Train master-slave system data exception processing method, system, device and storage medium

Abstract

This application provides a method, system, device, and storage medium for handling abnormal data in the primary and backup train systems, relating to the field of rail transit technology. The method includes obtaining the power-on status of the NVRAMs of the primary and backup train systems: if both systems are powered on simultaneously, and the NVRAM data is consistent, the train operates normally in a dual-system state; if the NVRAM data is inconsistent, the backup system crashes, the primary system does not perform train positioning, and travels at a preset speed limit; if only the primary system's NVRAM is powered on, the comparison of the primary and backup system NVRAM data is not performed, and the train operates normally in a single-system state. This application avoids the backup system crashing due to inconsistent outputs during primary and backup system operation, ensuring the safety of train operation.

Description

Technical Field

[0001] This application relates to the field of rail transit technology, specifically to a method, system, device, and storage medium for handling abnormal data in a train's main and backup systems. Background Technology

[0002] Current train onboard applications do not perform verification processing on the values ​​in the dual-system NVRAM (non-volatile random access memory), which may lead to output asynchrony and backup system failure due to NVRAM inconsistency. This mainly includes:

[0003] 1. In the existing technology, whether the train is running in single-system or dual-system mode, it does not affect manual wheel alignment or automatic wheel alignment. This will cause the NVRAM value to be updated when the single board is running. When the standby board is powered on, after the main and standby systems are synchronized, the standby system will crash due to inconsistent outputs after operation, and the driver will not be able to detect the reason.

[0004] 2. There is only one board for NVRAM writing, which lacks comparability. If the board writes incorrectly but the written data is within the wheel diameter value range, the motherboard cannot recognize it and can only run the car based on the written wheel diameter value. Manual wheel calibration or automatic wheel calibration can only be performed. The actual wheel diameter value can only be obtained after the wheel diameter value is updated, which poses a certain risk. Summary of the Invention

[0005] To address one of the aforementioned technical deficiencies, this application provides a method, device, and storage medium for handling abnormal data in a train main and backup system.

[0006] According to a first aspect of the embodiments of this application, a method for handling abnormal data in a train main / backup system is provided, the method comprising:

[0007] Obtain the NVRAM power-on status of the train's primary and backup systems:

[0008] If the NVRAMs of the primary and backup systems are powered on simultaneously

[0009] When the NVRAM data of the primary and backup systems are consistent, the train will operate normally in dual-system mode.

[0010] When the NVRAM data of the primary and backup systems are inconsistent, the backup system will crash, and the primary system will not perform train positioning and will run at the preset speed limit.

[0011] If the NVRAM of the primary system is powered on separately, the NVRAM data comparison between the primary and backup systems will not be performed, and the train will operate normally in a single-system state.

[0012] In an optional embodiment of this application, if the NVRAMs of the primary and backup systems are powered on simultaneously, and the NVRAM data of the primary and backup systems are inconsistent, the step of causing the backup system to crash, and the primary system not performing train positioning and traveling at a preset speed limit further includes:

[0013] Obtain the train's operating status:

[0014] If the train is at zero speed, the speed will be measured according to the maximum wheel diameter in the train's automatic protection system configuration data.

[0015] If the train is not at zero speed, the speed will be measured according to the existing wheel diameter value.

[0016] In an optional embodiment of this application, the step of not performing train positioning by the master system further includes:

[0017] If the train is a train with positioning, then the train positioning will not be performed by losing positioning.

[0018] If the train is a non-positioning train, then positioning will not be performed in the positioning-disabled mode.

[0019] In an optional embodiment of this application, if the NVRAMs of the primary and backup systems are powered on simultaneously, and the NVRAM data of the primary and backup systems are inconsistent, the step of causing the backup system to crash, and the primary system not performing train positioning and traveling at a preset speed limit further includes:

[0020] Turn off the train's operating status indicator lights.

[0021] In an optional embodiment of this application, if the NVRAMs of the primary and backup systems are powered on simultaneously, and the NVRAM data of the primary and backup systems are inconsistent, the step of causing the backup system to crash, and the primary system not performing train positioning and traveling at a preset speed limit further includes:

[0022] Alarm information is displayed on the train's onboard human-machine interface.

[0023] In an optional embodiment of this application, the method further includes:

[0024] Wheel diameter correction is performed when the train is running normally in dual-system mode;

[0025] If the wheel diameter correction is successful, the train will continue to operate normally.

[0026] If wheel diameter calibration fails, manually reprogram the NVRAM parameters or manually calibrate the wheel again.

[0027] In an optional embodiment of this application, the method further includes:

[0028] When the train is operating normally in single-system mode, the train is instructed not to perform wheel diameter correction.

[0029] According to a second aspect of the embodiments of this application, a train primary / backup system data anomaly processing system is provided. This system includes a primary / backup status acquisition module, a dual-system operation processing module, and a single-system operation processing module; wherein...

[0030] The primary / standby status acquisition module is used to acquire the power-on status of the train's primary and standby systems.

[0031] The dual-system operation processing module is used to ensure that when the main system and the backup system are powered on at the same time, the train operates normally in dual-system mode if the NVRAM data of the main system and the backup system are consistent; if the NVRAM data of the main system and the backup system are inconsistent, the backup system crashes, the main system does not perform train positioning and travels at the preset speed limit.

[0032] The single-system operation processing module is used to prevent the comparison of NVRAM data between the primary and backup systems when the primary system is powered on alone, and to allow the train to operate normally in single-system mode.

[0033] According to a third aspect of the embodiments of this application, a computer device is provided, including: a memory;

[0034] A processor; and a computer program; wherein the computer program is stored in a memory and configured to be executed by the processor to implement a train main / backup system data anomaly handling method as described in any of the first aspects of the embodiments of this application.

[0035] According to a fourth aspect of the embodiments of this application, a computer-readable storage medium is provided, on which a computer program is stored; the computer program is executed by a processor to implement a train main / backup system data anomaly handling method as described in any of the first aspects of the embodiments of this application.

[0036] The train main / backup system data anomaly handling method provided in the embodiments of this application has the following advantages:

[0037] Beneficial effects:

[0038] In existing technologies, in both cases where the primary and backup systems are powered on simultaneously but the data is inconsistent, and when only the primary system is powered on, the inconsistency in the output of the primary and backup systems can lead to the backup system crashing. This application proposes solutions to cause the backup system to crash and to prevent data comparison in these two cases, respectively. This can prevent the backup system from crashing without the knowledge of train staff, thus ensuring the safety of train operation. Attached Figure Description

[0039] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0040] Figure 1 A flowchart of a train main / backup system data anomaly handling method provided in an embodiment of this application;

[0041] Figure 2 This is a structural diagram of the train main and backup system data anomaly processing system provided in an embodiment of this application;

[0042] Figure 3 This is a schematic diagram of a computer device structure provided in one embodiment of this application. Detailed Implementation

[0043] To make the technical solutions and advantages of the embodiments of this application clearer, the exemplary embodiments of this application will be described in further detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not an exhaustive list of all embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.

[0044] In existing train main and backup system data processing, inconsistencies in data between the main and backup systems can easily lead to operational anomalies, making it difficult for drivers to identify the causes. Furthermore, train control systems often measure the rotational speed of the wheelsets using speed sensors mounted on them, and obtain the train's linear velocity from the wheel diameter value. Therefore, the accuracy of the wheel diameter value plays a crucial role in train speed measurement and positioning. Based on this, this application proposes a method for handling anomalies in train main and backup system data to solve the aforementioned problems.

[0045] Figure 1 For a flowchart of the train main / backup system data anomaly handling method provided in the embodiments of this application, please refer to [link / reference]. Figure 1 :

[0046] S1: Obtain the NVRAM power-on status of the main and backup train systems.

[0047] In practice, the primary and backup NVRAMs of the train may be powered on and run simultaneously, or the primary system may be powered on and run alone. This application's embodiments handle different scenarios of dual-system or single-system operation differently to address train operation anomalies caused by inconsistencies in the primary and backup NVRAM data.

[0048] S2: If the NVRAMs of the primary and backup systems are powered on simultaneously.

[0049] When the NVRAM data of the primary and backup systems are consistent, the train is allowed to operate normally in dual-system mode.

[0050] In practical implementation, when both systems are powered on simultaneously: after both the main and backup systems start, the ATP main and backup systems need to compare the wheel diameter value and failure count in the NVRAM. When the NVRAM values ​​are consistent, the main and backup systems will operate normally.

[0051] When the NVRAM data of the primary and backup systems are inconsistent, the backup system is shut down, and the primary system does not perform train positioning and runs at the preset speed limit.

[0052] When the primary and backup systems are powered on simultaneously but the data is inconsistent, the output of the primary and backup systems may be inconsistent, leading to a shutdown of the backup system. In this embodiment, the backup system is shut down, which avoids backup system failure without the knowledge of train staff, thus ensuring the safety of train operation.

[0053] In some embodiments of this application, when the NVRAM data of the primary and backup systems are inconsistent, the train's operating status is obtained: if the train is at zero speed, the speed is measured according to the maximum wheel diameter value in the train's automatic protection system configuration data; if the train is not at zero speed, the speed is measured according to the existing wheel diameter value. Based on this, embodiments of this application determine which wheel diameter value to use for speed measurement based on whether the train is at zero speed, so that when the NVRAM data of the primary and backup systems are inconsistent, the most accurate wheel diameter value can be used as the speed measurement benchmark.

[0054] In some embodiments of this application, when the NVRAM data of the primary and backup train systems are inconsistent, if the train is a positioning train, positioning is not performed in a "positioning loss" manner; if the train is a positioning-free train, positioning is not performed in a "positioning prohibition" manner. When the NVRAM data of the primary and backup train systems are inconsistent, wheel diameter measurement and speed measurement are both affected. In this case, positioning is prohibited, and the positioning prohibition method is determined according to different train attributes, which can maximize the efficiency of train anomaly handling.

[0055] In some embodiments of this application, when the NVRAM data of the primary and backup systems are inconsistent, the train's operating status indicator light is turned off. Simultaneously turning off the operating status indicator light of the primary system after the backup system fails provides multiple warnings to ensure that the driver and other staff can handle abnormalities promptly.

[0056] In some embodiments of this application, when the NVRAM data of the primary and backup systems are inconsistent, alarm information is displayed through the train control onboard human-machine interface. Based on this, multiple warnings can be used to ensure that the driver and other staff can handle abnormalities promptly.

[0057] In practice, when relevant values ​​in the NVRAM are inconsistent, the backup system crashes, the main train's status indicator lights turn off, and train positioning is prohibited. Speed ​​is measured according to the maximum wheel diameter value in the train's ATP (Automatic Train Protection) configuration data, and a voice and text alarm "Equipment Data Fault" is sent to the DMI (Train Control Machine Interface). Drivers are required to operate only in speed-limited mode, optionally with a speed limit of 20 km / h.

[0058] In practice, if the main system is at zero speed: for trains with positioning, it will be treated as lost positioning and the working status indicator light will be turned off; for trains without positioning, positioning will not be allowed and the working status indicator light will be turned off. Speed ​​will be measured according to the maximum wheel diameter value in the ATP configuration data, and a voice and text alarm "Equipment data fault" will be sent to the DMI. Drivers are required to operate only in speed-limited mode, optionally with a speed limit of 20 km / h.

[0059] In practice, if the main system is not at zero speed: for trains with positioning, it will be treated as lost positioning and the working status indicator light will be turned off; for trains without positioning, positioning will not be allowed and the working status indicator light will be turned off. Speed ​​will be measured according to the existing wheel diameter value, and a voice and text alarm "Equipment data fault" will be sent to the DMI. The driver is required to operate only in speed-limited mode, which can be optionally set to 20 km / h.

[0060] S3: If the NVRAM of the primary system is powered on separately, the NVRAM data comparison between the primary and backup systems will not be performed, and the train will run normally in single-system mode.

[0061] When the primary system is powered on alone, there may be a problem where the outputs of the primary and backup systems become inconsistent after the backup system is powered on, leading to a backup system failure. In this embodiment, data comparison is prevented, thus avoiding backup system failure without the knowledge of train staff and ensuring the safety of train operation.

[0062] In some embodiments of this application, when the train is operating normally in single-system mode, wheel diameter correction is not performed. This avoids wheel diameter correction in single-system mode, and prevents the problem of the backup system crashing due to inconsistent outputs after the primary and backup systems synchronize when the backup system is powered on, caused by the single-board updating NVRAM values ​​during operation.

[0063] In practice, the primary system is powered on independently: after power-on, the wheel diameters of the primary and backup NVRAMs are not compared, and normal operation begins directly. Furthermore, manual and automatic wheel calibration are not permitted in single-system operation. When running in single-system mode, the DMI interface displays the manual wheel calibration section, and manual input of wheel diameter values ​​is not allowed on the DMI.

[0064] In some embodiments of this application, wheel diameter correction is performed when the train is running normally in dual-train mode. If the wheel diameter correction is successful, the train continues to run normally. If the wheel diameter correction fails, the NVRAM parameters are manually reprogrammed or the wheel diameter is manually corrected again. When only one board's NVRAM is written, there is no comparability. If this board is written incorrectly but within the wheel diameter value range, the main board cannot recognize it and can only run the train based on the written wheel diameter value. However, according to the method of the embodiments of this application, if the wheel diameter correction fails, the NVRAM parameters are manually reprogrammed or the wheel diameter is manually corrected again. This allows the actual wheel diameter value to be obtained after manual wheel correction and automatic wheel diameter value update, which can avoid certain risks.

[0065] In practice, when the main and backup systems are running normally, after completing automatic or manual wheel diameter correction, it is necessary to ensure that both the main and backup systems have successfully written the new wheel diameter value into the NVRAM and that the read values ​​are consistent before the wheel correction is considered successful; otherwise, the wheel correction is considered a failure.

[0066] When equipment data malfunctions or wheel diameter calibration fails, it is necessary to manually reprogram the NVRAM parameters or manually calibrate the wheels, ensuring the dual-system is functioning normally. After reprogramming or manual calibration, the driver can only proceed with normal operation after ensuring the dual-system starts normally.

[0067] It should be understood that although the steps in the flowchart are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order constraint on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the diagram may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these sub-steps or stages is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the sub-steps or stages of other steps.

[0068] Please see Figure 2 One embodiment of this application provides a train primary / backup system data anomaly processing system, which includes a primary / backup status acquisition module 10, a dual-system operation processing module 20, and a single-system operation processing module 30; wherein,

[0069] The primary / backup status acquisition module 10 is used to acquire the power-on status of the train's primary and backup systems.

[0070] The dual-system operation processing module 20 is used to ensure that when the main system and the backup system are powered on at the same time, the train operates normally in dual-system mode when the NVRAM data of the main system and the backup system are consistent; when the NVRAM data of the main system and the backup system are inconsistent, the backup system crashes, the main system does not perform train positioning and travels at the preset speed limit.

[0071] In some embodiments of this application, when the NVRAM data of the primary system and the backup system are inconsistent, the train's operating status is obtained: if the train is at zero speed, the speed is measured according to the maximum wheel diameter value in the train's automatic protection system configuration data; if the train is not at zero speed, the speed is measured according to the existing wheel diameter value.

[0072] In some embodiments of this application, when the NVRAM data of the primary system and the backup system are inconsistent, if the train is a positioning train, the train positioning is not performed in the positioning loss mode; if the train is a positioning-free train, the train positioning is not performed in the positioning prohibition mode.

[0073] In some embodiments of this application, when the NVRAM data of the primary system and the backup system are inconsistent, the train's operating status indicator light is turned off.

[0074] In some embodiments of this application, when the NVRAM data of the primary system and the backup system are inconsistent, alarm information is displayed through the train control on-board equipment human-machine interface.

[0075] The single-system operation processing module 30 is used to prevent the comparison of NVRAM data between the main system and the backup system when the main system is powered on alone, and to allow the train to operate normally in single-system mode.

[0076] In some embodiments of this application, when the train is operating normally in a single-system configuration, wheel diameter correction is not performed.

[0077] In some embodiments of this application, wheel diameter correction is performed when the train is running normally in a dual-system configuration; if the wheel diameter correction is successful, the train continues to run normally; if the wheel diameter correction fails, the NVRAM parameters are manually burned again or the wheel diameter is manually corrected again.

[0078] Specific limitations regarding the aforementioned train primary and backup system data anomaly handling system can be found in the limitations of the train primary and backup system data anomaly handling method described above, and will not be repeated here. Each module in the aforementioned train primary and backup system data anomaly handling system can be implemented entirely or partially through software, hardware, or a combination thereof. These modules can be embedded in or independent of the processor in a computer device in hardware form, or stored in the memory of a computer device in software form, so that the processor can call and execute the corresponding operations of each module.

[0079] In one embodiment, a computer device is provided, the internal structure of which can be as follows: Figure 3 As shown. The computer device includes a processor, memory, network interface, and database connected via a system bus. The processor provides computing and control capabilities. The memory includes a non-volatile storage medium and internal memory. The non-volatile storage medium stores the operating system, computer programs, and the database. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage medium. The database stores data. The network interface communicates with external terminals via a network connection. When the computer program is executed by the processor, it implements the above-described train main / backup system data anomaly handling method. It includes: memory and a processor; the memory stores the computer program; and the processor executes the computer program to implement the above-described train main / backup system data anomaly handling method.

[0080] In one embodiment, a computer-readable storage medium is provided having a computer program stored thereon, which, when executed by a processor, can implement the above-described train main / backup system data anomaly handling method.

[0081] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code. The solutions in the embodiments of this application can be implemented in various computer languages, such as C, VHDL, Verilog, the object-oriented programming language Java, and the interpreted scripting language JavaScript.

[0082] This application is described with reference to flowchart illustrations and / or block diagrams of systems and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0083] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0084] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0085] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0086] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A method for handling abnormal data in a train main / backup system, characterized in that, include: Obtain the NVRAM power-on status of the train's primary and backup systems: If the NVRAMs of the primary and backup systems are powered on simultaneously... When the NVRAM data of the primary system and the backup system are consistent, the train is allowed to operate normally in dual-system mode; When the NVRAM data of the primary system and the backup system are inconsistent, the backup system is shut down, the primary system does not perform train positioning and travels at a preset speed limit; the operating status of the train is obtained: if the train is at zero speed, the speed is measured according to the maximum wheel diameter value in the train automatic protection system configuration data; if the train is not at zero speed, the speed is measured according to the existing wheel diameter value. If the NVRAM of the primary system is powered on separately, the NVRAM data comparison between the primary and backup systems will not be performed, and the train will operate normally in a single-system state. When the train is operating normally in a single-system configuration, the train is instructed not to perform wheel diameter correction.

2. The method for handling train main and backup system data anomalies according to claim 1, characterized in that, The steps where the main system does not perform train positioning also include: If the train is a train with positioning, then train positioning will not be performed in the manner of losing positioning. If the train is a non-positioning train, then positioning will not be performed in the position-disabled mode.

3. The method for handling train main and backup system data anomalies according to any one of claims 1-2, characterized in that, If the NVRAMs of the primary and backup systems are powered on simultaneously, and the NVRAM data of the primary and backup systems are inconsistent, the backup system is shut down, and the primary system does not perform train positioning and travels at a preset speed limit. The steps also include: Turn off the operating status indicator light of the train.

4. The method for handling train main and backup system data anomalies according to any one of claims 1-2, characterized in that, If the NVRAMs of the primary and backup systems are powered on simultaneously, and the NVRAM data of the primary and backup systems are inconsistent, the backup system is shut down, and the primary system does not perform train positioning and travels at a preset speed limit. The steps also include: Alarm information is displayed through the train's onboard control equipment human-machine interface.

5. The method for handling train main and backup system data anomalies according to any one of claims 1-4, characterized in that, The method further includes: Wheel diameter correction is performed when the train is operating normally in dual-system mode; If the wheel diameter correction is successful, the train will continue to operate normally. If wheel diameter calibration fails, manually reprogram the NVRAM parameters or manually calibrate the wheel again.

6. A train main / backup system data anomaly handling system, characterized in that, include: The system comprises a primary / standby status acquisition module, a dual-system operation processing module, and a single-system operation processing module; among which, The primary / standby status acquisition module is used to acquire the power-on status of the train's primary and standby systems. The dual-system operation processing module is used to, when the primary system and the backup system are powered on simultaneously, ensure that the train operates normally in dual-system mode if the NVRAM data of the primary system and the backup system are consistent; if the NVRAM data of the primary system and the backup system are inconsistent, cause the backup system to shut down, and the primary system does not perform train positioning and travels at a preset speed limit, thereby obtaining the train's operating status: if the train is at zero speed, the speed is measured according to the maximum wheel diameter value in the train's automatic protection system configuration data; if the train is not at zero speed, the speed is measured according to the existing wheel diameter value. The single-system operation processing module is used to prevent the NVRAM data comparison between the main system and the backup system from being performed when the main system is powered on alone, and to allow the train to operate normally in single-system mode, and to prevent the train from performing wheel diameter correction.

7. A computer device, characterized in that, include: Memory; processor; as well as Computer programs; The computer program is stored in the memory and configured to be executed by the processor to implement the train main / backup system data anomaly handling method as claimed in any one of claims 1-5.

8. A computer-readable storage medium, characterized in that, It stores a computer program; the computer program is executed by a processor to implement the train main and backup system data anomaly handling method as claimed in any one of claims 1-5.

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