A group train station arrival interval time determination method and system
Patent Information
- Application Number
- CN202410328615.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-21
- Publication Date
- 2026-09-22
- Estimated Expiration
- 2044-03-21
AI Technical Summary
[0003]群组控制方式打破传统列车控制方式，一个群组内列车运行进路不同、运行速度不同，需要计算群组多个列车、甚至不同种类列车的到达间隔时间，因此传统的列车到达间隔确定方法已无法适用于群组控制下列车到达间隔时间的计算
[0029]本发明的群组列车车站到达间隔时间确定方法、系统，实现了一个群组内不同运行进路、不同运行速度的多种列车到达间隔时间的统一计算，验证了群组货物列车间的平均追踪间隔时间最小3min。对于开行5000t单元基本列的群组，重载列车群组运行控制系统的最大输送能力为42340万吨/年～59130万吨/年，比四显示信号系统(以5000t普通列车进行计算)的最大输送能力提高了100.00％～189.29％，比四显示信号系统(以10000t列车进行计算)的最大输送能力提高了22.27％～76.86％；对于开行10000t单元基本列的群组，重载列车群组运行控制系统的最大输送能力为65700万吨/年～78840万吨/年，比四显示信号系统(以10000t列车进行计算)的最大输送能力提高了96.51％～135.81％，比四显示信号系统(以20000t列车进行计算)的最大输送能力提高了33.93％～60.71％％，运输能力得到了极大的提升。
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Figure CN118182582B_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of train control, and specifically relates to a method and system for determining the station arrival interval of a group of trains. Background Technology
[0002] Traditional methods for determining train tracking intervals are based on the principle of single-train operation. The principle for calculating train arrival intervals is the interval between two trains of the same type with the same route and operating speed.
[0003] Group control breaks with traditional train control methods. Trains within a group have different routes and speeds, requiring the calculation of arrival intervals for multiple trains, or even different types of trains, within the group. Therefore, traditional methods for determining train arrival intervals are no longer applicable to calculating arrival intervals under group control.
[0004] This invention proposes a method and system for determining the arrival interval time of multiple trains in a group under the MB-VG control method, which integrates relative real-time speed, continuous spatial distance, and group adaptive adjustment. Summary of the Invention
[0005] To address the above problems, this invention proposes a method for determining the station arrival interval of group trains, the method comprising:
[0006] Obtain the average time of train operation within the space interval of the train tracking operation in the group, the station arrival operation time, the reserved adjustment margin, and the train arrival interval time of the existing signaling system;
[0007] The station arrival interval of the group trains is determined based on the average time of train operation within the space interval of the train tracking operation, the station arrival operation time, the reserved adjustment margin, and the train arrival interval of the existing signaling system.
[0008] Furthermore, obtaining the average time of train operation within the spatial interval of the group includes:
[0009] The distance from the first key position to the second key position, the average speed of the a-th train in the group within the tracking operation space interval, the monitoring distance of the (a+1)-th train in the group with the second key position as the target point calculated by the onboard ATP when the group train arrives, the length of the (a+1)-th train in the group when the group train arrives, and the average speed of the (a+1)-th train in the group within the tracking operation space interval are obtained.
[0010] The average time for trains to travel within the tracking space interval in the group is determined based on the distance from the first key position to the second key position, the average speed of the a-th train in the group within the tracking space interval, the monitoring distance with the second key position as the target point calculated by the onboard ATP of the (a+1)-th train in the group when the group train arrives, the length of the (a+1)-th train in the group when the group train arrives, and the average speed of the (a+1)-th train in the group within the tracking space interval.
[0011] Furthermore, the arrival of the group trains at the station includes continuous arrival on the same track and alternating arrival on different tracks.
[0012] Furthermore, when passengers arrive consecutively on the same track, both the first key position and the second key position are track-reverse exit signals.
[0013] Furthermore, when different tracks arrive alternately, the first critical position is the end point of the repeated route in the different track receiving routes; the second critical position is the end point of the first critical turnout after the end point of the repeated route in the different track receiving routes.
[0014] Furthermore, the station arrival interval of the group trains is expressed as follows:
[0015]
[0016] in, Indicates the arrival interval of the group of trains, in min; a represents the train number in the group when the group of trains arrives; b represents the total number of trains in the group when the group of trains arrives; L B_C (a+1) represents the distance from key location B to key location C when the group of trains arrives; L B (a+1) represents the monitoring distance calculated by the onboard ATP of the (a+1)th train in the group, with the key location B as the target point; L 列 (a+1) represents the length of the (a+1)th train in the group when the group of trains arrives; v 平均 (a) represents the average speed, in km / h, of the a-th train in the group during the tracking space interval when the group of trains arrives; This represents the station arrival time when a group of trains arrives. The value is 0 when train a and train a+1 in the group arrive on the same track; the value is 0.5 minutes when train a and train a+1 in the group arrive on different tracks. 余 (a+1) represents the reserved adjustment margin for the train tracking interval time in the group when the group trains arrive, min; I 到 This indicates the train arrival interval in minutes for the existing signaling system.
[0017] The present invention also provides a system for determining the station arrival interval of group trains, the system comprising an acquisition unit and a time determination unit.
[0018] The acquisition unit is used to acquire the average time of train operation within the train tracking space interval in the group, the station arrival operation time, the reserved adjustment margin, and the train arrival interval time of the existing signaling system.
[0019] The time determination unit is used to determine the station arrival interval of trains in the group based on the average running time within the train tracking space interval in the group, the station arrival operation time, the reserved adjustment margin, and the train arrival interval time of the existing signaling system.
[0020] Furthermore, the acquisition unit includes an acquisition module and a time determination module.
[0021] The acquisition module is used to acquire the distance from the first key position to the second key position, the average speed of the a-th train in the group within the tracking operation space interval, the monitoring distance of the a+1-th train in the group with the second key position as the target point calculated by the onboard ATP when the group train arrives, the length of the a+1-th train in the group when the group train arrives, and the average speed of the a+1-th train in the group within the tracking operation space interval.
[0022] The time determination module is used to determine the average time of the trains in the group within the tracking space interval based on the distance from the first key position to the second key position, the average speed of the a-th train in the group within the tracking space interval, the monitoring distance of the (a+1)-th train in the group with the second key position as the target point calculated by the onboard ATP when the group train arrives, the length of the (a+1)-th train in the group when the group train arrives, and the average speed of the (a+1)-th train in the group within the tracking space interval.
[0023] Furthermore, the arrival of the group trains at the station includes continuous arrival on the same track and alternating arrival on different tracks.
[0024] Furthermore, when passengers arrive consecutively on the same track, both the first key position and the second key position are track-reverse exit signals.
[0025] Furthermore, when different tracks arrive alternately, the first critical position is the end point of the repeated route in the different track receiving routes; the second critical position is the end point of the first critical turnout after the end point of the repeated route in the different track receiving routes.
[0026] Furthermore, the station arrival interval of the group trains is expressed as follows:
[0027]
[0028] in, Indicates the arrival interval of the group of trains, in min; a represents the train number in the group when the group of trains arrives; b represents the total number of trains in the group when the group of trains arrives; L B_C (a+1) represents the distance from key location B to key location C when the group of trains arrives; L B (a+1) represents the monitoring distance calculated by the onboard ATP of the (a+1)th train in the group, with the key location B as the target point; L 列 (a+1) represents the length of the (a+1)th train in the group when the group of trains arrives; v 平均 (a) represents the average speed, in km / h, of the a-th train in the group during the tracking space interval when the group of trains arrives; This represents the station arrival time when a group of trains arrives. The value is 0 when train a and train a+1 in the group arrive on the same track; the value is 0.5 minutes when train a and train a+1 in the group arrive on different tracks. 余 (a+1) represents the reserved adjustment margin for the train tracking interval time in the group when the group trains arrive, min; I 到 This indicates the train arrival interval in minutes for the existing signaling system.
[0029] The method and system for determining the station arrival interval of group trains of the present invention realizes the unified calculation of the arrival interval of multiple trains with different operating routes and different operating speeds within a group, and verifies that the average tracking interval between freight trains in the group is as low as 3 minutes. For train groups operating 5,000-ton basic unit trains, the maximum transport capacity of the heavy-haul train group operation control system is 423.4 million tons / year to 591.3 million tons / year, which is 100.00% to 189.29% higher than the maximum transport capacity of the four-signal system (calculated based on 5,000-ton ordinary trains), and 22.27% to 76.86% higher than the maximum transport capacity of the four-signal system (calculated based on 10,000-ton trains). For train groups operating 10,000-ton basic unit trains, the maximum transport capacity of the heavy-haul train group operation control system is 657 million tons / year to 788.4 million tons / year, which is 96.51% to 135.81% higher than the maximum transport capacity of the four-signal system (calculated based on 10,000-ton trains), and 33.93% to 60.71% higher than the maximum transport capacity of the four-signal system (calculated based on 20,000-ton trains), resulting in a significant improvement in transport capacity.
[0030] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures pointed out in the description, claims and drawings. Attached Figure Description
[0031] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0032] Figure 1 A schematic flowchart of the method for determining the station arrival interval of group trains in an embodiment of the present invention is shown;
[0033] Figure 2 A schematic diagram of the system structure for determining the station arrival interval of a group train in an embodiment of the present invention is shown;
[0034] Figure 3 This invention illustrates a schematic diagram of the calculation of arrival interval time for train groups on the same track in an embodiment of the present invention.
[0035] Figure 4 This invention illustrates a schematic diagram of the calculation of train arrival intervals for different track groups in an embodiment of the invention.
[0036] Figure 5 A schematic diagram illustrating the calculation of the tracking interval time for group trains in an embodiment of the present invention is shown.
[0037] Figure 6 This invention illustrates a schematic diagram of calculating the departure interval time of train groups on the same track in an embodiment of the present invention.
[0038] Figure 7 A schematic diagram illustrating the calculation of train departure intervals for different track group trains in an embodiment of the present invention is shown. Detailed Implementation
[0039] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0040] This invention provides a method for determining the station arrival interval of a group of trains. Figure 1 A schematic flowchart of the method for determining the station arrival interval of group trains in an embodiment of the present invention is shown. Figure 1 The method includes: obtaining the average running time within the train tracking operation space interval in the group, the station arrival operation time, the reserved adjustment margin, and the train arrival interval time of the existing signaling system; and determining the station arrival interval time of the group trains based on the average running time within the train tracking operation space interval in the group, the station arrival operation time, the reserved adjustment margin, and the train arrival interval time of the existing signaling system.
[0041] Specifically, obtaining the average time of train operation within the spatial interval of the group includes:
[0042] The distance from the first key position to the second key position, the average speed of the a-th train in the group within the tracking operation space interval, the monitoring distance of the (a+1)-th train in the group with the second key position as the target point calculated by the onboard ATP when the group train arrives, the length of the (a+1)-th train in the group when the group train arrives, and the average speed of the (a+1)-th train in the group within the tracking operation space interval are obtained.
[0043] The average time for trains to travel within the tracking space interval in the group is determined based on the distance from the first key position to the second key position, the average speed of the a-th train in the group within the tracking space interval, the monitoring distance with the second key position as the target point calculated by the onboard ATP of the (a+1)-th train in the group when the group train arrives, the length of the (a+1)-th train in the group when the group train arrives, and the average speed of the (a+1)-th train in the group within the tracking space interval.
[0044] Specifically, in this embodiment of the invention, the arrival of the group trains at the station includes continuous arrival on the same track and alternating arrival on different tracks.
[0045] Specifically, when the trains arrive consecutively on the same track, both the first key position and the second key position are track-reverse exit signals. Figure 3 This diagram illustrates the calculation of arrival interval time for train groups on the same track in an embodiment of the present invention. Figure 3 In the diagram, the train group consisting of {T01,T02} arrives at track IIIG, and the train group consisting of {T03,T04} arrives from the station entrance section at track IIIG where the train group {T01,T02} is parked. IIIG, IG, IIG, and 4G represent tracks, and XD, SIII, XIII, X, 0009, SI, XI, 0010, XF, SII, XII, S4, and X4 represent signals.
[0046] When trains arrive alternately on different tracks, the first critical position is the end point of the repeated route in the different track receiving routes; the second critical position is the end point of the first critical turnout after the end point of the repeated route in the different track receiving routes. Figure 4 This invention illustrates a schematic diagram of calculating the arrival interval time of trains on different track groups in an embodiment of the present invention. Figure 4 In the middle, the group train consisting of {T01,T02,T03,T04} arrives on track IIIG, and the group train consisting of {T05,T06,T07,T08} arrives from the station entry section on track 4G, which is a different track from where the group trains {T01,T02,T03,T04} are parked.
[0047] Figures 3-4 In the diagram, B(a) is a key position B. When train a and train a+1 in the group meet on the same track, this position is the reverse exit signal for the current track. When train a and train a+1 in the group meet on different tracks, this position is the end point of the repeated route in the different track meeting route. C(a) is a key position C. When train a and train a+1 in the group meet on the same track, this position is the reverse exit signal for the track. That is, when trains in the same track arrive at intervals, both key positions B and C are the reverse exit signals for the current track. When train a and train a+1 in the group meet on different tracks, this position is the end point of the first key turnout after the end point of the repeated route in the different track meeting route.
[0048] In this embodiment of the invention, the station arrival interval time of the group trains is expressed as:
[0049]
[0050] in, Indicates the arrival interval of the group of trains, in min; a represents the train number in the group when the group of trains arrives; b represents the total number of trains in the group when the group of trains arrives; L B_C (a+1) represents the distance from key location B to key location C when the group of trains arrives; L B (a+1) represents the monitoring distance calculated by the onboard ATP of the (a+1)th train in the group, with the key location B as the target point; L 列 (a+1) represents the length of the (a+1)th train in the group when the group of trains arrives; v 平均 (a) represents the average speed, in km / h, of the a-th train in the group during the tracking space interval when the group of trains arrives; This represents the station arrival time when a group of trains arrives. The value is 0 when train a and train a+1 in the group arrive on the same track; the value is 0.5 minutes when train a and train a+1 in the group arrive on different tracks. 余 (a+1) represents the reserved adjustment margin for the train tracking interval time in the group when the group trains arrive, min; I 到 This indicates the train arrival interval in minutes for the existing signaling system.
[0051] In this embodiment of the invention, the determination of the tracking interval time of the group train is also specifically explained. It should be noted that for a group of trains consisting of a single physical train, the tracking time of the group train is calculated in the same way as the tracking interval of the train. In this embodiment of the invention, the group train consisting of multiple physical trains is used for explanation.
[0052] I. Determining the Interval Time for Tracking Group Trains:
[0053] The train group tracking interval is composed of the train departure interval, arrival interval, and section tracking interval, and the largest of these is taken. Specifically:
[0054]
[0055] Among them, I 群 Indicates the tracking interval time for a group of trains, in min; Indicates the interval time for tracked trains in a group, in min; This indicates the station departure interval for a group of trains, in minutes. This indicates the station arrival interval for a train group, expressed in minutes.
[0056] II. Interval time for group train section tracking The determination
[0057] In this embodiment of the invention, Figure 5 This diagram illustrates the calculation of the tracking interval time for group trains in an embodiment of the present invention. Figure 5 In the middle, the leading group train Q001 {T01,T02,T03,T04} consists of four trains (in this embodiment of the invention, in order to clearly show the process of determining the interval of the group train section of the invention, the three trains T01, T02, and T03 of the leading group train are not drawn), and the following group train Q002 {T01,T02,T03,T04} consists of four trains.
[0058] The interval time for tracking trains in the group section is expressed as follows:
[0059]
[0060] in, This represents the interval time for group train tracking, where i represents the train number in the group during the interval tracking, j represents the total number of trains in the group during the interval tracking, and L... 监控 (i) represents the monitoring distance between the i-th train in a train group and the preceding train during section tracking, L 列 (i) represents the length of the i-th train in a train group during interval tracking, L 列 (i-1) represents the length of the (i-1)th train in the train group during section tracking, v 平均 (i) represents the average speed of the i-th train in a train group during interval tracking, t 余 (i) represents the reserved adjustment margin for the tracking interval time of the i-th train in the group of trains during section tracking, I 区 This indicates the train tracking interval time of the existing signaling system.
[0061] III. Departure Intervals for Group Trains
[0062] In this embodiment of the invention, the departure methods of group trains at stations include two types: departure on the same track and alternating departure on different tracks. Figure 6 This diagram illustrates the calculation of the departure interval time for train groups on the same track in an embodiment of the present invention. Figure 6 In the train, the group train consists of four trains {T01, T02, T03, T04}. 5G, IIIG, IG, IIG, and 4G represent tracks, X5, XIII, XI, XII, X4, SF, S, S5, SIII, SI, SII, S4, 0011, and 0012 represent signals. The group train is located on track 5G. Figure 7 This diagram illustrates the calculation of train departure intervals for different track group trains in an embodiment of the present invention. Figure 7 The trains include group trains located on track 5G and track 4G respectively. The group trains on track 5G consist of four trains {T01, T02, T03, T04}, while the group trains on track 4G consist of four trains {T05, T06, T07, T08}.
[0063] Figures 6-7 In the diagram, A(k) is a critical position A. When the k-th train and the (k+1)-th train in the group depart from the same track, this position is the end point of the short route protected by the departure signal; when the k-th train and the (k+1)-th train in the group depart from different tracks, this position is the starting point of the repeated route in the departure route on different tracks.
[0064] In this embodiment of the invention, the departure interval of group trains at stations Represented as:
[0065]
[0066] in, The interval between train departures from the station is expressed in min; h represents the track number occupied by the train at departure; m represents the total number of tracks occupied by the train at departure; k represents the number of trains in the current track at departure; L 列 (h, k) represents the length of the k-th train on the h-th track when the group of trains departs; L A (h, k) represents the distance from the stopping position of the k-th train on track h to the critical position A when the group of trains departs; v 平均 (h, k) represents the average speed of the k-th train on track h within the tracking space interval when the group train departs, in km / h; n(h, k) represents the total number of group trains on track h when the group train departs. Indicates the station departure operation time when a group of trains departs; t 余 This represents the allowance for adjusting the train tracking interval within a train group when the group of trains departs, in min; 发 This indicates the train departure interval of the existing signaling system, in minutes.
[0067] IV. Station arrival intervals for group trains
[0068] The determination of the station arrival interval time of group trains in this embodiment of the invention has been explained above and will not be repeated here.
[0069] This invention also provides a system for determining the station arrival interval of group trains. Figure 2 A schematic diagram of the system structure for determining the station arrival interval of group trains in an embodiment of the present invention is shown. Figure 2 The system includes an acquisition unit and a time determination unit. The acquisition unit is used to acquire the average running time of trains within the space interval of train tracking in the group, the station arrival operation time, the reserved adjustment margin, and the train arrival interval time of the existing signaling system. The time determination unit is used to determine the station arrival interval time of the group trains based on the average running time of trains within the space interval of train tracking in the group, the station arrival operation time, the reserved adjustment margin, and the train arrival interval time of the existing signaling system.
[0070] Specifically, the acquisition unit includes an acquisition module and a time determination module.
[0071] The acquisition module is used to acquire the distance from the first key position to the second key position, the average speed of the a-th train in the group within the tracking operation space interval, the monitoring distance of the a+1-th train in the group with the second key position as the target point calculated by the onboard ATP when the group train arrives, the length of the a+1-th train in the group when the group train arrives, and the average speed of the a+1-th train in the group within the tracking operation space interval.
[0072] The time determination module is used to determine the average time of the trains in the group within the tracking space interval based on the distance from the first key position to the second key position, the average speed of the a-th train in the group within the tracking space interval, the monitoring distance of the (a+1)-th train in the group with the second key position as the target point calculated by the onboard ATP when the group train arrives, the length of the (a+1)-th train in the group when the group train arrives, and the average speed of the (a+1)-th train in the group within the tracking space interval.
[0073] Specifically, the arrival of the group of trains at the station includes continuous arrival on the same track and alternating arrival on different tracks.
[0074] Specifically, when the trains arrive consecutively on the same track, both the first key position and the second key position are track-reverse exit signals.
[0075] Specifically, when different tracks arrive alternately, the first critical position is the end point of the repeated route in the different track receiving routes; the second critical position is the end point of the first critical turnout after the end point of the repeated route in the different track receiving routes.
[0076] This invention also provides an electronic device, which includes at least one processor and at least one memory, wherein the memory is data-connected to the processor.
[0077] The memory stores instructions that can be executed by the at least one processor, which, when executed, enable the at least one processor to perform the group train station arrival interval determination method described in this embodiment of the invention.
[0078] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims
1. A method for determining the station arrival interval of a group of trains, characterized in that, The method includes: Obtain the average time of train operation within the space interval of the train tracking operation in the group, the station arrival operation time, the reserved adjustment margin, and the train arrival interval time of the existing signaling system; The station arrival interval of the group trains is determined based on the average running time within the train tracking space interval in the group, the station arrival operation time, the reserved adjustment margin, and the train arrival interval time of the existing signaling system. The average time taken to travel within the space interval of train tracking within the group includes: The distance from the first key position to the second key position, the average speed of the a-th train in the group within the tracking operation space interval, the monitoring distance of the (a+1)-th train in the group with the second key position as the target point calculated by the onboard ATP when the group train arrives, the length of the (a+1)-th train in the group when the group train arrives, and the average speed of the (a+1)-th train in the group within the tracking operation space interval are obtained. The average time for trains to travel within the tracking space interval in the group is determined based on the distance from the first key position to the second key position, the average speed of the a-th train in the group within the tracking space interval, the monitoring distance with the second key position as the target point calculated by the onboard ATP of the (a+1)-th train in the group when the group train arrives, the length of the (a+1)-th train in the group when the group train arrives, and the average speed of the (a+1)-th train in the group within the tracking space interval. The station arrival interval of the group of trains is expressed as follows: in, This indicates the arrival interval of a group of trains, in min; a represents the train number in the group when the group of trains arrives; b represents the total number of trains in the group when the group of trains arrives. This represents the distance from key location B to key location C when the group of trains arrives. This represents the monitoring distance calculated by the onboard ATP of the (a+1)th train in the group, with the key location B as the target point, when the group trains arrive. This indicates the length of the (a+1)th train in the group when the group of trains arrives; This represents the average speed, in km / h, of the a-th train in the group during the tracking operation space interval when the group of trains arrives. This represents the station arrival time when a group of trains arrives. When train a and train a+1 in the group arrive on the same track, the value is 0; when train a and train a+1 in the group arrive on different tracks, the value is 0.5 min. This represents the allowance for adjusting the train tracking interval in the group when a group of trains arrives, in min; This indicates the train arrival interval in minutes for the existing signaling system.
2. The method for determining the station arrival interval of group trains according to claim 1, characterized in that, The arrival of trains in the group includes continuous arrivals on the same track and alternating arrivals on different tracks.
3. The method for determining the station arrival interval of group trains according to claim 2, characterized in that, When the trains arrive consecutively on the same track, both the first key position and the second key position are track-reverse exit signals.
4. The method for determining the station arrival interval of group trains according to claim 2, characterized in that, When different tracks arrive alternately, the first critical position is the end point of the repeated route in the different track receiving routes; the second critical position is the end point of the first critical turnout after the end point of the repeated route in the different track receiving routes.
5. A system for determining the station arrival interval of a group of trains, characterized in that, The system includes an acquisition unit and a time determination unit. The acquisition unit is used to acquire the average time of train operation within the train tracking space interval in the group, the station arrival operation time, the reserved adjustment margin, and the train arrival interval time of the existing signaling system. The time determination unit is used to determine the station arrival interval of the group trains based on the average running time within the train tracking space interval in the group, the station arrival operation time, the reserved adjustment margin, and the train arrival interval time of the existing signaling system. The acquisition unit includes an acquisition module and a time determination module. The acquisition module is used to acquire the distance from the first key position to the second key position, the average speed of the a-th train in the group within the tracking operation space interval, the monitoring distance of the a+1-th train in the group with the second key position as the target point calculated by the onboard ATP when the group train arrives, the length of the a+1-th train in the group when the group train arrives, and the average speed of the a+1-th train in the group within the tracking operation space interval. The time determination module is used to determine the average time of the trains in the group within the tracking space interval based on the distance from the first key position to the second key position, the average speed of the a-th train in the group within the tracking space interval, the monitoring distance with the second key position as the target point calculated by the onboard ATP of the a+1-th train in the group when the group train arrives, the length of the a+1-th train in the group when the group train arrives, and the average speed of the a+1-th train in the group within the tracking space interval. The arrival interval of group trains at stations is expressed as follows: in, This indicates the arrival interval of a group of trains, in min; a represents the train number in the group when the group of trains arrives; b represents the total number of trains in the group when the group of trains arrives. This represents the distance from key location B to key location C when the group of trains arrives. This represents the monitoring distance calculated by the onboard ATP of the (a+1)th train in the group, with the key location B as the target point, when the group trains arrive. This indicates the length of the (a+1)th train in the group when the group of trains arrives; This represents the average speed, in km / h, of the a-th train in the group during the tracking operation space interval when the group of trains arrives. This represents the station arrival time when a group of trains arrives. When train a and train a+1 in the group arrive on the same track, the value is 0; when train a and train a+1 in the group arrive on different tracks, the value is 0.5 min. This represents the allowance for adjusting the train tracking interval in the group when a group of trains arrives, in min; This indicates the train arrival interval in minutes for the existing signaling system.
6. The system for determining the station arrival interval of group trains according to claim 5, characterized in that, The arrival of trains in the group includes continuous arrivals on the same track and alternating arrivals on different tracks.
7. The system for determining the station arrival interval of group trains according to claim 6, characterized in that, When the trains arrive consecutively on the same track, both the first key position and the second key position are track-reverse exit signals.
8. The system for determining the station arrival interval of group trains according to claim 6, characterized in that, When different tracks arrive alternately, the first critical position is the end point of the repeated route in the different track receiving routes; the second critical position is the end point of the first critical turnout after the end point of the repeated route in the different track receiving routes.