Method and device for multiple trains to enter same operation section based on track circuit

Abstract

The embodiment of the invention provides a method and device for multiple trains to enter the same operation section based on a track circuit. The method comprises the steps that track circuit information of falling and sucking of relays of multiple operation sections in the track circuit is recorded in real time; under the condition that two adjacent operation sections in the plurality of operation sections are judged to logically have vehicles according to the track circuit information, the relay in response to the A operation section is sucked up, and the A operation section is switched to the B operation section according to the track circuit information; determining a driving distance of a logic vehicle I in the operation section B, an occupancy value of a logic vehicle II in the operation section A and a migration value from the operation section A to the operation section B, and when judging that the logic vehicle II meets a preset migration condition of entering the operation section B from the operation section A, determining that the logic vehicle II enters the operation section B from the operation section A; and confirming that the second logic vehicle has entered the B operation section where the first logic vehicle is located from the A operation section, and setting the A operation section to be available.

Description

Technical Field

[0001] The present invention relates to the field of railway technology, and in particular to a method and device for multiple trains entering the same operating section based on a track circuit. Background Art

[0002] Currently, track circuit-based logical occupancy checks are performed within a signal permission (SA) range. If a track section's occupancy doesn't meet the three-point check principle, the section is marked as a poorly shunted section and an alarm is issued. In this case, if a logically occupied vehicle is identified within the SA range in the direction of travel through the three-point check, the previously marked poorly shunted section can be restored. The SA dynamically extends as the preceding vehicle moves.

[0003] With the development of railway technology, particularly the research and application of moving block technology, on tracks circuit-based dual-function moving block lines, RBC can authorize the movement of multiple moving block trains within a block section (multiple track sections or a single track section). However, using the existing three-point check, in this case, because the SA range is 0, the train occupancy information disappears, and the signal equipment reports a "bad branch" for the track section or block section where the missing train is located.

[0004] In the process of implementing the present invention, the applicant discovered that the prior art has at least the following problems:

[0005] The system falsely reports poor track circuit section branching when multiple moving block trains are in the same track section or block section. This does not increase the safety of the system, but increases the workload of personnel confirmation and reduces transportation efficiency, restricting and limiting the tight tracking advantage of moving block trains under moving block. Summary of the Invention

[0006] The embodiments of the present invention provide a method and apparatus for enabling multiple trains to enter the same track section or block section under train occupancy check based on a track circuit. This method and apparatus can solve the problem that the system falsely reports poor track circuit section branching when multiple moving block trains are in the same track section or block section, which does not increase the safety of the system but increases the workload of personnel for confirmation and reduces transportation efficiency, thereby restricting and limiting the tight tracking advantage of moving block trains under moving block system.

[0007] To achieve the above objectives, on the one hand, an embodiment of the present invention provides a method for multiple trains to enter the same operating section based on a track circuit, comprising:

[0008] Real-time recording of track circuit information of relays dropping and picking up in multiple operating sections of the track circuit;

[0009] When it is determined based on the track circuit information that two adjacent operating sections among the plurality of operating sections are logically occupied by vehicles, in response to the relay of operating section A being energized, a travel distance of logically occupied vehicle one within operating section B, an occupancy value of logically occupied vehicle two in operating section A, and a migration value from operating section A to operating section B are determined based on the track circuit information;

[0010] determining whether the logically occupied vehicle 2 meets a preset migration condition from the operating section A to the operating section B based on the travel distance of the logically occupied vehicle 1 in the operating section B, the occupancy value of the logically occupied vehicle 2 in the operating section A, and the migration value from the operating section A to the operating section B;

[0011] If it is determined that the logical vehicle 2 meets the preset migration condition from the operating section A to the operating section B, confirming that the logical vehicle 2 has entered the operating section B from the operating section A, and setting the operating section A to be available;

[0012] Among them, the two adjacent operating sections are respectively the A operating section and the B operating section, the A operating section is located in the direction of the train, and the B operating section is located in the direction of the train; when determining that two adjacent operating sections among the multiple operating sections are logically occupied by vehicles, the logical vehicle one is located in the B operating section, and the logical vehicle two is located in the A operating section; the operating sections include track sections or block sections.

[0013] Furthermore, the method further comprises:

[0014] When it is determined that the logic vehicle 2 does not meet the preset migration condition from the A operation section to the B operation section, the A operation section is set to be a poor branching.

[0015] Furthermore, the method further comprises:

[0016] In the case where the relay of the B operating section remains in the down state, in response to the relay of the D operating section being down, determining the occupancy value of the logical vehicle 1 in the C operating section and the migration value from the C operating section to the D operating section according to the track circuit information;

[0017] Determining whether the occupancy value of the logical vehicle 1 in the C operating section is greater than or equal to a preset occupancy threshold value of the C operating section, and whether the migration value of the logical vehicle 1 from the C operating section to the D operating section is greater than or equal to a preset migration threshold value from the C operating section to the D operating section;

[0018] If it is determined that the occupancy value of the logical vehicle 1 in the C operating section is greater than or equal to the preset occupancy threshold value of the C operating section, and the migration value of the logical vehicle 1 from the C operating section to the D operating section is greater than or equal to the preset migration threshold value from the C operating section to the D operating section, confirm that the logical vehicle 1 is located in the D operating section, the logical vehicle 2 is located in the B operating section, and set the A operating section to be available;

[0019] Among them, the C operating section is the adjacent section to which the B operating section is heading; the D operating section is the adjacent section to which the C operating section is heading.

[0020] Furthermore, based on the travel distance of the logical vehicle 1 in the operating section B, the occupancy value of the logical vehicle 2 in the operating section A, and the migration value from the operating section A to the operating section B, determining whether the logical vehicle 2 meets a preset migration condition from the operating section A to the operating section B includes:

[0021] If the occupancy value of the logical vehicle 2 in the A operating section is greater than or equal to the preset occupancy threshold value of the A operating section, and the migration value of the logical vehicle 2 from the A operating section to the B operating section is greater than or equal to the preset migration threshold value from the A operating section to the B operating section, and the travel distance of the logical vehicle 1 in the B operating section is greater than or equal to the preset safety distance, it is determined that the logical vehicle 2 meets the preset migration condition from the A operating section to the B operating section; otherwise, it is determined that the logical vehicle 2 does not meet the preset migration condition from the A operating section to the B operating section;

[0022] The preset safety distance is the sum of the logical vehicle length and the preset safety protection distance.

[0023] Furthermore, the track circuit information includes: the relay drop time point, relay drop duration, and relay pick-up time point of each operating section;

[0024] Determining, based on the track circuit information, a travel distance of a logically occupied vehicle 1 within the operating section B, an occupancy value of a logically occupied vehicle 2 in the operating section A, and a migration value from the operating section A to the operating section B, including:

[0025] Searching from the track circuit information the first time point at which the relay of the B operating section remains in the attracted state and the relay of the A operating section falls, which immediately occurs before the current time, and the second time point at which the relay of the A operating section remains in the fallen state and the relay of the B operating section falls, which immediately occurs after the relay of the A operating section remains in the attracted state and the relay of the B operating section falls;

[0026] The value of the second time point minus the first time point is used as the migration value of the logic vehicle 1 from the A operation section to the B operation section;

[0027] The entrance speed of the logical vehicle 1 entering the B operation section from the A operation section is obtained by dividing the vehicle body length of the logical vehicle 1 by the migration value of the logical vehicle 1 entering the B operation section from the A operation section;

[0028] The value obtained by subtracting the second time from the current time is multiplied by the entry speed of the logical vehicle 1 from the operation section A to the operation section B to obtain the travel distance of the logical vehicle 1 in the operation section B;

[0029] Searching the track circuit information for a third time point occurring after the second time point at which the relay of the B operating section remains down, the relay of the preceding operating section of the A operating section remains down, and the relay of the A operating section is down, and a fourth time point occurring after the third time point at which the relay of the B operating section remains down, the relay of the A operating section remains down, and the relay of the preceding operating section of the A operating section is up;

[0030] The value of the fourth time point minus the third time point is used as the migration value of the logic vehicle 2 entering the A operation segment from the previous operation segment of the A operation segment;

[0031] The vehicle body length of the logical vehicle 2 is divided by the migration value of the logical vehicle 2 entering the A operation segment from the previous operation segment of the A operation segment to obtain the entry speed of the logical vehicle 2 entering the A operation segment from the previous operation segment of the A operation segment;

[0032] Searching the track circuit information for a fifth time point after the fourth time point at which the relay of the B operating section remains down and the relay of the A operating section is up, and subtracting the third time point from the fifth time point to obtain a value as the occupancy value of the logical vehicle 2 in the A operating section;

[0033] The running time of the logical vehicle 2 in the A running section is obtained by dividing the length of the A running section by the entry speed of the logical vehicle 2 when entering the A running section from the running section immediately preceding the A running section. The running time of the logical vehicle 2 in the A running section is the time required for the head of the logical vehicle 2 to move from the starting point of the A running section to the end point of the A running section.

[0034] The migration value of the logical vehicle 2 from the A running section to the B running section is obtained by subtracting the running time of the logical vehicle 2 in the A running section from the occupancy value of the logical vehicle 2.

[0035] On the other hand, an embodiment of the present invention provides a device for multiple trains entering the same operating section based on a track circuit, comprising:

[0036] Track information acquisition unit, used to record track circuit information of multiple operating section relays dropping and picking up in real time;

[0037] a logical vehicle operation information acquisition unit, configured to, in response to the relay of operation section A being activated, determine, based on the track circuit information, a travel distance of logically occupied vehicle one within operation section B, an occupancy value of logically occupied vehicle two in operation section A, and a migration value from operation section A to operation section B, when it is determined based on the track circuit information that two adjacent operation sections among the plurality of operation sections are logically occupied;

[0038] a first migration condition judgment unit, configured to judge whether the logically occupied vehicle 2 meets a preset migration condition for entering the operating section B from the operating section A based on the travel distance of the logically occupied vehicle 1 in the operating section B, the occupancy value of the logically occupied vehicle 2 in the operating section A, and the migration value from the operating section A to the operating section B;

[0039] a first migration result determining unit for, upon determining that the second logical vehicle meets a preset migration condition for entering the B operating section from the A operating section, confirming that the second logical vehicle has entered the B operating section from the A operating section, and setting the A operating section as available;

[0040] Among them, the two adjacent operating sections are respectively the A operating section and the B operating section, the A operating section is located in the direction of the train, and the B operating section is located in the direction of the train; when determining that two adjacent operating sections among the multiple operating sections are logically occupied by vehicles, the logical vehicle one is located in the B operating section, and the logical vehicle two is located in the A operating section; the operating sections include track sections or block sections.

[0041] Furthermore, the device further comprises:

[0042] The second migration result determination unit is used to set the A operation section to be a poor branching when it is determined that the logical vehicle 2 does not meet the preset migration conditions from the A operation section to the B operation section.

[0043] Furthermore, the device further comprises:

[0044] a C section occupancy value and migration value determining unit, configured to determine, in response to the relay in the D operating section being dropped, an occupancy value of the logical vehicle 1 in the C operating section and a migration value from the C operating section to the D operating section based on the track circuit information, while the relay in the B operating section remains in the dropped state;

[0045] a second migration condition judgment unit, configured to judge whether the occupancy value of the logical vehicle 1 in the C operating section is greater than or equal to a preset occupancy threshold value of the C operating section, and whether the migration value of the logical vehicle 1 from the C operating section to the D operating section is greater than or equal to a preset migration threshold value from the C operating section to the D operating section;

[0046] a third migration result determining unit, configured to, if it is determined that the occupancy value of the logically available vehicle one in the operating section C is greater than or equal to the preset occupancy threshold value of the operating section C, and the migration value of the logically available vehicle one from the operating section C to the operating section D is greater than or equal to the preset migration threshold value from the operating section C to the operating section D, confirm that the logically available vehicle one is located in the operating section D, the logically available vehicle two is located in the operating section B, and set the operating section A to be available;

[0047] Among them, the C operating section is the adjacent section to which the B operating section is heading; the D operating section is the adjacent section to which the C operating section is heading.

[0048] Furthermore, the first migration condition judgment unit is configured to:

[0049] If the occupancy value of the logical vehicle 2 in the A operating section is greater than or equal to the preset occupancy threshold value of the A operating section, and the migration value of the logical vehicle 2 from the A operating section to the B operating section is greater than or equal to the preset migration threshold value from the A operating section to the B operating section, and the travel distance of the logical vehicle 1 in the B operating section is greater than or equal to the preset safety distance, it is determined that the logical vehicle 2 meets the preset migration condition from the A operating section to the B operating section; otherwise, it is determined that the logical vehicle 2 does not meet the preset migration condition from the A operating section to the B operating section;

[0050] The preset safety distance is the sum of the logical vehicle length and the preset safety protection distance.

[0051] Furthermore, the track circuit information includes: the relay drop time point, relay drop duration, and relay pick-up time point of each operating section;

[0052] The logical vehicle operation information acquisition unit includes:

[0053] A first time and a second time determining module is configured to search from the track circuit information for a first time point at which the relay of the B operating section remains in an attracted state and the relay of the A operating section falls, which immediately follows the current time, and a second time point at which the relay of the A operating section remains in an attracted state and the relay of the B operating section falls;

[0054] a module for determining a migration value of the logical vehicle 1 from the A to B section, configured to use the value at the second time point minus the first time point as the migration value of the logical vehicle 1 from the A operation section to the B operation section;

[0055] a logic vehicle one B section entry speed determination module, configured to obtain an entry speed of the logic vehicle one from the A operation section to the B operation section by dividing the body length of the logic vehicle one by the migration value of the logic vehicle one from the A operation section to the B operation section;

[0056] a module for determining the distance traveled by the logical vehicle 1 in section B, configured to multiply the value obtained by subtracting the second time from the current time by the entrance speed of the logical vehicle 1 when entering the B operating section from the A operating section to obtain the distance traveled by the logical vehicle 1 in the B operating section;

[0057] a third time and fourth time determination module configured to search, from the track circuit information, a third time point occurring after the second time point at which the relay of the B operating section remains down and the relay of the preceding operating section of the A operating section remains down and the relay of the A operating section is down, and a fourth time point occurring after the third time point at which the relay of the B operating section remains down and the relay of the A operating section remains down and the relay of the preceding operating section of the A operating section is up;

[0058] a module for determining a migration value for the logical vehicle 2 entering the A segment, configured to use a value at the fourth time point minus the third time point as a migration value for the logical vehicle 2 entering the A segment from the previous segment of the A segment;

[0059] a module for determining an entry speed of the logical vehicle 2 entering the A section, configured to obtain an entry speed of the logical vehicle 2 entering the A section from the previous section of the A section by dividing the vehicle length of the logical vehicle 2 by the migration value of the logical vehicle 2 entering the A section from the previous section of the A section;

[0060] a logic car 2 A section occupancy value determination module, configured to search the track circuit information for a fifth time point after the fourth time point at which the relay of the B operating section remains down and the relay of the A operating section is up, and to subtract the third time point from the fifth time point to obtain a value as the occupancy value of the logic car 2 in the A operating section;

[0061] a module for determining the operating time of logical vehicle 2 in segment A, configured to divide the length of segment A by the entrance speed of logical vehicle 2 when entering segment A from the segment immediately preceding segment A, to determine the operating time of logical vehicle 2 in segment A; wherein the operating time of logical vehicle 2 in segment A is the time required for the head of logical vehicle 2 to move from the starting point of segment A to the end point of segment A;

[0062] The module for determining the migration value of the logical vehicle 2 entering the B section is used to use the occupancy value of the logical vehicle 2 in the A operating section minus the operating time of the logical vehicle 2 in the A operating section to obtain the migration value of the logical vehicle 2 from the A operating section to the B operating section.

[0063] The above technical solution has the following beneficial effects: for operating lines based on track circuits for train occupancy inspection, if multiple moving block trains enter the same block section or the same track section, no false alarm of poor branching will be given; for dual-function fusion lines based on track circuits, when moving block trains and moving block trains with communication failures run together in the same block section or the same track section, no false alarm of poor branching will be given for multiple trains entering one operating section. BRIEF DESCRIPTION OF THE DRAWINGS

[0064] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0065] Figure 1 This is a flow chart of a method for multiple trains entering the same operating section based on a track circuit according to one embodiment of the present invention;

[0066] Figure 2 This is an architectural diagram of a device for allowing multiple trains to enter the same operating section based on a track circuit, one of the embodiments of the present invention;

[0067] Figure 3 This is a schematic diagram of multiple trains entering the same block section according to one embodiment of the present invention;

[0068] Figure 4 This is a schematic diagram of multiple trains overtaking into the same track section according to one embodiment of the present invention;

[0069] Figure 5 It is a schematic diagram of the definition of relative positions of track segments according to one embodiment of the present invention. DETAILED DESCRIPTION

[0070] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are 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 making creative efforts are within the scope of protection of the present invention.

[0071] On the one hand, if Figure 1 As shown, an embodiment of the present invention provides a method for multiple trains to enter the same operating section based on a track circuit, comprising:

[0072] Step S10, recording track circuit information of the dropping and picking up of multiple operating section relays in the track circuit in real time;

[0073] Step S11: When it is determined based on the track circuit information that two adjacent operating sections among the plurality of operating sections are logically occupied, in response to the relay of operating section A being energized, a travel distance of logically occupied vehicle one within operating section B, an occupancy value of logically occupied vehicle two in operating section A, and a migration value from operating section A to operating section B are determined based on the track circuit information.

[0074] Step S12: determining whether the logically occupied vehicle 2 meets a preset migration condition from the operating section A to the operating section B based on the travel distance of the logically occupied vehicle 1 within the operating section B, the occupancy value of the logically occupied vehicle 2 in the operating section A, and the migration value from the operating section A to the operating section B;

[0075] Step S13: If it is determined that the second logical vehicle meets the preset migration condition from the A operation section to the B operation section, confirming that the second logical vehicle has entered the B operation section from the A operation section and setting the A operation section to be available;

[0076] Among them, the two adjacent operating sections are respectively the A operating section and the B operating section, the A operating section is located in the direction of the train, and the B operating section is located in the direction of the train; when determining that two adjacent operating sections among the multiple operating sections are logically occupied by vehicles, the logical vehicle one is located in the B operating section, and the logical vehicle two is located in the A operating section; the operating sections include track sections or block sections.

[0077] The method for determining, based on the track circuit information, that two adjacent operating sections among the plurality of operating sections are logically occupied by vehicles comprises:

[0078] If it is determined that the relay action sequence of a certain operating section meets the three-point check for the train to move in the operating direction, and the occupancy value of the train in the operating section is greater than or equal to the occupancy threshold value of the train in the operating section, and the migration value from the operating section to the next operating section in the operating direction is greater than or equal to the migration threshold value of the train, then it can be determined that the operating section is logically occupied and recorded;

[0079] Alternatively, based on the recorded track circuit information of the next operating section in the running direction of the logically vehicle-operated operating section and the logical absence of a vehicle in the next operating section, when the relay of the logically vehicle-operated operating section is energized, it is determined that the occupancy value of the vehicle train in the operating section is greater than or equal to the occupancy threshold value of the vehicle train in the operating section, and that the migration value of the operating section to the next operating section in the running direction is greater than or equal to the migration occupancy threshold value of the vehicle train, then it can be determined that the logical vehicle has entered the next operating section, and the record is made, and the logical vehicle-operated information of the operating section is deleted; otherwise, the logical vehicle-operated information of the operating section is retained and a report of a poor branching of the operating section is made;

[0080] Alternatively, based on the recorded track circuit information of the next operating section in the running direction of the logically vehicle-operating section and the logically vehicle-free section of the next operating section, when the relay of the logically vehicle-operating section is energized, it is determined that the occupancy value of the train in the operating section is greater than or equal to the occupancy threshold value of the train in the operating section, and that the occupancy value in the operating section is greater than or equal to the estimated occupancy value (judged as the migration value of the operating section to the next operating section in the running direction), and the logically vehicle-operated distance of the next operating section is greater than or equal to the sum of the logical vehicle length of the operating section and the safety distance, then it can be determined that the logically vehicle-operated section has entered the next operating section and recorded, and the logically vehicle-operated information of the operating section is deleted and restored to its usability, otherwise the logically vehicle-operated section is maintained and the branching of the operating section is reported to be poor.

[0081] The occupancy threshold value of any logical vehicle to be compared in any operating section is determined according to the following method: the sum of the length of the operating section plus twice the body length of the logical vehicle is divided by the minimum speed between the maximum linear speed allowed in the operating section and the maximum speed of the train.

[0082] For any logical vehicle whose migration value is to be compared, the migration threshold value from the adjacent previous operating section to the current operating section is determined according to the following method: the body length of the logical vehicle is divided by the minimum speed of the maximum linear speed allowed in the current operating section and the maximum speed of the train.

[0083] The occupancy value of any logical vehicle in any operating section is determined according to the following method: when the front of the logical vehicle just enters the operating section, the time when the relay of the operating section changes from being attracted to being dropped is recorded as the first entry time; when the rear of the logical vehicle just leaves the operating section, the time when the relay of the operating section changes from being dropped to being attracted is recorded as the first departure time. The occupancy value of the logical vehicle in the operating section is obtained by subtracting the first entry time from the first departure time.

[0084] The migration value of any logical vehicle entering the current operating section from the previous operating section in the adjacent operating sections is determined according to the following method: the time from the front of the logical vehicle just entering the current operating section, causing the relay of the current operating section to change from being attracted to falling, is recorded as the second entry time; the time from the rear of the logical vehicle just leaving the previous operating section, causing the relay of the previous operating section to change from being fallen to being attracted, is recorded as the second departure time. The second departure time is subtracted from the second entry time to obtain the migration value of the logical vehicle entering the current operating section from the previous operating section in the adjacent operating sections.

[0085] The embodiments of the present invention have the following technical effects: for operating lines that perform train occupancy checks based on track circuits, if multiple moving block trains enter the same block section or the same track section, there will be no false reports of poor shunts; for dual-function fusion lines based on track circuits, when moving block trains and moving block trains with communication failures run together in the same block section or the same track section, there will be no false reports of poor shunts when multiple trains enter one operating section. The dual-function fusion line is information provided by the ground line, and can support both moving block trains and EMUs. Specifically, it is a fusion of the moving block mode based on RBC and transponder information and the C2 mode based on track circuit and transponder information.

[0086] Furthermore, the method further comprises:

[0087] When it is determined that the logic vehicle 2 does not meet the preset migration condition from the A operation section to the B operation section, the A operation section is set to be a poor branching.

[0088] In some embodiments, for example, a relay failure occurs in the A operating section, or the actual operating speed of the logical vehicle 2 in the A operating section exceeds the speed limit, resulting in the operating time in the A operating section being too short, or the migration time from the A operating section to the B operating section being too short. At this time, it is necessary to report a poor branching to the A operating section to give a prompt, even if the actual status of the logical vehicle 2 and the A operating section is confirmed to ensure scheduling safety.

[0089] Furthermore, the method further comprises:

[0090] In the case where the relay of the B operating section remains in the down state, in response to the relay of the D operating section being down, determining the occupancy value of the logical vehicle 1 in the C operating section and the migration value from the C operating section to the D operating section according to the track circuit information;

[0091] Determining whether the occupancy value of the logical vehicle 1 in the C operating section is greater than or equal to a preset occupancy threshold value of the C operating section, and whether the migration value of the logical vehicle 1 from the C operating section to the D operating section is greater than or equal to a preset migration threshold value from the C operating section to the D operating section;

[0092] If it is determined that the occupancy value of the logical vehicle 1 in the C operating section is greater than or equal to the preset occupancy threshold value of the C operating section, and the migration value of the logical vehicle 1 from the C operating section to the D operating section is greater than or equal to the preset migration threshold value from the C operating section to the D operating section, confirm that the logical vehicle 1 is located in the D operating section, the logical vehicle 2 is located in the B operating section, and set the A operating section to be available;

[0093] Among them, the C operating section is the adjacent section to which the B operating section is heading; the D operating section is the adjacent section to which the C operating section is heading.

[0094] The embodiments of the present invention have the following technical effects: a train occupancy check is performed on an operating line based on a track circuit; if a moving block train enters the same block section or the same track section, no shunt failure is reported, or after detecting a shunt failure, the logical car can be automatically selected and the section reporting the shunt failure can be restored to be available; and when entering a track circuit section, if the conditions are met, the order of the logical cars can be automatically selected and continuously tracked; the logical car tracking can be used for the entire line or only for the section; when a moving block train and a moving block train with a communication failure are mixed running in the same block section or the same track section, no shunt failure is reported for multiple trains entering an operating section.

[0095] Furthermore, based on the travel distance of the logical vehicle 1 in the operating section B, the occupancy value of the logical vehicle 2 in the operating section A, and the migration value from the operating section A to the operating section B, determining whether the logical vehicle 2 meets a preset migration condition from the operating section A to the operating section B includes:

[0096] If the occupancy value of the logical vehicle 2 in the A operating section is greater than or equal to the preset occupancy threshold value of the A operating section, and the migration value of the logical vehicle 2 from the A operating section to the B operating section is greater than or equal to the preset migration threshold value from the A operating section to the B operating section, and the travel distance of the logical vehicle 1 in the B operating section is greater than or equal to the preset safety distance, it is determined that the logical vehicle 2 meets the preset migration condition from the A operating section to the B operating section; otherwise, it is determined that the logical vehicle 2 does not meet the preset migration condition from the A operating section to the B operating section;

[0097] The preset safety distance is the sum of the logical vehicle length and the preset safety protection distance.

[0098] Furthermore, the track circuit information includes: the relay drop time point, relay drop duration, and relay pick-up time point of each operating section;

[0099] Determining, based on the track circuit information, a travel distance of a logically occupied vehicle 1 within the operating section B, an occupancy value of a logically occupied vehicle 2 in the operating section A, and a migration value from the operating section A to the operating section B, including:

[0100] Searching from the track circuit information the first time point at which the relay of the B operating section remains in the attracted state and the relay of the A operating section falls, which immediately occurs before the current time, and the second time point at which the relay of the A operating section remains in the fallen state and the relay of the B operating section falls, which immediately occurs after the relay of the A operating section remains in the attracted state and the relay of the B operating section falls;

[0101] The value of the second time point minus the first time point is used as the migration value of the logic vehicle 1 from the A operation section to the B operation section;

[0102] The entrance speed of the logical vehicle 1 entering the B operation section from the A operation section is obtained by dividing the vehicle body length of the logical vehicle 1 by the migration value of the logical vehicle 1 entering the B operation section from the A operation section;

[0103] The value obtained by subtracting the second time from the current time is multiplied by the entry speed of the logical vehicle 1 from the operation section A to the operation section B to obtain the travel distance of the logical vehicle 1 in the operation section B;

[0104] Searching the track circuit information for a third time point occurring after the second time point at which the relay of the B operating section remains down, the relay of the preceding operating section of the A operating section remains down, and the relay of the A operating section is down, and a fourth time point occurring after the third time point at which the relay of the B operating section remains down, the relay of the A operating section remains down, and the relay of the preceding operating section of the A operating section is up;

[0105] The value of the fourth time point minus the third time point is used as the migration value of the logic vehicle 2 entering the A operation segment from the previous operation segment of the A operation segment;

[0106] The vehicle body length of the logical vehicle 2 is divided by the migration value of the logical vehicle 2 entering the A operation segment from the previous operation segment of the A operation segment to obtain the entry speed of the logical vehicle 2 entering the A operation segment from the previous operation segment of the A operation segment;

[0107] Searching the track circuit information for a fifth time point after the fourth time point at which the relay of the B operating section remains down and the relay of the A operating section is up, and subtracting the third time point from the fifth time point to obtain a value as the occupancy value of the logical vehicle 2 in the A operating section;

[0108] The running time of the logical vehicle 2 in the A running section is obtained by dividing the length of the A running section by the entry speed of the logical vehicle 2 when entering the A running section from the running section immediately preceding the A running section. The running time of the logical vehicle 2 in the A running section is the time required for the head of the logical vehicle 2 to move from the starting point of the A running section to the end point of the A running section.

[0109] The migration value of the logical vehicle 2 from the A running section to the B running section is obtained by subtracting the running time of the logical vehicle 2 in the A running section from the occupancy value of the logical vehicle 2.

[0110] On the other hand, Figure 2 As shown, an embodiment of the present invention provides a device for multiple trains entering the same operating section based on a track circuit, comprising:

[0111] Track information acquisition unit 200, used to record track circuit information of the drop and pick-up of relays in multiple operating sections of the track circuit in real time;

[0112] a logical vehicle operation information acquisition unit 201 for determining, in response to the activation of the relay of operation section A, a travel distance of logically occupied vehicle 1 within operation section B, an occupancy value of logically occupied vehicle 2 in operation section A, and a migration value from operation section A to operation section B based on the track circuit information, when it is determined based on the track circuit information that two adjacent operation sections among the plurality of operation sections are logically occupied;

[0113] A first migration condition judgment unit 202 is configured to judge whether the logical vehicle 2 meets a preset migration condition for entering the B operating section from the A operating section based on the travel distance of the logical vehicle 1 in the B operating section, the occupancy value of the logical vehicle 2 in the A operating section, and the migration value from the A operating section to the B operating section;

[0114] The first migration result determining unit 203 is configured to, upon determining that the logical vehicle 2 meets a preset migration condition from the operating section A to the operating section B, confirm that the logical vehicle 2 has entered the operating section B where the logical vehicle 1 is located from the operating section A, and set the operating section A to be available;

[0115] Among them, the two adjacent operating sections are respectively the A operating section and the B operating section, the A operating section is located in the direction of the train, and the B operating section is located in the direction of the train; when determining that two adjacent operating sections among the multiple operating sections are logically occupied by vehicles, the logical vehicle one is located in the B operating section, and the logical vehicle two is located in the A operating section; the operating sections include track sections or block sections.

[0116] Furthermore, the device further comprises:

[0117] The second migration result determination unit is used to set the A operation section to be a poor branching when it is determined that the logical vehicle 2 does not meet the preset migration conditions from the A operation section to the B operation section.

[0118] Furthermore, the device further comprises:

[0119] a C section occupancy value and migration value determining unit, configured to determine, in response to the relay in the D operating section being dropped, an occupancy value of the logical vehicle 1 in the C operating section and a migration value from the C operating section to the D operating section based on the track circuit information, while the relay in the B operating section remains in the dropped state;

[0120] a second migration condition judgment unit, configured to judge whether the occupancy value of the logical vehicle 1 in the C operating section is greater than or equal to a preset occupancy threshold value of the C operating section, and whether the migration value of the logical vehicle 1 from the C operating section to the D operating section is greater than or equal to a preset migration threshold value from the C operating section to the D operating section;

[0121] a third migration result determining unit, configured to, if it is determined that the occupancy value of the logically available vehicle one in the operating section C is greater than or equal to the preset occupancy threshold value of the operating section C, and the migration value of the logically available vehicle one from the operating section C to the operating section D is greater than or equal to the preset migration threshold value from the operating section C to the operating section D, confirm that the logically available vehicle one is located in the operating section D, the logically available vehicle two is located in the operating section B, and set the operating section A to be available;

[0122] Among them, the C operating section is the adjacent section to which the B operating section is heading; the D operating section is the adjacent section to which the C operating section is heading.

[0123] Furthermore, the first migration condition judgment unit is configured to:

[0124] If the occupancy value of the logical vehicle 2 in the A operating section is greater than or equal to the preset occupancy threshold value of the A operating section, and the migration value of the logical vehicle 2 from the A operating section to the B operating section is greater than or equal to the preset migration threshold value from the A operating section to the B operating section, and the travel distance of the logical vehicle 1 in the B operating section is greater than or equal to the preset safety distance, it is determined that the logical vehicle 2 meets the preset migration condition from the A operating section to the B operating section; otherwise, it is determined that the logical vehicle 2 does not meet the preset migration condition from the A operating section to the B operating section;

[0125] The preset safety distance is the sum of the logical vehicle length and the preset safety protection distance.

[0126] Furthermore, the track circuit information includes: the relay drop time point, relay drop duration, and relay pick-up time point of each operating section;

[0127] The logical vehicle operation information acquisition unit includes:

[0128] A first time and a second time determining module is configured to search from the track circuit information for a first time point at which the relay of the B operating section remains in an attracted state and the relay of the A operating section falls, which immediately follows the current time, and a second time point at which the relay of the A operating section remains in an attracted state and the relay of the B operating section falls;

[0129] a module for determining a migration value of the logical vehicle 1 from the A to B section, configured to use the value at the second time point minus the first time point as the migration value of the logical vehicle 1 from the A operation section to the B operation section;

[0130] a logic vehicle one B section entry speed determination module, configured to obtain an entry speed of the logic vehicle one from the A operation section to the B operation section by dividing the body length of the logic vehicle one by the migration value of the logic vehicle one from the A operation section to the B operation section;

[0131] a module for determining the distance traveled by the logical vehicle 1 in section B, configured to multiply the value obtained by subtracting the second time from the current time by the entrance speed of the logical vehicle 1 when entering the B operating section from the A operating section to obtain the distance traveled by the logical vehicle 1 in the B operating section;

[0132] a third time and fourth time determination module configured to search, from the track circuit information, a third time point occurring after the second time point at which the relay of the B operating section remains down and the relay of the preceding operating section of the A operating section remains down and the relay of the A operating section is down, and a fourth time point occurring after the third time point at which the relay of the B operating section remains down and the relay of the A operating section remains down and the relay of the preceding operating section of the A operating section is up;

[0133] a module for determining a migration value for the logical vehicle 2 entering the A segment, configured to use a value at the fourth time point minus the third time point as a migration value for the logical vehicle 2 entering the A segment from the previous segment of the A segment;

[0134] a module for determining an entry speed of the logical vehicle 2 entering the A section, configured to obtain an entry speed of the logical vehicle 2 entering the A section from the previous section of the A section by dividing the vehicle length of the logical vehicle 2 by the migration value of the logical vehicle 2 entering the A section from the previous section of the A section;

[0135] a logic car 2 A section occupancy value determination module, configured to search the track circuit information for a fifth time point after the fourth time point at which the relay of the B operating section remains down and the relay of the A operating section is up, and to subtract the third time point from the fifth time point to obtain a value as the occupancy value of the logic car 2 in the A operating section;

[0136] a module for determining the operating time of logical vehicle 2 in segment A, configured to divide the length of segment A by the entrance speed of logical vehicle 2 when entering segment A from the segment immediately preceding segment A, to determine the operating time of logical vehicle 2 in segment A; wherein the operating time of logical vehicle 2 in segment A is the time required for the head of logical vehicle 2 to move from the starting point of segment A to the end point of segment A;

[0137] The module for determining the migration value of the logical vehicle 2 entering the B section is used to use the occupancy value of the logical vehicle 2 in the A operating section minus the operating time of the logical vehicle 2 in the A operating section to obtain the migration value of the logical vehicle 2 from the A operating section to the B operating section.

[0138] The above technical solutions of the embodiments of the present invention are described in detail below with reference to specific application examples. For technical details not introduced during the implementation process, please refer to the relevant description above.

[0139] Definitions of Abbreviations and Key Terms:

[0140] Bad shunt: A track circuit fault phenomenon in which a train is in a certain track section and the relay of the track section remains energized, failing to correctly reflect the train's section information.

[0141] Fault occupation: A track circuit fault phenomenon in which a train is not in a certain track section, but the relay in that track section falls, indicating that there is a train.

[0142] Logical train presence: A train that is identified through dynamic recording and processing of multiple track circuit levels, validity judgment, and a combination of three-point inspection and rational inspection (occupancy (use) threshold and migration threshold) is called a logical train presence.

[0143] Shunt failure recovery: The system's logical vehicle presence does not meet the rationality check and the identified logical vehicle presence section or track circuit section is a shunt failure section. When the logical vehicle presence ahead is identified, the previously identified shunt failure section is restored and available.

[0144] Block section: The track circuit between two signals in the same direction is a block section; it usually consists of one or more track circuits. Generally, only one train is allowed to exist in the same block section (except for trains in moving block mode);

[0145] Moving block mode train (moving block train): a moving block train equipped with a moving block vehicle, whose driving permit is authorized by the RBC, and whose multiple trains can run in a block section or a track section;

[0146] Non-moving block mode train (C2 train): Based on track circuit and balise information, an EMU train equipped with C2 vehicles. Under traditional technology, multiple trains cannot enter a block section, and C2 trains cannot be in the same block section with moving block mode trains at the same time.

[0147] Dual-function integration: It can provide ground infrastructure for both moving block and C2 train modes, ensuring normal operation of the ground infrastructure in any train mode.

[0148] SA: refers to signal permission. There is only one train within the scope of an SA. If there is no train in the section, when the departure route is processed at the station, the SA extends from the departure route to the entrance signal of the next station. If there is a track section occupied in the section, the SA extends from the departure route to the entrance of the track section.

[0149] Three-point inspection principle: When a track section needs to be unlocked, the following three conditions must be met. The first check: the train has occupied and cleared the approaching section of the track section, that is, check that the train has traveled normally from the previous adjacent section, and the section is not occupied due to other abnormal circumstances. The second check: the train has occupied and cleared the track section, indicating that the train has completed the travel process in this section and the section is now idle. The third check: the train has entered the next section, indicating that the train occupies the track sections in sequence according to the normal direction of operation, rather than staying in this section or traveling back.

[0150] RBC stands for Radio Block Center. It is a wireless communication-based train control system and a core component of high-speed rail train control systems. It exchanges information with trains in real time via wireless communication. Based on the train's location, speed, route, dispatching commands, and route status, it dynamically calculates and transmits the train's moving authorization (MA). It also manages train registration and deregistration, monitors train location, and transmits temporary speed limit commands to ensure safe train operation.

[0151] Under traditional technology, the interval logic occupancy check based on track circuit is within a SA (signal permission) range (e.g. Figure 3 At time T0, for train 1 ( Figure 3The box with 1 in it indicates that there is a logical vehicle. For SA, the range is the range from train 1 to the entrance of the block section E in the direction of operation, and the farthest can be the entrance signal of the next station. If the occupancy of the track section does not meet the three-point inspection principle, the section will be marked as a poor branching section and an alarm will be issued. In this case, if the logical vehicle can be determined and identified through the three-point inspection in the direction of operation and within the SA range, the section that has occurred and marked as a poor branching section can be restored to use. SA is dynamically extended as the preceding vehicle moves. With the development of railway technology, especially the research and application of mobile block technology, under the mobile block dual-function fusion line based on track circuits, RBC can authorize multiple trains (mobile block trains) to move to a block section (multiple track sections or one track section, for example). Figure 3 The circle in the figure represents a signal, and the space between two signals forms a block section) or even a track section. However, using the existing three-point check, in this case, since the SA range is 0, the train occupancy information disappears, and the signal equipment reports "bad branching" for the track section or block section where the train is missing: Figure 3 As shown in the figure, at time T3, Train 2 enters the section where Train 1 is located. Train 2's SA is at the entrance of the block section where Train 1 is located, but Section A where Train 2 is located has changed from occupied to free. At this time, the equipment falsely reports a poor shunt in Section A through the "section logic check." This will require subsequent manual intervention, or manual confirmation or dispatch authorization to restore the availability of the section marked as poor shunt after passing through the section or block section in guidance mode, reducing transportation efficiency.

[0152] The above-mentioned traditional technology has the following defects: 1) It falsely reports poor track circuit section branching, which does not increase the safety of the system; 2) It increases the workload of personnel confirmation and reduces transportation efficiency; 3) It does not meet the mixed operation scenario of moving block trains and C2 trains under moving block system; 4) It restricts and limits the tight tracking advantage of moving block trains under moving block system.

[0153] Interval logic occupancy check method under traditional technology:

[0154] As the departure route is processed, the system allocates a SA to ensure that there is only one car within the SA range. The SA extends to the block section entrance occupied by the track section within the interval or the range of the next station signal. If the interval is free, the SA range is to the next station signal.

[0155] The logical occupancy check of the section means that only one train can enter the same block section. When a train enters a block section, the block section is occupied and the signal points protecting the block section are prohibited from signaling.

[0156] If a train is running in the section when the system is started, the system cannot identify the logical train, cannot allocate SA, cannot determine whether the section has a bad branch; nor can it determine whether the section track circuit is occupied by a fault;

[0157] If the system identifies a poor branch within an SA range and the conditions for automatic recovery are not met, manual confirmation is required before dispatch intervention is required to restore the availability of the poor branch section;

[0158] The system's three-point check and rationality check were insufficient. Meeting the three-point check does not guarantee that the train has actually entered the next section. A malfunctioning relay (consistent with the train's apparent operation) could cause the train to travel at high speed, yet the system confirms it is normal.

[0159] Traditional interval logic checking has the following unresolved issues:

[0160] 1) SA cannot be extended into block sections or track sections and cannot handle trains in moving blocks. Figure 3 and Figure 4 ;

[0161] 2) The logical occupancy check of the section adopts the block partition state and is not processed according to the track section, resulting in the inability to track into the block partition. Figure 3 ;

[0162] 3) Even if it is handled according to the track section, it cannot be handled for multiple trains entering the same track section (the length of which is sufficient to accommodate multiple trains and the distance between trains is safe). See Figure 4 ;

[0163] 4) When the system is started, if there is a train in the section, the system cannot allocate SA for the train in the section, nor can it identify the poor branching caused by the train in the section. Since there is no logical vehicle identification, it cannot identify the track circuit fault occupation fault that occurs in the section at this time.

[0164] The traditional method does not solve the problem of multiple trains entering a track section or a block section (including the technical principles of interval logic occupancy checking).

[0165] The embodiments of the present invention provide a method and apparatus for multiple trains entering a section based on a track circuit, to solve at least one of the following problems:

[0166] 1) Solve the problem that when multiple moving block trains enter a block section or a track section, the system will not mistakenly report that the track circuit branch is faulty.

[0167] 2) Multiple moving block trains are mixed in a block section or a track section, or during the mixed operation, one or more moving block trains lose communication with the RBC and switch to C2 train mode to continue mixed operation. As the trains run, the logical trains can be automatically selected in sequence.

[0168] The embodiments of the present invention solve the problem of realizing train occupancy check based on track circuits, and the use of the "section logic occupancy check" method cannot solve the problem of "bad branching" caused by multiple trains (moving block) entering a block section or a track section in the mixed operation scenario of EMUs (C2) and moving block trains (CY), and false alarms of multiple trains entering a track section or a block section. Without reducing system safety, the false alarms of poor track circuit branching in the case of "multiple trains entering a block section or a track section" are eliminated, thereby improving system availability, not reducing transportation efficiency, and providing technical support for capacity expansion and efficiency improvement.

[0169] like Figure 5 As shown, relative to the running direction, the section that the train leaves first is the previous section; the section where the train is located is the current section; and the section that the train is about to go to along the running direction is the next section.

[0170] Fully utilizing the train length, assuming it is L0, and the time when two adjacent track sections are simultaneously occupied is t1, the time when the previous section changes from occupied to free is t2, and the time when the train becomes free in the current section (assuming it is L1) is t3. Based on this information, the train's migration speed in the adjacent track section can be determined (v0 = L0 / (t2-t1)), that is, the train's entry speed into the current section. If it is determined that (t3-t2) is greater than or equal to tm, the train enters the next section. Where tm is the train's occupation threshold in the current section.

[0171] The method for determining the occupancy threshold value of any track section is (the length of the track section + 2*the length of the train body) / (the lowest speed value between the line speed and the maximum allowable speed of the train); the migration threshold value for entering the destination track section from the incoming track section of the adjacent track section is the length of the train body / (the lowest speed value between the line speed and the maximum allowable speed of the train).

[0172] The above method can not only identify logically occupied vehicles; it can also identify logical vehicles in a section if a train is running in the section when the system is started. After identifying a logically occupied vehicle, it can determine whether a track circuit fault (bad branching or faulty occupancy) has occurred in the section. It can also be combined with the interlocking departure route processing. When the occupancy value of the first departing section is not less than its occupancy threshold value, and the migration value from the first departing section to the second departing section is not less than its migration threshold value, the logically occupied vehicle will enter the second departing section as a whole, thereby quickly locking the logical vehicle.

[0173] The average speed of the logical vehicle entering the migration section is determined by the migration value (if the vehicle length is L0 and the migration time is t0, then the migration speed v0 = L0 / t0);

[0174] Determine the occupancy time value of each logical vehicle (multiple trains) in the same section through each migration speed and / or level information (i.e., recorded track circuit information);

[0175] Determine the legal value (occupancy threshold or migration threshold) for the train to enter the next section; if the occupancy value is not less than the legal occupancy threshold, the train enters the next track section (the next section may be occupied or vacant); if the occupancy value is less than the legal occupancy threshold, the train is not properly divided in this section;

[0176] Logical vehicles enter the same track section in the running direction in sequence, in accordance with first-in-first-out. Retreating is not considered within the scope of the present invention.

[0177] By using the level of the track section in front of the running direction, it can be determined that the occupied (occupied) logical trains are running in sequence. If the interval is one track section, two logical trains can be distinguished.

[0178] Embodiments of the present invention relate to the field of railway technology, and in particular to a method and device for multiple trains entering the same operating section based on a track circuit. The method and device are based on a track circuit to realize a moving block train under train occupancy check and C2 / C3 mixed operation, and multiple trains (moving block trains) enter the same operating section without the system falsely alarming.

[0179] like Figure 4 As shown, the black circle represents the signal point prohibition signal (indicating that the block section is occupied), and the hollow circle represents the signal point permission signal (indicating that the block section is idle).

[0180] At time t0, train 1 (logically car one) is located in section A (track section A), the relay in section A remains down, and the relay in section B remains up.

[0181] At time t1 (the first time point), the front of train 1 just enters section B ( Figure 4 In order to clearly indicate that train 1 occupies sections on both sides at the same time, train 1 is drawn as straddling the two sections. The relay in section A remains down, and the relay in section B does. Due to the length of the train body, the train briefly presses on both the end of section A and the beginning of section B, causing the relays in sections A and B to remain down. At time t2 (the second time point), the tail of train 1 leaves section A, and the entire train enters section B. The relay in section A is then pulled up, and the relay in section B remains down.

[0182] If the migration value of train 1 from section A to section B is greater than or equal to its migration threshold, then train 1 enters section B;

[0183] At times t2 and t3, train 1 is in section B;

[0184] At time t3 (the third time point), the relay of section B remains down and the relay of the previous track section of section A remains down and the relay of section A falls, and at the fourth time point, the relay of section B remains down and the relay of section A remains down and the relay of the previous track section of section A rises, at this time, train 2 enters section A from the previous track section of section A; train 1 is in section B, assuming that the length of section A is L1, assuming that the length of train 2 is L2, the migration value of train 2 from the previous section of section A to section A is greater than or equal to its threshold value, then the speed v0 of train 2 entering A can be obtained, and train 2 runs in section A at this speed v0. The running time required for the front of train 2 to move from the beginning of section A to the end of section A is tg, tg=L1 / V0.

[0185] At time t4, train 2 (logically car 2) is located in section A.

[0186] At time t5 (the fifth time point, i.e., the current time), the relay in Section B remains down while the relay in Section A is pulled up. At this point, the complete train 2 leaves Section A and enters Section B. Since the relay in Section B remains down during the transition from Section A to Section B, the migration value of Train 2 from Section A to Section B cannot be directly obtained from the relay status information. Therefore, the value of the fifth time point minus the third time point minus tg is used as the estimated migration value of Train 2 from Section A to Section B. If this migration value is greater than or equal to the migration threshold for Train 2 from Section A to Section B, then the entrance velocity of Train 2 into Section B is L2 / (fifth time point minus third time point minus tg) = V 1. The value obtained according to (body length of train 2*2+length of section B) / V1 is used as the occupancy value of train 2 in section B. Based on the comparison between the occupancy value and the occupancy threshold value of train 2 in section B, it can be determined whether train 2 has left section B and entered section C. Specifically, if the occupancy value is greater than or equal to the occupancy threshold value of train 2 in section B, and the migration value of train 2 from section B to section C is greater than or equal to the corresponding migration threshold value, it can be determined that train 2 has entered section C from section B and section B is available.

[0187] At time t5, train 2 enters section B, and train 1 is in section B.

[0188] At time t6, train 1 enters section C and train 2 is in section B;

[0189] At t7 and t8, the occupancy value of train 1 in section C is greater than or equal to its occupancy threshold, and the migration value from section C to section D is greater than or equal to its threshold. At t8, train 1 completely enters section D. At this point, it can be determined that logical train 1 is in section D and logical train 2 is in section B.

[0190] The embodiment of the present invention can be run on TIS or RBC or new equipment, collect and record track circuit representation information, perform logical train identification after validity processing, and provide the system with accurate shunt failure, fault occupancy alarm and shunt failure section recovery availability prompt based on the identified logical train.

[0191] The embodiments of the present invention have the following technical effects: for an operating line based on a track circuit for train occupancy inspection, if a moving block train enters the same block section or the same track section, no erroneous report of a bad branch will be given; and when entering a track circuit section, if the conditions are met, the logical sequence of the trains can be automatically selected and continuously tracked; the logical train tracking can be used for the entire line or only for sections; for a dual-function fusion line based on a track circuit, when a moving block train and a moving block train with a communication fault are mixed running in the same block section or the same track section, no erroneous report of a bad branch will be given for multiple trains entering one operating section.

[0192] It should be understood that the specific order or hierarchy of steps in the disclosed processes is an example of an exemplary method. Based on design preferences, it should be understood that the specific order or hierarchy of steps in the process can be rearranged without departing from the scope of the present disclosure. The accompanying method claims present elements of the various steps in an exemplary order and are not intended to be limited to the specific order or hierarchy described.

[0193] In the foregoing detailed description, various features are grouped together in a single embodiment to simplify the disclosure. This method of disclosure should not be interpreted as reflecting an intention that embodiments of the claimed subject matter require more features than are expressly recited in each claim. On the contrary, as reflected in the appended claims, the invention comprises less than all the features of any individual disclosed embodiment. The appended claims are hereby expressly incorporated into the detailed description, with each claim standing on its own as a separate preferred embodiment of the invention.

[0194] The above description of the disclosed embodiments is intended to enable any person skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other embodiments without departing from the spirit and scope of the present disclosure. Therefore, the present disclosure is not limited to the embodiments presented herein but is intended to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0195] The above description includes examples of one or more embodiments. Of course, it is impossible to describe all possible combinations of components or methods for the purpose of describing the above embodiments, but it will be appreciated by those skilled in the art that the various embodiments may be further combined and arranged. Therefore, the embodiments described herein are intended to encompass all such changes, modifications and variations that fall within the scope of protection of the appended claims. In addition, to the extent the term "comprising" is used in the specification or claims, the term is intended to be encompassed in a manner similar to the term "including". In addition, any use of the term "or" in the specification of the claims is intended to mean a "non-exclusive or".

[0196] Those skilled in the art will also appreciate that the various illustrative logical blocks, units, and steps listed in the embodiments of the present invention can be implemented by electronic hardware, computer software, or a combination of the two. To clearly demonstrate the interchangeability of hardware and software, the various illustrative components, units, and steps described above have generally described their functions. Whether such functions are implemented by hardware or software depends on the specific application and the design requirements of the entire system. Those skilled in the art may use various methods to implement the described functions for each specific application, but such implementation should not be understood as exceeding the scope of protection of the embodiments of the present invention.

[0197] The various illustrative logic blocks or units described in the embodiments of the present invention can be implemented or operated by a general-purpose processor, a digital signal processor, an application-specific integrated circuit (ASIC), a field programmable gate array or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof. The general-purpose processor can be a microprocessor, and optionally, the general-purpose processor can also be any conventional processor, controller, microcontroller or state machine. The processor can also be implemented by a combination of computing devices, such as a digital signal processor and a microprocessor, a plurality of microprocessors, one or more microprocessors combined with a digital signal processor core, or any other similar configuration.

[0198] The steps of the methods or algorithms described in the embodiments of the present invention may be directly embedded in hardware, a software module executed by a processor, or a combination of the two. The software module may be stored in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, a hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. For example, the storage medium may be connected to the processor so that the processor can read information from the storage medium and write information to the storage medium. Alternatively, the storage medium may also be integrated into the processor. The processor and storage medium may be provided in an ASIC, which may be provided in a user terminal. Alternatively, the processor and storage medium may also be provided in different components in the user terminal.

[0199] In one or more exemplary designs, the above-mentioned functions described in the embodiments of the present invention can be implemented in hardware, software, firmware, or any combination of the three. If implemented in software, these functions can be stored on a computer-readable medium or transmitted in the form of one or more instructions or codes on a computer-readable medium. Computer-readable media include computer storage media and communication media that facilitate the transfer of computer programs from one location to another. Storage media can be any available medium that can be accessed by a general or special computer. For example, such computer-readable media can include but are not limited to RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to carry or store program code in the form of instructions or data structures and other forms that can be read by a general or special computer, or a general or special processor. In addition, any connection can be appropriately defined as a computer-readable medium. For example, if the software is transmitted from a website, server or other remote resource via a coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless methods such as infrared, wireless, and microwave, it is also included in the definition of computer-readable media. The disks and discs mentioned above include compact disks, laser disks, optical disks, DVDs, floppy disks, and Blu-ray discs. Disks typically reproduce data magnetically, while discs typically reproduce data optically with lasers. Combinations of the above may also be included in computer-readable media.

[0200] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A method for multiple trains entering the same operating section based on track circuits, characterized in that: include: Real-time recording of track circuit information of relays dropping and picking up in multiple operating sections of the track circuit; When it is determined based on the track circuit information that two adjacent operating sections among the plurality of operating sections are logically occupied by vehicles, in response to the relay of operating section A being energized, a travel distance of logically occupied vehicle one within operating section B, an occupancy value of logically occupied vehicle two in operating section A, and a migration value from operating section A to operating section B are determined based on the track circuit information; determining whether the logically occupied vehicle 2 meets a preset migration condition from the operating section A to the operating section B based on the travel distance of the logically occupied vehicle 1 in the operating section B, the occupancy value of the logically occupied vehicle 2 in the operating section A, and the migration value from the operating section A to the operating section B; If it is determined that the logical vehicle 2 meets the preset migration condition from the operating section A to the operating section B, confirming that the logical vehicle 2 has entered the operating section B from the operating section A, and setting the operating section A to be available; Among them, the two adjacent operating sections are respectively the A operating section and the B operating section, the A operating section is located in the direction of the train, and the B operating section is located in the direction of the train; when determining that two adjacent operating sections among the multiple operating sections are logically occupied by vehicles, the logical vehicle one is located in the B operating section, and the logical vehicle two is located in the A operating section; the operating sections include track sections or block sections.

2. The method for multiple trains entering the same operating section based on a track circuit according to claim 1, characterized in that: The method further comprises: When it is determined that the logic vehicle 2 does not meet the preset migration condition from the A operation section to the B operation section, the A operation section is set to be a poor branching.

3. The method for multiple trains entering the same operating section based on a track circuit according to claim 1 or 2, characterized in that: The method further comprises: In the case where the relay of the B operating section remains in the down state, in response to the relay of the D operating section being down, determining the occupancy value of the logical vehicle 1 in the C operating section and the migration value from the C operating section to the D operating section according to the track circuit information; Determining whether the occupancy value of the logical vehicle 1 in the C operating section is greater than or equal to a preset occupancy threshold value of the C operating section, and whether the migration value of the logical vehicle 1 from the C operating section to the D operating section is greater than or equal to a preset migration threshold value from the C operating section to the D operating section; If it is determined that the occupancy value of the logical vehicle 1 in the C operating section is greater than or equal to the preset occupancy threshold value of the C operating section, and the migration value of the logical vehicle 1 from the C operating section to the D operating section is greater than or equal to the preset migration threshold value from the C operating section to the D operating section, confirm that the logical vehicle 1 is located in the D operating section, the logical vehicle 2 is located in the B operating section, and set the A operating section to be available; Among them, the C operating section is the adjacent section to which the B operating section is heading; the D operating section is the adjacent section to which the C operating section is heading.

4. The method for multiple trains entering the same operating section based on a track circuit according to claim 1, characterized in that: Determining whether the logically occupied vehicle 2 meets a preset migration condition from the operating section A to the operating section B based on the travel distance of the logically occupied vehicle 1 in the operating section B, the occupancy value of the logically occupied vehicle 2 in the operating section A, and the migration value from the operating section A to the operating section B includes: If the occupancy value of the logical vehicle 2 in the A operating section is greater than or equal to the preset occupancy threshold value of the A operating section, and the migration value of the logical vehicle 2 from the A operating section to the B operating section is greater than or equal to the preset migration threshold value from the A operating section to the B operating section, and the travel distance of the logical vehicle 1 in the B operating section is greater than or equal to the preset safety distance, it is determined that the logical vehicle 2 meets the preset migration condition from the A operating section to the B operating section; otherwise, it is determined that the logical vehicle 2 does not meet the preset migration condition from the A operating section to the B operating section; The preset safety distance is the sum of the logical vehicle length and the preset safety protection distance.

5. The method for multiple trains entering the same operating section based on a track circuit as claimed in claim 1, characterized in that: The track circuit information includes: the relay drop time point, relay drop duration, and relay pick-up time point of each operating section; Determining, based on the track circuit information, a travel distance of a logically occupied vehicle 1 within the operating section B, an occupancy value of a logically occupied vehicle 2 in the operating section A, and a migration value from the operating section A to the operating section B, including: Searching from the track circuit information the first time point at which the relay of the B operating section remains in the attracted state and the relay of the A operating section falls, which immediately occurs before the current time, and the second time point at which the relay of the A operating section remains in the fallen state and the relay of the B operating section falls, which immediately occurs after the relay of the A operating section remains in the attracted state and the relay of the B operating section falls; The value of the second time point minus the first time point is used as the migration value of the logic vehicle 1 from the A operation section to the B operation section; The entrance speed of the logical vehicle 1 entering the B operation section from the A operation section is obtained by dividing the vehicle body length of the logical vehicle 1 by the migration value of the logical vehicle 1 entering the B operation section from the A operation section; The value obtained by subtracting the second time from the current time is multiplied by the entry speed of the logical vehicle 1 from the operation section A to the operation section B to obtain the travel distance of the logical vehicle 1 in the operation section B; Searching the track circuit information for a third time point occurring after the second time point at which the relay of the B operating section remains down, the relay of the preceding operating section of the A operating section remains down, and the relay of the A operating section is down, and a fourth time point occurring after the third time point at which the relay of the B operating section remains down, the relay of the A operating section remains down, and the relay of the preceding operating section of the A operating section is up; The value of the fourth time point minus the third time point is used as the migration value of the logic vehicle 2 entering the A operation segment from the previous operation segment of the A operation segment; The vehicle body length of the logical vehicle 2 is divided by the migration value of the logical vehicle 2 entering the A operation segment from the previous operation segment of the A operation segment to obtain the entry speed of the logical vehicle 2 entering the A operation segment from the previous operation segment of the A operation segment; Searching the track circuit information for a fifth time point after the fourth time point at which the relay of the B operating section remains down and the relay of the A operating section is up, and subtracting the third time point from the fifth time point to obtain a value as the occupancy value of the logical vehicle 2 in the A operating section; The running time of the logical vehicle 2 in the A running section is obtained by dividing the length of the A running section by the entry speed of the logical vehicle 2 when entering the A running section from the running section immediately preceding the A running section. The running time of the logical vehicle 2 in the A running section is the time required for the head of the logical vehicle 2 to move from the starting point of the A running section to the end point of the A running section. The migration value of the logical vehicle 2 from the A running section to the B running section is obtained by subtracting the running time of the logical vehicle 2 in the A running section from the occupancy value of the logical vehicle 2.

6. A device for multiple trains entering the same operating section based on a track circuit, characterized in that: include: Track information acquisition unit, used to record track circuit information of multiple operating section relays dropping and picking up in real time; a logical vehicle operation information acquisition unit, configured to, in response to the relay of operation section A being activated, determine, based on the track circuit information, a travel distance of logically occupied vehicle one within operation section B, an occupancy value of logically occupied vehicle two in operation section A, and a migration value from operation section A to operation section B, when it is determined based on the track circuit information that two adjacent operation sections among the plurality of operation sections are logically occupied; a first migration condition judgment unit, configured to judge whether the logically occupied vehicle 2 meets a preset migration condition for entering the operating section B from the operating section A based on the travel distance of the logically occupied vehicle 1 in the operating section B, the occupancy value of the logically occupied vehicle 2 in the operating section A, and the migration value from the operating section A to the operating section B; a first migration result determining unit for, upon determining that the second logical vehicle meets a preset migration condition for entering the B operating section from the A operating section, confirming that the second logical vehicle has entered the B operating section from the A operating section, and setting the A operating section as available; Among them, the two adjacent operating sections are respectively the A operating section and the B operating section, the A operating section is located in the direction of the train, and the B operating section is located in the direction of the train; when determining that two adjacent operating sections among the multiple operating sections are logically occupied by vehicles, the logical vehicle one is located in the B operating section, and the logical vehicle two is located in the A operating section; the operating sections include track sections or block sections.

7. The device for multiple trains entering the same operating section based on a track circuit as claimed in claim 6, characterized in that: The device further comprises: The second migration result determination unit is used to set the A operation section to be a poor branching when it is determined that the logical vehicle 2 does not meet the preset migration conditions from the A operation section to the B operation section.

8. The device for multiple trains entering the same operating section based on a track circuit according to claim 6 or 7, characterized in that: The device further comprises: a C section occupancy value and migration value determining unit, configured to determine, in response to the relay in the D operating section being dropped, an occupancy value of the logical vehicle 1 in the C operating section and a migration value from the C operating section to the D operating section based on the track circuit information, while the relay in the B operating section remains in the dropped state; a second migration condition judgment unit, configured to judge whether the occupancy value of the logical vehicle 1 in the C operating section is greater than or equal to a preset occupancy threshold value of the C operating section, and whether the migration value of the logical vehicle 1 from the C operating section to the D operating section is greater than or equal to a preset migration threshold value from the C operating section to the D operating section; a third migration result determining unit, configured to, if it is determined that the occupancy value of the logically available vehicle one in the operating section C is greater than or equal to the preset occupancy threshold value of the operating section C, and the migration value of the logically available vehicle one from the operating section C to the operating section D is greater than or equal to the preset migration threshold value from the operating section C to the operating section D, confirm that the logically available vehicle one is located in the operating section D, the logically available vehicle two is located in the operating section B, and set the operating section A to be available; Among them, the C operating section is the adjacent section to which the B operating section is heading; the D operating section is the adjacent section to which the C operating section is heading.

9. The device for multiple trains entering the same operating section based on a track circuit as claimed in claim 6, characterized in that: The first migration condition judgment unit is configured to: If the occupancy value of the logical vehicle 2 in the A operating section is greater than or equal to the preset occupancy threshold value of the A operating section, and the migration value of the logical vehicle 2 from the A operating section to the B operating section is greater than or equal to the preset migration threshold value from the A operating section to the B operating section, and the travel distance of the logical vehicle 1 in the B operating section is greater than or equal to the preset safety distance, it is determined that the logical vehicle 2 meets the preset migration condition from the A operating section to the B operating section; otherwise, it is determined that the logical vehicle 2 does not meet the preset migration condition from the A operating section to the B operating section; The preset safety distance is the sum of the logical vehicle length and the preset safety protection distance.

10. The device for multiple trains entering the same operating section based on a track circuit as claimed in claim 6, characterized in that: The track circuit information includes: the relay drop time point, relay drop duration, and relay pick-up time point of each operating section; The logical vehicle operation information acquisition unit includes: A first time and a second time determining module is configured to search from the track circuit information for a first time point at which the relay of the B operating section remains in an attracted state and the relay of the A operating section falls, which immediately follows the current time, and a second time point at which the relay of the A operating section remains in an attracted state and the relay of the B operating section falls; a module for determining a migration value of the logical vehicle 1 from the A to B section, configured to use the value at the second time point minus the first time point as the migration value of the logical vehicle 1 from the A operation section to the B operation section; a logic vehicle one B section entry speed determination module, configured to obtain an entry speed of the logic vehicle one from the A operation section to the B operation section by dividing the body length of the logic vehicle one by the migration value of the logic vehicle one from the A operation section to the B operation section; a module for determining the distance traveled by the logical vehicle 1 in section B, configured to multiply the value obtained by subtracting the second time from the current time by the entrance speed of the logical vehicle 1 when entering the B operating section from the A operating section to obtain the distance traveled by the logical vehicle 1 in the B operating section; a third time and fourth time determination module configured to search, from the track circuit information, a third time point occurring after the second time point at which the relay of the B operating section remains down and the relay of the preceding operating section of the A operating section remains down and the relay of the A operating section is down, and a fourth time point occurring after the third time point at which the relay of the B operating section remains down and the relay of the A operating section remains down and the relay of the preceding operating section of the A operating section is up; a module for determining a migration value for the logical vehicle 2 entering the A segment, configured to use a value at the fourth time point minus the third time point as a migration value for the logical vehicle 2 entering the A segment from the previous segment of the A segment; a module for determining an entry speed of the logical vehicle 2 entering the A section, configured to obtain an entry speed of the logical vehicle 2 entering the A section from the previous section of the A section by dividing the vehicle length of the logical vehicle 2 by the migration value of the logical vehicle 2 entering the A section from the previous section of the A section; a logic car 2 A section occupancy value determination module, configured to search the track circuit information for a fifth time point after the fourth time point at which the relay of the B operating section remains down and the relay of the A operating section is up, and to subtract the third time point from the fifth time point to obtain a value as the occupancy value of the logic car 2 in the A operating section; a module for determining the operating time of logical vehicle 2 in segment A, configured to divide the length of segment A by the entrance speed of logical vehicle 2 when entering segment A from the segment immediately preceding segment A, to determine the operating time of logical vehicle 2 in segment A; wherein the operating time of logical vehicle 2 in segment A is the time required for the head of logical vehicle 2 to move from the starting point of segment A to the end point of segment A; The module for determining the migration value of the logical vehicle 2 entering the B section is used to use the occupancy value of the logical vehicle 2 in the A operating section minus the operating time of the logical vehicle 2 in the A operating section to obtain the migration value of the logical vehicle 2 from the A operating section to the B operating section.

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