Transponder installation anomaly detection method, system and device based on satellite positioning and storage medium

Abstract

The invention provides a transponder installation anomaly detection method, system and device based on satellite positioning and a storage medium. The method comprises the steps that a track where a train is located and the advancing direction of the train are determined; analyzing the fixed application data in the electronic map based on the obtained information of the track where the train is located, searching the electronic map in the advancing direction of the train, obtaining the correct number and the installation position of the next transponder, comparing the analyzed fixed application data in the electronic map with the obtained actual transponder data, and judging the abnormal state of the transponder; recording an exception to a log, and triggering a subsequent processing mechanism; the method can effectively solve the problem that train positioning and running direction judgment are wrong due to the fact that the installation position of the entity transponder deviates or the direction is abnormal.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of rail transit signal control, and particularly relates to a balise installation anomaly detection method, system and device based on satellite positioning and a storage medium. BACKGROUND

[0002] Balises have many important roles in railway systems, including transmitting fixed information, transmitting variable information and train positioning beacons, etc. If balises are placed incorrectly, problems such as inaccurate train positioning, abnormal signal transmission and communication interruption or confusion may occur. Therefore, balises are key equipment of train operation control systems and the basis for train positioning and direction determination.

[0003] Traditional balises are divided into passive type (fixed data storage) and active type (dynamic data update through trackside electronic unit), and the point communication characteristics of the balises cause the train to trigger the positioning signal only when passing through the balise, and there are significant positioning blind areas and direction determination failure risks in non-coverage areas. With the development of rail transit towards high density and intelligence, real-time detection of balise installation state and dynamic performance evaluation have become core needs to ensure train safety.

[0004] In the prior art, balise installation anomaly detection is mostly limited to visual inspection or tool-assisted physical detection (such as installation height and fastening degree) and static function test. For example, the electromagnetic field strength or data packet reception integrity is measured by a special tool, but such a method cannot capture dynamic anomalies in device operation (such as transient data transmission interruption caused by electromagnetic interference). In addition, the coordination between the balise system and external data such as satellite positioning (GNSS) and electronic maps is insufficient, resulting in single detection dimension. Although some train control systems attempt to integrate satellite positioning data, due to factors such as tunnel shielding and multipath effect, the positioning accuracy fluctuates greatly and cannot be directly used for balise state verification. SUMMARY

[0005] The application provides a balise installation anomaly detection method, system, device and storage medium based on satellite positioning to solve the problem of incorrect train positioning and running direction determination caused by installation position deviation or direction anomaly of physical balises.

[0006] In one aspect of the embodiment of the application, a balise installation anomaly detection method based on satellite positioning is provided, and the method comprises: determining the track where the train is located and the direction in which the train is advancing; Based on the obtained track information where the train is located, the fixed application data in the electronic map is parsed, the electronic map is searched in the direction of train advancement, the correct number and installation position of the next transponder are obtained, the parsed fixed application data in the electronic map is compared with the obtained actual transponder data, and the abnormal state of the transponder is judged. The abnormality is recorded to a log, and a subsequent processing mechanism is triggered.

[0007] In an embodiment, in the process of determining the track where the train is located and the direction of train advancement, the determination of the track where the train is located includes two cases: the train does not pass through a physical transponder and the train passes through a physical transponder, wherein: When the train passes through a physical transponder, the track position where the train is located is directly determined by the physical transponder; When the train does not pass through a physical transponder, the way of determining the track where the train is located and the direction of train advancement includes the following steps: The current latitude and longitude information of the train is obtained by satellite positioning, and the track station and the nearest track piece record point in the electronic map are determined according to the track geographic information file in the electronic map; The latitude and longitude information of the train is obtained by satellite positioning multiple times, the track range where the train is located is gradually narrowed, and if all positioning points fall within the same track interval, the track where the train is located is determined.

[0008] Further, the determination of the direction of train advancement is specifically based on the currently determined track where the train is located, taking the current track positioning as a reference, and traversing subsequent positioning points in both directions of the track; if multiple positioning points are located in the same direction, and the distance between two positioning points meets a threshold value and the speed measurement directions are consistent, the direction of train advancement is determined.

[0009] Further, if multiple positioning points are located in the same direction, and the distance between two positioning points meets a threshold value and the speed measurement directions are consistent, the direction of train advancement is determined, wherein the threshold value is a positioning distance threshold value, which can be dynamically adjusted according to the train speed to avoid misjudgment caused by positioning jitter; the dynamic adjustment according to the train speed includes narrowing the threshold value at low speed and expanding the threshold value at high speed.

[0010] In an embodiment, the comparison of the parsed fixed application data in the electronic map with the obtained actual transponder data to determine the abnormal state of the transponder specifically includes: If the actual transponder number does not match the expected number stored in the electronic map, the direction is determined to be abnormal; If the transponder number is correct, and the actual installation position deviates from the track coordinate in the electronic map by more than a threshold value, it is determined that the installation position is offset, and the installation position is determined to be abnormal; the threshold value can be freely set according to actual needs.

[0011] Furthermore, the fixed application data in the parsed electronic map includes: transponder link relationships and track coordinate position increment direction, specifically: the linking and sorting relationship of transponder numbers according to the track coordinate position increment direction.

[0012] Furthermore, the satellite positioning utilizes multi-source satellite data fusion, including combining positioning data from GPS, BeiDou, or one or more systems, and correcting signal propagation errors using an ionospheric / tropospheric error model (such as the Saastamoinen model). The electronic map includes summary information of the electronic map stored in TSRS, orbital geographic information files describing the relationship between satellite data and orbital position, and fixed application data of data boundaries, switches, transponders, signals and track data within sections and stations.

[0013] In another aspect of this invention, a transponder installation anomaly detection system based on satellite positioning is provided. The system includes a positioning module, an electronic map parsing module, an anomaly determination module, and a log management module, wherein: The positioning module is used to integrate multi-source satellite data and the Saastamoinen error correction model to output a high-precision orbital position; The electronic map parsing module is used to load the track geographic information file stored in TSRS and extract the transponder link relationship and coordinate direction; The anomaly detection module is used to achieve real-time anomaly detection based on dynamic thresholds and preset logic (numbering order, position deviation); The log management module is used to store exception records and trigger subsequent processing mechanisms.

[0014] In another aspect of the present invention, an electronic device is provided, including a memory and a processor, wherein the memory stores a computer program, and when the computer program is executed by the processor, the processor performs the steps of the satellite positioning-based transponder installation anomaly detection method as described above.

[0015] In another aspect of the present invention, an electronically readable storage medium is provided, on which a computer program is stored, wherein the computer program, when executed by a processor, implements the steps of the satellite positioning-based transponder installation anomaly detection method as described above.

[0016] Compared with the prior art, the present invention has the following advantages: 1. This invention supports different scenarios and achieves dynamic detection capabilities through the linkage of satellite positioning and electronic map data, satisfying the determination of the track / direction of the train passing / not passing the transponder; 2. This invention reduces the false alarm rate by comparing both the number and the position (e.g., when there is only a positional offset but the number is correct, it is marked as a warning rather than a fault); it supports mixed layout scenarios of virtual transponders (VB) and physical transponders, adapting to complex orbital environments.

[0017] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures pointed out in the description, claims and drawings. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of a transponder installation anomaly detection method based on satellite positioning.

[0020] Figure 2 This is another flowchart illustrating a transponder installation anomaly detection method based on satellite positioning.

[0021] Figure 3 This is a schematic diagram of a transponder installation anomaly detection system based on satellite positioning.

[0022] Figure 4 This is a schematic diagram of an electronic device for detecting transponder installation anomalies based on satellite positioning. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] In one embodiment, a transponder installation anomaly detection method based on satellite positioning is provided; please refer to [link to relevant documentation]. Figure 1 and Figure 2 , Figure 1 A flowchart illustrating a transponder installation anomaly detection method based on satellite positioning. Figure 2This is another flowchart illustrating a transponder installation anomaly detection method based on satellite positioning; the method includes the following steps: Step S1: Determine the track the train is on and the direction of its travel; Furthermore, determining the train's track includes two scenarios: the train has not passed a physical transponder and the train has passed a physical transponder. When a train passes a physical transponder, the train's track position is directly determined by the physical transponder. When a train does not pass a physical transponder, the methods for determining the train's track and direction of travel include the following steps: Step S101: Use satellite positioning to obtain the latitude and longitude information of the train, and combine it with the track geographic information file in the electronic map to determine the station where the train is located and the nearest track segment recording point; Step S102: After obtaining the latitude and longitude information of the train through multiple satellite positioning, the range of the train's track is gradually narrowed down. If the positioning points all fall within the same track section, the track where the train is located is determined.

[0025] Furthermore, determining the train's direction of travel is specifically based on the currently determined track where the train is located. Using the current track positioning as a reference, subsequent positioning points are traversed in both directions along the track. If multiple positioning points are located in the same direction, and the distance between two positioning points meets the threshold and the speed measurement direction is consistent, then the train's direction of travel is determined.

[0026] Furthermore, the satellite positioning utilizes multi-source satellite data fusion, including combining positioning data from multiple systems such as GPS and BeiDou, and corrects signal propagation errors through ionospheric / tropospheric error models (such as the Saastamoinen model); Furthermore, if multiple positioning points are located in the same direction, and the distance between two positioning points meets the threshold and the speed measurement direction is consistent, then the train's forward direction is determined. Here, the threshold is the positioning distance threshold, which can be dynamically adjusted according to the train speed to avoid misjudgment due to positioning jitter. The dynamic adjustment according to the train speed includes: reducing the threshold at low speeds and increasing the threshold at high speeds.

[0027] Step S2: Based on the obtained track information of the train, analyze the fixed application data in the electronic map, search the electronic map along the direction of the train's movement, obtain the correct number and installation location of the next transponder, compare the analyzed fixed application data in the electronic map with the obtained actual transponder data, and determine the abnormal state of the transponder. Furthermore, the electronic map includes electronic map summary information stored in TSRS, orbital geographic information files describing the relationship between satellite data and orbital position, and fixed application data such as data boundaries, switches, transponders, signals, and track data within sections and stations.

[0028] Furthermore, the fixed application data in the parsed electronic map includes: transponder link relationships and track coordinate position increment direction, specifically: the linking order of transponder numbers according to the track coordinate position increment direction; for example: the linking order of transponder numbers according to the track coordinate position increment direction is 1->2->3... linking order or ...->3->2->1 linking order, where 1, 2, and 3 are transponder numbers.

[0029] Furthermore, the step of comparing the fixed application data in the parsed electronic map with the acquired actual transponder data to determine the abnormal state of the transponder includes the following steps: Step S201: If the actual transponder number does not match the expected number stored in the electronic map, the direction is determined to be abnormal; for example: if the current direction of train travel is along the direction of train travel, transponder number 1 should be connected to transponder number 2, but in reality, transponder number 0 is installed instead of transponder number 2, then the installation direction is wrong, and the direction is determined to be abnormal. Step S202: If the transponder number is correct, but the deviation between the actual installation location and the track coordinates on the electronic map exceeds a threshold, then the installation location is determined to be offset, and the installation location is identified as abnormal. The threshold can be freely set according to actual needs, such as ±1 meter.

[0030] Step S3: Record the exception to the log and trigger subsequent processing mechanisms.

[0031] In one embodiment, please refer to Figure 3 A transponder installation anomaly detection system based on satellite positioning is provided. The system includes a positioning module, an electronic map parsing module, an anomaly judgment module, and a log management module, wherein: The positioning module 10 is used to integrate multi-source satellite data and the Saastamoinen error correction model to output a high-precision orbital position. The electronic map parsing module 20 is used to load the track geographic information file stored in TSRS and extract the transponder link relationship and coordinate direction; The anomaly detection module 30 is used to achieve real-time anomaly detection based on dynamic thresholds and preset logic (numbering order, position deviation); The log management module 40 is used to store exception records and trigger subsequent processing mechanisms.

[0032] In one embodiment, an electronic device is provided, which may be a terminal, and its internal structure diagram may be as follows: Figure 4As shown, the computer device includes a processor, memory, communication interface, display screen, and input device 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 and computer programs. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage medium. The communication interface is used for wired or wireless communication with external terminals; wireless communication can be achieved through Wi-Fi, mobile cellular networks, NFC (Near Field Communication), or other technologies. When executed by the processor, the computer program implements a satellite-based transponder installation anomaly detection method.

[0033] Those skilled in the art will understand that Figure 4 The structure shown is merely a block diagram of a portion of the structure related to the present application and does not constitute a limitation on the computer device to which the present application is applied. Specific computer devices may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.

[0034] In one embodiment, an electronically readable storage medium is provided having a computer program stored thereon, which, when executed by a processor, implements the steps of the satellite positioning-based transponder installation anomaly detection method as described above.

[0035] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A transponder installation anomaly detection method based on satellite positioning, characterized in that: Determine the track the train is on and its direction of travel; Based on the obtained track information of the train, the fixed application data in the electronic map is analyzed, the electronic map is searched along the direction of the train's movement, the correct number and installation location of the next transponder are obtained, and the fixed application data in the analyzed electronic map is compared with the actual transponder data to determine the abnormal state of the transponder. Record the exception in the log and trigger subsequent processing mechanisms.

2. The transponder installation anomaly detection method based on satellite positioning as described in claim 1, characterized in that, The determination of the train's track includes two scenarios: the train has not passed a physical transponder and the train has passed a physical transponder. When a train passes a physical transponder, the train's track position is directly determined by the physical transponder. When a train does not pass a physical transponder, the specific methods for determining the train's track location include: By using satellite positioning and obtaining the latitude and longitude information of the train, and combining it with the track geographic information file in the electronic map, the station where the train is located and the nearest track segment recording point are determined; By obtaining the latitude and longitude information of the train through multiple satellite positioning operations, the range of the train's track is gradually narrowed down. If all the positioning points fall within the same track section, the track where the train is located is determined.

3. The transponder installation anomaly detection method based on satellite positioning as described in claim 2, characterized in that, Determining the train's direction of travel specifically involves: Based on the currently determined train track, and using the current track positioning as a reference, traverse subsequent positioning points in both directions along the track; if multiple positioning points are located in the same direction, and the distance between two positioning points meets the threshold and the speed measurement direction is consistent, then determine the train's forward direction.

4. The transponder installation anomaly detection method based on satellite positioning as described in claim 3, characterized in that, If multiple positioning points are all located in the same direction, and the distance between two positioning points meets a threshold and the speed measurement directions are consistent, then the train's forward direction is determined, wherein: The threshold is the positioning distance threshold, which can be dynamically adjusted according to the train speed to avoid misjudgment due to positioning jitter. The dynamic adjustment based on train speed includes: reducing the threshold at low speeds and increasing the threshold at high speeds.

5. The transponder installation anomaly detection method based on satellite positioning as described in claim 1, characterized in that: The step of comparing the fixed application data in the parsed electronic map with the acquired actual transponder data to determine the abnormal state of the transponder specifically includes: If the actual transponder number does not match the expected number stored in the electronic map, the direction is determined to be abnormal. If the transponder number is correct, but the actual installation location deviates from the track coordinates on the electronic map by more than a threshold, it is determined that the installation location is offset and the installation location is abnormal.

6. The transponder installation anomaly detection method based on satellite positioning as described in claim 5, characterized in that: The fixed application data in the analyzed electronic map includes transponder link relationships and the direction of increase in track coordinate positions, specifically referring to the linking and sorting relationship of transponder numbers according to the direction of increase in track coordinate positions.

7. A transponder installation anomaly detection method based on satellite positioning as described in any one of claims 1 to 6, characterized in that: The satellite positioning utilizes multi-source satellite data fusion, including combining positioning data from one or more systems such as GPS and BeiDou, and corrects signal propagation errors using the Saastamoinen model; The electronic map includes summary information of the electronic map stored in TSRS, orbital geographic information files describing the relationship between satellite data and orbital position, and fixed application data of data boundaries, switches, transponders, signals and track data within sections and stations.

8. A transponder installation anomaly detection system based on satellite positioning, characterized in that, The system includes a positioning module, an electronic map parsing module, an anomaly detection module, and a log management module, wherein: The positioning module is used to integrate multi-source satellite data and the Saastamoinen error correction model to output a high-precision orbital position; The electronic map parsing module is used to load the track geographic information file stored in TSRS and extract the transponder link relationship and coordinate direction; The anomaly detection module is used to realize real-time anomaly detection based on dynamic thresholds and preset numbering order and position deviation logic. The log management module is used to store exception records and trigger subsequent processing mechanisms.

9. A computer device, comprising a memory and a processor, wherein the memory stores a computer program, characterized in that, When the computer program is executed by the processor, the processor performs a transponder installation anomaly detection method based on satellite positioning as described in any one of claims 1 to 7.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements a transponder installation anomaly detection method based on satellite positioning as described in any one of claims 1 to 7.

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