout resource, if the turnout has been allocated to other trains and the locking position and the newly applied position are opposite, it is determined as hostile.

[0042] Further preferably, the turnout operation follows the principle of allocation first and operation later, when the turnout resource has been allocated and the allocation position and the collection position are inconsistent, the turnout is driven to rotate to the allocation position, when the turnout collection position and the allocation position are consistent, the turnout enters the locking state.

[0043] Further preferably, the open state of the signal machine is calculated according to the resource allocation state of the signal machine protection range and the train attribute associated upstream of the signal machine; after the route is successfully handled, when the train upstream of the signal machine is not a CBTC train and the resource of the signal machine protection range is applied as an exclusive resource by other trains, the signal cannot be opened.

[0044] Further preferably, in the S4 step, when there is a CBTC train in the retreat direction, the CBTC train in the retreat direction needs to provide a parking guarantee to the RMU that will not enter the retreat area; when there is a non-CBTC train in the retreat direction, the RMU detects that the buffer protection range of the non-CBTC train will not enter the retreat area.

[0045] Further preferably, in the S5 step, the RMU releases the line resource of the retreat train by deleting the allocation information of the retreat train recorded on the corresponding resource.

[0046] Compared with the prior art, the beneficial technical effects brought by the present application are as follows:

[0047] 1、The present application converts the pre-designated static retreat area into a dynamic retreat area management by setting the line resource in the RMU system, which improves the flexibility of train management and expands the retreat management application scenario.

[0048] 2、The present application realizes the locking of the train operation area based on resource allocation, which has more refined management granularity and flexibility compared with the CI traditional route method, and simplifies the associated locking logic.

[0049] 3、The present application simplifies the train retreat authorization originally managed by ZC and CI into a self-management of RMU by setting the line resource and resource allocation, which effectively simplifies the process, reduces the cost, and improves the overall operation efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0050] Figure 1 The present application is a train retreat management method based on line resource;

[0051] Figure 2 The present application is a train retreat area schematic diagram in the example. DETAILED DESCRIPTION

[0052] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of the present application.

[0053] As a preferred embodiment of the present application, referring to the accompanying drawings of the present application, Figure 1 The present embodiment discloses a train retreating management method based on line resources, and the train retreating management method comprises the following steps:

[0054] S1, setting line resources in an RMU system, wherein the line resources comprise block resources and switch resources, the block resources comprise three types of train running paths, side collision protection zones and crossing protection zones, and the switch resources are switches of the line;

[0055] S2, after a retreating train sends a retreating request to the RMU, the RMU judges the validity of the retreating request, and the RMU applies for retreating resources for the retreating train with a valid retreating request;

[0056] S3, the RMU is responsible for applying and distributing the line resources, and provides relevant resource state information for computing signal machine opening; the RMU compares the distribution information of each resource in the resource application with the existing resource distribution information, judges whether there is an antagonistic relationship, judges that the resource application is successful if there is no antagonistic relationship, and the RMU distributes the resources to the retreating train and records the distribution information on the resources;

[0057] S4, when the line resource distribution is successful and the switch is locked to the desired position, the RMU calculates the moving authorization point of the retreating train according to the line information and the information of other trains, and sends the moving authorization point to the retreating train, and the retreating train performs retreating operation;

[0058] S5, after the retreating train completes the retreating operation, the RMU releases the line resources of the retreating train.

[0059] The block resource (BlockRS) is defined as an interval range on a block, which is described by a three-tuple of “block index (BlockIndex), interval minimum coordinate (BlockMinAbs), interval maximum coordinate (BlockMaxAbs)”. The types of block resource distribution are divided into three types, which are train running path (TypePath), side collision protection zone (TypeFouling) and crossing protection zone (TypeCross).

[0060] Train Path (TypePath), describes the line area where the train needs to be authorized to run, which is composed of multiple section resources. When a section resource is allocated to a train as a train path, the recorded allocation information on the section resource is LockUp or LockDown, which respectively represents the running direction of the train is up or down.

[0061] Side Collision Protection Area (TypeFouling), describes the protection area that protects the train from side collision at the turnout. The positioning and reversing of the turnout are respectively associated with the side collision protection area. The positioning side collision protection area and the reversing side collision protection area are mutually hostile and cannot be used at the same time. When the train needs to enter the side collision protection area of the turnout, the side collision protection area and its hostile side collision protection area need to be allocated to the train. The allocation information of the side collision protection area on the train path is set to LockUse, which represents that the train is allowed to enter; and the allocation information of the hostile side collision protection area is set to LockForbidUse, which represents that the train is prohibited to enter.

[0062] Cross Protection Area (TypeCross), describes the protection area that protects the train from collision at the line cross (such as the cross of the cross track). The cross protection area is associated in pairs and is mutually hostile. When the train needs to enter a cross protection area, the cross protection area and its associated hostile cross protection area need to be allocated to the train. The allocation information of the cross protection area on the train path is set to LockUse, which represents that the train is allowed to enter; and the allocation information of the hostile cross protection area is set to LockForbidUse, which represents that the train is prohibited to enter.

[0063] The turnout resource is defined as the turnout of the line, and the recorded allocation information is lock positioning (LockNormal) and lock reversing (LockReverse). Each turnout defines a set of turnout areas (PointArea), which includes the movable area of the turnout (i.e. the track area that will displace when the turnout rotates) and the dead lock area (i.e. the area that the train can pass through the turnout frog when it backs up). When the train exists in the turnout area, the turnout cannot be moved. If the train path enters the turnout area, the turnout resource needs to be allocated to the train and the turnout position is locked.

[0064] The section resource and the turnout resource can apply for exclusive allocation, which means that the resource is only authorized for the exclusive allocation of the train, and other trains cannot use it even if they have allocated the resource.

[0065] In order to dynamically calculate the required resource information of the train path, the side collision protection area, the cross protection area, and the turnout area information covered on each section are recorded.

[0066] As a preferred embodiment of the present embodiment, in the S2 step, after the receding train sends a receding request to the RMU, the RMU determines the validity of the receding request, and when the following conditions are met, the receding request is determined to be valid: (1) the receding request is valid; (2) there is no train entering the receding area, and there is no other condition for limiting the train from entering (for example, the personnel protection switch is activated, the garage door, the flood prevention door is closed, the platform screen door is opened, and the like); (3) there is no protection range of non-CBTC trains contained in the receding area.

[0067] For a valid receding request, the receding train as a resource applicant applies for resources in the following manner:

[0068] If the receding area does not handle a route for other trains in the opposite direction of the receding direction, the train walking path, the side collision protection area, the intersection protection area, and the corresponding section resources and switch resources in the receding path range can be applied.

[0069] If the receding path already exists for other trains in the opposite direction of the receding direction, the side collision protection area, the intersection protection area, and the corresponding section resources and switch resources in the receding path range can be applied, and the section resources of the train walking path type are set to special application, that is, only the exclusive allocation is applied and the direction allocation is not applied.

[0070] Further, when applying for section resources of the train walking path type, the following method is used for calculation:

[0071] Along the receding direction, the section covered by the projection of the receding path is regarded as the section resource to be applied, if the entire section is covered, the range from the zero coordinate to the length of the section is regarded as the resource to be applied; if only part of the section is covered, the covered range is regarded as the resource to be applied, and the direction of the exclusive allocation is the receding direction of the train (special application only applies for exclusive allocation, and does not apply for direction allocation).

[0072] When applying for section resources of the side collision protection area type, the following method is used for calculation:

[0073] If the projection range of the receding path contains the side collision protection area, all the section resources contained in the side collision protection area are applied, and the allocation attribute is LockUse; and all the section resources contained in the opposite side collision protection area associated with the side collision protection area are applied, and the allocation attribute is LockForbidUse.

[0074] When applying for section resources of the intersection protection area type, the following method is used for calculation:

[0075] If the regression path projection range contains the intersection protection area, all section resources contained by the intersection protection area are applied and the attribute LockUse is assigned; and all section resources contained by the enemy intersection protection area associated with the intersection protection area are applied and the attribute LockForbidUse is assigned.

[0076] When applying for a turnout resource, the following scheme is used for calculation:

[0077] If the regression path projection range contains the turnout area, the turnout resource associated with the area is applied and the turnout is locked to the position connected by the regression path. If the regression path projection range contains only part of the turnout area and does not contain the turnout tip, the turnout is locked at the current position.

[0078] The RMU is responsible for the application and allocation of resources, and provides relevant resource state information for the calculation of signal opening. Specifically, when the RMU receives a new resource application, if the allocation information of each resource newly applied in the application and the existing resource allocation information do not exist in conflict, it is determined that the resource application is successful, and the resources are allocated to the regression train that makes the application and the allocation information is recorded on the resources.

[0079] When there is no conflict, the same resource can be allocated to different trains, i.e., one resource can record the allocation information of multiple trains.

[0080] The RMU determines the conflict relationship of the resources according to the following principles:

[0081] (1) When multiple trains' allocation information is recorded on a resource, the new allocation application of the resource needs to check the conflict relationship with the allocation information of each train recorded on the resource;

[0082] (2) When a resource has been allocated to a train, the new application of the resource by the train is not determined as a conflict with the allocation information of the train recorded on the resource;

[0083] (3) When a resource has been marked as exclusive allocation by a specific train, the application of the resource by other trains is determined as a conflict;

[0084] (4) For section resources, if the intervals overlap, the following method is used to check whether there is a conflict:

[0085] For newly applied train running path type section resources, if there already exists a train running path type section resource allocation and the allocation direction is opposite to the newly applied allocation direction, it is determined as a conflict;

[0086] If there already exists a side collision protection area type section resource or an intersection protection area type section resource allocation and the allocation is LockForbidUse, it is determined as a conflict;

[0087] For a new application of a side-swipe protection zone type section resource and an application allocation of LockUse, if there already exists a resource allocation of a side-swipe protection zone type section resource or a cross-protection zone type section resource and the allocation is LockForbidUse, it is determined as hostile;

[0088] For a new application of a side-swipe protection zone type section resource and an application allocation of LockForbidUse, if there already exists a resource allocation of a side-swipe protection zone type section resource or a cross-protection zone type section resource and the allocation is LockUse, it is determined as hostile; if there already exists a resource allocation of a train running path type section resource, it is determined as hostile;

[0089] For a new application of a cross-protection zone type section resource and an application allocation of LockUse, if there already exists a resource allocation of a side-swipe protection zone type section resource or a cross-protection zone type section resource and the allocation is LockForbidUse, it is determined as hostile;

[0090] For a new application of a cross-protection zone type section resource and an application allocation of LockForbidUse, if there already exists a resource allocation of a side-swipe protection zone type section resource or a cross-protection zone type section resource and the allocation is LockUse, it is determined as hostile; if there already exists a resource allocation of a train running path type section resource, it is determined as hostile.

[0091] (5) For a switch resource, if the switch has been allocated to another train and the locking position and the newly applied position are opposite, it is determined as hostile. The switch operation follows the principle of allocation first and operation later. When the switch resource has been allocated and the allocation position and the collection position are not consistent, the switch is driven to rotate to the allocation position. When the switch collection position and the allocation position are consistent, the switch enters the locking state.

[0092] The open state of a signal machine is calculated according to the resource allocation state of the signal machine protection range and the train attribute associated upstream of the signal machine. After the route is successfully handled, the signal cannot be opened when the train upstream of the signal machine is not a CBTC train and the signal machine protection range resource is applied as an exclusive resource by another train.

[0093] When the line resource allocation is successful and the switch is locked to the expected position, the RMU calculates the regressive movement authority point according to the line information and the information of other trains. When there is a CBTC train in the regressive direction, the CBTC train needs to provide a parking guarantee that will not enter the regressive area. When there is a non-CBTC train in the regressive direction, the buffer protection range of the non-CBTC train needs to be detected to not enter the regressive area.

[0094] When the retreat ends, the line resources that are no longer needed are released, that is, the train allocation information recorded on the corresponding resource is deleted.

[0095] As an example of this embodiment, please refer to the appendix to the specification. Figure 2 As shown, when configuring line resources, such as Figure 2 The two foiling zones shown are FZ_1 and FZ_2, which are the foiling zones for turnout P1 positioning and reversal, respectively, and they are mutually antagonistic. FZ_1 covers all areas of section B_4 and part of section B_5, assuming its interval description is [0,100] for B_4 and [0,20] for B_5. The antagonistic foiling zone associated with FZ_1 is FZ_2. FZ_2 covers all areas of section B_6 and part of section B_7, assuming its interval description is [0,100] for B_6 and [0,20] for B_7. The antagonistic foiling zone associated with FZ_2 is FZ_1. On the track map, B_4 / B_5 are associated with FZ_1; B_6 / B_7 are associated with FZ_2.

[0096] Train T_1 sends a backtracking request to the RMU. The RMU receives the backtracking request from train T_1, indicating a backtracking direction of Up. It calculates the backtracking area, which includes all areas of sections B_2 / B_3 and part of B_4, assuming the section description is [0,100] for B_2, [0,100] for B_3, and [0,30] for B_4. After determining the backtracking request is valid, it requests section resources and turnout resources for the backtracking area. Because the backtracking area includes the orientation of the side impact protection zone FZ_1, FZ_1 and its associated opposing FZ_2 also need to be included in the resource request scope. Based on this, train T_1 requests the following resources:

[0097] The segment resource (B_2,0,100) is of type TypePath, and its allocation information is LockUp.

[0098] The segment resource (B_3,0,100) is of type TypePath, and its allocation information is LockUp.

[0099] The resource segment (B_4,0,30) is of type TypePath, and its allocation information is LockUp.

[0100] The segment resource (B_4,0,100), type TypeFouling, allocation information is LockUse;

[0101] The segment resource (B_5,0,20), type TypeFouling, allocation information is LockUse;

[0102] Section resource (B_6, 0, 100) with type TypeFouling and allocation information LockForbidUse;

[0103] Section resource (B_7, 0, 20) with type TypeFouling and allocation information LockForbidUse;

[0104] Turnout resource (P1) with allocation information LockNormal.

[0105] RMU is responsible for the application and allocation of line resources. When the RMU determines that there is no conflict in the resource request (if there is already LockDown allocation information of T_1 on B_2, and T_1 applies LockUp allocation information on B_2, because it is the same train, the allocation information is not determined as a conflict), the RMU allocates the requested resource to train T_1, records the corresponding allocation information of train T_1 on each allocated resource, and then drives and locks turnout P1 to the desired position.

[0106] When the line resource allocation is successful, the turnout is locked to the desired position, and there is no other factor that restricts the train from retreating, the RMU will provide the train T_1 with a moving authorization point for retreat.

[0107] When the train T_1 retreats and the work is completed, the RMU will delete the corresponding section resource and turnout resource allocation information on the resource.

Claims

1. A train retrograde management method based on line resources, characterized in that: The train backing management method comprises the following steps, S1, setting line resources in the RMU system, the line resources comprising section resources and turnout resources, wherein the section resources are assigned in three types including a train running path, a side collision protection zone and a crossing protection zone, and the turnout resources are turnouts of the line; S2, after a backing train sends a backing request to the RMU, the RMU judges the validity of the backing request, and applies for backing resources for the backing train whose backing request is valid; S3, the RMU is responsible for applying and assigning the line resources, and provides relevant resource state information for computing signal opening; the RMU compares the assignment information of each resource in the resource application with the existing resource assignment information, judges whether there is an enemy relationship, and if not, judges that the resource application is successful, the RMU assigns the resources to the backing train and records the assignment information on the resources; S4, when the line resources are successfully assigned and the turnouts are locked to the desired position, the RMU calculates a moving authorization point of the backing train according to the line information and the information of other trains, and sends the moving authorization point to the backing train, and the backing train performs backing operation; S5, after the backing train completes the backing operation, the RMU releases the line resources of the backing train.

2. The train retrograde management method based on line resources according to claim 1, characterized in that: The section resource is defined as an interval range on a section, described by a three-tuple of "section index, interval minimum coordinate, interval maximum coordinate".

3. The train retrograding management method based on line resources according to claim 1 or 2, characterized in that: The train running path describes a line area that needs to be authorized for train operation, composed of multiple section resources, and the assignment information recorded on the resources is LockUp or LockDown when the resources are assigned to the train as a running path, representing the running direction of the train is up or down, respectively.

4. The train retrograde management method based on line resources according to claim 1 or 2, characterized in that: The side collision protection zone represents a protection area for protecting trains from side collision at turnouts, and the positioning and reversing of the turnouts are respectively associated with the side collision protection zones, and the positioning side collision protection zone and the reversing side collision protection zone are enemies and cannot be used at the same time; when a train needs to enter the side collision protection zone of a turnout, the side collision protection zone and its enemy side collision protection zone are both assigned to the train, wherein the side collision protection zone on the train running path is set with assignment information LockUse, representing allowing the train to enter; and the enemy side collision protection zone is set with assignment information LockForbidUse, representing prohibiting the train from entering.

5. The train retrograding management method based on line resources according to claim 1 or 2, characterized in that: The crossing protection zone represents a protection area for protecting trains from collision at line cross intersections, and the crossing protection zones are associated in pairs and are enemies of each other; when a train needs to enter a crossing protection zone, the crossing protection zone and its associated enemy crossing protection zone are both assigned to the train, wherein the crossing protection zone of the train running path is set with assignment information LockUse, representing the running train entering; and the enemy crossing protection zone is set with assignment information LockForbidUse, representing prohibiting the train from entering.

6. The train retrograding management method based on line resources according to claim 1 or 2, characterized in that: Each turnout defines a set of turnout regions, which includes movable region and deadlock region of the turnout, the movable region refers to the track region which will be displaced when the turnout is turned, the deadlock region refers to the region which the train can pass through the turnout frog when the train backs up; when the turnout region exists the train, the turnout cannot be moved, if the running path of the train enters the region, the turnout resource needs to be allocated to the train, and the locking position or the locking reverse position is recorded.

7. The train retrograding management method based on line resources according to claim 1 or 2, characterized in that: Both the section resource and the turnout resource can be applied for exclusive allocation, which means that the resource is only authorized to be used by the train with exclusive allocation, and other trains cannot use the resource even if they have been allocated the resource.

8. The train retrograding management method based on line resources according to claim 1 or 2, characterized in that: In S2, the standard for determining the validity of the backing request is: the backing request is valid; no train enters the backing region, and no other condition which limits the train from entering is activated; no protection range of non-CBTC train is contained in the backing region.

9. The train retrograding management method based on line resources according to claim 1 or 2, characterized in that: For the valid backing request, the following scheme is used for backing resource application: If the backing region does not handle the route which is hostile to the backing direction for other trains, the section resources and turnout resources corresponding to the train running path, side rush protection area and intersection protection area in the backing path range can be applied; If the backing region already exists the route which is hostile to the backing direction for other trains, the section resources and turnout resources corresponding to the side rush protection area and intersection protection area in the backing path range can be applied, and the special application of the train running path type section resource is set, which means that only exclusive allocation is applied and no allocation direction is applied.

10. The train retrograding management method based on line resources according to claim 9, characterized in that: When the train running path type section resource is applied, the following method is used for calculation: Along the backing direction, the section covered by the projection of the backing path is regarded as the section resource to be applied, if the whole section is covered, the range from zero coordinate to the length of the section is regarded as the resource to be applied; if only part of the section is covered, the interval of the covered range is regarded as the resource to be applied, and the allocation direction is the backing direction of the train; When the side rush protection area type section resource is applied, the following method is used for calculation: If the projection range of the backing path contains the side rush protection area, all the section resources contained in the side rush protection area are applied with the allocation attribute of LockUse; and all the section resources contained in the hostile side rush protection area associated with the side rush protection area are applied with the allocation attribute of LockForbidUse; When the intersection protection area type section resource is applied, the following method is used for calculation: If the projection range of the backing path contains the intersection protection area, all the section resources contained in the intersection protection area are applied with the allocation attribute of LockUse; and all the section resources contained in the hostile intersection protection area associated with the intersection protection area are applied with the allocation attribute of LockForbidUse.

11. The train retrograding management method based on line resources according to claim 9, characterized in that: When the turnout resource is applied, the following scheme is used for calculation: If the projection range of the backing path contains the turnout region, the turnout resource associated with the region is applied, and the turnout is locked to the position connected with the backing path, if the projection range of the backing path only contains part of the turnout region and does not contain the frog, the turnout is locked at the current position.

12. The train retrograding management method based on line resources according to claim 1 or 2, characterized in that: In S3, the enemy relationship of the resource 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 enemy relationship with the allocation information of each train recorded on the resource; (2) When a resource has been allocated to a train, the new application and the allocation information of the train recorded on the resource are not determined as enemy relationship; (3) When the resource has been marked as exclusive allocation by a specific train, other trains applying for the resource are all determined as enemy.

13. The train retrograding management method based on line resources according to claim 12, characterized in that: For section resources, if the intervals overlap, the following method is used to check whether there is an enemy: For newly applied train running path type section resources, if there is already a train running path type section resource allocation and the allocation direction is opposite to the new application allocation direction, it is determined as enemy; if there is already a side collision protection area type section resource or a crossing protection area type section resource allocation and the allocation is LockForbidUse, it is determined as enemy; For newly applied side collision protection area type section resources and application allocation LockUse, if there is already a side collision protection area type section resource or a crossing protection area type section resource allocation and the allocation is LockForbidUse, it is determined as enemy; For newly applied side collision protection area type section resources and application allocation LockForbidUse, if there is already a side collision protection area type section resource or a crossing protection area type section resource allocation and the allocation is LockUse, it is determined as enemy; if there is already a train running path type section resource allocation, it is determined as enemy; For newly applied crossing protection area type section resources and application allocation LockUse, if there is already a side collision protection area type section resource or a crossing protection area type section resource allocation and the allocation is LockForbidUse, it is determined as enemy; For newly applied crossing protection area type section resources and application allocation LockForbidUse, if there is already a side collision protection area type section resource or a crossing protection area type section resource allocation and the allocation is LockUse, it is determined as enemy; if there is already a train running path type section resource allocation, it is determined as enemy.

14. The train retrograding management method based on line resources according to claim 12, characterized in that: For switch resources, if the switch has been allocated to other trains and the locking position and the new application position are opposite, it is determined as enemy.

15. The train retrograding management method based on line resources according to claim 14, characterized in that: The switch operation follows the principle of allocation first and operation later. When the switch resource has been allocated and the allocation position and the collection position are not consistent, the switch is driven to rotate to the allocation position. When the switch collection position and the allocation position are consistent, the switch enters the locking state.

16. The train retrograding management method based on line resources according to claim 1 or 2, characterized in that: The open state of the signal machine is calculated according to the resource allocation state of the signal machine protection range and the train attribute associated upstream of the signal machine; after the route is successfully handled, when the train upstream of the signal machine is not CBTC and the signal machine protection range resource is applied as exclusive resource by other trains, the signal cannot be opened.

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

18. The train retrograding management method based on line resources according to claim 1 or 2, characterized in that: In the S5 step, the RMU releases the line resources of the backing train in the following manner: deleting the allocation information of the backing train recorded on the corresponding resources.

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