Degradation train control method and device based on train safety positioning and medium

Abstract

The invention relates to a degraded train control method and device based on train safety positioning and a medium, the method enables a TACS system to open a permission signal for a degraded train under the condition of lack of secondary detection equipment, and according to train safety positioning calculated by a vehicle-mounted controller CC in real time and in combination with the safety positioning states of other trains, the degraded train control method is used for controlling the degraded train according to the train safety positioning calculated by the vehicle-mounted controller CC in real time. And calculating the safety guarantee that the train is the first train upstream of the annunciator, and controlling the target annunciator to light on based on the calculation result. Compared with the prior art, the method has the advantages of no need of manual intervention in the whole process, automatic completion by the system, high system availability and the like.

Description

Technical Field

[0001] The present invention relates to a rail transit signal system, and in particular to a downgraded train control method, equipment and medium based on train safety positioning. Background Art

[0002] The Train Autonomous Operation System (TACS system) based on vehicle-to-vehicle communication takes the on-board equipment as the control core, and the train autonomously calculates the movement authorization; after the TACS train is downgraded, the driver needs to control the train operation according to the display of the trackside signal. After the trackside signal opens the permission signal, due to the lack of secondary detection equipment such as axle counters, the TACS system cannot safely detect the downgraded train passing through the signal, and cannot close the permission signal opened for it in time. The permission signal may be misinterpreted by the driver of another downgraded train following behind, causing safety issues in the signal display upgrade.

[0003] After searching, Chinese patent publication number CN118560554A discloses a method for opening a time-limited permission signal of a TACS system based on beacon triggering. In this method, after the train backup positioning system BLS reads the beacon somewhere upstream of the signal, it triggers the trackside train controller WTC to apply to the trackside resource manager WRC for the train to open a permission signal with a certain time limit (such as 15s). After the time limit ends, the signal changes to a prohibition signal. This method effectively avoids the safety problem that the TACS system cannot detect the downgraded vehicle passing through the signal due to the lack of trackside secondary detection equipment, and cannot turn off the light in time, causing the display upgrade to the following tracking train. However, after the signal in this method lights up the permission signal, it can only maintain a limited time (such as 15s). The driver may not have time to drive the train through the signal before the permission signal of the signal will be turned off, forcing the driver to make an emergency stop, causing availability problems.

[0004] Meanwhile, Chinese patent publication number CN118665555A discloses a TACS system time-limited permission signal opening method with manual confirmation. When the driver fails to drive the train through the signal in time, the permission signal is lit again for the downgraded train through manual confirmation. However, the duration of the signal opening in this method is still limited, and manual intervention is required, which has poor usability.

[0005] Therefore, a method for opening a permission signal with a high degree of automation that can keep the permission signal lit for a downgraded train while avoiding causing an upgrade in the display to the following train is needed. Summary of the invention

[0006] The purpose of the present invention is to overcome the defects of the above-mentioned prior art and provide a downgraded train control method, equipment and medium based on train safety positioning.

[0007] The purpose of the present invention can be achieved by the following technical solutions:

[0008] According to a first aspect of the present invention, a downgraded train control method based on train safety positioning is provided, wherein the method enables the TACS system to open an enabling signal for the downgraded train in the absence of secondary detection equipment, and the control method calculates the safety guarantee of the train as the first train upstream of the signal based on the train safety positioning calculated in real time by the on-board controller CC and in combination with the safety positioning status of other trains, and controls the lighting of the target signal based on the calculation result.

[0009] As a preferred technical solution, the method specifically comprises the following steps:

[0010] Step S1, the onboard controller CC in the downgraded train calculates continuous safe positioning for the train, applies to the trackside resource manager WRC for releasing line resources, and issues a trackside signal lighting instruction. The driver controls the train to run safely according to the trackside signal display;

[0011] Step S2: After the driver drives the train into the approach section of the target signal, the onboard controller CC applies to the trackside resource manager WRC for the line resources between the target signal and the next same-direction signal;

[0012] Step S3, the onboard controller CC calculates the safety guarantee that the train is the first train upstream of the target signal based on the safety positioning status of the train and the safety positioning information of other trains, and calculates the safety guarantee that no other train occupies the space between the target signal and the next signal in the same direction;

[0013] Step S4, the onboard controller CC applies to the trackside resource manager WRC for opening the permission light of the target signal according to the calculation result of step S3;

[0014] Step S5, the trackside resource manager WRC lights up the permission light of the target signal according to the permission signal opening request of the onboard controller CC;

[0015] Step S6: The driver drives the train through the current signal after visually checking the permission light.

[0016] As a preferred technical solution, in step S1, the train cuts off ATP protection for some reason during operation and switches to RM mode, becoming a downgraded train.

[0017] As a preferred technical solution, in step S2, the onboard controller CC applies for line resources according to the operation task issued by the automatic train monitoring system ATS.

[0018] As a preferred technical solution, in step S3, the onboard controller CC establishes train-to-train communication with other trains on the entire line to obtain safety positioning information of other trains.

[0019] As a preferred technical solution, in step S4, the on-board controller CC obtains all required line resources from the trackside resource manager WRC, and applies to the trackside resource manager WRC for opening the permission light of the target signal, combined with the safety guarantee that no other trains occupy the signal protection section and the safety guarantee that this train is the first train upstream of the signal.

[0020] As a preferred technical solution, in step S5, the target controller OC is driven to light up the permission light of the target signal.

[0021] As a preferred technical solution, the method also includes step S7. When the train passes through the signal, the on-board controller CC can no longer calculate the safety guarantee of the first train upstream of the signal for the train. The on-board controller CC applies to the trackside resource manager WRC to turn off the permission light of the current signal, and the trackside resource manager WRC changes the prohibition light of the current signal.

[0022] According to a second aspect of the present invention, there is provided an electronic device, comprising a memory and a processor, wherein a computer program is stored in the memory, and the method described above is implemented when the processor executes the program.

[0023] According to a third aspect of the present invention, there is provided a computer-readable storage medium having a computer program stored thereon, wherein the program implements the method described above when executed by a processor.

[0024] Compared with the prior art, the present invention has the following advantages:

[0025] 1) The present invention can continuously light up the permission signal for the downgraded train before the downgraded train passes the signal, thereby avoiding turning off the light in advance and forcing the downgraded train to stop, which affects the availability;

[0026] 2) The present invention can turn off the permission signal in time after the downgraded train passes the signal machine, avoiding the safety problem of turning off the light too late and causing the signal display upgrade to the following tracking train;

[0027] 3) The present invention calculates the train safety positioning based on the real-time calculation of the onboard controller CC, combined with the safety positioning status of other trains, to calculate the safety guarantee of the train as the first train upstream of the signal, and uses this as a basis to control the lighting of the target signal. The whole process does not require manual intervention and is automatically completed by the system, with high system availability;

[0028] 4) The present invention enables the TACS system to open the permission signal for the downgraded train in the absence of secondary detection equipment, and can ensure that even if the permission signal is closed after the downgraded train passes the signal, it will avoid causing the signal display upgrade to other following trains, thereby ensuring the safety of the downgraded train operation in the TACS system. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is the TACS system architecture diagram;

[0030] Figure 2 This is a schematic diagram of a driver driving a train to approach a signal S1 under the authorization of a dispatcher according to an embodiment of the present invention;

[0031] Figure 3 This is a schematic diagram of the onboard controller CC calculating the safety guarantee for the train TU1 as the first train upstream of the signal according to an embodiment of the present invention;

[0032] Figure 4 This is a schematic diagram of the trackside resource manager WRC sending a command to the target controller OC to drive the signal S1 to light up the permission light in an embodiment of the present invention;

[0033] Figure 5 This is a schematic diagram of the trackside resource manager WRC sending an instruction to the target controller OC to drive the signal S1 to light up the prohibition light according to an embodiment of the present invention.

[0034] Figure 6 It is a specific flow chart of the method of the present invention. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0036] like Figure 6 As shown, a downgraded train control method based on train safety positioning specifically includes:

[0037] Step S1, when the train is running, if the ATP protection is cut off for some reason and the train is switched to RM mode, the onboard controller CC is still responsible for calculating the continuous safe positioning of the train, applying to the trackside resource manager WRC to release the line resources, issuing the signal lighting command, etc. The driver controls the safe operation of the train according to the trackside signal display.

[0038] Step S2: After the driver drives the train into the approach section of the target signal, the onboard controller CC starts to apply to the trackside resource manager WRC for the line resources between the target signal and the next same-direction signal according to the operation task issued by the automatic train monitoring system ATS.

[0039] Step S3, the onboard controller CC establishes train-to-train communication with other trains on the entire line, obtains the safety positioning information of other trains, calculates the safety guarantee that there are no other trains occupying the target signal to the next signal in the same direction, and combines the safety positioning status of this train, and the onboard controller CC calculates the safety guarantee for this train as the first train upstream of the signal.

[0040] Step S4, the onboard controller CC obtains all required line resources from the trackside resource manager WRC, and applies to the trackside resource manager WRC to open the permission light of the target signal, combining the safety guarantee that no other trains occupy the signal protection section and the safety guarantee that this train is the first train upstream of the signal.

[0041] Step S5: The trackside resource manager WRC drives the target controller OC to light up the permission light of the target signal according to the permission signal opening request of the onboard controller CC.

[0042] Step S6: The driver drives the train through the current signal after visually checking the permission light;

[0043] Step S7, when the train passes the signal, the onboard controller CC can no longer calculate the safety guarantee for the first train upstream of the signal. The onboard controller CC applies to the trackside resource manager WRC to turn off the permission light of the current signal. The trackside resource manager WRC drives the target controller OC to change the prohibition light of the current signal.

[0044] The downgraded train control method based on train safety positioning of the present invention can effectively solve the safety problem that the TACS system cannot safely detect that the downgraded train occupies the downstream section of the signal machine, cannot close the permission signal opened for the following train in time, and causes the display upgrade to the following train.

[0045] like Figure 1As shown in the figure, the TACS system mainly includes the automatic train monitoring system ATS, the trackside resource manager WRC and the train onboard controller CC, the onboard backup positioning system BLS, the trackside train controller WTC, and the target controller OC. Among them, the automatic train monitoring system ATS is responsible for supervising and controlling the operation of the train, and has the functions of tracking train operation, issuing train operation tasks, alarm and event reporting, and train operation adjustment. The trackside resource manager WRC has the functions of train sequence management, line resource allocation and recovery, signal and switch control, trackside equipment status collection and drive, etc. The onboard controller CC autonomously calculates and plans the driving path and planned operation curve according to the train operation task, applies for and releases resources from the trackside resource manager WRC, negotiates with other trains to use resources, actively controls the train, and realizes the train safety protection function and the train automatic driving function. The trackside train controller WTC is mainly responsible for managing and tracking faulty trains, taking over faulty trains to apply for and release resources. The target controller OC mainly realizes the status collection and drive of trackside equipment, including the drive and status collection of signal machines. The on-board backup positioning system BLS mainly provides the corresponding train ID and train location information to the trackside train controller based on the acquired transponder information to realize the location tracking of the downgraded train. The train operation mode of the TACS system includes TACS mode and manual mode. When the train is in a state of complete on-board safety protection, it is considered to be in TACS mode. When the train is not in a state of complete on-board safety protection and is manually involved in safety protection, it is considered to be in manual mode.

[0046] like Figure 2-Figure 5 As shown, the downgraded train control method based on train safety positioning is as follows:

[0047] 101) Train TU1 and train TU2 are downgraded due to a fault, and ATP is cut off to track and run between stations in manual mode. The onboard controller CC of train TU1 applies to the trackside resource manager WRC for line resources to signal S1 for train TU1. After all the required resources are obtained, the driver drives the train to approach signal S1 under the authorization of the dispatcher. Figure 2 As shown;

[0048] 102) After the driver drives train TU1 into the approach area of ​​signal S1, the onboard controller CC starts to apply for line resources from signal S1 to the next same-direction signal S2 from the trackside resource manager WRC for the train, establishes train-to-train communication with train TU2 to obtain the safety positioning information of train TU2, calculates the safety guarantee that there are no other trains occupying the space between signal S1 and signal S2, and combines the safety positioning status of train TU1. The onboard controller CC calculates the safety guarantee for train TU1 as the first train upstream of the signal. As shown in the attached figure Figure 3 As shown;

[0049] 103) After the onboard controller CC obtains all the line resources between signal S1 and signal S2 from the trackside resource manager WRC, combined with the safety guarantee that no other trains occupy the protection section of signal S1 and the safety guarantee that train TU1 is the first train upstream of signal S1, the onboard controller CC applies to the trackside resource manager WRC for the permission signal of signal S1. The trackside resource manager WRC sends a command to the target controller OC to drive the signal S1 permission light to light up. Figure 4 As shown;

[0050] 104) After the driver visually sees the permission signal, he drives train TU1 to approach and pass signal S1. When the driver's cab of train TU1 passes signal S1 with safe positioning, the onboard controller CC can no longer continue to calculate the safety guarantee for TU1 as the first train upstream of the signal. The onboard controller CC applies to the trackside resource manager WRC to turn off the S1 permission signal. The trackside resource manager WRC sends a command to the target controller OC to drive the signal S1 prohibition light to light up. As shown in the attached figure, Figure 5 shown.

[0051] The above is an introduction to the method embodiment. The following is a further explanation of the scheme of the present invention through electronic equipment and storage medium embodiments.

[0052] The embodiment of the present 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 computer program instructions loaded from a storage unit into a random access memory (RAM). In the RAM, various programs and data required for device operation can also be stored. The CPU, ROM, and RAM are connected to each other via a bus. An input / output (I / O) interface is also connected to the bus.

[0053] Multiple components in the device are connected to the I / O interface, including: input units, such as keyboards, mice, etc.; output units, such as various types of displays, speakers, etc.; storage units, such as disks, optical disks, etc.; and communication units, such as network cards, modems, wireless communication transceivers, etc. The communication unit allows the device to exchange information / data with other devices through computer networks such as the Internet and / or various telecommunication networks.

[0054] The processing unit performs the various methods and processes described above, such as methods S1 to S6. For example, in some embodiments, methods S1 to S6 may be implemented as a computer software program, which is 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 a ROM and / or a communication unit. When the computer program is loaded into the RAM and executed by the CPU, one or more steps of methods S1 to S6 described above may be performed. Alternatively, in other embodiments, the CPU may be configured to execute methods S1 to S6 in any other appropriate manner (e.g., by means of firmware).

[0055] The functions described above herein may be performed at least in part by one or more hardware logic components. For example, without limitation, exemplary types of hardware logic components that may be used include: field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), systems on chips (SOCs), complex programmable logic devices (CPLDs), and the like.

[0056] The program code for implementing the method of the present invention can be written in any combination of one or more programming languages. These program codes can be provided to a processor or controller of a general-purpose computer, a special-purpose computer or other programmable data processing device, so that the program code, when executed by the processor or controller, enables the functions / operations specified in the flow chart and / or block diagram to be implemented. The program code can be executed entirely on the machine, partially on the machine, partially on the machine as a stand-alone software package and partially on a remote machine, or entirely on a remote machine or server.

[0057] In the context of the present invention, a machine-readable medium may be a tangible medium that may contain or store a program for use by or in conjunction with an instruction execution system, device, or equipment. A machine-readable medium may be a machine-readable signal medium or a machine-readable storage medium. A machine-readable medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices, or equipment, or any suitable combination of the foregoing. A more specific example of a machine-readable storage medium may include an electrical connection based on one or more lines, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0058] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A downgraded train control method based on train safety positioning, which enables the TACS system to open an enabling signal for the downgraded train in the absence of secondary detection equipment, characterized in that: The control method calculates the safety guarantee of the train as the first train upstream of the signal according to the train safety positioning calculated in real time by the on-board controller CC and in combination with the safety positioning status of other trains, and controls the lighting of the target signal based on the calculation result.

2. A downgraded train control method based on train safety positioning according to claim 1, characterized in that: The method specifically comprises the following steps: Step S1, the onboard controller CC in the downgraded train calculates continuous safe positioning for the train, applies to the trackside resource manager WRC for releasing line resources, and issues a trackside signal lighting instruction. The driver controls the train to run safely according to the trackside signal display; Step S2: After the driver drives the train into the approach section of the target signal, the onboard controller CC applies to the trackside resource manager WRC for the line resources between the target signal and the next same-direction signal; Step S3, the onboard controller CC calculates the safety guarantee that the train is the first train upstream of the target signal based on the safety positioning status of the train and the safety positioning information of other trains, and calculates the safety guarantee that no other train occupies the space between the target signal and the next signal in the same direction; Step S4, the onboard controller CC applies to the trackside resource manager WRC for opening the permission light of the target signal according to the calculation result of step S3; Step S5, the trackside resource manager WRC lights up the permission light of the target signal according to the permission signal opening request of the onboard controller CC; Step S6: The driver drives the train through the current signal after visually checking the permission light.

3. A downgraded train control method based on train safety positioning according to claim 2, characterized in that: In step S1, the train switches to RM mode due to the removal of ATP protection during operation, becoming a downgraded train.

4. A degraded train control method based on train safety positioning according to claim 2, characterized in that: In step S2, the onboard controller CC applies for line resources according to the operation task issued by the automatic train monitoring system ATS.

5. The downgraded train control method based on train safety positioning according to claim 2, characterized in that: In step S3, the onboard controller CC establishes inter-train communication with other trains on the entire line to obtain safety positioning information of other trains.

6. A degraded train control method based on train safety positioning according to claim 2, characterized in that: In step S4, the onboard controller CC obtains all required line resources from the trackside resource manager WRC, and applies to the trackside resource manager WRC for opening the permission light of the target signal, combining the safety guarantee that no other trains occupy the signal protection section and the safety guarantee that this train is the first train upstream of the signal.

7. A degraded train control method based on train safety positioning according to claim 2, characterized in that: In step S5, the target controller OC is driven to light up the permission light of the target signal.

8. A degraded train control method based on train safety positioning according to claim 2, characterized in that: The method also includes step S7. When the train passes the signal, the on-board controller CC can no longer calculate the safety guarantee for the first train upstream of the signal. The on-board controller CC applies to the trackside resource manager WRC to turn off the permission light of the current signal, and the trackside resource manager WRC changes the prohibition light of the current signal.

9. An electronic device comprising a memory and a processor, wherein a computer program is stored in the memory, wherein: When the processor executes the program, the method according to any one of claims 1 to 8 is implemented.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the method according to any one of claims 1 to 8 is implemented.

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