A train headway analysis method, device and equipment

Abstract

The present application relates to the technical field of urban rail transit, and provides a train running interval analysis method, device and equipment, the method comprising: obtaining running path information of a to-be-analyzed scene, the running path information being used to represent different driving routes of at least two trains in a target section; based on the running path information, the to-be-analyzed scene is classified into a two-train interference type or a multi-train interference type; if classified into the two-train interference type, a tracking interval is obtained by analyzing a preset limit point set and a time link set; if classified into the multi-train interference type, a time sequence diagram is first constructed according to a control time sequence, then a train alternate departure interval is read from the time sequence diagram, and a unified interval is obtained by adjusting a key link time. The present application solves the problem that the train running interval cannot be accurately calculated due to different running paths of front and rear trains in the prior art, and realizes accurate analysis and unified optimization of the train tracking interval under a complex path scene.

Description

Technical Field

[0001] This invention relates to the field of urban rail transit technology, and in particular to a method, apparatus and equipment for analyzing train headway. Background Technology

[0002] The operational efficiency and safety level of urban rail transit systems are largely determined by the key indicator of train headway. Train headway refers to the time distance between two consecutive trains running in the same direction at any point on the line. Accurate calculation and control of train headway are fundamental to ensuring the capacity and operational safety of rail transit.

[0003] Currently, for routine scenarios where preceding and following trains follow completely identical routes, such as tracking within a fixed section, the industry has mature analytical methods and technical systems. These methods are primarily based on fixed block control logic and standard train operation curves for calculation, effectively meeting the interval analysis needs under a single operating path.

[0004] However, with the development of networked and complex urban rail transit operations, trains frequently encounter complex scenarios involving path divergence and convergence during actual operation. Examples include trains crossing and turning back before stations, trains entering or leaving depots needing to insert into or leave the mainline traffic flow, trains crossing lines on interconnected lines, short-route turnaround operations, and overtaking and yielding in mixed express and local train operations. In these scenarios where trains have different operating paths, train operation is affected by a combination of dynamic factors such as turnout switching, multiple route management, and mutual constraints among multiple trains. Existing interval analysis methods based on "same path tracking" are difficult to apply directly, resulting in the inability to accurately determine safe and efficient train intervals, thus restricting the full utilization of line capacity and posing potential operational safety risks.

[0005] Therefore, how to accurately analyze train intervals under different operating paths has become a critical technical challenge that urgently needs to be addressed in the field of urban rail transit operation and management. Summary of the Invention

[0006] This invention provides a method, apparatus, and equipment for analyzing train intervals, which solves the problem in the prior art that train intervals cannot be accurately calculated due to different running paths of preceding and following trains, and realizes accurate analysis and unified optimization of train tracking intervals in complex path scenarios.

[0007] This invention provides a method for analyzing train headway, comprising the following steps: Obtain the running path information of the scenario to be analyzed, wherein the running path information is used to characterize the different travel routes of at least two trains within the target section; Based on the aforementioned path information, the scenario to be analyzed is classified as either two-vehicle interference or multi-vehicle interference. If it is classified as a two-vehicle interference type, the tracking interval is obtained by analyzing the preset set of limit points and time segments. If it is classified as a multi-train interference type, a timing diagram is first constructed based on the control timing, and then the train alternating departure interval is read from the timing diagram and a unified interval is obtained by adjusting the timing of key links.

[0008] According to the train interval analysis method provided by the present invention, the set of limiting points includes the turnout conversion completion position, the axle counting section clearance position, and the route start signal position; the set of time elements includes the turnout conversion time, route processing time, train start time, train running to the target position time, and train end-changing time.

[0009] According to the present invention, a method for analyzing train intervals, wherein the tracking interval is obtained by parsing a preset set of constraint points and a set of time segments, specifically includes: dividing the interference between the preceding and following trains into several sub-scenarios according to the route characteristics and travel directions of the preceding and following trains in the target section; for each sub-scenarios, identifying the interval constraint points corresponding to the current interference scenario between the two trains; determining the key time segments constituting the train interval based on the interval constraint points; accumulating the corresponding durations of each key time segment to obtain the sub-interval of the corresponding scenario; comparing all sub-intervals, and determining the sub-interval with the largest value as the tracking interval.

[0010] According to the train interval analysis method provided by the present invention, the step of constructing a timing diagram based on the control timing sequence specifically includes: determining the core control timing rules for multi-train operation based on station signal layout and operation logic; establishing a coordinate system with time as the horizontal axis and train operation stages as the vertical axis; marking the time nodes of each train in the key operation stages in the coordinate system according to the control timing rules; and connecting the corresponding time nodes of each train to form a timing diagram representing the time correlation of multi-train operation.

[0011] According to the train interval analysis method provided by the present invention, the step of reading the alternating departure interval of trains from the time sequence diagram and obtaining a unified interval by adjusting the time of key links specifically includes: extracting the alternating departure interval of adjacent trains from the time sequence diagram; identifying the unbalanced departure patterns in the alternating departure interval; adjusting the duration of at least one key operation link based on the departure balance requirement; and recalculating the adjusted alternating departure interval until a unified tracking interval is obtained.

[0012] According to the train interval analysis method provided by the present invention, after obtaining the unified interval, the method further includes: using an analytical method to verify the interval in a standard multi-train interference scenario; wherein, the analytical method calculates the verification interval based on the curve entry route processing time, the train curve entry running time, the curve exit route processing time, and the train curve exit running time.

[0013] The present invention also provides a train interval analysis device, comprising the following modules: The running path acquisition module is used to acquire the running path information of the scenario to be analyzed, and the running path information is used to characterize the different travel routes of at least two trains in the target section. The scene classification module is used to classify the scene to be analyzed into a two-vehicle interference class or a multi-vehicle interference class based on the running path information. The two-vehicle analysis module is used to analyze and obtain the tracking interval based on the preset set of constraint points and time segments if the two-vehicle interference is classified as a two-vehicle interference class. The multi-train analysis module is used to first construct a timing diagram based on the control timing if the train is classified as a multi-train interference type, and then read the train alternating departure interval from the timing diagram and obtain a unified interval by adjusting the timing of key links.

[0014] The present invention also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the train interval analysis method as described above.

[0015] The present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the analysis method for train intervals as described above.

[0016] The present invention also provides a computer program product, including a computer program that, when executed by a processor, implements the train interval analysis method as described above.

[0017] This invention provides a method, apparatus, and equipment for analyzing train intervals, offering the following advantages: By intelligently categorizing complex operating scenarios into "two-train interference" or "multi-train interference" based on differences in train routes within a target section, it provides a logical basis for selecting subsequent differentiated analysis methods. For two-train interference scenarios, analytical calculations are performed using a preset set of constraint points and time-related parameters, systematically decomposing and quantifying various time-related influencing factors, effectively improving the accuracy and operability of interval calculations. For complex scenarios involving multi-train coordination, the solution constructs a control timing diagram and dynamically adjusts the timing of key parameters, achieving visualized analysis and balanced optimization of train alternating departure intervals, significantly enhancing the system's coordinated control capabilities under multiple constraints. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in this 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 this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a flowchart illustrating the train interval analysis method provided by the present invention.

[0020] Figure 2 This is a schematic diagram of sub-scenario 1 provided by the present invention.

[0021] Figure 3 This is a schematic diagram of sub-scenario 2 provided by the present invention.

[0022] Figure 4 This is a schematic diagram of a station-front cross-turnover scenario provided by the present invention.

[0023] Figure 5 This is the train timing diagram provided by the present invention.

[0024] Figure 6 This is a schematic diagram of the train interval analysis device provided by the present invention.

[0025] Figure 7 This is a schematic diagram of the structure of the electronic device provided by the present invention. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0027] This invention relates to the field of urban rail transit operation management technology, specifically to an analysis method for train intervals under different operating routes. It is applicable to various complex scenarios such as pre-station crossovers, train insertion / return at depots, interconnected cross-line operation, short-route turnaround station operation, and mixed express and local train operation with station bypassing. It can accurately calculate train intervals and ensure the safe and efficient operation of rail transit.

[0028] The following is combined Figures 1-7 The embodiments of the present invention are described in detail.

[0029] Figure 1 This is a flowchart illustrating the train interval analysis method provided by the present invention, as shown below. Figure 1 As shown, the method includes the following steps: S110. Obtain the running path information of the scenario to be analyzed. The running path information is used to characterize the different travel routes of at least two trains within the target section.

[0030] Specifically, in the scenario of a train leaving the depot and connecting to the main line, there are two trains with different routes within the target section. One is a train leaving the depot and planning to connect to the main line, while the other is a turnaround train running on the main line. By analyzing the train operation plan and track topology data, the path conflict points of the two trains in the switch area, axle counting section, and platform area are accurately extracted. For example, the train leaving the depot needs to connect to the main line via a lateral switch, while the turnaround train needs to complete the end-changing operation at the platform before leaving. This operation path information clearly characterizes the route conflict relationship and spatial interference pattern of the two trains at key axle counting section boundary points such as JZ2 and JZ3, providing a data foundation for subsequent scenario classification.

[0031] By accurately acquiring operational path information, the system can identify the path differentiation characteristics of trains in key sections from the underlying data level, providing a reliable basis for accurately distinguishing "two-train interference" scenarios. This effectively avoids scenario misjudgment caused by incomplete path feature extraction, ensures a high degree of adaptability between the analysis method and the operational scenario, and improves the accuracy and relevance of interval analysis from the source.

[0032] S120. Based on the running path information, the scenario to be analyzed is classified into two-vehicle interference or multi-vehicle interference.

[0033] (a) First type of scenario (two-vehicle interference scenario) Scenario definition: Operational restrictions only exist between two trains in front and behind, including scenarios where trains entering or leaving the depot cut into the main line, scenarios where trains entering or leaving the depot turn back to the depot, scenarios where trains cross lines during interconnection, scenarios where trains run at turnaround stations on short routes, and scenarios where express trains pass through stations and slow trains give way when express and slow trains are operating in mixed operations; these scenarios are essentially "cutting into a continuously running train set" or "removing a train from a continuously running train set".

[0034] (ii) Second type of scenario (interference scenario involving three or more vehicles) Scenario definition: Operational restrictions exist between three or more trains. The train is not only affected by interference from the trains in front and behind, but also has operational associations with multiple trains. Typical scenarios are the pre-station cross-turnover scenario and its variations.

[0035] Specifically, in the scenario of a train leaving the depot intersecting on the main line, the system, based on the acquired operating path information, identifies two trains with different routes within the target section: one is a train leaving the depot and planning to merge onto the main line from the depot's siding, and the other is a turnaround train operating on the main line. By comparing the path conflict characteristics of the two trains in the switch area and axle counting section, the system determines that this scenario belongs to the typical "intercepting of a continuously running train set" mode. Based on the characteristic clearly stated in the operating path information that "the two trains have a route intersection in the JZ2 / JZ3 section but no third-party train intervention," the system accurately classifies this scenario as "two-train interference." Similarly, when the system detects that three or more trains have multi-directional route conflicts in the pre-station crossing and turnaround area, it classifies it as "multi-train interference" based on the path characteristic that "operational restrictions involve mutual constraints between three or more trains."

[0036] Through an intelligent classification mechanism based on operational path information, the system can accurately distinguish between simple two-vehicle interference scenarios and complex multi-vehicle collaborative scenarios, laying the foundation for subsequent differentiated analysis methods. This classification method ensures accurate matching between the analysis method and scenario characteristics, avoids the problem of incompatible calculation models caused by scenario misjudgment, and significantly improves the pertinence and reliability of the interval analysis method.

[0037] S130. If it is classified as a two-vehicle interference type, the tracking interval is obtained by analyzing the preset set of limit points and time segments.

[0038] According to the train interval analysis method provided by the present invention, the set of limiting points includes the turnout conversion completion position, the axle counting section clearance position, and the route start signal position; the set of time elements includes the turnout conversion time, route processing time, train start time, train running to the target position time, and train end-changing time.

[0039] According to the present invention, a method for analyzing train intervals is provided. Based on a preset set of constraint points and a set of time segments, the tracking interval is obtained by parsing. Specifically, the method includes: dividing the interference between the preceding and following trains into several sub-scenarios according to the route characteristics and driving directions of the preceding and following trains in the target section; for each sub-scenarios, identifying the interval constraint points corresponding to the current interference scenario between the two trains; determining the key time segments constituting the train interval based on the interval constraint points; accumulating the corresponding durations of each key time segment to obtain the sub-interval of the corresponding scenario; comparing all sub-intervals, and determining the sub-interval with the largest value as the tracking interval.

[0040] Specifically, in the scenario of "a train leaving the depot cutting into the main line," which is classified as a two-car interference, the system first precisely divides the scenario into two sub-scenarios based on the route nature (whether it is a depot exit operation or a turnaround operation) and travel direction (whether it is heading towards or leaving the main line) of the preceding and following trains in the target section: Sub-scenarios 1 (e.g., Figure 2 As shown, the preceding train is the depot exit train, and the following train is the turnaround train) and sub-scenario 2 (such as... Figure 3 As shown, the preceding train is a turnaround train, and the following train is a depot exit train. For sub-scenario 1, the system identifies its interval constraint point as the axle counting section boundary point JZ3, and based on this, determines the key time components constituting the train interval: the turnout turning time after the preceding train's tail passes JZ3, the route processing time for the following train to enter the turnaround track, the following train's start time, the following train's travel time to the turnaround track, the route processing time for the following train to exit the turnaround track, the following train's end-changing time, and the travel time for the following train from the turnaround track to its tail passing JZ3. The system accumulates the preset times for these time components to obtain sub-interval H1. For sub-scenario 2, the system identifies its interval constraint point as JZ2, and determines the key time components as: the route processing time for the following train after the preceding train's tail passes JZ2, the following train's start time, and the time for the following train to its tail passing JZ2. These are accumulated to obtain sub-interval H2. Finally, the system compares H1 and H2 and selects the larger value as the final, unified tracking interval for the scenario of "train leaving the depot inserting into the main line".

[0041] By further refining the complex two-vehicle interference scenario into several sub-scenarios based on route characteristics and driving direction, and independently calculating the interval for each sub-scenarios and taking the maximum value as the final interval, this method ensures that the safety interval requirements are met even under the most unfavorable operating conditions. This refined analysis strategy avoids the problem of overly optimistic interval calculations that may result from insufficient scenario considerations, thereby systematically improving the reliability of interval analysis results and the level of operational safety.

[0042] S140. If it is classified as a multi-train interference type, first construct a timing diagram based on the control timing, then read the train alternating departure interval from the timing diagram and obtain a unified interval by adjusting the timing of key links.

[0043] According to the train interval analysis method provided by the present invention, a time sequence diagram is constructed based on the control timing, specifically including: determining the core control timing rules for multi-train operation based on station signal layout and operation logic; establishing a coordinate system with time as the horizontal axis and train operation links as the vertical axis; marking the time nodes of each train in the key operation links in the coordinate system according to the control timing rules; and connecting the corresponding time nodes of each train to form a time sequence diagram representing the time correlation of multi-train operation.

[0044] Specifically, in the multi-vehicle interference scenario of "pre-station crossover," see [reference needed]. Figure 4 The system first determines the core control timing rules for multi-train operation based on the station signal layout (such as the setting of axle counting sections JZ1, JZ2, and JZ5) and operational logic. Specifically, these rules include: only when train No. 2 (straight in, curve out) enters the station and clears JZ5, and train No. 1 (curve in, straight out) leaves the station and clears JZ1, can the route for train No. 3 (curve in, straight out) to enter platform A via the turnout be initiated; only after train No. 3 enters the station and clears JZ2 can the exit route for train No. 2 be processed; and when train No. 2 leaves the station and clears JZ1, the exit route for train No. 3 and the entry route for train No. 4 (straight in, curve out) are processed simultaneously.

[0045] Subsequently, the system establishes a coordinate system with time (seconds) as the horizontal axis and train operation stages (such as "processing entry route", "clearing JZ2 at the rear", "arriving at the platform", "stopping at the station", "processing exit route", and "clearing JZ1") as the vertical axis. Within this coordinate system, the system strictly adheres to the aforementioned control timing rules, marking the start and end times of each key operational stage for each train participating in the cross-turnaround (e.g., marking the time period "processing entry route takes 13 seconds" and the time period "arriving at platform B takes 8 seconds" for train 2). Finally, the system connects each train's corresponding time nodes to form a timing diagram that intuitively and clearly represents the mutual constraints and relationships between multiple trains in the time dimension, such as... Figure 5 As shown.

[0046] By transforming complex multi-train operation control rules into visualized time sequence diagrams, this method clearly and intuitively presents the mutual constraints and temporal correlations of multiple trains in complex scenarios such as crossovers and turnarounds. This visualization tool effectively reduces the difficulty of understanding multi-train interference scenarios, providing a solid and reliable graphical analysis foundation for accurately reading initial departure intervals, identifying operational bottlenecks, and subsequently optimizing intervals. It significantly improves the intuitiveness and operability of interval analysis in complex operational scenarios.

[0047] According to the train interval analysis method provided by the present invention, the alternating departure interval of trains is read from the time sequence diagram and a unified interval is obtained by adjusting the time of key links. Specifically, the method includes: extracting the alternating departure interval of adjacent trains from the time sequence diagram; identifying the unbalanced departure patterns in the alternating departure interval; adjusting the duration of at least one key operation link based on the departure balance requirement; and recalculating the adjusted alternating departure interval until a unified tracking interval is obtained.

[0048] Specifically, after constructing the timeline diagram for the "pre-station crossover" scenario, the system extracts the alternating departure intervals of adjacent trains from this diagram, obtaining a series of initial interval values ​​(e.g., 49 seconds and 125 seconds). By analyzing these interval values, the system identifies a significant imbalance in departure patterns, where the departure intervals fluctuate greatly between 49 seconds and 125 seconds, failing to establish a stable rhythm. Based on the operational requirement for balanced departures, the system determines to adjust the duration of key operational segments, for example, by extending the waiting time for trains entering and exiting the station on platform A. The system simulates this adjustment in the timeline diagram and recalculates the alternating departure intervals between all adjacent trains after the adjustment. Through iterative adjustments and recalculations, all alternating departure intervals eventually reach a unified and stable tracking interval value (e.g., 125 seconds).

[0049] By extracting and analyzing the initial departure intervals from the time series diagram, imbalances in the departure sequence can be effectively identified. Furthermore, by selectively adjusting the duration of key operational stages and validating the effects using the time series diagram, fluctuating initial intervals can be optimized into uniform tracking intervals. This process significantly improves the regularity and balance of train departures, contributing to enhanced overall line operational efficiency and passenger experience, while ensuring the scientific rigor and visualization of interval optimization.

[0050] According to the train interval analysis method provided by the present invention, after obtaining a uniform interval, the interval is verified by analytical method for standard multi-car interference scenarios; wherein, the analytical method calculates the verification interval based on the curve entry route processing time, train curve entry running time, curve exit route processing time and train curve exit running time.

[0051] Specifically, after analyzing the standard multi-train interference scenario of "pre-station crossover" using the time sequence diagram method and obtaining a uniform tracking interval of 125 seconds, the system uses an analytical method to verify the result. Based on the fixed pattern of this standard scenario, the system extracts preset key time parameters: the time required for the train to enter platform A via the turnout, the time for the train to travel from the starting signal of the route to platform A, the time required for the train to exit platform A, and the time required for the train to exit the critical axle counting section after starting and running from platform A. The system sums the values ​​of these four time parameters to calculate an independent verification interval. Subsequently, the system compares the verification interval calculated by the analytical method with the uniform interval (125 seconds) obtained after optimization using the time sequence diagram method to verify the rationality and accuracy of the optimization results.

[0052] By introducing an analytical method for independent verification after optimization using the time-series graph method, this approach provides dual assurance for the interval analysis results in complex multi-vehicle interference scenarios. This verification mechanism can effectively cross-validate the rationality and reliability of the optimized interval, enhancing the credibility of the analysis conclusions. It also helps to identify potential calculation biases or unreasonable assumptions in the optimization process, thereby systematically improving the robustness and reliability of the interval analysis method.

[0053] This invention categorizes different operating path scenarios, covering both the conventional complex scenario of "two-vehicle interference" and the special scenario of "three-vehicle or more-vehicle interference," making its applicability far exceed existing same-path analysis methods. For the two types of scenarios, it employs an "analytical method" and a "time-sequence diagram method + analytical method," respectively. The analytical method can quickly calculate standard scenario intervals, while the time-sequence diagram method can intuitively locate limiting points in complex scenarios, balancing accuracy and efficiency. The calculation parameters can be adjusted according to actual signal design, station layout, and operational needs, flexibly adapting to the operating conditions of different urban rail transit lines. By clearly defining limiting points and control timing, it ensures that train intervals meet safety requirements while optimizing interval balance and improving line operating efficiency.

[0054] The train interval analysis apparatus provided by the present invention will be described below. The train interval analysis apparatus described below and the train interval analysis method described above can be referred to in correspondence.

[0055] like Figure 6 The image shows a train interval analysis device provided by the present invention, comprising: The running path acquisition module 610 is used to acquire the running path information of the scenario to be analyzed. The running path information is used to characterize the different travel routes of at least two trains in the target section. The scene classification module 620 is used to classify the scene to be analyzed into two-vehicle interference or multi-vehicle interference based on the running path information. The two-vehicle analysis module 630 is used to analyze and obtain the tracking interval based on the preset set of limit points and the set of time segments if the two-vehicle interference is classified as a two-vehicle interference class. The multi-train analysis module 640 is used to first construct a timing diagram based on the control timing if the train is classified as a multi-train interference type, then read the train alternating departure interval from the timing diagram and obtain a unified interval by adjusting the timing of key links.

[0056] Figure 7 An example is a schematic diagram of the physical structure of an electronic device, such as... Figure 7 As shown, the electronic device may include a processor 710, a communications interface 720, a memory 730, and a communication bus 740. The processor 710, communications interface 720, and memory 730 communicate with each other via the communication bus 740. The processor 710 can call logical instructions in the memory 730 to execute a method for analyzing train intervals. This method includes: acquiring the running path information of the scenario to be analyzed, whereby the running path information characterizes the different travel routes of at least two trains within a target section; classifying the scenario to be analyzed into a two-train interference type or a multi-train interference type based on the running path information; if classified as a two-train interference type, then parsing the tracking interval according to a preset set of constraint points and a set of time stages; if classified as a multi-train interference type, then first constructing a timing diagram based on the control timing, then reading the train alternating departure interval from the timing diagram and obtaining a unified interval by adjusting the time of key stages.

[0057] Furthermore, the logical instructions in the aforementioned memory 730 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0058] On the other hand, the present invention also provides a computer program product, which includes a computer program that can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer can execute the train interval analysis method provided by the above methods. The method includes: acquiring the running path information of the scenario to be analyzed, the running path information being used to characterize the different travel routes of at least two trains in the target section; classifying the scenario to be analyzed into a two-train interference class or a multi-train interference class based on the running path information; if classified as a two-train interference class, then parsing the tracking interval according to a preset set of constraint points and a set of time links; if classified as a multi-train interference class, then first constructing a timing diagram according to the control timing, then reading the train alternating departure interval from the timing diagram and obtaining a unified interval by adjusting the time of key links.

[0059] In another aspect, the present invention also provides a non-transitory computer-readable storage medium storing a computer program thereon. When executed by a processor, the computer program implements the train interval analysis method provided by the above methods. The method includes: acquiring the running path information of the scenario to be analyzed, the running path information being used to characterize the different travel routes of at least two trains in a target section; classifying the scenario to be analyzed into a two-train interference class or a multi-train interference class based on the running path information; if classified as a two-train interference class, then parsing the tracking interval according to a preset set of constraint points and a set of time links; if classified as a multi-train interference class, then first constructing a timing diagram according to the control timing, then reading the train alternating departure interval from the timing diagram and obtaining a unified interval by adjusting the time of key links.

[0060] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0061] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., including several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods of various embodiments or some parts of embodiments.

[0062] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; 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 analyzing train headway, characterized in that, include: Obtain the running path information of the scenario to be analyzed, wherein the running path information is used to characterize the different travel routes of at least two trains within the target section; Based on the aforementioned path information, the scenario to be analyzed is classified as either two-vehicle interference or multi-vehicle interference. If it is classified as a two-car interference type, the tracking interval is obtained by analyzing the preset set of restriction points and time links. The set of restriction points includes the turnout conversion completion position, the axle counting section clearing position and the route start signal position. The set of time links includes the turnout conversion time, route processing time, train start time, train running to the target position time and train end-changing time. If it is classified as a multi-train interference type, a timing diagram is first constructed based on the control timing, and then the train alternating departure interval is read from the timing diagram and a unified interval is obtained by adjusting the timing of key links. The step of constructing a timing diagram based on control timing specifically includes: determining the core control timing rules for multi-train operation based on station signal layout and operation logic; establishing a coordinate system with time as the horizontal axis and train operation stages as the vertical axis; marking the time nodes of each train in key operation stages in the coordinate system according to the control timing rules; and connecting the time nodes corresponding to each train to form a timing diagram representing the time correlation of multi-train operation. The step of reading the train alternating departure interval from the time sequence diagram and obtaining a unified interval by adjusting the time of key links specifically includes: extracting the alternating departure interval of adjacent trains from the time sequence diagram; identifying the unbalanced departure patterns in the alternating departure interval; adjusting the duration of at least one key operation link based on the departure balance requirement; and recalculating the adjusted alternating departure interval until a unified tracking interval is obtained.

2. The method for analyzing train intervals according to claim 1, characterized in that, The step of parsing the tracking interval based on the preset set of constraint points and time intervals specifically includes: Based on the route characteristics and driving direction of the preceding and following vehicles within the target section, the interference between the two vehicles is divided into several sub-scenarios. For each sub-scene, identify the interval constraint point corresponding to the current two-vehicle interference scene; Based on the aforementioned interval limit points, the key time components constituting the driving interval are determined; The corresponding durations of each key time segment are summed up to obtain the sub-intervals of the corresponding scenarios; Compare all sub-intervals and determine the sub-interval with the largest value as the tracking interval.

3. The method for analyzing train intervals according to claim 1 or 2, characterized in that, After obtaining the uniform interval, the method further includes: An analytical method was used to perform interval verification on a standard multi-vehicle interference scenario; The analytical method calculates the verification interval based on the curve entry route processing time, the train curve entry operation time, the curve exit route processing time, and the train curve exit operation time.

4. A device for analyzing train headway, characterized in that, include: The running path acquisition module is used to acquire the running path information of the scenario to be analyzed, and the running path information is used to characterize the different travel routes of at least two trains in the target section. The scene classification module is used to classify the scene to be analyzed into a two-vehicle interference class or a multi-vehicle interference class based on the running path information. The two-car analysis module is used to analyze and obtain the tracking interval based on the preset set of restriction points and time links if it is classified as a two-car interference class. The set of restriction points includes the turnout conversion completion position, the axle counting section clearing position and the route start signal position. The set of time links includes the turnout conversion time, route processing time, train start time, train running to the target position time and train end-changing time. The multi-train analysis module is used to first construct a timing diagram based on the control timing if the train is classified as a multi-train interference type, and then read the train alternating departure interval from the timing diagram and obtain a unified interval by adjusting the timing of key links. The multi-train analysis module constructs a timing diagram based on the control timing sequence, specifically including: determining the core control timing rules for multi-train operation based on station signal layout and operation logic; establishing a coordinate system with time as the horizontal axis and train operation stages as the vertical axis; marking the time nodes of each train in key operation stages in the coordinate system according to the control timing rules; and connecting the corresponding time nodes of each train to form a timing diagram representing the time correlation of multi-train operation. The multi-train analysis module reads the train alternating departure interval from the time sequence diagram and obtains a unified interval by adjusting the time of key links. Specifically, it includes: extracting the alternating departure interval of adjacent trains from the time sequence diagram; identifying the unbalanced departure patterns in the alternating departure interval; adjusting the duration of at least one key operation link based on the departure balance requirement; and recalculating the adjusted alternating departure interval until a unified tracking interval is obtained.

5. An electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the computer program, it implements the train interval analysis method as described in any one of claims 1 to 3.

6. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the train interval analysis method as described in any one of claims 1 to 3.

7. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by the processor, it implements the train interval analysis method as described in any one of claims 1 to 3.

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