A group train section tracking interval time determination method and system

Abstract

The application provides a group train section tracking interval time determination method and system. The method comprises the following steps: acquiring the average time of the i-th train in the group train running in the train tracking operation space interval, the reserved adjustment margin and the train section tracking interval time of the existing signal system; and determining the group train section tracking interval time according to the average time, the reserved adjustment margin and the train section tracking interval time of the existing signal system. The group train section tracking interval time determination method and system realize the unified calculation of the train section tracking interval time of the multiple trains with different running speed limits and different running speed change rules in a group, and verify that the average tracking interval time between the group freight trains is at least 3 minutes.

Description

Technical Field

[0001] This invention belongs to the field of train control, and specifically relates to a method and system for determining the interval time of group train tracking. Background Technology

[0002] Traditional methods for determining train tracking intervals are based on the principle of single-train operation, with the smallest calculation unit being a train. The principle for calculating train tracking intervals is the interval between two trains of the same type with the same speed limit and the same speed change pattern.

[0003] Group control breaks away from traditional train control methods. The smallest calculation unit is a train group. Trains within a train group have different speed limits and different speed variation patterns. It is necessary to calculate the interval between trains in the group, or even different types of trains. Therefore, the traditional method for determining the interval between trains in the group is no longer applicable to the calculation of the interval between trains in the group control.

[0004] This invention proposes a method and system for determining the tracking interval time of group trains in 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 interval time for group train tracking, the method comprising: Obtain the average running time of the i-th train in the group within the tracking space interval, the reserved adjustment margin, and the train section tracking interval time of the existing signaling system; The train tracking interval time for a group of trains is determined based on the average time, the reserved adjustment margin, and the train tracking interval time of the existing signaling system.

[0006] Furthermore, obtaining the average travel time of the i-th train within the tracking space interval in the train group includes: Obtain the monitoring distance between the i-th train and the preceding train in the train group, the length of the i-th train, the length of the (i-1)-th train, and the average speed of the i-th train within the tracking space interval; The average time taken by the i-th train in the group of trains to travel within the tracking space interval is determined based on the monitoring distance, the length of the i-th train, the length of the (i-1)-th train, and the average speed.

[0007] Furthermore, the average time is determined based on the product of the length of the i-th train and the length of the (i-1)-th train with a first scaling factor.

[0008] Furthermore, the tracking interval time of the group train is determined by summing the average time of the i-th train in the group within the tracking operation space interval and the reserved adjustment margin.

[0009] Furthermore, the interval time for tracking trains within the group is expressed as follows:

[0010] in, This represents the interval time for group train tracking, where i represents the train number in the group during interval tracking, and j represents the total number of trains in the group during interval tracking. This represents the monitoring distance between the i-th train in a train group and the preceding train during section tracking. This represents the length of the i-th train in a train group during interval tracking. This represents the length of the (i-1)th train in a train group during section tracking. This represents the average speed of the i-th train in a train group during interval tracking. This represents the reserved adjustment margin for the tracking interval time of the i-th train in a train group during interval tracking. This indicates the train tracking interval time of the existing signaling system.

[0011] The present invention also provides a system for determining the interval time of group train tracking, the system comprising an acquisition unit and a time determination unit. The acquisition unit is used to acquire the average running time of the i-th train in the group of trains within the tracking running space interval, the reserved adjustment margin, and the train section tracking interval time of the existing signaling system. The time determination unit is used to determine the train section tracking interval time of the group trains based on the average time, the reserved adjustment margin, and the train section tracking interval time of the existing signaling system.

[0012] Furthermore, the acquisition unit includes an acquisition module and a time determination module. The acquisition module is used to acquire the monitoring distance between the i-th train and the preceding train in the group of trains, the length of the i-th train, the length of the (i-1)-th train, and the average speed of the i-th train within the tracking space interval. The time determination module, which is communicatively connected to the acquisition module, is used to determine the average time that the i-th train in the group of trains travels within the tracking space interval based on the monitoring distance, the length of the i-th train, the length of the (i-1)-th train, and the average speed.

[0013] Furthermore, the time determination module is used to determine the average time based on the product of the length of the i-th train and the length of the (i-1)-th train with a first scaling factor.

[0014] Furthermore, the time determination module is used to determine the group train interval time based on the sum of the average time of the i-th train in the group train within the tracking operation space interval and the reserved adjustment margin.

[0015] Furthermore, the interval time for tracking trains within the group is expressed as follows:

[0016] in, This represents the interval time for group train tracking, where i represents the train number in the group during interval tracking, and j represents the total number of trains in the group during interval tracking. This represents the monitoring distance between the i-th train in a train group and the preceding train during section tracking. This represents the length of the i-th train in a train group during interval tracking. This represents the length of the (i-1)th train in a train group during section tracking. This represents the average speed of the i-th train in a train group during interval tracking. This represents the reserved adjustment margin for the tracking interval time of the i-th train in a train group during interval tracking. This indicates the train tracking interval time of the existing signaling system.

[0017] The method and system for determining the tracking interval time of group trains of the present invention realizes the unified calculation of the tracking interval time of various train sections with different operating speed limits and different operating speed variation patterns within a group, and verifies that the average tracking interval time between freight trains in a 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.

[0018] 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

[0019] 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.

[0020] Figure 1 A schematic flowchart of the method for determining the interval time of group train section tracking in an embodiment of the present invention is shown; Figure 2 A schematic diagram of the system structure for determining the interval time of group train tracking in an embodiment of the present invention is shown; Figure 3 A schematic diagram illustrating the calculation of the tracking interval time for group trains in an embodiment of the present invention is shown. Figure 4 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. Figure 5This invention illustrates a schematic diagram of calculating the train departure interval for different track group trains in an embodiment of the present invention. Figure 6 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. Figure 7 A schematic diagram illustrating the calculation of train arrival intervals for different track groups in an embodiment of the present invention is shown. Detailed Implementation

[0021] 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.

[0022] This invention provides a method for determining the interval time for group train tracking in different sections. Figure 1 A schematic diagram of a method for determining the tracking interval time of a group of trains in an embodiment of the present invention is shown. The method includes obtaining the average time of the i-th train in the group of trains within the tracking operation space interval, the reserved adjustment margin, and the train tracking interval time of the existing signaling system; and determining the group of trains tracking interval time based on the average time, the reserved adjustment margin, and the train tracking interval time of the existing signaling system.

[0023] Specifically, in this embodiment of the invention, obtaining the average running time of the i-th train in the group of trains within the tracking running space interval includes: obtaining the monitoring distance between the i-th train and the preceding train, the length of the i-th train, the length of the (i-1)-th train, and the average speed of the i-th train within the tracking running space interval; and determining the average running time of the i-th train in the group of trains within the tracking running space interval based on the monitoring distance, the length of the i-th train, the length of the (i-1)-th train, and the average speed.

[0024] Specifically, the average time is determined by multiplying the length of the i-th train and the length of the (i-1)-th train by a first scaling factor.

[0025] Specifically, the tracking interval time of the group trains is determined by summing the average running time of the i-th train in the group within the tracking operation space interval and the reserved adjustment margin.

[0026] Figure 3 This diagram illustrates the calculation of the tracking interval time for group trains in an embodiment of the present invention. Figure 3In 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,T03 of the leading group train are not shown), and the following group train Q002{T01,T02,T03,T04} consists of four trains.

[0027] Specifically, the interval time for tracking trains in the group section is expressed as follows:

[0028] in, This represents the interval time for group train tracking, where i represents the train number in the group during interval tracking, and j represents the total number of trains in the group during interval tracking. This represents the monitoring distance between the i-th train in a train group and the preceding train during section tracking. This represents the length of the i-th train in a train group during interval tracking. This represents the length of the (i-1)th train in a train group during section tracking. This represents the average speed of the i-th train in a train group during interval tracking. This represents the reserved adjustment margin for the tracking interval time of the i-th train in a train group during interval tracking. This indicates the train tracking interval time of the existing signaling system.

[0029] 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.

[0030] I. Determining the Interval Time for Tracking Group Trains: 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:

[0031] in, 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.

[0032] II. Interval time for group train tracking The determination

[0033] The determination of the interval time for group train tracking in this embodiment of the invention has been explained above and will not be repeated here.

[0034] III. Departure Intervals for Group Trains

[0035] 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 4 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 4 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 5 This diagram illustrates the calculation of train departure intervals for different track group trains in an embodiment of the present invention. Figure 5 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}.

[0036] Figures 4-5 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.

[0037] In this embodiment of the invention, the departure interval of group trains at stations Represented as:

[0038]

[0039] in, The interval between train departures from the station is min; h represents the track number occupied by the train when it departs; m represents the total number of tracks occupied by the train when it departs; k represents the number of trains in the current track when the train departs. This indicates the length of the k-th train on track h when a group of trains departs; This 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; This represents the average speed, in km / h, of the k-th train on track h during the track-following spatial interval when the group of trains departs. This indicates the total number of group trains on track h when the group trains depart. Indicates the station's departure operation time when a group of trains departs; This represents the allowance for adjusting the train tracking interval time within a train group when the group of trains departs, in min; This indicates the train departure interval of the existing signaling system, in minutes.

[0040] IV. Station arrival intervals for group trains

[0041] In this embodiment of the invention, the arrival methods of group trains at stations include two types: continuous arrival on the same track and alternating arrival on different tracks. Figure 6 This diagram illustrates the calculation of arrival interval time for train groups on the same track in an embodiment of the present invention. Figure 6 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.

[0042] Figure 7 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 7 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.

[0043] Figures 6-7 middle, C(a) is a key position. When train a and train a+1 in a 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 a 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. When train a and train a+1 in a group meet on the same track, this position is the reverse exit signal for the track. That is, when trains in the same track group 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 a 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.

[0044] In this embodiment of the invention, the arrival interval of the group trains Represented as:

[0045]

[0046] In the formula, 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.

[0047] This invention also provides a system for determining the interval time of group train tracking in different sections. Figure 2 A schematic diagram of the system structure for determining the interval time of group train tracking 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 time, reserved adjustment margin, and train section tracking interval time of the i-th train in the group of trains within the tracking operation space interval. The time determination unit is used to determine the group of train section tracking interval time based on the average time, the reserved adjustment margin, and the train section tracking interval time of the existing signal system.

[0048] Specifically, the acquisition unit includes an acquisition module and a time determination module. The acquisition module is used to acquire the monitoring distance between the i-th train and the preceding train in the group of trains, the length of the i-th train, the length of the (i-1)-th train, and the average speed of the i-th train within the tracking space interval. The time determination module, which is communicatively connected to the acquisition module, is used to determine the average time that the i-th train in the group of trains travels within the tracking space interval based on the monitoring distance, the length of the i-th train, the length of the (i-1)-th train, and the average speed.

[0049] Specifically, the time determination module is used to determine the average time based on the product of the length of the i-th train and the length of the (i-1)-th train with a first proportional factor.

[0050] Specifically, the time determination module is used to determine the group train interval time based on the sum of the average time of the i-th train in the group's tracking operation space interval and the reserved adjustment margin.

[0051] Specifically, the interval time for tracking trains in the group section is expressed as follows:

[0052] in, This represents the interval time for group train tracking, where i represents the train number in the group during interval tracking, and j represents the total number of trains in the group during interval tracking. This represents the monitoring distance between the i-th train in a train group and the preceding train during section tracking. This represents the length of the i-th train in a train group during interval tracking. This represents the length of the (i-1)th train in a train group during section tracking. This represents the average speed of the i-th train in a train group during interval tracking. This represents the reserved adjustment margin for the tracking interval time of the i-th train in a train group during interval tracking. This indicates the train tracking interval time of the existing signaling system.

[0053] 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 interval time for tracking group trains in sections, characterized in that, The method includes: Obtain the average running time of the i-th train in the group within the tracking space interval, the reserved adjustment margin, and the train section tracking interval time of the existing signaling system; The train section tracking interval time for the group train is determined based on the average time, the reserved adjustment margin, and the train section tracking interval time of the existing signaling system. Obtaining the average travel time of the i-th train within the tracking space interval in the train group includes: Obtain the monitoring distance between the i-th train and the preceding train in the train group, the length of the i-th train, the length of the (i-1)-th train, and the average speed of the i-th train within the tracking space interval; The average time taken by the i-th train in the group of trains to travel within the tracking space interval is determined based on the monitoring distance, the length of the i-th train, the length of the (i-1)-th train, and the average speed. The interval time for tracking trains in the group section is expressed as follows: in, This represents the interval time for group train tracking, where i represents the train number in the group during interval tracking, and j represents the total number of trains in the group during interval tracking. This represents the monitoring distance between the i-th train in a train group and the preceding train during section tracking. This represents the length of the i-th train in a train group during interval tracking. This represents the length of the (i-1)th train in a train group during section tracking. This represents the average speed of the i-th train in a train group during interval tracking. This represents the reserved adjustment margin for the tracking interval time of the i-th train in a train group during interval tracking. This indicates the train tracking interval time of the existing signaling system.

2. The method for determining the interval time for group train tracking according to claim 1, characterized in that, The average time is determined by multiplying the length of the i-th train and the length of the (i-1)-th train by a first scaling factor.

3. The method for determining the interval time for group train tracking according to claim 1, characterized in that, The tracking interval time of the group train is determined by summing the average time of the i-th train in the group within the tracking operation space interval and the reserved adjustment margin.

4. A system for determining the interval time of group train tracking, characterized in that, The system includes an acquisition unit and a time determination unit. The acquisition unit is used to acquire the average running time of the i-th train in the group of trains within the tracking running space interval, the reserved adjustment margin, and the train section tracking interval time of the existing signaling system. A time determination unit is used to determine the train section tracking interval time of a group of trains based on the average time, the reserved adjustment margin, and the train section tracking 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 monitoring distance between the i-th train and the preceding train in the group of trains, the length of the i-th train, the length of the (i-1)-th train, and the average speed of the i-th train within the tracking space interval. The time determination module, which is communicatively connected to the acquisition module, is used to determine the average running time of the i-th train in the group of trains within the tracking running space interval based on the monitoring distance, the length of the i-th train, the length of the (i-1)-th train, and the average speed. The interval time for tracking trains in the group section is expressed as follows: in, This represents the interval time for group train tracking, where i represents the train number in the group during interval tracking, and j represents the total number of trains in the group during interval tracking. This represents the monitoring distance between the i-th train in a train group and the preceding train during section tracking. This represents the length of the i-th train in a train group during interval tracking. This represents the length of the (i-1)th train in a train group during section tracking. This represents the average speed of the i-th train in a train group during interval tracking. This represents the reserved adjustment margin for the tracking interval time of the i-th train in a train group during interval tracking. This indicates the train tracking interval time of the existing signaling system.

5. The group train interval tracking time determination system according to claim 4, characterized in that, The time determination module is used to determine the average time based on the product of the length of the i-th train and the length of the (i-1)-th train with a first scaling factor.

6. The group train section tracking interval time determination system according to claim 4, characterized in that, The time determination module is used to determine the group train interval time based on the sum of the average time of the i-th train in the group's tracking operation space interval and the reserved adjustment margin.

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