A protected section dynamic search display method, device and medium

Abstract

This invention relates to a method, device, and medium for dynamically searching and displaying protected sections. The method loads train information through an ATS system, identifies WTC cars, and verifies the validity and position changes of train positioning. It also verifies the consistency of turnout bifurcation status and direction by combining bifurcation direction value parameters. Furthermore, it filters legal path devices and updates the section occupancy status, ultimately achieving accurate calculation and display of protected sections. Compared with existing technologies, this invention significantly improves the real-time performance and positioning accuracy of train occupancy display, effectively reduces scheduling errors caused by information lag or positioning ambiguity, and provides key technical support for the efficiency and safety of subway train scheduling.

Description

Technical Field

[0001] This invention relates to rail transit signaling systems, and in particular to a method, device, and medium for dynamic search and display of protected sections. Background Technology

[0002] In the train occupancy detection process of the Automatic Train Control (ATS) system, the traditional approach mainly relies on track circuit information to calculate and display the train's position. However, the functionality of track circuits is quite limited—they can only determine whether a train is occupied within a specific track section, and cannot further provide the train's specific coordinates or real-time dynamics within the section. This makes it difficult for dispatchers to accurately locate the train on the track, which to some extent limits the precision and timeliness of dispatching decisions.

[0003] A search of Chinese Patent Publication No. CN116118824A reveals a method for area filtering in a TACS system, specifically including the following steps: Step S101, an area to be filtered appears; Step S102, confirming whether there are non-communication vehicles in the filtering area; Step S103, moving the non-communication vehicles to other designated locations; Step S104, activating the corresponding filtering area switch or knob; Step S105, the trackside target controller collects the status of the filtering switch or knob and sends it to the trackside resource manager; Step S106, the central dispatcher confirms the area filtering; Step S107, the trackside resource manager checks the consistency between the filtering switch or knob activated by station-level staff and the area filtering by the central dispatcher; Step S108, the dispatcher performs a second confirmation; Step S109, the trackside resource manager checks the correctness of the verification code within a time limit. If correct, the filtering of the area is completed and a successful filtering result is reported; otherwise, a filtering failure result is reported. The existing patent improves screening efficiency and saves a lot of costs on secondary detection equipment and cables, eliminating the need to send drivers into the section to take over trains; however, the patent does not cover the real-time and high-precision display of train occupancy sections; therefore, how to significantly improve the real-time performance and positioning accuracy of train occupancy display, effectively reduce scheduling errors caused by information lag or positioning ambiguity, and provide key technical support for the efficiency and safety of subway train dispatching has become a technical problem that needs to be solved. Summary of the Invention

[0004] The purpose of this invention is to overcome the defects of the prior art by providing a method, device and medium for dynamic search and display of protected areas.

[0005] The objective of this invention can be achieved through the following technical solutions: According to a first aspect of the present invention, a method for dynamic search and display of protected sections is provided. The method is used in a TACS system, which includes a trackside train controller (WTC). The method loads train information through an ATS system, identifies the WTC car, and verifies the validity and position change of the train positioning. It also verifies the consistency of the turnout bifurcation status and direction by combining the bifurcation direction value parameter, thereby filtering legal path equipment and updating the section occupancy status, and finally realizing the accurate calculation and display of protected sections.

[0006] As a preferred technical solution, the method specifically includes the following steps: Step S1: The ATS system completes the system initialization process and loads the real-time status information of the train. Step S2: The main control server in the ATS system identifies the communication type of each train in the current cycle and completes the dynamic switching and adaptation of the communication mode. Step S3: The main control server verifies the validity of the train head and tail positioning data and filters out valid positioning information. Step S4: For downgraded trains controlled by WTC, compare the train position data of the current cycle with that of the previous cycle. If a position change is detected, proceed to step S5; otherwise, end the process. Step S5: The main control server takes the track equipment corresponding to the head or tail of the train as the starting node, calculates the direction of travel of the train, and searches for the next associated track equipment in sequence. If the next associated equipment is a turnout, proceed to step S6. If the next associated equipment is the end of the protection section, proceed to step S7. Step S6: The main control server matches the branch turnout corresponding to the train travel path according to the branch direction value parameter, and verifies the consistency between the actual state of the turnout and the configured direction. Step S7: Terminate the search process and save the list of valid devices obtained from the current search as the core component device set of the protected area. Step S8: Within the current calculation cycle, clear the historical equipment occupancy records, update the equipment occupancy status for the current cycle, and push the calculated protected area information to the station map display module to complete the real-time update and display of the protected area.

[0007] As a preferred technical solution, in step S2, the main control server in the ATS system adopts an active polling mechanism to identify the communication type of each train in the current cycle.

[0008] As a preferred technical solution, the train positioning data validity verification in step S3 is a multi-dimensional verification of the precise positioning information of the head and tail of the train by the main control server.

[0009] As a preferred technical solution, the multi-dimensional verification includes a four-dimensional verification mechanism that verifies integrity, accuracy threshold, timestamp validity, and consistency of location source.

[0010] As a preferred technical solution, step S6 specifically includes: Based on the preset bifurcation direction value parameters, the turnouts corresponding to the train's travel path are matched, and it is verified whether the actual physical state of the turnouts is consistent with the path requirements, so as to ensure that the train passes through the turnouts safely according to the planned path.

[0011] As a preferred technical solution, in step S7, invalid historical equipment occupancy records are cleared and the equipment occupancy status of the current period is updated within a fixed calculation cycle, and the accurately calculated protected area information is pushed to the station map display module.

[0012] As a preferred technical solution, the station map display module presents the calculated protected area information to the dispatcher in a real-time and accurate manner.

[0013] According to a second aspect of the present invention, an electronic device is provided, including a memory and a processor, wherein the memory stores a computer program, and the processor executes the program to implement the method described thereon.

[0014] According to a third aspect of the present invention, a computer-readable storage medium is provided having a computer program stored thereon, which, when executed by a processor, implements the method described thereon.

[0015] Compared with the prior art, the present invention has the following advantages: 1) This invention integrates multi-dimensional parameters such as train divergence information and direction of travel to construct a dynamic search algorithm, which can quickly calculate and output the real-time occupancy position of the train on the track, further enhancing the ATS system's ability to accurately locate trains and ensuring that dispatchers can grasp the operational status of all trains on the entire line in real time and clearly. 2) This invention adopts a four-dimensional verification innovation for positioning data: through full-dimensional verification of integrity, accuracy threshold, timestamp validity, and positioning source consistency, it breaks through the limitations of traditional single verification. The beneficial effect is to greatly improve the credibility of positioning data, avoid the calculation deviation of protected sections caused by data errors from the source, and lay a solid data foundation for dynamic path search in vehicle-to-vehicle communication scenarios. 3) This invention adopts an innovative dynamic consistency verification of turnouts: based on the diversity parameter, a linkage verification logic is established from the configured direction to the actual state to the train path, replacing the static verification mode. The beneficial effects are accurate matching of train travel path and turnout status, proactive interception of turnout malfunction risk, and protection of the legality and safety of the protected section. 4) This invention adopts an innovative periodic atomic update mechanism: it uses an adjustable periodic clean-up-push operation, combined with data governance and fault degradation strategies. The beneficial effects are to achieve real-time dynamic synchronization of the protected section, while ensuring operational continuity in extreme scenarios and balancing the system's real-time and stability requirements. Attached Figure Description

[0016] Figure 1 This is a flowchart illustrating the dynamic search and display method for protected areas according to the present invention. Figure 2 This is a schematic diagram of the turnout path topology of the present invention. Figure 3 This is a schematic diagram of the search logic flow based on the diversity parameter of the present invention. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0018] This invention is implemented within a system architecture oriented towards vehicle-to-vehicle communication. Trains can directly and continuously transmit their precise location, real-time speed, and direction of travel—key operational status information—to the ATS system via a vehicle-to-vehicle communication link. Based on this high-frequency, accurate dynamic data, the ATS system can update train positions in real time on the dispatch display screen, achieving a dynamic and visual presentation of the train's trajectory. Compared to traditional track circuit modes, this approach significantly improves the real-time performance and positioning accuracy of train occupancy displays, effectively reducing dispatching errors caused by information lag or ambiguous positioning, and providing crucial technical support for the efficiency and safety of subway train dispatching.

[0019] Meanwhile, the main control server (MCS) further optimized the efficiency and accuracy of positioning display during this process. By integrating multi-dimensional parameters such as train divergence information and direction of travel data, it constructed a dynamic search algorithm that can quickly calculate and output the real-time occupancy position of the train on the track. This further enhanced the ATS system's ability to accurately locate trains, ensuring that dispatchers can grasp the operational status of all trains on the entire line in real time and clearly.

[0020] This invention is based on the core technical logic of dynamic search of protected sections in vehicle-to-vehicle ATS system. Combining the limitations of traditional path search methods, it summarizes the key improvements from three dimensions: data processing, path verification, and update mechanism, highlighting the technical advantages of adapting to vehicle-to-vehicle communication scenarios.

[0021] like Figure 1 As shown, the complete logic of dynamic search for protected sections is demonstrated: starting from loading train messages, it first determines whether it is a WTC train. If so, it calculates its effective precise location and compares the position changes. After the position changes, it dynamically searches for the next device, sequentially checking whether it is a turnout, whether the turnout branching status is consistent, and then determining whether it is the terminated device. If so, it saves the list of valid devices, then clears the old device occupancy, sets the new device occupancy, and finally updates the standby display of WTC devices. At the same time, the legend on the right supplements the correspondence between devices and scenes, and the overall dynamic update and display management of WTC train protected sections is realized.

[0022] The specific process of the method of the present invention is as follows: Step S1) Start the vehicle-to-vehicle ATS system software, complete the system initialization process, and load the real-time status information of the train through the interface thread, including core data such as location, communication mode, and operating status; Step S2) The main control server adopts an active polling mechanism to identify the communication type of each train in the current cycle and complete the dynamic switching and adaptation of the communication mode. Step S3) The main control server performs validity verification on the precise positioning data of the head and tail of the train (including data integrity, accuracy threshold, and timestamp validity verification) and filters valid positioning information; Step S4) For trains downgraded to WTC type, compare the train location data of the current cycle with that of the previous cycle. If a location change is detected, proceed to the subsequent protection zone search process. Step S5) The main control server takes the track equipment corresponding to the front or rear of the train as the starting node, calculates the direction of travel of the train, and searches for the next associated track equipment in sequence. Step S6) If the next associated device is a turnout, the system matches the turnout corresponding to the train travel path based on the diversity parameter (bifurcation direction value) and verifies the consistency between the actual state of the turnout and the configured direction. Step S7) If the next associated device is the end device of the protected segment, then terminate the search process, save the list of valid devices obtained from the current search as the core constituent device set of the protected segment; Step S8) Within the current calculation cycle, clear the historical equipment occupancy records, update the equipment occupancy status for the current cycle, and push the accurately calculated protected area information to the station map display module to complete the real-time update and display of the protected area.

[0023] The WTC (Wayside Train Controller) mentioned above refers to different communication types for trains.

[0024] The aforementioned train positioning data validity verification refers to the main control server performing multi-dimensional verification of the precise positioning information of the train's head and tail to ensure that the data meets the accuracy requirements and logical legality of the protection section calculation, and avoids errors in the protection section calculation due to invalid data (such as section omission, misdisplay, etc.). It is a fundamental prerequisite for the safe operation of the signaling system.

[0025] The aforementioned turnout bifurcation direction and state consistency verification refers to the system matching the turnouts corresponding to the train's travel path according to the preset bifurcation direction parameters (divergence value), and verifying whether the actual physical state of the turnout is consistent with the path requirements, ensuring that the train safely passes through the turnout according to the planned path. It is a key link in the path legality verification during the protection section search.

[0026] The aforementioned periodic update of the protected area refers to the system clearing historical invalid equipment occupancy records and updating the equipment occupancy status of the current period within a fixed calculation cycle, and pushing the accurately calculated protected area information to the station map display module to realize dynamic refreshing of the protected area and ensure that the station status seen by the dispatcher is consistent with the actual train operation status.

[0027] The main control server's algorithm for dynamically searching and displaying train protection zones in the vehicle-to-vehicle system is based on multi-source data fusion and an efficient indexing mechanism. This allows for accurate and real-time positioning of the train's occupancy status on the track, providing fundamental support for dispatch instruction generation and safety protection. Specific details are as follows: 1) Train Positioning Data Validation: The train's head and tail positioning data are verified from multiple dimensions, including completeness, accuracy, timestamp, and consistency of the positioning source, to filter valid information. Positioning validity verification serves as the entry point and gatekeeper of the entire protected area calculation process, its core function being to output reliable data. Only positioning data that passes multi-dimensional verification can trigger subsequent location comparison and device search processes, directly determining the fundamental reliability of all subsequent calculations and forming the data cornerstone of the technical closed loop.

[0028] 2) Turnout bifurcation direction and status consistency verification: Based on the diversity parameter, the corresponding bifurcation turnouts of the matching path are verified to ensure consistency between the actual state of the turnout and the configured direction. As an intermediate core verification link, it undertakes the path search requirements after receiving the positioning data. Its core function is to ensure the legality of the path. By verifying the turnout status, it filters out valid equipment that conforms to the train's travel path, avoiding misconfiguration of the protected section due to abnormal turnout status. It is a key bridge connecting the positioning data and the final section generation.

[0029] 3) Periodic update mechanism for protected areas and station map display: Historical data is cleaned up and equipment occupancy status is updated at fixed intervals, and accurate section information is pushed to the station map visualization rendering. As the terminal output link, its core function is to achieve status synchronization, present the calculated protected area information to the dispatcher in a real-time and accurate manner, and at the same time ensure the system's operational efficiency through periodic data governance. It is the value realization outlet of the technology closed loop.

[0030] like Figure 2 As shown, the topology section illustrates the connection relationship of turnouts ABCD, and labels the directional attributes of each turnout (e.g., turnout A is outgoing, Course: right, Divergence; turnout C is incoming, Course: left, Convergence), clearly defining the turnout's branching, convergence type, and direction of travel configuration.

[0031] like Figure 3 The logic flow section begins with the input bifurcation value, sequentially passing bifurcation state verification and direction consistency verification, ultimately completing path validity screening. This embodies the core logic of verifying the match between the turnout state and direction using the diversity parameter (bifurcation value) to select valid paths. The overall diagram clearly presents the turnout topology and the path search and verification process driven by the diversity parameter, intuitively demonstrating the correlation between the direction configuration of the bifurcation turnout and path validity screening.

[0032] The above is an introduction to the method embodiments. The following embodiments using electronic devices and storage media will further illustrate the solution of the present invention.

[0033] This invention also provides an electronic device including a central processing unit (CPU), which can perform various appropriate actions and processes according to computer program instructions stored in a read-only memory (ROM) or loaded from a storage unit into a random access memory (RAM). The RAM may also store various programs and data required for device operation. The CPU, ROM, and RAM are interconnected via a bus. Input / output (I / O) interfaces are also connected to the bus.

[0034] Multiple components in the device are connected to the I / O interface, including: input units such as keyboards and mice; output units such as various types of displays and speakers; storage units such as disks and optical discs; and communication units such as network interface cards (NICs), modems, and wireless transceivers. The communication unit allows the device to exchange information / data with other devices through computer networks such as the Internet and / or various telecommunications networks.

[0035] The processing unit executes the various methods and processes described above, such as methods S1 to S8. For example, in some embodiments, methods S1 to S8 may be implemented as computer software programs tangibly contained in a machine-readable medium, such as a storage unit. In some embodiments, part or all of the computer program may be loaded and / or installed on the device via ROM and / or a communication unit. When the computer program is loaded into RAM and executed by the CPU, one or more steps of methods S1 to S8 described above may be performed. Alternatively, in other embodiments, the CPU may be configured to execute methods S1 to S8 by any other suitable means (e.g., by means of firmware).

[0036] The functions described above in this document can be performed, at least in part, by one or more hardware logic components. For example, exemplary types of hardware logic components that can be used, without limitation, include: Field Programmable Gate Arrays (FPGAs), Application-Specific Integrated Circuits (ASICs), Application Standard Products (ASSPs), System-on-Chip (SoCs), Complex Programmable Logic Devices (CPLDs), and so on.

[0037] The program code used to implement the methods of the present invention can be written in any combination of one or more programming languages. This program code can be provided to a processor or controller of a general-purpose computer, special-purpose computer, or other programmable data processing device, such that when executed by the processor or controller, the program code causes the functions / operations specified in the flowcharts and / or block diagrams to be implemented. The program code can be executed entirely on the machine, partially on the machine, as a standalone software package partially on the machine and partially on a remote machine, or entirely on a remote machine or server.

[0038] In the context of this invention, a machine-readable medium can be a tangible medium that may contain or store a program for use by or in conjunction with an instruction execution system, apparatus, or device. A machine-readable medium can be a machine-readable signal medium or a machine-readable storage medium. Machine-readable media can include, but are not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination of the foregoing. More specific examples of machine-readable storage media include electrical connections based on one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination of the foregoing.

[0039] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A method for dynamic search and display of protected sections, the method being used in a TACS system, the TACS system including a trackside train controller (WTC), characterized in that, This method loads train information through the ATS system, identifies downgraded trains controlled by WTC, and verifies the validity and position changes of train positioning. It also verifies the consistency of turnout bifurcation status and direction by combining bifurcation direction value parameters, thereby filtering legal path equipment and updating the section occupancy status, and finally achieving accurate calculation and display of protected sections. The method specifically includes the following steps: Step S1: The ATS system completes the system initialization process and loads the real-time status information of the train. Step S2: The main control server in the ATS system identifies the communication type of each train in the current cycle and completes the dynamic switching and adaptation of the communication mode. Step S3: The main control server verifies the validity of the train head and tail positioning data and filters out valid positioning information. Step S4: For downgraded trains controlled by WTC, compare the train position data of the current cycle with that of the previous cycle. If a position change is detected, proceed to step S5; otherwise, end the process. Step S5: The main control server takes the track equipment corresponding to the head or tail of the train as the starting node, calculates the direction of travel of the train, and searches for the next associated track equipment in sequence. If the next associated equipment is a turnout, proceed to step S6. If the next associated equipment is the end of the protection section, proceed to step S7. Step S6: The main control server matches the branch turnout corresponding to the train travel path according to the branch direction value parameter, and verifies the consistency between the actual state of the turnout and the configured direction. Step S7: Terminate the search process and save the list of valid devices obtained from the current search as the core component device set of the protected area. Step S8: Within the current calculation cycle, clear the historical equipment occupancy records, update the equipment occupancy status for the current cycle, and push the calculated protected area information to the station map display module to complete the real-time update and display of the protected area. The train positioning data validity verification in step S3 is a multi-dimensional verification of the precise positioning information of the head and tail of the train by the main control server. Step S6 specifically involves: Based on the preset bifurcation direction value parameters, the turnouts corresponding to the train's travel path are matched, and it is verified whether the actual physical state of the turnouts is consistent with the path requirements, so as to ensure that the train passes through the turnouts safely according to the planned path.

2. The method for dynamic search and display of protected areas according to claim 1, characterized in that, In step S2, the master control server in the ATS system adopts an active polling mechanism to identify the communication type of each train in the current cycle.

3. The method for dynamic search and display of protected areas according to claim 1, characterized in that, The multi-dimensional verification includes a four-dimensional verification mechanism that verifies integrity, accuracy threshold, timestamp validity, and consistency of location source.

4. The method for dynamic search and display of protected areas according to claim 1, characterized in that, In step S7, invalid historical equipment occupancy records are cleared and the equipment occupancy status of the current period is updated within a fixed calculation cycle, and the accurately calculated protected area information is pushed to the station map display module.

5. The method for dynamic search and display of protected areas according to claim 4, characterized in that, The station map display module presents the calculated protected area information to the dispatcher in a real-time and accurate manner.

6. An electronic device comprising a memory and a processor, wherein the memory stores a computer program, characterized in that, When the processor executes the program, it implements the method as described in any one of claims 1 to 5.

7. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the program is executed by the processor, it implements the method as described in any one of claims 1 to 5.

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