Train positioning method and device and storage medium

Abstract

The invention provides a train positioning method and device and a storage medium. The method comprises the following steps: in the running process of a train, continuously obtaining asymmetric positioning signals sent by a ground positioner: based on the continuously obtained asymmetric positioning signals, generating an intensity change trend of the positioning signals; performing feature matching on the basis of the intensity change trend and a pre-stored signal change trend with a label in a database to obtain a successfully matched signal change trend; and determining the running direction of the train based on the label carried by the successfully matched signal change trend. According to the technical scheme provided by the embodiment of the invention, the positioning of the train can be realized only by simply adjusting the antenna of single positioner equipment without searching historical position information and possible paths of an electronic map and without modifying and additionally installing the positioner equipment, so that the cost is reduced, and the positioning time is shortened.

Description

Technical Field

[0001] The present invention relates to the field of rail transportation, and in particular to a train positioning method, device and storage medium. Background Art

[0002] After the train's onboard subsystem is restarted, it will be unable to maintain its positioning status. The train will be downgraded to a non-reporting train, which will affect the operating efficiency of the relevant routes. The train will need to wait until it passes two locators in manual driving mode before it can be upgraded back to a reporting train. Summary of the Invention

[0003] To achieve the above-mentioned objectives, the present invention proposes a train positioning method, device and storage medium, which can be used to locate the train without searching the historical location information and possible paths of the electronic map, and without modifying or adding to the locator equipment. Only a simple adjustment of the antenna of a single locator device is required to achieve train positioning, thereby reducing costs and shortening positioning time.

[0004] A train positioning method proposed in an embodiment of the present invention includes: acquiring an asymmetric positioning signal: continuously acquiring an asymmetric positioning signal transmitted by a ground locator while the train is traveling; generating a positioning signal change trend: generating a positioning signal intensity change trend based on the continuously acquired asymmetric positioning signal; matching the change trend: performing feature matching based on the intensity change trend with a signal change trend with a tag in a pre-stored database to obtain a successfully matched signal change trend; and determining the train's direction of travel: determining the train's direction of travel based on the tag attached to the successfully matched signal change trend. This method eliminates the need to search for historical location information and possible paths on electronic maps, and eliminates the need to modify or add to the locator equipment. Train positioning can be achieved by simply adjusting the antenna of a single locator device, thereby reducing costs and shortening positioning time.

[0005] A train positioning device proposed in an embodiment of the present invention includes: an asymmetric positioning signal acquisition module configured to continuously acquire asymmetric positioning signals sent by a ground locator during train travel; a positioning signal change trend generation module configured to generate a positioning signal intensity change trend based on the continuously acquired asymmetric positioning signal; a change trend matching module configured to perform feature matching based on the intensity change trend with signal change trends with tags in a pre-stored database to obtain a successfully matched signal change trend; and a train running direction determination module configured to determine the train running direction based on the tags attached to the successfully matched signal change trends. This eliminates the need to search for historical location information and possible paths on electronic maps, and eliminates the need to modify or add to the locator equipment. Train positioning can be achieved by simply adjusting the antenna of a single locator device, thereby reducing costs and shortening positioning time.

[0006] An electronic device proposed in an embodiment of the present invention includes: at least one processor; and a memory coupled to the at least one processor, wherein the memory is used to store instructions, and when the instructions are executed by the at least one processor, the processor executes the method described above.

[0007] An embodiment of the present invention provides a computer-readable storage medium on which computer instructions are stored. When the computer instructions are executed, the method described in any of the above embodiments is executed.

[0008] A computer program product provided in an embodiment of the present invention includes a computer program. When the computer program is executed by a processor, the method described in any one of the above embodiments is implemented. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] The following drawings are only intended to illustrate and explain the present invention, and do not limit the scope of the present invention.

[0010] Figure 1 FIG. 1 is a flow chart of a train positioning method 100 according to an embodiment of the present invention.

[0011] Figure 2 FIG. 2 is a structural diagram of a train positioning device 200 according to an embodiment of the present invention.

[0012] Figure 3 is a schematic diagram of an electronic device 300 according to an embodiment of the present invention.

[0013] Figure 4 3 is a schematic diagram of the corresponding relationship between the train running direction and the intensity change trend of the positioning signal according to an embodiment of the present invention.

[0014] The following are the descriptions of the reference numerals:

[0015]

[0016] DETAILED DESCRIPTION

[0017] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, specific embodiments of the present invention are now described with reference to the accompanying drawings.

[0018] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0019] As used in this application and the claims, unless the context clearly indicates otherwise, the words "a," "an," "an," and / or "the" are not intended to refer to the singular but may include the plural. Generally speaking, the terms "comprises" and "include" only indicate the inclusion of the steps and elements specifically identified, and these steps and elements do not constitute an exclusive list. A method or apparatus may also include other steps or elements.

[0020] Existing solutions include downgrading the train to a non-reporting train, requiring it to pass two locators in manual driving mode before being upgraded back to a reporting train. Alternatively, the train reads the locator signal to determine its current location and then queries the train's travel information from past locations to the current one. The database is then searched for all possible paths from the past to the current location. Based on the search direction corresponding to each path, the unique travel direction represented by each path is determined as the train's current travel direction, thereby determining the train's travel direction.

[0021] Therefore, embodiments of the present invention provide a more effective train positioning method, device, and storage medium.

[0022] Figure 1 FIG. 1 is a flow chart of a train positioning method 100 according to an embodiment of the present invention. Figure 1 As shown, the method 100 may include:

[0023] Step S101: While the train is moving, continuously acquire an asymmetric positioning signal sent by a ground locator.

[0024] In one embodiment, the asymmetric positioning signal is sent by the ground locator to the train, and the asymmetric positioning signal is left-right asymmetric relative to the running track where the train is located.

[0025] Step S102: generating a positioning signal strength variation trend based on the continuously acquired asymmetric positioning signal.

[0026] In one embodiment, the intensity variation trend is a temporal variation trend of the intensity of the positioning signal received by the train during its movement.

[0027] Step S103 : performing feature matching based on the intensity variation trend and the signal variation trends with labels in a pre-stored database to obtain a successfully matched signal variation trend.

[0028] In one embodiment, a feature matching is performed based on the signal intensity change feature in the intensity change trend and the signal change trend pre-stored in the database, and the signal change trend with the highest feature similarity is regarded as a successfully matched signal change trend.

[0029] In one embodiment, the tag indicates whether the train's travel direction is up or down.

[0030] Step S104: determining the running direction of the train based on the label of the successfully matched signal change trend.

[0031] In one embodiment, the method further comprises: processing positioning signals collected during the movement of a train with a known direction of travel and storing the processing signals in the database.

[0032] Figure 4 FIG. 1 is a schematic diagram showing the corresponding relationship between the train running direction and the intensity change trend of the positioning signal in an embodiment of the present invention. Figure 4 As shown in (a), the trains running on the track 403 are divided into up trains 401 and down trains 402, and a ground locator 404 is set beside the track. Figure 4 As shown in (b), the ground locator 404 uses asymmetric signals on the left and right sides of the track 403, that is, the locator 404 is facing the track 403 at a 90-degree angle. That is, the signal strength or power sent to the left and right sides of the track 403 is asymmetric. When the up train 401 continuously collects the signal of the locator 404 during the journey, it generates the following Figure 4 (c) The signal change trend of the signal strength e over time t will produce corresponding change characteristics with the asymmetric signal generated by the locator 404; and the down train 402 continuously collects the signal of the locator 404 during the journey and generates the following Figure 4 The signal change trend of (d) is that the signal strength e will also produce another corresponding change feature with the asymmetric signal generated by the locator 404 over time t. Specifically, the change feature can be the amplitude or gradient of the change in signal strength power.

[0033] Specifically, based on the characteristics of the signal change trend, the change trend with the label with the highest correlation with the signal change trend can be matched in the database, and based on the label, it can be clearly determined whether the train is running in an up or down direction.

[0034] Specifically, the asymmetric signal of the locator 404 may be generated by a specific setting of a directional antenna or by shielding an existing antenna asymmetricly in a left-right manner, thereby generating a left-right asymmetric signal.

[0035] Specifically, the train can directly determine the train's position information through the signal of the ground locator 404. The asymmetric signal of the locator 404 in this embodiment can also determine the train's direction information more quickly and directly, thereby obtaining a complete mine car positioning status.

[0036] Figure 2FIG. 2 is a schematic diagram of the structure of a train positioning device 200 according to an embodiment of the present invention. Figure 2 As shown, the apparatus 200 may include:

[0037] The asymmetric positioning signal acquisition module 201 is configured to continuously acquire the asymmetric positioning signal sent by the ground locator during the train's movement.

[0038] The positioning signal change trend generating module 202 is configured to: generate a positioning signal strength change trend based on the continuously acquired asymmetric positioning signal;

[0039] The change trend matching module 203 is configured to: perform feature matching based on the intensity change trend and the signal change trend with labels in a pre-stored database to obtain a successfully matched signal change trend;

[0040] The train running direction determination module 204 is configured to determine the train running direction based on the label of the successfully matched signal change trend.

[0041] The present invention also provides an electronic device 300 . Figure 3 FIG. 3 is a schematic diagram of an electronic device 300 according to an embodiment of the present invention. Figure 3 As shown, the electronic device 300 includes a processor 310 and a memory 320 , wherein the memory 320 stores instructions, wherein when the instructions are executed by the processor 310 , the method 100 described above is implemented.

[0042] The present invention further provides a computer-readable storage medium having computer instructions stored thereon. When the computer instructions are executed, the method described above is executed.

[0043] The present invention also provides a computer program product, comprising a computer program, which implements the above-mentioned method when executed by a processor.

[0044] Some aspects of the methods and apparatus of the present invention may be performed entirely by hardware, entirely by software (including firmware, resident software, microcode, etc.), or by a combination of hardware and software. The above hardware or software may be referred to as "data blocks," "modules," "engines," "units," "components," or "systems." The processor may be one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DAPDs), programmable logic devices (PLCs), field programmable gate arrays (FPGAs), processors, controllers, microcontrollers, microprocessors, or combinations thereof. In addition, various aspects of the present invention may be embodied as computer products in one or more computer-readable media, the product including computer-readable program code. For example, computer-readable media may include, but are not limited to, magnetic storage devices (e.g., hard disks, floppy disks, tapes, etc.), optical disks (e.g., compact disks (CDs), digital versatile disks (DVDs), etc.), smart cards, and flash memory devices (e.g., cards, sticks, key drives, etc.).

[0045] Flowcharts are used herein to illustrate the operations performed by the methods according to the embodiments of the present application. It should be understood that the preceding operations are not necessarily performed in exact order. Instead, the various steps may be performed in reverse order or simultaneously. Furthermore, other operations may be added to these processes, or one or more operations may be removed from these processes.

[0046] It should be understood that although this specification is described according to various embodiments, not every embodiment contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0047] The above description is only an illustrative embodiment of the present invention and is not intended to limit the scope of the present invention. Any equivalent changes, modifications and combinations made by those skilled in the art without departing from the concept and principle of the present invention shall fall within the scope of protection of the present invention.

Claims

1. A train positioning method (100), characterized in that: The method comprises: Acquiring an asymmetric positioning signal (S101): While the train is moving, continuously acquiring an asymmetric positioning signal sent by a ground locator: Generating a positioning signal change trend (S102): generating a positioning signal strength change trend based on the continuously acquired asymmetric positioning signal; Matching change trends (S103): performing feature matching based on the intensity change trend and the signal change trends with labels in a pre-stored database to obtain a successfully matched signal change trend; Determine the running direction of the train (S104): determine the running direction of the train based on the label of the successfully matched signal change trend.

2. The method according to claim 1, characterized in that The asymmetric positioning signal is sent to the train by the ground locator, and the asymmetric positioning signal is left-right asymmetric relative to the running track where the train is located.

3. The method according to claim 1, characterized in that The intensity variation trend is the variation trend of the intensity of the positioning signal received by the train during its movement over time.

4. The solution according to claim 1, characterized in that Matching the change trend (S103) further includes: matching the characteristics of the signal intensity change in the intensity change trend with the signal change trends pre-stored in the database, and the signal change trend with the highest feature similarity is used as the successfully matched signal change trend.

5. The method according to claim 1, wherein The tag indicates whether the train is traveling in an upward or downward direction.

6. The method according to claim 1, characterized in that The method further comprises: processing positioning signals collected during the movement of a train with a known moving direction and storing the processing signals in the database.

7. A train positioning device (200), characterized in that: The device comprises: The asymmetric positioning signal acquisition module (201) is configured to: continuously acquire the asymmetric positioning signal sent by the ground locator during the train's movement: A positioning signal change trend generating module (202) is configured to: generate a positioning signal strength change trend based on the continuously acquired asymmetric positioning signal; A change trend matching module (203) is configured to: perform feature matching based on the intensity change trend and the signal change trend with a label in a pre-stored database to obtain a successfully matched signal change trend; The train running direction determination module (204) is configured to determine the train running direction based on the label of the successfully matched signal change trend.

8. An electronic device (300), comprising: at least one processor (310); as well as A memory (320) coupled to the at least one processor (310), the memory (320) being configured to store instructions, which, when executed by the at least one processor (310), causes the processor (310) to perform the method according to any one of claims 1 to 6.

9. A computer-readable storage medium having computer instructions stored thereon, wherein the computer instructions, when executed, perform the method according to any one of claims 1 to 6.

10. A computer program product, characterized in that The invention comprises a computer program, which implements the method according to any one of claims 1 to 6 when being executed by a processor.

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