A train arrival tracking interval time calculation method, system, device and medium

Abstract

The application belongs to the field of rail transit, and particularly relates to a train arrival tracking interval time calculation method, system, device and medium. The running process of a following train affected by a preceding train after train arrival tracking is analyzed to obtain a running process model; according to the running process model, train arrival tracking interval time measured data is collected to calculate a train arrival tracking interval time measured value; and based on the train arrival tracking interval time measured value, a signal and running time compensation method or a measured data replacement method is used to calculate a train arrival tracking interval time theoretical value. The disclosure effectively overcomes the problem of the result being conservative and distorted due to idealized assumptions in the traditional definition method. The disclosure avoids the inherent defects of the simulation method in terms of model accuracy, verification difficulty and parameter subjectivity, and further ensures the field application value through measured data, and also provides a reliable theoretical basis and practical reference for train arrival tracking testing.

Description

Technical Field

[0001] This application belongs to the field of rail transit, and specifically relates to a method, system, equipment and medium for calculating train arrival tracking interval time. Background Technology

[0002] The train arrival-tracking interval on high-speed railways is a core indicator for measuring line capacity and operational efficiency. Accurate calculation of its theoretical value is crucial for optimizing train schedules, maximizing transport potential, and ensuring safe train operation. A schematic diagram of high-speed railway train arrival-tracking intervals is shown below. Figure 1 As shown. Currently, the main technical methods for calculating the theoretical value of train arrival-tracking interval time include the traditional definition calculation method and the simulation calculation method.

[0003] The traditional definition calculation formula is:

[0004] In the formula: The train arrival tracking interval, in seconds; The braking distance, in meters, for a following train to decelerate from its maximum operating speed to the speed required to pass through a turnout at the station throat. The safe distance for trains, in meters (m). The distance between the station entrance signal and the track's reverse exit signal is expressed in meters (m). The length of the train is in meters (m). The average operating speed of a following train from the start of deceleration to the exit signal of the reverse departure station after the track is cleared, in km / h; The time, in seconds, for the CTC system to arrange the receiving route and handle signals for subsequent trains.

[0005] The simulation calculation method mainly involves establishing a computer model to simulate a series of processes such as train operation, signal system, and driver operation. The model is run tens of thousands of times in a virtual environment, and the interval time is statistically calculated.

[0006] Traditional calculation methods, based on static assumptions under worst-case conditions, while ensuring a safety baseline, are disconnected from actual operational realities. These methods are overly simplistic, failing to reflect real-world factors such as driver skill variations and train performance fluctuations. Furthermore, their conservative results often underestimate the actual train-receiving capacity of stations. Simulation methods, while capable of mimicking the dynamic processes of train operation, suffer from high accuracy dependent on the model's realism, and face challenges such as difficult model validation and complex modeling processes. Moreover, the subjectivity of parameter settings also impacts the reliability and practical application value of simulation results. Summary of the Invention

[0007] To address the aforementioned issues, this application provides a method, system, device, and medium for calculating train arrival tracking interval time.

[0008] Firstly, a method for calculating train arrival tracking interval time includes: Analyze the operation process of a train that is affected by the preceding train after it arrives and tracks, and obtain an operation process model; Based on the operational process model, the measured data of train arrival and tracking interval time are collected, and the measured value of train arrival and tracking interval time is calculated. Based on the measured value of the train arrival and tracking interval, the theoretical value of the train arrival and tracking interval is calculated using the signal and travel time compensation method or the measured data substitution method.

[0009] Furthermore, the operational process model includes the following moments in sequence: A represents the departure time of the following train from the station; B is the moment when the train entering the station is delayed due to the influence of the train in front, causing the station entry signal to not be opened in time. C indicates the time when the signal for subsequent trains is opened; D represents the moment when the preceding train arrives at the station and comes to a complete stop; E represents the time when the following train arrives at the station and comes to a complete stop.

[0010] Furthermore, the measured values ​​of the train arrival-tracking interval are calculated, including: The measured value of the train arrival tracking interval is calculated by using the arrival and stopping times of the preceding and following trains at the station.

[0011] Furthermore, the measured values ​​of the train arrival-tracking interval are calculated, including:

[0012] in, This is the measured value of the train arrival tracking interval; This is the moment when the preceding train comes to a complete stop at the station; This refers to the moment when the following train arrives at the station and comes to a complete stop.

[0013] Furthermore, the theoretical value of the train arrival tracking interval time was calculated, including: When the entry signal of the following train is delayed, the theoretical value of the train arrival tracking interval is calculated by using the measured value of the train arrival tracking interval, the compensation time of the following train affected by the delayed entry signal, and the travel time of the following train affected by the delayed entry signal.

[0014] Furthermore, the theoretical value of the train arrival tracking interval time was calculated, including: When the signal for a following train to enter the station is delayed, the theoretical value of the train arrival tracking interval is calculated using the following formula:

[0015] in, This is the theoretical value for the train arrival tracking interval; This is the compensation time for subsequent trains affected by the delayed opening of the station entry signal; This refers to the travel time of subsequent trains affected by the delayed opening of the station entry signal.

[0016] Furthermore, Available trains from the following position Run to location The runtime is represented by the time taken to complete the task. Trains can travel in both directions from their positions. Run to location The runtime is represented by the time taken to complete the task. The mileage at which the station signal is not opened in time due to the influence of the preceding train; This refers to the mileage at which the signal for the following train to enter the station is opened; This refers to the distance at which the preceding and following trains come to a complete stop upon entering the station.

[0017] Furthermore, the theoretical value of the train arrival tracking interval time was calculated, including: When the signal for a following train to enter the station is delayed, the theoretical value of the train arrival tracking interval is calculated using the following formula:

[0018] in, This is the theoretical value for the train arrival tracking interval; For the following trains The running time at the location; For the train to move forward The running time at the location; The mileage at which the station signal is not opened in time due to the influence of the preceding train; This refers to the mileage at which the signal for subsequent trains to enter the station is opened.

[0019] Furthermore, the theoretical value of the train arrival tracking interval time was calculated, including: The theoretical value of the train arrival tracking interval is calculated by using the time it takes for the following train to come to a complete stop from its departure from the station and the time it takes for the following train to come to a complete stop from its departure from the station and the preceding train to come to a complete stop.

[0020] Furthermore, the theoretical value of the train arrival tracking interval was calculated, using the following formula:

[0021] in, This is the theoretical value for the train arrival tracking interval; This refers to the time it takes for a subsequent train to depart from the station and come to a complete stop at the station. This refers to the time from when the following train departs from the station until the preceding train arrives at the station and comes to a complete stop.

[0022] Furthermore, the theoretical value of the train arrival tracking interval was calculated, using the following formula:

[0023] in, This is the moment when the preceding train comes to a complete stop at the station; This refers to the moment when the following train arrives at the station and comes to a complete stop; This is the time when the mold is started for the following train to enter the station.

[0024] Furthermore, the travel time of the following train from the initial entry point to the station's station stopping point can be replaced by the travel time of the preceding train from the initial entry point to the station's station stopping point, as shown in the following formula:

[0025] The start time of the subsequent train's arrival at the station can be replaced by the opening time of the subsequent train's arrival signal, as shown in the following formula:

[0026] in, The time when the signal for subsequent trains to enter the station is opened. This refers to the running time of the preceding train at the starting point of the station for the following train.

[0027] Furthermore, the theoretical value of the train arrival tracking interval was calculated, using the following formula:

[0028] in, The time when the signal for subsequent trains to enter the station is opened. This refers to the running time of the preceding train at the starting point of the station for the following train.

[0029] Secondly, a train arrival tracking interval calculation system includes: Calculation unit for measured interval time and calculation unit for theoretical interval time; Analyze the operation process of a train that is affected by the preceding train after it arrives and tracks, and obtain an operation process model; The interval time measured value calculation unit is used to collect the measured data of train arrival and tracking interval time according to the operation process model, and calculate the measured value of train arrival and tracking interval time. The interval time theoretical value calculation unit calculates the theoretical value of train arrival and tracking interval time based on the measured value of train arrival and tracking interval time using the signal and travel time compensation method or the measured data substitution method.

[0030] Furthermore, the operational process model includes the following moments in sequence: A represents the departure time of the following train from the station; B is the moment when the train entering the station is delayed due to the influence of the train in front, causing the station entry signal to not be opened in time. C indicates the time when the signal for subsequent trains is opened; D represents the moment when the preceding train arrives at the station and comes to a complete stop; E represents the time when the following train arrives at the station and comes to a complete stop.

[0031] Furthermore, the measured values ​​of the train arrival-tracking interval are calculated, including: The measured value of the train arrival tracking interval is calculated by using the arrival and stopping times of the preceding and following trains at the station.

[0032] Furthermore, the measured values ​​of the train arrival-tracking interval are calculated, including:

[0033] in, This is the measured value of the train arrival tracking interval; This is the moment when the preceding train comes to a complete stop at the station; This refers to the moment when the following train arrives at the station and comes to a complete stop.

[0034] Furthermore, the theoretical value of the train arrival tracking interval time was calculated, including: When the entry signal of the following train is delayed, the theoretical value of the train arrival tracking interval is calculated by using the measured value of the train arrival tracking interval, the compensation time of the following train affected by the delayed entry signal, and the travel time of the following train affected by the delayed entry signal.

[0035] Furthermore, the theoretical value of the train arrival tracking interval time was calculated, including: When the signal for a following train to enter the station is delayed, the theoretical value of the train arrival tracking interval is calculated using the following formula:

[0036] in, This is the theoretical value for the train arrival tracking interval; This is the compensation time for subsequent trains affected by the delayed opening of the station entry signal; This refers to the travel time of subsequent trains affected by the delayed opening of the station entry signal.

[0037] Furthermore, Available trains from the following position Run to location The runtime is represented by the time taken to complete the task. Trains can travel in both directions from their positions. Run to location The runtime is represented by the time taken to complete the task. The mileage at which the station signal is not opened in time due to the influence of the preceding train; This refers to the mileage at which the signal for the following train to enter the station is opened; This refers to the distance at which the preceding and following trains come to a complete stop upon entering the station.

[0038] Furthermore, the theoretical value of the train arrival tracking interval time was calculated, including: When the signal for a following train to enter the station is delayed, the theoretical value of the train arrival tracking interval is calculated using the following formula:

[0039] in, This is the theoretical value for the train arrival tracking interval; For the following trains The running time at the location; For the train to move forward The running time at the location; The mileage at which the station signal is not opened in time due to the influence of the preceding train; This refers to the mileage at which the signal for subsequent trains to enter the station is opened.

[0040] Furthermore, the theoretical value of the train arrival tracking interval time was calculated, including: The theoretical value of the train arrival tracking interval is calculated by using the time it takes for the following train to come to a complete stop from its departure from the station and the time it takes for the following train to come to a complete stop from its departure from the station and the preceding train to come to a complete stop.

[0041] Furthermore, the theoretical value of the train arrival tracking interval was calculated, using the following formula:

[0042] in, This is the theoretical value for the train arrival tracking interval; This refers to the time it takes for a subsequent train to depart from the station and come to a complete stop at the station. This refers to the time from when the following train departs from the station until the preceding train arrives at the station and comes to a complete stop.

[0043] Furthermore, the theoretical value of the train arrival tracking interval was calculated, using the following formula:

[0044] in, This is the moment when the preceding train comes to a complete stop at the station; This refers to the moment when the following train arrives at the station and comes to a complete stop; This is the time when the mold is started for the following train to enter the station.

[0045] Furthermore, the travel time of the following train from the initial entry point to the station's station stopping point can be replaced by the travel time of the preceding train from the initial entry point to the station's station stopping point, as shown in the following formula:

[0046] The start time of the subsequent train's arrival at the station can be replaced by the opening time of the subsequent train's arrival signal, as shown in the following formula:

[0047] in, The time when the signal for subsequent trains to enter the station is opened. This refers to the running time of the preceding train at the starting point of the station for the following train.

[0048] Furthermore, the theoretical value of the train arrival tracking interval was calculated, using the following formula:

[0049] in, The time when the signal for subsequent trains to enter the station is opened. This refers to the running time of the preceding train at the starting point of the station for the following train.

[0050] Thirdly, an electronic device includes a processor, a communication interface, a memory, and a communication bus, wherein the processor, the communication interface, and the memory communicate with each other through the communication bus; Memory, which stores computer programs; When a processor executes a computer program stored in memory, it implements the above-described method for calculating train arrival tracking interval time.

[0051] Fourthly, a computer-readable storage medium stores a computer program that, when executed by a processor, implements the above-described method for calculating train arrival tracking interval time.

[0052] Compared with the prior art, this application has the following advantages: This disclosure can realistically reproduce the actual operating state under the combined influence of all factors, including driver operating habits, subtle differences in the performance of different trains, train arrival route unlocking time, and environmental changes. This effectively overcomes the problem of conservative and distorted results caused by idealized assumptions in traditional definition methods. Furthermore, it eliminates the need for complex model construction, avoids the inherent shortcomings of simulation methods in terms of model accuracy, verification difficulty, and parameter subjectivity, and ensures its practical application value through measured data. It also provides a reliable theoretical basis and practical reference for train arrival tracking tests.

[0053] This publicly available data originates from real-world operations, ensuring high reliability and practical value. By analyzing historical operational data, this method accurately recreates the actual operational state under the combined influence of all factors, including driver operating habits, subtle differences in train performance, arrival route unlocking time, and environmental changes. This effectively overcomes the problem of conservative and distorted results caused by idealized assumptions in traditional definition methods. Furthermore, it eliminates the need for complex models and avoids the inherent limitations of simulation methods in terms of model accuracy, verification difficulty, and parameter subjectivity. Based on high-speed railway measured data, two innovative methods for calculating the theoretical value of train arrival-tracking interval time are proposed: a signal and travel time compensation method and a measured data substitution method.

[0054] Other features and advantages of this application 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 application. The objectives and other advantages of this application may be realized and obtained by means of the structures pointed out in the description, claims and drawings. Attached Figure Description

[0055] To more clearly illustrate the technical solutions in the embodiments of this application 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 this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0056] Figure 1 This is a schematic diagram of the arrival tracking interval for high-speed railway trains. Figure 2 This is a schematic diagram of the calculation method according to an embodiment of the present disclosure; Figure 3 This is a schematic diagram illustrating the operational process when train tracking is affected after the arrival of a train according to an embodiment of this disclosure; Figure 4 This is a high-speed railway train arrival tracking operation curve according to an embodiment of the present disclosure; Figure 5 This is the train arrival tracking timeline of the embodiments of this disclosure; Figure 6 This is a schematic diagram of the computing system architecture according to an embodiment of the present disclosure; Figure 7 This is a schematic diagram of the electronic device structure according to an embodiment of the present disclosure; Figure 8 This is a schematic diagram of the train operation curve according to an embodiment of the present disclosure. Figure 1 ; Figure 9 This is a schematic diagram of the train operation curve according to an embodiment of the present disclosure. Figure 2 . Detailed Implementation

[0057] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0058] like Figure 2 As shown, a method for calculating train arrival tracking interval time includes: S201, analyze the operation process when a train arrives and is affected by the preceding train after it has arrived and tracked it, and obtain the operation process model; S202, Based on the operation process model, collect the measured data of train arrival and tracking interval time, and calculate the measured value of train arrival and tracking interval time; S203, based on the measured value of the train arrival and tracking interval, calculates the theoretical value of the train arrival and tracking interval using the signal and travel time compensation method or the measured data substitution method.

[0059] The specific implementation details are as follows: Train arrival tracking process analysis: The train arrival tracking process can be divided into two conditions: the following train is not affected by the preceding train, and the following train is affected by the preceding train.

[0060] (1) Operating condition where the following train is not affected by the preceding train: The operation process when the following train arrives and is not affected by the preceding train is as follows: the following train departs from the station, the following train enters the station signal is opened, the following train enters the station and begins to move, the preceding train arrives at the station and comes to a complete stop, and the following train arrives at the station and comes to a complete stop.

[0061] (2) Operating conditions where the following train is affected by the preceding train: The operational process when a following train is affected by an preceding train upon arrival and tracking is as follows: The following train departs from the station; the following train begins to move due to the influence of the preceding train; the following train's entry signal is opened; the preceding train arrives at the station and comes to a complete stop; the following train also arrives at the station and comes to a complete stop. The timeline for the following train's arrival and tracking when it is affected by the preceding train is as follows: Figure 3 As shown in the diagram. Where A is the departure time of the following train from the station, B is the time when the following train's entry signal is not opened in time due to the influence of the preceding train, C is the time when the following train's signal is opened, D is the time when the preceding train arrives at the station and comes to a complete stop, and E is the time when the following train arrives at the station and comes to a complete stop.

[0062] Calculation of measured values ​​for train arrival tracking interval: According to the definition of the high-speed railway train arrival tracking interval time, the formula for calculating the measured value is as follows: (2) In the formula: The measured value of the train arrival and tracking interval, in seconds; The time s is the moment when the train comes to a complete stop at the station. s represents the time when the following train comes to a complete stop at the station.

[0063] according to Figure 3 It can be seen that the formula for calculating the measured value can also be replaced by: (3) In the formula: The measured value of the train arrival and tracking interval, in seconds; The time, in seconds, is the time it takes for a subsequent train to travel from the station to its arrival at the station and come to a complete stop. The time, s, is the time from when the following train departs from the station to when the preceding train arrives at the station and comes to a complete stop.

[0064] Calculation method of theoretical value of train arrival tracking interval time based on measured data: (1) Signal and travel time compensation method: Taking the actual measurement process of train arrival and tracking interval at high-speed railway station A as an example, this paper studies the calculation of the theoretical value of train arrival and tracking interval using the signal compensation method, and the arrival and tracking operation curves of the preceding and following trains are shown in the figure. Figure 4 As shown.

[0065] from Figure 4 It can be seen from this that The mileage at which the station signal is not opened in time due to the influence of the preceding train; This refers to the mileage at which the preceding train enters the station and begins its mold-making process. This refers to the mileage at which the signal for the following train to enter the station is opened; This refers to the distance at which the preceding and following trains come to a complete stop upon entering the station. The delay in the opening time of the station entry signal for a following train affected by the preceding train can be used by the following train from position Run to location The runtime is represented by the time taken to complete the task. The travel time of following trains affected by the delayed opening of the station entry signal can be calculated by comparing the positions of following and preceding trains. Run to location It is expressed as the travel time difference.

[0066] The theoretical optimal value for calculating the train arrival tracking interval at Station A (when the signal for subsequent trains to enter the station is delayed) is calculated using the following formula:

[0067]

[0068] (4) In the formula: The theoretical value of the train arrival tracking interval, in seconds; The compensation time for subsequent trains affected by the delayed opening of the station entry signal, in seconds; The travel compensation time for subsequent trains affected by the delayed opening of the station entry signal, in seconds; For the following trains The moment of coming to a complete stop at the point, s; For the train to move forward The moment of coming to a complete stop at the point, s; For the following trains The running time at that location is s; For the following trains The running time at that location is s; For the train to move forward The running time at that location is s.

[0069] (2) Measured data substitution method: ① Scenarios with applicable theoretical values: Taking the actual measurement process of train arrival tracking interval at high-speed railway station A as an example, when the start-up time of the following train's arrival coincides with the opening time of the following train's arrival signal, the train arrival tracking interval is the theoretically optimal value. Under this ideal condition, the following train will enter and stop at the station following the same running curve as the preceding train. In formula (3), A can be any time from the departure of the following train from the station to the start-up time before entering the station. In order to obtain the theoretical value of the train arrival tracking interval through actual measurement data, A is selected as the start-up time before the following train enters the station. At the same time, A is also the opening time of the following train's arrival signal. At this time, the train arrival tracking time axis is as follows: Figure 5 As shown.

[0070] ② Alternative formulas for theoretical scenarios: 1) Since the entry and arrival times of the following train are affected measured values, in the theoretical scenario, the travel time of the following train from the entry point to the station's station stopping point can be replaced by the travel time of the preceding train from the entry point to the station's station stopping point. The corresponding calculation formula is as follows: (5) In the formula: The starting time for the subsequent train to enter the station is s; This refers to the running time of the preceding train at the starting point of the station for the following train.

[0071] 2) Since the start-up time of the following train's arrival coincides with the opening time of the following train's arrival signal, in theoretical scenarios, the start-up time of the following train's arrival can be replaced by the opening time of the following train's arrival signal. The corresponding calculation formula is: (6) In the formula: The time when the signal for subsequent trains to enter the station is opened is s.

[0072] ③ Calculation of theoretical value for train arrival tracking interval: according to Figure 5 It can be seen that the applicable calculation formula for the theoretical value of the train arrival tracking interval time is:

[0073]

[0074]

[0075] (7) like Figure 6 As shown, a train arrival tracking interval calculation system includes: Calculation unit 601 for measured interval time and calculation unit 602 for theoretical interval time; Analyze the operation process of a train that is affected by the preceding train after it arrives and tracks, and obtain an operation process model; The interval time measured value calculation unit 601 is used to collect the measured data of train arrival and tracking interval time according to the operation process model and calculate the measured value of train arrival and tracking interval time. The interval time theoretical value calculation unit 602 calculates the theoretical value of the train arrival and tracking interval time based on the measured value of the train arrival and tracking interval time using the signal and travel time compensation method or the measured data substitution method.

[0076] like Figure 7As shown, this disclosure provides an electronic device, including a processor 701, a communication interface 702, a memory 703, and a communication bus 704, wherein the processor 701, the communication interface 702, and the memory 703 communicate with each other through the communication bus 704; Memory 703 stores computer programs; The processor 701 implements the above method when executing a computer program stored in the memory 703.

[0077] This disclosure provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the above-described method.

[0078] The computer-readable storage medium may be included in the device / apparatus described in the above embodiments; or it may exist independently and not assembled into the device / apparatus. The computer-readable storage medium carries one or more programs that, when executed, implement the method according to the embodiments of this disclosure.

[0079] According to embodiments of this disclosure, the computer-readable storage medium may be a non-volatile computer-readable storage medium, such as including, but not limited to: portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof. In this disclosure, the computer-readable storage medium may be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, apparatus, or device.

[0080] To enable those skilled in the art to better understand this disclosure, the principles of this disclosure are explained below in conjunction with the accompanying drawings: A high-speed railway passenger station was selected, and the theoretical value of the train arrival and tracking interval time was calculated using the signal and travel time compensation method and the measured data substitution method proposed in this disclosure, respectively, to verify the effectiveness and applicability of the two calculation methods.

[0081] 1. Prerequisites for the experiment: (1) During the test, the station route handling adopts the automatic trigger mode; for stations with route signals, the train arrival and departure routes are arranged in one step.

[0082] (2) During the test, the EMU train is controlled in ATP mode, and the driver runs along the line strictly according to the permissible speed curve displayed by ATP.

[0083] (3) During the test, data acquisition equipment is used to acquire the test train's running data, DMI display information and CTC route arrangement process in real time.

[0084] (4) During the test, the driver parked according to the standard of formal operation.

[0085] 2. Selection of experimental parameters: (1) Two sets of EMU trains were selected, with a top speed of 310km / h for tracking tests, and the same version of train control software was installed.

[0086] (2) The CTC adopts an automatic trigger routing and signal processing method, and the system polling time is set to 30s.

[0087] (3) The test subject is a high-speed railway passenger station with a total of 3 platforms and 7 tracks. The arrival and departure tracks of the station have no track circuit malfunction. The train runs in the upward direction.

[0088] 3. Experimental calculation results: Data acquisition equipment is used to obtain real-time data on the times when preceding and following trains reach key positions under close tracking conditions, including... , , , , , , , , , Based on this, the theoretical value of the train arrival tracking interval is calculated. The travel curves of trains 55504 and 55524 on May 3rd to a certain station are shown below. Figure 8 As shown, the train operation curves for trains 55502 and 55522 arriving at a certain station on May 4th are as follows: Figure 9 As shown in the table, the running curve of the preceding train is represented in green, and the running curve of the following train is represented in red. The theoretical values ​​of the train arrival-tracking interval calculated based on the signal and travel time compensation method are shown in Table 1, and the theoretical values ​​of the train arrival-tracking interval calculated based on the measured data substitution method are shown in Table 2.

[0089] Table 1

[0090] Table 2

[0091] As shown in Tables 1 and 2, the theoretical arrival and tracking intervals of trains 55504 and 55524 at a certain station on May 3rd, calculated using the signal and travel time compensation method, are 5 min 0.8 s, and the theoretical arrival and tracking intervals of trains 55502 and 55522 at a certain station on May 4th, are 5 min 17 s. The theoretical arrival and tracking intervals of trains 55504 and 55524 at a certain station on May 3rd, calculated using the measured data substitution method, are 5 min 0.8 s, and the theoretical arrival and tracking intervals of trains 55502 and 55522 at a certain station on May 4th, are 5 min 17 s. The theoretical arrival and tracking intervals of trains 55504 and 55524 on May 3rd, when they do not interfere with each other, are 5 min 10 s; the theoretical arrival and tracking intervals of trains 55502 and 55522 on May 4th, when they do not interfere with each other, are 5 min 20 s.

[0092] A comparative analysis of the two sets of calculation results reveals a high degree of consistency between the signal and travel time compensation method proposed in this disclosure and the measured data substitution method. The theoretical values ​​of the train arrival and tracking intervals calculated by both methods are identical. Notably, these calculation results are approximately the same as the theoretical intervals between trains in ideal conditions (i.e., when they do not interfere with each other). This research indicates that both calculation methods proposed in this disclosure can serve as effective technical means for train arrival and tracking tests. These methods not only reduce testing costs but also provide a reliable theoretical basis and practical reference for train arrival and tracking tests.

[0093] Although this application 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 this application.

Claims

1. A method for calculating train arrival tracking interval time, characterized in that, include: Analyze the operation process of a train that is affected by the preceding train after it arrives and tracks, and obtain an operation process model; Based on the operational process model, the measured data of train arrival and tracking interval time are collected, and the measured value of train arrival and tracking interval time is calculated. Based on the measured value of the train arrival and tracking interval, the theoretical value of the train arrival and tracking interval is calculated using the signal and travel time compensation method or the measured data substitution method.

2. The method for calculating train arrival tracking interval time according to claim 1, characterized in that, The operational process model includes the following moments in sequence: A represents the departure time of the following train from the station; B is the moment when the train entering the station is delayed due to the influence of the train in front, causing the station entry signal to not be opened in time. C indicates the time when the signal for subsequent trains is opened; D represents the moment when the preceding train arrives at the station and comes to a complete stop; E represents the time when the following train arrives at the station and comes to a complete stop.

3. The method for calculating train arrival tracking interval time according to claim 2, characterized in that, Calculate the measured value of the train arrival tracking interval, including: The measured value of the train arrival tracking interval is calculated by using the arrival and stopping times of the preceding and following trains at the station.

4. The method for calculating train arrival tracking interval time according to claim 2, characterized in that, Calculate the measured value of the train arrival tracking interval, including: in, This is the measured value of the train arrival tracking interval; The moment when the preceding train comes to a complete stop at the station; This refers to the moment when the following train arrives at the station and comes to a complete stop.

5. The method for calculating train arrival tracking interval time according to claim 4, characterized in that, The theoretical value of the train arrival tracking interval time was calculated, including: When the entry signal of the following train is delayed, the theoretical value of the train arrival tracking interval is calculated by using the measured value of the train arrival tracking interval, the compensation time of the following train affected by the delayed entry signal, and the travel time of the following train affected by the delayed entry signal.

6. The method for calculating train arrival tracking interval time according to claim 4, characterized in that, The theoretical value of the train arrival tracking interval time was calculated, including: When the signal for a following train to enter the station is delayed, the theoretical value of the train arrival tracking interval is calculated using the following formula: in, This is the theoretical value for the train arrival tracking interval; This is the compensation time for subsequent trains affected by the delayed opening of the station entry signal; This refers to the travel time of subsequent trains affected by the delayed opening of the station entry signal.

7. The method for calculating train arrival tracking interval time according to claim 6, characterized in that, Available trains from the following position Run to location The runtime is represented by the time taken to complete the task. The following and preceding trains can be used from the position Run to location The runtime is represented by the time taken to complete the task. The mileage at which the station signal is not opened in time due to the influence of the preceding train; This refers to the mileage at which the signal for the following train to enter the station is opened; This refers to the distance at which the preceding and following trains come to a complete stop upon entering the station.

8. The method for calculating train arrival tracking interval time according to claim 4, characterized in that, The theoretical value of the train arrival tracking interval time was calculated, including: When the signal for a following train to enter the station is delayed, the theoretical value of the train arrival tracking interval is calculated using the following formula: in, This is the theoretical value for the train arrival tracking interval; For the following trains The running time at the location; For the train to move forward The running time at the location; The mileage at which the station signal is not opened in time due to the influence of the preceding train; This refers to the mileage at which the signal for subsequent trains to enter the station is opened.

9. The method for calculating train arrival tracking interval time according to claim 2, characterized in that, The theoretical value of the train arrival tracking interval time was calculated, including: The theoretical value of the train arrival tracking interval is calculated by using the time it takes for the following train to come to a complete stop from its departure from the station and the time it takes for the following train to come to a complete stop from its departure from the station and the preceding train to come to a complete stop.

10. The method for calculating train arrival tracking interval time according to claim 2, characterized in that, The theoretical value of the train arrival tracking interval is calculated using the following formula: in, This is the theoretical value for the train arrival tracking interval; This refers to the time it takes for a subsequent train to depart from the station and come to a complete stop at the station. This refers to the time from when the following train departs from the station until the preceding train arrives at the station and comes to a complete stop.

11. The method for calculating train arrival tracking interval time according to claim 10, characterized in that, The theoretical value of the train arrival tracking interval is calculated using the following formula: in, This is the moment when the preceding train comes to a complete stop at the station; This refers to the moment when the following train arrives at the station and comes to a complete stop; This is the time when the mold is started for the following train to enter the station.

12. The method for calculating train arrival tracking interval time according to claim 11, characterized in that, The travel time of a subsequent train from the initial entry point to the station's station stopping point can be replaced by the travel time of a preceding train from the initial entry point to the station's station stopping point, as shown in the following formula: The start time of the subsequent train's arrival at the station can be replaced by the opening time of the subsequent train's arrival signal, as shown in the following formula: in, The time when the signal for subsequent trains to enter the station is opened. This refers to the running time of the preceding train at the starting point of the station for the following train.

13. The method for calculating train arrival tracking interval time according to claim 11, characterized in that, The theoretical value of the train arrival tracking interval is calculated using the following formula: in, The time when the signal for subsequent trains to enter the station is opened. This refers to the running time of the preceding train at the starting point of the station for the following train.

14. A train arrival tracking interval calculation system, characterized in that, include: Calculation unit for measured interval time and calculation unit for theoretical interval time; Analyze the operation process of a train that is affected by the preceding train after it arrives and tracks, and obtain an operation process model; The interval time measured value calculation unit is used to collect the measured data of train arrival and tracking interval time according to the operation process model, and calculate the measured value of train arrival and tracking interval time. The interval time theoretical value calculation unit calculates the theoretical value of train arrival and tracking interval time based on the measured value of train arrival and tracking interval time using the signal and travel time compensation method or the measured data substitution method.

15. A train arrival tracking interval calculation system according to claim 14, characterized in that, The operational process model includes the following moments in sequence: A represents the departure time of the following train from the station; B is the moment when the train entering the station is delayed due to the influence of the train in front, causing the station entry signal to not be opened in time. C indicates the time when the signal for subsequent trains is opened; D represents the moment when the preceding train arrives at the station and comes to a complete stop; E represents the time when the following train arrives at the station and comes to a complete stop.

16. A train arrival tracking interval calculation system according to claim 15, characterized in that, Calculate the measured value of the train arrival tracking interval, including: The measured value of the train arrival tracking interval is calculated by using the arrival and stopping times of the preceding and following trains at the station.

17. A train arrival tracking interval calculation system according to claim 15, characterized in that, Calculate the measured value of the train arrival tracking interval, including: in, This is the measured value of the train arrival tracking interval; This is the moment when the preceding train comes to a complete stop at the station; This refers to the moment when the following train arrives at the station and comes to a complete stop.

18. A train arrival tracking interval calculation system according to claim 17, characterized in that, The theoretical value of the train arrival tracking interval time was calculated, including: When the entry signal of the following train is delayed, the theoretical value of the train arrival tracking interval is calculated by using the measured value of the train arrival tracking interval, the compensation time of the following train affected by the delayed entry signal, and the travel time of the following train affected by the delayed entry signal.

19. A train arrival tracking interval calculation system according to claim 17, characterized in that, The theoretical value of the train arrival tracking interval time was calculated, including: When the signal for a following train to enter the station is delayed, the theoretical value of the train arrival tracking interval is calculated using the following formula: in, This is the theoretical value for the train arrival tracking interval; This is the compensation time for subsequent trains affected by the delayed opening of the station entry signal; This refers to the travel time of subsequent trains affected by the delayed opening of the station entry signal.

20. A train arrival tracking interval calculation system according to claim 19, characterized in that, Available trains from the following position Run to location The runtime is represented by the time taken to complete the task. Trains can travel in both directions from their positions. Run to location The runtime is represented by the time taken to complete the task. The mileage at which the station signal is not opened in time due to the influence of the preceding train; This refers to the mileage at which the signal for the following train to enter the station is opened; This refers to the distance at which the preceding and following trains come to a complete stop upon entering the station.

21. A train arrival tracking interval calculation system according to claim 17, characterized in that, The theoretical value of the train arrival tracking interval time was calculated, including: When the signal for a following train to enter the station is delayed, the theoretical value of the train arrival tracking interval is calculated using the following formula: in, This is the theoretical value for the train arrival tracking interval; For the following trains The running time at the location; For the train to move forward The running time at the location; The mileage at which the station signal is not opened in time due to the influence of the preceding train; This refers to the mileage at which the signal for subsequent trains to enter the station is opened.

22. A train arrival tracking interval calculation system according to claim 15, characterized in that, The theoretical value of the train arrival tracking interval time was calculated, including: The theoretical value of the train arrival tracking interval is calculated by using the time it takes for the following train to come to a complete stop from its departure from the station and the time it takes for the following train to come to a complete stop from its departure from the station and the preceding train to come to a complete stop.

23. A train arrival tracking interval calculation system according to claim 15, characterized in that, The theoretical value of the train arrival tracking interval is calculated using the following formula: in, This is the theoretical value for the train arrival tracking interval; This refers to the time it takes for a subsequent train to depart from the station and come to a complete stop at the station. This refers to the time from when the following train departs from the station until the preceding train arrives at the station and comes to a complete stop.

24. A train arrival tracking interval calculation system according to claim 23, characterized in that, The theoretical value of the train arrival tracking interval is calculated using the following formula: in, This is the moment when the preceding train comes to a complete stop at the station; This refers to the moment when the following train arrives at the station and comes to a complete stop; This is the time when the mold is started for the following train to enter the station.

25. A train arrival tracking interval calculation system according to claim 24, characterized in that, The travel time of a subsequent train from the initial entry point to the station's station stopping point can be replaced by the travel time of a preceding train from the initial entry point to the station's station stopping point, as shown in the following formula: The start time of the subsequent train's arrival at the station can be replaced by the opening time of the subsequent train's arrival signal, as shown in the following formula: in, The time when the signal for subsequent trains to enter the station is opened. This refers to the running time of the preceding train at the starting point of the following train's entry into the station.

26. A train arrival tracking interval calculation system according to claim 24, characterized in that, The theoretical value of the train arrival tracking interval is calculated using the following formula: in, The time when the signal for subsequent trains to enter the station is opened. This refers to the running time of the preceding train at the starting point of the following train's entry into the station.

27. An electronic device, characterized in that, It includes a processor, a communication interface, a memory, and a communication bus, wherein the processor, the communication interface, and the memory communicate with each other through the communication bus; Memory, which stores computer programs; A processor, when executing a computer program stored in memory, implements a method for calculating train arrival tracking interval time according to any one of claims 1-13.

28. A computer-readable storage medium storing a computer program, characterized in that, When the computer program is executed by the processor, it implements a method for calculating the train arrival tracking interval time according to any one of claims 1-13.

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