Train rear screen retaining method and train control system
By acquiring train location information and judging influencing factors, and flexibly carrying out post-screening checks and maintenance, the problem of low operational efficiency caused by waiting for the axle counting section to be cleared during the post-screening process of trains is solved, and more efficient train tracking and operation management is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- BEIJING URBAN CONSTR INTELLIGENT CONTROL TECH CO LTD
- Filing Date
- 2024-01-30
- Publication Date
- 2026-05-12
AI Technical Summary
Existing train control technology requires waiting for the axle counting section to be cleared during the post-train screening process, which leads to reduced operational efficiency.
By obtaining the train's location information, we can determine the factors affecting the subsequent screening, including the status of the turnouts and the occupancy of adjacent axle counting sections, and decide whether to continue maintaining the subsequent screening to avoid waiting for the axle counting sections to be cleared.
This improved train tracking time, reduced operating intervals, and increased operational efficiency.
Smart Images
Figure CN117885782B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of rail transportation, and more specifically, to a method for holding a rear screen of a train and a train control system. Background Technology
[0002] Communication Based Train Control (CBTC) is a continuous automatic train control system built upon active train positioning technology that does not rely on trackside train occupancy detection equipment, continuous vehicle-to-ground two-way data communication technology, and onboard and ground processors capable of performing safety functions.
[0003] Current train control technology typically screens trains during operation to eliminate any hidden trains that may be present ahead or behind. Screening generally includes headboard screening and tailboard screening. Existing tailboard screening methods only consider whether the distance between the selected train and the starting point of its axle counting section is less than the minimum track length for screening, and whether the adjacent axle counting section behind the selected train's tailboard is empty.
[0004] When a non-communication train completes its initial screening at the rear of the train, but before it is upgraded to a communication train, continuous inspection and maintenance of the current train's rear screening are required. At this time, trains can enter the rear axle counting section. If a train occupies the rear axle counting section, and inspection continues according to the initial screening conditions, the train must stop and clear the axle counting section. This clearing process is time-consuming, and waiting for clearing significantly impacts operational efficiency.
[0005] There is currently no effective solution to the problem that the train post-screening process requires waiting for the axle counting section to be cleared, which leads to reduced operational efficiency. Summary of the Invention
[0006] This invention provides a method for holding a rear screen of a train and a train control system.
[0007] According to one aspect of the embodiments of this application, a method for maintaining a train rear screen is provided, comprising: after the current train completes the initial rear screen, acquiring the position information of the current train; determining, based on the position information of the current train, factors affecting the current train's continued rear screen; and determining, based on the factors, whether the current train should continue to maintain the rear screen.
[0008] Furthermore, the location information of the current train is obtained, including: obtaining data of all trains in the axle counting section where the tail of the current train is located; and determining whether the current train is the last train in the axle counting section where the tail of the current train is located based on the data of all trains.
[0009] Furthermore, the current train's location information includes at least: whether the current train is the last car in the axle counting section where its tail is located, or whether the current train is not the last car in the axle counting section where its tail is located; and determining the influencing factors affecting the current train's continued post-screening based on the current train's location information, including: when the current train is the last car in the axle counting section where its tail is located, determining the influencing factor as the state of the adjacent axle counting section behind the current train; and when the current train is not the last car in the axle counting section where its tail is located, determining the influencing factor as the operating state of the first train behind the current train.
[0010] Furthermore, when the influencing factor is the status of the adjacent axle counting section behind the current train, the system determines whether the current train should continue to maintain the rear screening based on the influencing factor, including: checking whether the turnout status of the adjacent axle counting section behind meets the preset turnout conditions; if so, checking the occupancy status of the adjacent axle counting section behind, and determining whether to continue to maintain the rear screening based on the occupancy status; otherwise, determining whether to continue to maintain the rear screening based on the turnout status.
[0011] Furthermore, the system checks whether the turnout conditions of the adjacent axle counting section behind meet the preset turnout conditions, including: checking whether there are four turnouts in the adjacent axle counting section behind, and whether the turnout is in the correct or reverse position; if there is a turnout, or the turnout is in the correct or reverse position, the system determines that the turnout conditions meet the preset turnout conditions; otherwise, the system determines that the turnout conditions do not meet the preset turnout conditions.
[0012] Furthermore, the decision on whether to continue post-screening is based on the turnout situation includes: when there are four turnouts, finding the physical section where the turnout is located, and determining all associated axle counting sections based on the physical section; determining whether all associated axle counting sections are occupied; if none of the associated axle counting sections are occupied, determining to continue post-screening; otherwise, determining that post-screening cannot continue and that initial post-screening needs to be performed again.
[0013] Furthermore, the determination of whether to continue maintaining the rear screen based on the occupancy status includes: when the adjacent axle counting section behind is not occupied, determining to continue maintaining the rear screen; when the adjacent axle counting section behind is occupied, obtaining the train operation status of the adjacent axle counting section behind, and determining whether to continue maintaining the rear screen based on the train operation status.
[0014] Furthermore, the train operation status of the adjacent axle counting section is obtained, and the decision on whether to continue the rear screening is made based on the train operation status. This includes: detecting whether there is a communication train in the adjacent axle counting section; if there is no communication train, it is determined that the rear screening cannot be continued and the initial rear screening needs to be restarted; if there is a communication train, the operation parameters of the communication train are further obtained, and the decision on whether to continue the rear screening is made based on the operation parameters of the communication train.
[0015] Furthermore, the operating parameters of the communication train are obtained, and a determination is made based on these parameters to continue the subsequent screening process. This includes: obtaining the relative positional relationship between the communication train and the current train, wherein the relative positional relationship includes at least two scenarios: the relative distance is decreasing and the relative distance is increasing. When the relative positional relationship indicates a decreasing trend, it is determined whether the communication train has completed the initial screening. If so, it is determined to continue the subsequent screening; otherwise, it is determined that the subsequent screening cannot be continued and the initial subsequent screening needs to be restarted. When the relative positional relationship indicates an increasing trend, it is determined whether the communication train has completed the initial screening. If so, it is determined to continue the subsequent screening; otherwise, it is determined that the subsequent screening cannot be continued and the initial subsequent screening needs to be restarted.
[0016] Furthermore, the relative positional relationship between the communication train and the current train is obtained, including: obtaining the running direction and front-to-back relationship between the communication train and the current train; and determining the relative positional relationship between the communication train and the current train based on the running direction and front-to-back relationship.
[0017] Furthermore, the relative positional relationship between the communication train and the current train is determined based on their operating direction and preceding / following relationship. This includes: when the communication train and the current train are operating in the same direction, the relative positional relationship is determined based on their preceding / following relationship, wherein when the communication train is in front of the current train, the relative distance between the two trains is determined to be increasing; when the communication train is behind the current train, the relative distance between the two trains is determined to be decreasing. Similarly, when the communication train and the current train are operating in opposite directions, the relative positional relationship is determined based on their preceding / following relationship, wherein when the communication train is in front of the current train, the relative distance between the two trains is determined to be decreasing; when the communication train is behind the current train, the relative distance between the two trains is determined to be increasing.
[0018] Furthermore, when the influencing factor is the operating status of the first train behind the current train, the system determines whether the current train should continue to maintain the rear screening based on the influencing factor. This includes: determining whether the first train behind the current train has completed the front screening; if so, determining that the rear screening should continue; otherwise, determining that the rear screening should not continue and that the initial rear screening needs to be performed again.
[0019] According to another aspect of the embodiments of this application, a train control system is also provided, which employs the train rear screen holding method as described above.
[0020] According to another aspect of the embodiments of this application, a storage medium is also provided, the storage medium including a stored program that executes the above steps when the program is run.
[0021] According to another aspect of the embodiments of this application, an electronic device is also provided, including 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; wherein: the memory is used to store computer programs; and the processor is used to execute the steps in the above method by running the programs stored in the memory.
[0022] This application also provides a computer program product containing instructions that, when run on a computer, cause the computer to perform the steps in the above-described method.
[0023] This invention allows for the acquisition of train positional relationships after initial post-screening, and the determination of influencing factors affecting post-screening based on these relationships. This allows for a decision on whether to maintain post-screening based on these factors. This method enables flexible post-screening checks and maintenance by performing corresponding judgments for different scenarios, eliminating the need to wait for the train to clear the axle counting section. This significantly improves the tracking time for the current train, reduces operating intervals, and increases operational efficiency. Attached Figure Description
[0024] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings:
[0025] Figure 1 This is a hardware structure block diagram of a computer according to an embodiment of the present invention;
[0026] Figure 2 This is an optional schematic diagram of a train rear screen according to an embodiment of the present invention;
[0027] Figure 3 This is an optional flowchart of a method for maintaining the rear screen of a train according to an embodiment of the present invention;
[0028] Figure 4 This is an optional schematic diagram of a four-way turnout according to an embodiment of the present invention;
[0029] Figure 5 This is an optional schematic diagram of an embodiment of the present invention, showing the current train and other trains in a close proximity relationship.
[0030] Figure 6 This is another optional flowchart of the train rear screen retention method according to an embodiment of the present invention. Detailed Implementation
[0031] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, and not all of them. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present application. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of the present application can be combined with each other.
[0032] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.
[0033] Example 1
[0034] The method embodiment provided in Embodiment 1 of this application can be executed in a controller, server, computer, tablet, or similar computing scheduling device. Taking running on a computer as an example, Figure 1 This is a hardware structure block diagram of a computer according to an embodiment of the present invention. For example... Figure 1 As shown, a computer may include one or more ( Figure 1 Only one is shown in the diagram. A processor 102 (which may include, but is not limited to, a microprocessor MCU or a programmable logic device FPGA, etc.) and a memory 104 for storing data are also shown. Optionally, the computer may further include a transmission device 106 for communication functions and an input / output device 108. Those skilled in the art will understand that... Figure 1 The structure shown is for illustrative purposes only and does not limit the structure of the computer described above. For example, the computer may also include components that are larger than... Figure 1 The more or fewer components shown, or having the same Figure 1 The different configurations shown.
[0035] The memory 104 can be used to store computer programs, such as application software programs and modules, like the computer program corresponding to a method for holding a train rear screen in this embodiment of the invention. The processor 102 executes various functional applications and data processing by running the computer program stored in the memory 104, thereby implementing the aforementioned method. The memory 104 may include high-speed random access memory and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some instances, the memory 104 may further include memory remotely located relative to the processor 102, and these remote memories can be connected to the computer via a network. Examples of such networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.
[0036] The transmission device 106 is used to receive or send data via a network. Specific examples of the network described above may include a wireless network provided by a computer's communication provider. In one example, the transmission device 106 includes a Network Interface Controller (NIC), which can connect to other network devices via a base station to communicate with the Internet. In another example, the transmission device 106 may be a Radio Frequency (RF) module used for wireless communication with the Internet.
[0037] When an NCT (non-communication) train completes its initial screening at the rear end of the train, but before it is upgraded to a CT (communication) train, the rear screening of the current train needs to be continuously checked and maintained. The completion or incompleteness of the rear screening does not affect the train's upgrade to a CT train, so the inspection and maintenance of the rear screening for NCT and CT trains follow the same inspection principles and methods.
[0038] The conditions for its inspection differ from those for the initial screening inspection: the initial screening inspection requires that the distance from the rear of the train to the axle counting point behind it be less than the minimum operating train length, and that the axle counting section behind the train be empty. Only when both conditions are met is the initial screening of the current train considered complete. Figure 2 As shown.
[0039] When the train has completed its initial post-screening, and during the train's operation, continuous post-screening checks and maintenance are required, the two inspection conditions mentioned above for the initial screening can no longer be fully met. If the inspection is carried out according to the initial screening conditions, it will greatly affect operational efficiency. Therefore, after the post-screening checks and maintenance, further inspections are required.
[0040] This embodiment provides a method for retaining a rear screen on a train. Figure 3This is a flowchart of a method for maintaining a train rear screen according to an embodiment of the present invention, as shown below. Figure 3 As shown, the process includes the following steps:
[0041] S302, after the current train completes the initial post-screening, obtain the current train's position information;
[0042] S304, Determine the influencing factors that affect the current train's continued post-screening based on the current train's location information;
[0043] S306, determine whether the current train should continue to maintain the rear screening based on influencing factors.
[0044] In the above implementation method, after the train completes the initial post-screening, the train's positional relationship is obtained. Based on the train's positional relationship, the influencing factors affecting the train's post-screening are determined, and a decision on whether to maintain post-screening is made based on these factors. This method performs corresponding judgments for different scenarios, flexibly checking and maintaining post-screening without waiting for the train to clear the axle counting section, greatly improving the tracking time for the current train, reducing operating intervals, and increasing operational efficiency.
[0045] In a preferred embodiment of the present invention, the current train's position information includes at least: whether the current train is the last car in the axle counting section where its tail is located, or whether the current train is not the last car in the axle counting section where its tail is located; obtaining the current train's position information includes: obtaining data for all trains in the axle counting section where its tail is located; and determining whether the current train is the last car in the axle counting section where its tail is located based on the data for all trains. The current train's position affects the subsequent screening process; based on the different positions of the current trains, it can be identified in advance whether the subsequent screening can be maintained.
[0046] Specifically, when the current train is the last car in the axle counting section where the rear of the current train is located, the influencing factor is determined to be the state of the adjacent axle counting section behind the current train; when the current train is not the last car in the axle counting section where the rear of the current train is located, the influencing factor is determined to be the operating state of the first train behind the current train.
[0047] 1) When the influencing factor is the status of the adjacent axle counting section behind the current train, determine whether the current train should continue to maintain the rear screening based on the influencing factor, including: checking whether the turnout status of the adjacent axle counting section behind meets the preset turnout conditions; if so, check the occupancy status of the adjacent axle counting section behind and determine whether to continue to maintain the rear screening based on the occupancy status; otherwise, determine whether to continue to maintain the rear screening based on the turnout status.
[0048] Furthermore, the system checks whether the turnout status of adjacent axle counting sections meets the preset turnout conditions, including: checking whether there are four turnouts in the adjacent axle counting sections, and whether the turnouts are in the correct or reverse position; if there are turnouts, or the turnouts are in the correct or reverse position, the system determines that the turnout status meets the preset turnout conditions; otherwise, the system determines that the turnout status does not meet the preset turnout conditions. When there are four turnouts, the system locates the physical section where the turnout is located and determines all associated axle counting sections based on the physical section; it then determines whether any associated axle counting sections are occupied; if none of the associated axle counting sections are occupied, the system determines that the post-screening can continue; otherwise, the system determines that the post-screening cannot continue and the initial post-screening needs to be repeated.
[0049] Based on the axle counting section where the rear of the train is currently located, locate the adjacent axle counting section behind it, and then determine whether there is a switch in a four-way open state. Figure 4 This demonstrates the situation where a turnout is open in four positions. If a turnout is open in four positions, locate the physical section where the turnout is located, and then find all associated axle counting sections based on the physical section. Finally, determine if any of the associated axle counting sections is occupied. If so, it is considered that there may be an occupation situation, indicating a safety hazard in the subsequent physical section. This means that the current train's back screen cannot continue to be maintained, and the back screen is marked as incomplete, requiring a restart of the initial back screen. If all axle counting sections are empty, it is considered that there are no hidden trains behind, the current train's back screen can continue to be maintained, and the inspection process ends. If no turnout is found in the adjacent axle counting sections, or if the turnout is in the correct or reversed position, further inspection of the occupation status of the subsequent axle counting sections is required.
[0050] When the turnout status of the adjacent axle counting section meets the preset turnout conditions, determine whether to continue maintaining the rear screen based on the occupancy status. Specifically, this includes: if the adjacent axle counting section is not occupied, determine to continue maintaining the rear screen; if the adjacent axle counting section is occupied, obtain the train operation status of the adjacent axle counting section and determine whether to continue maintaining the rear screen based on the train operation status.
[0051] Preferably, the train operation status of the adjacent axle counting section is obtained, and a decision is made based on the train operation status to determine whether to continue maintaining the rear screening. This includes: detecting whether there is a communication train in the adjacent axle counting section; if there is no communication train, it is determined that the rear screening cannot continue and the initial rear screening needs to be restarted; if there is a communication train, the operation parameters of the communication train are further obtained, and a decision is made based on the operation parameters of the communication train to determine whether to continue maintaining the rear screening. If there is a hidden non-communication train behind the current train, posing a safety hazard, the rear screening of the current train cannot continue, the rear screening is marked as incomplete, the initial rear screening needs to be restarted, and the inspection process ends. When the adjacent axle counting section is occupied, but other trains are present, it is necessary to further determine whether the current train and the trains in the adjacent axle counting section are far apart or close together.
[0052] Further judgments include: obtaining the relative positional relationship between the communication train and the current train, wherein the relative positional relationship includes at least: a decreasing trend in relative distance (approaching relationship) and an increasing trend in relative distance (moving away relationship); when the relative positional relationship is a decreasing trend in relative distance, determining whether the communication train has completed the pre-screening; if so, determining to continue maintaining the post-screening; otherwise, determining that it cannot continue maintaining the post-screening and needs to repeat the initial post-screening; when the relative positional relationship is an increasing trend in relative distance, determining whether the communication train has completed the post-screening; if so, determining to continue maintaining the post-screening; otherwise, determining that it cannot continue maintaining the post-screening and needs to repeat the initial post-screening.
[0053] Obtaining the relative positional relationship between the communication train and the current train includes: obtaining the running direction and forward / backward relationship between the communication train and the current train; and determining the relative positional relationship between the communication train and the current train based on the running direction and forward / backward relationship.
[0054] First, based on the positions of the current train and other trains, determine whether the other trains are in front of or behind the current train. Using the current locomotive's position, search forward; if other trains are found, they are considered to be in front. Similarly, using the current locomotive's position, search backward; if other trains are found, they are considered to be behind. If no trains are found in either direction, the current train is not related to any other trains.
[0055] Secondly, based on the preceding and following relationships calculated in the previous step, the relative positions of other trains are determined by comprehensively considering the running directions of the current train and other trains: When the communication train and the current train are running in the same direction, their relative positions are determined based on the preceding and following relationships. Specifically, when the communication train is in front of the current train, the relative distance between them is determined to be increasing; when the communication train is behind the current train, the relative distance is determined to be decreasing. When the communication train and the current train are running in opposite directions, their relative positions are determined based on the preceding and following relationships. Specifically, when the communication train is in front of the current train, the relative distance between them is determined to be decreasing; when the communication train is behind the current train, the relative distance is determined to be increasing.
[0056] For example, if the current train is traveling upwards, and other trains are also traveling upwards, if other trains are detected ahead, they will move away from the current train; if other trains are detected behind, they will move closer to the current train. Figure 5As shown; if the current train is traveling upwards and other trains are traveling downwards, and other trains are detected ahead, they will approach the current train; if they are detected behind, they will move away from the current train. Similarly, if the current train is traveling downwards and other trains are traveling upwards, and other trains are detected ahead, they will approach the current train; if they are detected behind, they will move away from the current train. If the current train is traveling downwards and other trains are traveling downwards, and other trains are detected ahead, they will move away from the current train; if they are detected behind, they will approach the current train. In special cases, if no other trains are found forwards or backwards, regardless of the current train's direction or the directions of other trains, the current train has no connection with other trains, but an error flag must be reported, leading to safety processing and the other trains being considered non-communication trains.
[0057] 2) When the influencing factor is the running status of the first train behind the current train, determine whether the current train should continue to maintain the rear screening based on the influencing factor, including: determining whether the first train behind the current train has completed the front screening; if so, determine to continue to maintain the rear screening; otherwise, determine that the rear screening cannot be maintained and the initial rear screening needs to be repeated.
[0058] In the above implementation, the current train's location and direction are used to identify the current train's scenario. Depending on the scenario, the subsequent screening is checked and maintained based on the current train's condition and the status of the axle counting section behind it. Rapid screening of the current train significantly improves tracking, reduces operational intervals, and increases operational efficiency. When the current train is a CT (Traffic Control) train, based on its current status, the status of trains behind it, the status of the axle counting section behind it, and even its communication status with CI (Computer Interception), it can react quickly to different scenarios. Upon identifying a hazard source behind it, it re-performs the initial screening to maintain a safe tracking interval for following trains, ensuring the safety of the current train. Furthermore, by quickly identifying whether the current train is moving away from or approaching trains on the axle counting section behind it, the system determines whether the current train's subsequent screening can continue based on the screening of the preceding and following trains.
[0059] This embodiment also provides another method for retaining the rear screen of the train. Figure 6 This is a flowchart of a method for maintaining a train rear screen according to an embodiment of the present invention, as shown below. Figure 6 As shown, the process includes the following steps:
[0060] S601: Start;
[0061] S602: Determine whether the axle counting section where the current train is located belongs to the last train;
[0062] For example: When checking and maintaining the initial post-screening of a train, if the train that has completed post-screening is not the last car in the section where the rear of the train is located, it is necessary to determine whether the first train behind this train has completed the pre-screening. If the pre-screening has not been completed, there is a hidden non-communication train between the rear of the current train and the front of other trains behind it, which poses a safety hazard. That is, the post-screening of the train cannot continue to be maintained, the pre-screening is marked as incomplete, the initial post-screening is restarted, and the inspection process ends. When other trains behind have completed the pre-screening, it is considered that there is no train that can be hidden behind the current train, the post-screening of the current train can continue to be maintained, and the inspection process ends. When the train to be inspected is the last train in the section where the front of the train is located (according to the current train's running direction, the last car in the axle counting section where the rear of the train is located), the specific inspection process steps are as follows:
[0063] S603: Determine if there are four turnouts in the adjacent axle counting section behind the current train;
[0064] Based on the axle counting section where the current train's rear is located, search for the adjacent axle counting sections behind it, and then determine if there is a four-way switch. If there is a four-way switch, find the physical section where this switch is located, and then find all related axle counting sections based on the physical section. Finally, if any of the related axle counting sections is occupied, it is considered that there may be an occupation situation, which indicates a safety hazard in the physical section behind it. That is, the rear screening of the current train cannot continue, and the rear screening is marked as incomplete, requiring a restart of the initial rear screening. If all axle counting sections are in an empty state, it is considered that there is no hidden train behind it, the rear screening of the current train can continue, and the inspection process ends. When searching for the adjacent axle counting sections behind it, if there is no switch or the switch is in the correct or reversed position, further inspection of the occupation status of the rear axle counting sections is required.
[0065] S604: Determine whether the adjacent axle counting section behind the current train is free;
[0066] Based on the axle counting section where the rear of the train is currently located, find the adjacent axle counting section behind it and determine whether the adjacent axle counting section behind the train is free or occupied. If the axle counting section behind the train is free, the rear screen of the train can continue to be maintained, and the inspection process ends; if the axle counting section behind the train is occupied, it means that there is a train or a fault occupying it, and further judgment and inspection are required, then proceed to step S604.
[0067] S605: Determine whether other trains in the adjacent axle counting section behind the train to be inspected are far away or close;
[0068] When the axle counting section behind is occupied, it is necessary to check whether there is a train in that axle counting section. If there is no train, it is considered that there is a non-communication train in that axle counting section, and there is a hidden non-communication train behind the current train, which poses a safety hazard. That is, the rear screening of the current train cannot continue, the rear screening is marked as incomplete, and the initial rear screening needs to be restarted, and the inspection process ends. When there are other trains in the adjacent axle counting section behind, it is necessary to determine whether the other trains are far away or close to the train being inspected.
[0069] S606: Determine whether other trains have completed the pre-screening or post-screening;
[0070] When other trains behind approach the current train, it is necessary to determine whether the front of those other trains has completed the front screening. If it has, the rear screening of the current train can continue, and the inspection process ends. If it has not, there is a potential hidden non-communication train between the rear of the current train and the front of another train on the adjacent axle counting section, posing a safety hazard. Therefore, the rear screening of the current train cannot continue, the front screening is marked as incomplete, and the initial rear screening is restarted, ending the inspection process. When other trains behind move away from the current train, it is necessary to determine whether the rear of those other trains has completed the front screening. If it has, the rear screening of the train can continue, and the inspection process ends. If it has not, there is a potential hidden non-communication train between the rear of the current train and the rear of another train on the adjacent axle counting section, posing a safety hazard. Therefore, the rear screening of the train cannot continue, the rear screening is marked as incomplete, and the initial rear screening is restarted, ending the inspection process. Specifically, if when querying the adjacent axle counting section, it is found that the rear is the end of the track, it is assumed that there is no possibility of a hidden train behind the current train, and the rear screening of the train can continue.
[0071] S607: End.
[0072] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods according to the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention, 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 is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal device (which may be a mobile phone, computer, server, or network device, etc.) to execute the methods of the various embodiments of the present invention.
[0073] Example 2
[0074] This embodiment also provides a train control system that uses the train rear screen holding method as described in Embodiment 1 above to hold the train rear screen.
[0075] Through the above implementation method, after the train completes the initial post-screening, the train's positional relationship is obtained. Based on the train's positional relationship, the influencing factors affecting the train's post-screening are determined, and a decision on whether to maintain post-screening is made based on these factors. This method performs corresponding judgments for different scenarios, flexibly checking and maintaining post-screening without waiting for the train to clear the axle counting section, greatly improving the tracking time for the current train, reducing operating intervals, and increasing operational efficiency.
[0076] Example 3
[0077] Embodiments of the present invention also provide a storage medium storing a computer program, wherein the computer program is configured to execute the steps in any of the above method embodiments when running.
[0078] Optionally, in this embodiment, the storage medium may be configured to store a computer program for performing the following steps:
[0079] S1, after the current train completes the initial post-screening, obtain the current train's position information;
[0080] S2, determine the influencing factors that affect the current train's continued post-screening based on the current train's location information;
[0081] S3, determine whether the current train should continue to maintain the rear screening based on influencing factors.
[0082] Optionally, in this embodiment, the storage medium may include, but is not limited to, various media capable of storing computer programs, such as USB flash drives, read-only memory (ROM), random access memory (RAM), portable hard drives, magnetic disks, or optical disks.
[0083] Embodiments of the present invention also provide an electronic device, including a memory and a processor, wherein the memory stores a computer program and the processor is configured to run the computer program to perform the steps in any of the above method embodiments.
[0084] Optionally, the electronic device may further include a transmission device and an input / output device, wherein the transmission device is connected to the processor and the input / output device is connected to the processor.
[0085] Optionally, in this embodiment, the processor can be configured to perform the following steps via a computer program:
[0086] S1, after the current train completes the initial post-screening, obtain the current train's position information;
[0087] S2, determine the influencing factors that affect the current train's continued post-screening based on the current train's location information;
[0088] S3, determine whether the current train should continue to maintain the rear screening based on influencing factors.
[0089] Optionally, specific examples in this embodiment can refer to the examples described in the above embodiments and optional implementations, and will not be repeated here.
[0090] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.
[0091] In the above embodiments of this application, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.
[0092] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. The device embodiments described above are merely illustrative; for example, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual coupling, direct coupling, or communication connection may be through some interfaces; the indirect coupling or communication connection between units or modules may be electrical or other forms.
[0093] The units described as separate components may or may not be physically separate. 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 units can be selected to achieve the purpose of this embodiment according to actual needs.
[0094] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.
[0095] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or 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 described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as a USB flash drive, read-only memory (ROM), random access memory (RAM), portable hard drive, magnetic disk, or optical disk.
[0096] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.
Claims
1. A method for retaining a rear screen of a train, characterized in that, include: After the current train completes the initial screening, the position information of the current train is obtained; Based on the current train's location information, determine the factors that affect the current train's ability to continue with the subsequent screening. Based on the aforementioned influencing factors, determine whether the current train should continue to maintain the post-screening; The current train's location information includes at least: the current train is the last car in the axle counting section where its tail is located, or the current train is not the last car in the axle counting section where its tail is located; based on the current train's location information, factors affecting the current train's continued post-screening are determined, including: When the current train is the last car in the axle counting section where the rear of the current train is located, the influencing factor is determined to be the state of the adjacent axle counting section behind the current train; When the current train is not the last car in the axle counting section where the rear of the current train is located, the influencing factor is determined to be the operating status of the first train behind the current train; When the influencing factor is the state of the adjacent axle counting section behind the current train, determining whether the current train should continue to maintain the rear screening based on the influencing factor includes: Detect whether the turnout condition of the adjacent axle counting section behind meets the preset turnout conditions; If so, the occupancy status of the adjacent rear axle counting section is detected, and a decision is made based on the occupancy status whether to continue maintaining the rear screen. Otherwise, determine whether to continue using the rear screen based on the switch condition; Determining whether to continue with the subsequent screening based on the occupancy status includes: When the adjacent counting section behind it is not occupied, it is determined to continue to maintain the rear screen; When the adjacent axle counting section behind is occupied, the train operation status of the adjacent axle counting section behind is obtained, and it is determined whether to continue to maintain the rear screen based on the train operation status; Obtain the train operation status of the adjacent axle counting section behind, and determine whether to continue maintaining the rear screening based on the train operation status, including: Detect whether there is a communication train in the adjacent axle counting section behind it; If the communication train does not exist, it is determined that the post-screening cannot continue and the initial post-screening needs to be performed again. If the communication train exists, further obtain the operating parameters of the communication train, and determine whether to continue maintaining the post-screening based on the operating parameters of the communication train; Obtaining the operating parameters of the communication train, and determining whether to continue maintaining the subsequent screening based on the operating parameters of the communication train, includes: The relative positional relationship between the communication train and the current train is obtained, wherein the relative positional relationship includes at least: the relative distance is decreasing and the relative distance is increasing; When the relative position relationship is such that the relative distance is decreasing, it is determined whether the communication train has completed the pre-screening. If so, it is determined to continue the post-screening. Otherwise, it is determined that the post-screening cannot be continued and the initial post-screening needs to be repeated. When the relative position relationship shows that the relative distance is increasing, it is determined whether the communication train has completed the initial screening. If so, it is determined to continue maintaining the initial screening; otherwise, it is determined that the initial screening cannot be maintained and the initial screening needs to be repeated.
2. The method for retaining the rear screen of a train according to claim 1, characterized in that, Obtaining the current train's location information includes: Obtain data for all trains in the axle counting section where the rear of the current train is located; Based on the data of all trains, determine whether the current train is the last car in the axle counting section where the tail of the current train is located.
3. The method for maintaining the rear screen of a train according to claim 1, characterized in that, Detecting whether the turnout status of the adjacent axle counting section behind meets the preset turnout conditions includes: Detect whether there are four turnouts in the adjacent axle counting section behind, and whether the turnouts are in the correct or reverse position; If a turnout exists, or the turnout is in the correct position, or the turnout is in the reverse position, the turnout condition is determined to meet the preset turnout condition; otherwise, the turnout condition is determined not to meet the preset turnout condition.
4. The method for retaining the rear screen of a train according to claim 1, characterized in that, Determining whether to maintain the rear screen based on the switch condition includes: When there are four turnouts, locate the physical section where the turnout is located, and determine all associated axle counting sections based on the physical section. Determine whether any of the associated axle counting sections are occupied; If none of the associated axle counting sections are occupied, it is determined that the rear screen should continue to be maintained; otherwise, it is determined that the rear screen should not continue to be maintained and the initial rear screen needs to be performed again.
5. The method for retaining the rear screen of a train according to claim 1, characterized in that, When the influencing factor is the operating status of the first train following the current train, determining whether the current train should continue to maintain the rear screening based on the influencing factor includes: Determine whether the first train following the current train has completed the pre-screening; If yes, continue with the post-screening; otherwise, it is determined that post-screening cannot continue and the initial post-screening needs to be repeated.
6. A train control system, characterized in that, The method for maintaining the rear screen of the train as described in any one of claims 1 to 5 above is adopted.
7. An electronic device, characterized in that, It includes a processor, a communication interface, a memory, and a communication bus, wherein the processor, communication interface, and memory communicate with each other through the communication bus; wherein: Memory, used to store computer programs; A processor for executing the method steps of any one of claims 1 to 5 by running a program stored in memory.
8. A storage medium, characterized in that, The storage medium includes a stored program, wherein the program, when executed, performs the method steps of any one of claims 1 to 5.