Method, device, equipment and medium for obtaining train position based on RM

Abstract

The embodiments of the present invention provide a method, device, equipment and medium for obtaining the position of a train based on RM. The method includes: obtaining the path information of the target train within the maximum safe distance when the onboard controller VOBC cannot obtain the train control information of the target train; sending a special control message to the target train, wherein the special control message includes path information, and the path information is used to enable VOBC to determine the position information of the target train. The method, device, equipment and medium for obtaining the position of a train based on RM provided by the embodiments of the present invention can enable the train to determine the position information of the train in the restricted manual driving mode of the fully automatic operation system, thereby preventing the loss of the train's position.

Description

Technical Field

[0001] The present invention relates to the field of rail transit technology, and in particular to a method, device, equipment and medium for preventing a train from losing its position. Background Art

[0002] The Fully Automatic Operation (FAO) system is a new generation of urban rail transit system that realizes the automation of the entire train operation process based on computer, communication, control and system integration technologies. The position of the train is the core of the operation of the signal system. The accuracy and real-time performance of the train position can improve the operating efficiency of the signal system.

[0003] Currently, the path information is included in the train control information. The vehicle on-board controller (VOBC) of the train obtains the path information through the train control information and then determines the position of the train.

[0004] However, when the ground equipment sends a special control message to the train's VOBC, due to the requirements of the interface protocol, the special control message data packet and the train control information data packet cannot exist in the same data packet at the same time. As a result, when the ground equipment sends a special message to the train's VOBC, the train's VOBC cannot obtain the train control information, and thus cannot obtain the path information, which means that the VOBC cannot determine the train's location, causing the train's location to be lost. Summary of the invention

[0005] The embodiments of the present invention provide a method, apparatus, device and medium for obtaining the position of a train based on a restricted manual driving mode (RM), which can enable the train to still determine the position information of the train in the restricted manual driving mode of a fully automatic operation system and prevent the train's position from being lost.

[0006] According to one aspect of an embodiment of the present invention, a method for obtaining a train position based on RM is provided, the method comprising:

[0007] When VOBC cannot obtain the train control information of the target train, obtain the path information of the target train within the maximum safe distance;

[0008] A special control message is sent to the target train, wherein the special control message includes path information, and the path information is used to enable the VOBC to determine the location information of the target train.

[0009] By adding path information to special control messages, the train's location information can still be determined in the restricted manual driving mode of the fully automatic operation system, preventing the train's location from being lost.

[0010] In some implementations of the first aspect, obtaining path information of a target train within a maximum safety distance includes:

[0011] Calculate the maximum safety distance of the target train according to the maximum first safety extension distance in front of the target train, the body occupation distance of the target train and the minimum second safety extension distance behind the target train;

[0012] Based on the maximum safety distance, obtain the path information within the maximum safety distance.

[0013] By calculating the maximum safety distance of the target train based on the maximum first safety extension distance in front of the target train, the body occupancy distance of the target train and the minimum second safety extension distance behind the target train, and obtaining the path information within the maximum safety distance, it can be ensured that the train will not lose its position when it stops at the farthest switch.

[0014] In some implementations of the first aspect, the first safety extension distance includes a travel distance of the target train within a preset communication delay time.

[0015] In some implementations of the first aspect, the second safety extension distance includes an allowable retreat distance of the target train and a tracking safety protection distance of the target train.

[0016] In some implementations of the first aspect, the path information includes at least: the number of turnouts, the turnout status, and the turnout identity document (ID).

[0017] In a second aspect, a device for obtaining a train position based on RM is provided, the device comprising:

[0018] an acquisition module, configured to acquire path information of the target train within a maximum safety distance when the onboard controller VOBC cannot acquire train control information of the target train;

[0019] The sending module is configured to send a special control message to a target train, wherein the special control message includes path information, and the path information is used to enable the VOBC to determine the location information of the target train.

[0020] In some implementations of the second aspect, the acquisition module includes:

[0021] a calculation module configured to calculate a maximum safety distance of the target train according to a maximum first safety extension distance in front of the target train, a body occupancy distance of the target train, and a minimum second safety extension distance behind the target train;

[0022] The acquisition submodule is configured to acquire path branch information within the maximum safety distance based on the maximum safety distance.

[0023] By using equipment based on RM to obtain the train position and adding path information to special messages, the train's position information can still be determined in the restricted manual driving mode of the fully automatic operation system, thus preventing the train's position from being lost.

[0024] In some implementations of the second aspect, the second safety extension distance includes an allowable retreat distance of the target train and a tracking safety protection distance of the target train.

[0025] In a third aspect, a device for obtaining a train position based on RM is provided, the device comprising:

[0026] a processor and a memory storing computer program instructions;

[0027] When the processor executes the computer program instructions, the method for obtaining the train position based on RM as provided in the above-mentioned embodiment of the present invention is implemented.

[0028] In a fourth aspect, a computer storage medium is provided, on which computer program instructions are stored. When the computer program instructions are executed by a processor, the method for obtaining a train position based on RM as provided in the above-mentioned embodiment of the present invention is implemented.

[0029] The method, device, equipment and medium for obtaining the train position based on RM provided in the embodiments of the present invention add path information in a special control message, so that the train position information can still be determined in the restricted manual driving mode of the fully automatic operation system, thereby preventing the train position from being lost. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the following briefly introduces the drawings required for use in the embodiment of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0031] Figure 1 A flow chart showing a method for acquiring a train position based on RM according to an embodiment of the present invention;

[0032] Figure 2 A schematic diagram showing the structure of a device for acquiring a train position based on RM according to an embodiment of the present invention;

[0033] Figure 3 A structural diagram showing an exemplary hardware architecture of an embodiment of the present invention. DETAILED DESCRIPTION

[0034] The features and exemplary embodiments of various aspects of the present invention will be described in detail below. In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and Examples. It should be understood that the specific embodiments described herein are only configured to explain the present invention and are not configured to limit the present invention. For those skilled in the art, the present invention can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present invention by illustrating examples of the present invention.

[0035] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0036] The train's location information is the core of the signal system operation, so it is particularly important to ensure that the train's location is not lost. During normal operation, the train obtains information on the line through "train control information". However, when the train's operation level is a communication-based train control system (CBTC), the ground equipment determines that the train does not meet the calculation movement authorization conditions. When the train brakes urgently, it will receive a "special control message".

[0037] However, due to the requirements of the interface specification, the "special control message" data packet and the "train control information" data packet cannot be sent to the train at the same time. Therefore, when the train receives the "special control message", VOBC will be unable to obtain information on the line and unable to determine the train's location, causing the train's location to be lost.

[0038] Therefore, an embodiment of the present invention provides a method, device, equipment and medium for obtaining train position based on RM, which can add path information in special control messages, so that the train's position information can still be determined in the restricted manual driving mode of the fully automatic operation system, thereby preventing the train's position from being lost.

[0039] The following describes the method, device, apparatus and medium for obtaining train position based on RM according to the embodiments of the present invention in conjunction with the accompanying drawings. It should be noted that these embodiments are not intended to limit the scope of the present invention.

[0040] Below through Figure 1 A method for acquiring a train position based on RM according to an embodiment of the present invention is described in detail.

[0041] In order to better understand the technical solution of the present invention, Figure 1 A method for obtaining a train position based on RM according to an embodiment of the present invention is described in detail. Figure 1 It is a flowchart showing a method for acquiring a train position based on RM according to an embodiment of the present invention.

[0042] like Figure 1 As shown, the method for obtaining the train position based on RM in the embodiment of the present invention includes the following steps:

[0043] S101, when VOBC cannot obtain the train control information of the target train, obtain the path information of the target train within the maximum safety distance.

[0044] In one embodiment of the present invention, the situation where VOBC cannot obtain the "train control information" of the target train may be: if the current operating level of the target train is non-CBTC level and the ground equipment needs to maintain a link with the train, VOBC cannot obtain the "train control information" of the target train, but receives the "special control message" of the target train.

[0045] In another case, if the current operating level of the target train is the CBTC level, and the ground equipment determines that the target train cannot calculate the movement authorization, when the target train performs emergency braking, VOBC cannot obtain the "train control information" of the target train, but receives the "special control message" of the target train.

[0046] When VOBC cannot obtain the "train control information" of the target train, the zone controller (ZC) will calculate the maximum safety distance of the target train based on the maximum first safety extension distance in front of the target train, the body occupancy distance of the target train, and the minimum second safety extension distance behind the target train. For example, the sum of the maximum first safety extension distance in front of the target train, the body occupancy distance of the target train, and the minimum second safety extension distance behind the target train is taken as the maximum safety distance.

[0047] In one embodiment of the present invention, the first safety extension distance may be the running distance of the target train at the maximum speed limit during the communication delay period. For example, the first safety extension distance may be calculated by expression (1).

[0048] S=V max ×T+0.5×a×T×T (1)

[0049] Where S represents the first safety extension distance, V max represents the maximum speed limit, T represents the communication delay time, and a represents the acceleration of the target train.

[0050] The second safety extension distance may be the sum of the allowable retreat distance of the target train and the tracking safety protection distance of the target train, wherein the allowable retreat distance and the tracking safety protection distance may be calculated according to the engineering line performance parameters.

[0051] Next, ZC will obtain the path information within the maximum safety distance. The path information may be as shown in Table 1.

[0052] Table 1

[0053]

[0054] S102, sending a special control message to the target train.

[0055] The special control message includes path information, and the path information is used to enable VOBC to determine the location information of the target train.

[0056] In one embodiment of the present invention, before sending a special control message to the target train, the ZC will add the acquired path information of the target train within the maximum safety distance to the special control message, and then send the special control message carrying the path information to the target train. After receiving the special control message, the VOBC of the target train can determine the location information of the target train based on the path information in the special control message.

[0057] In an embodiment of the present invention, by calculating the maximum safety distance of the target train based on the maximum first safety extension distance in front of the target train, the body occupancy distance of the target train and the minimum second safety extension distance behind the target train, and obtaining the turnout information path information within the maximum safety distance, it can be ensured that the train will not lose its position when it stops at the farthest turnout, so that the train's position information can still be determined in the restricted manual driving mode of the fully automatic operation system to prevent the train's position from being lost.

[0058] Below through Figure 2 A device for acquiring a train position based on RM according to an embodiment of the present invention is introduced in detail. The device for acquiring a train position based on RM corresponds to a method for acquiring a train position based on RM.

[0059] Figure 2A schematic structural diagram of a device for acquiring train position based on RM according to an embodiment of the present invention is shown.

[0060] like Figure 2 As shown, the device for obtaining the train position based on RM includes:

[0061] The acquisition module 210 is configured to acquire the path information of the target train within the maximum safety distance when the onboard controller VOBC cannot acquire the train control information of the target train.

[0062] The sending module 220 is configured to send a special control message to the target train, wherein the special control message includes path information, and the path information is used to enable the VOBC to determine the location information of the target train.

[0063] In an embodiment of the present invention, a device for acquiring the train position based on RM can be used to add path information to a special control message, so that the train's position information can still be determined in the restricted manual driving mode of the fully automatic operation system, thereby preventing the train's position from being lost.

[0064] In one embodiment of the present invention, the acquisition module 210 further includes:

[0065] The calculation module is configured to calculate the maximum safety distance of the target train according to the maximum first safety extension distance in front of the target train, the body occupancy distance of the target train and the minimum second safety extension distance behind the target train.

[0066] In one embodiment of the present invention, the first safety extension distance includes a travel distance of the target train within a preset communication delay time.

[0067] In one embodiment of the present invention, the second safety extension distance is the allowable retreat distance of the target train and the tracking safety protection distance of the target train.

[0068] The acquisition submodule is configured to acquire path information within the maximum safety distance based on the maximum safety distance.

[0069] In one embodiment of the present invention, the path information includes at least: turnout information, turnout status and turnout ID.

[0070] In an embodiment of the present invention, a calculation module calculates the maximum safety distance of the target train based on the maximum first safety extension distance in front of the target train, the body occupancy distance of the target train and the minimum second safety extension distance behind the target train, thereby ensuring that the train will not lose its position when it stops at the farthest switch.

[0071] Each module of the device for obtaining train position based on RM provided in the embodiment of the present invention has the following functions: Figure 1The functions of the method / steps for obtaining the train position based on RM in the embodiment shown in the figure can achieve the same Figure 1 For the sake of brevity, the corresponding technical effects of the illustrated embodiments are not described in detail here.

[0072] Figure 3 A structural diagram showing an exemplary hardware architecture of a computing device capable of implementing the method and apparatus for acquiring a train position according to an embodiment of the present invention.

[0073] like Figure 3 As shown, the computing device 300 includes an input device 301, an input interface 302, a central processing unit 303, a memory 304, an output interface 305, and an output device 306. The input interface 302, the central processing unit 303, the memory 304, and the output interface 305 are connected to each other via a bus 310, and the input device 301 and the output device 306 are connected to the bus 310 via the input interface 302 and the output interface 305, respectively, and are further connected to other components of the computing device 300.

[0074] Specifically, the input device 301 receives input information from the outside and transmits the input information to the central processing unit 303 through the input interface 302; the central processing unit 303 processes the input information based on the computer executable instructions stored in the memory 304 to generate output information, temporarily or permanently stores the output information in the memory 304, and then transmits the output information to the output device 306 through the output interface 305; the output device 306 outputs the output information to the outside of the computing device 300 for user use.

[0075] That is to say, Figure 3 The computing device shown can also be used to implement a device for acquiring a train position based on RM. The device for acquiring a train position based on RM may include: a memory storing computer executable instructions; and a processor. When executing the computer executable instructions, the processor may implement the combination of Figure 1 and Figure 2 The method and device for obtaining train position based on RM are described.

[0076] An embodiment of the present invention further provides a computer-readable storage medium having computer program instructions stored thereon; when the computer program instructions are executed by a processor, the method for obtaining a train position based on RM provided in an embodiment of the present invention is implemented.

[0077] It should be clear that the present invention is not limited to the specific configuration and processing described above and shown in the figure. For the sake of simplicity, a detailed description of the known method is omitted here. In the above embodiment, several specific steps are described and shown as examples. However, the method process of the present invention is not limited to the specific steps described and shown, and those skilled in the art can make various changes, modifications and additions, or change the order between the steps after understanding the spirit of the present invention. The functional blocks shown in the structural block diagram described above can be implemented as hardware, software, firmware or a combination thereof. When implemented in hardware, it can be, for example, an electronic circuit, an application-specific integrated circuit (ASIC), appropriate firmware, plug-in, function card, etc. When implemented in software, the elements of the present invention are programs or code segments used to perform the required tasks. The program or code segment can be stored in a machine-readable medium, or transmitted on a transmission medium or communication link via a data signal carried in a carrier. "Machine-readable medium" can include any medium capable of storing or transmitting information. Examples of machine-readable media include electronic circuits, semiconductor memory devices, ROMs, flash memories, erasable ROMs (EROMs), floppy disks, CD-ROMs, optical disks, hard disks, optical fiber media, radio frequency (RF) links, and the like. The code segments may be downloaded via a computer network such as the Internet, an intranet, or the like.

[0078] The present invention may be implemented in other specific forms without departing from its spirit and essential features. For example, the algorithms described in a specific embodiment may be modified, and the device architecture does not depart from the basic spirit of the present invention. Therefore, the current embodiments are considered to be illustrative and not restrictive in all aspects, the scope of the present invention is defined by the appended claims rather than the above description, and all changes that fall within the meaning and equivalent scope of the claims are thus included in the scope of the present invention.

Claims

1. A method for obtaining train position based on RM, characterized in that: include: When the onboard controller VOBC cannot obtain the train control information of the target train, obtain the path information of the target train within the maximum safe distance; Sending a special control message to the target train, wherein the special control message includes the path information, and the path information is used to enable the VOBC to determine the location information of the target train; Characterized in that the step of obtaining the path information of the target train within the maximum safety distance includes: Calculating the maximum safety distance of the target train according to the maximum first safety extension distance in front of the target train, the body occupancy distance of the target train and the minimum second safety extension distance behind the target train; Based on the maximum safety distance, obtaining path information within the maximum safety distance; The first safety extension distance includes the travel distance of the target train during the preset communication delay time; The first safety extension distance is calculated by the following formula: S=Vmax×T+0.5×a×T×T, where S represents the first safety extension distance, Vmax represents the maximum speed limit, T represents the communication delay time, and a represents the acceleration of the target train; The second safety extension distance includes the allowable retreat distance of the target train and the tracking safety protection distance of the target train.

2. The method for obtaining train position based on RM according to claim 1, characterized in that: The path information at least includes: the number of turnouts, the turnout status and the turnout identification number ID.

3. A device for obtaining train position based on RM, characterized in that: include: an acquisition module, configured to acquire path information of the target train within a maximum safety distance when the onboard controller VOBC cannot acquire train control information of the target train; A sending module, configured to send a special control message to the target train, wherein the special control message includes the path information, and the path information is used to enable the VOBC to determine the location information of the target train; The acquisition module comprises: A calculation module is configured to calculate the maximum safety distance of the target train according to the maximum first safety extension distance in front of the target train, the body occupancy distance of the target train and the minimum second safety extension distance behind the target train; wherein the first safety extension distance includes the travel distance of the target train during a preset communication delay time; the first safety extension distance is calculated by the following formula: S=Vmax×T+0.5×a×T×T, wherein S represents the first safety extension distance, Vmax represents the maximum speed limit, T represents the communication delay time, and a represents the acceleration of the target train; the second safety extension distance includes the allowable retreat distance of the target train and the tracking safety protection distance of the target train; The acquisition submodule is configured to acquire path information within the maximum safety distance based on the maximum safety distance.

4. A device for obtaining train position based on RM, characterized in that: The device comprises: a processor and a memory storing computer program instructions; When the processor executes the computer program instructions, the method for obtaining train position based on RM as described in any one of claims 1-2 is implemented.

5. A computer storage medium, characterized in that: The computer storage medium stores computer program instructions, which, when executed by a processor, implement the method for acquiring train position based on RM as described in any one of claims 1-2.

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