Rail damage mileage positioning device based on speed and mileage matching technology

Abstract

The utility model relates to a rail damage mileage positioning device based on a speed and mileage matching technology. The positioning device comprises a train top camera, a train side camera, a train bottom train body right side camera, a train bottom train body left side camera, a compensation camera, a background server and a kilometer signboard. According to the method, the main positioning mode that the image position obtained after image fusion is located to the specific mileage position is adopted, real-time shooting is conducted on a steel rail through a high-speed infrared CCD camera carried at the bottom of a train, the shooting frequency is determined by the running speed of the train, and finally it is guaranteed that 5%-10% of parts are reserved between all the images for image fusion; all the images are fused and spliced according to the shooting sequence, complete steel rail image data are drawn, and when it is found that a steel rail damage exists in a certain position in the image, the actual damage mileage position is reversely deduced and positioned according to the image position where the damage occurs.

Description

Technical field:

[0001] The utility model relates to the field of track damage positioning, in particular to a track damage mileage positioning device based on speed and mileage matching technology. Background technology:

[0002] The precise location of track damage is crucial for track maintenance. Efficiently locating the precise location of track damage and enabling timely repair and replacement has become a major challenge for the railway transportation industry. Train positioning is essential for precisely locating track damage.

[0003] Currently, commonly used train positioning technologies include: train positioning based on track circuits, train positioning based on transponders, and train positioning based on satellite positioning systems. Among them, the train positioning technology based on track circuits is a coarse-precision positioning method, and the positioning accuracy depends entirely on the length of the track section; the train positioning based on transponders is a point-based positioning method, which has the characteristics of strong anti-interference, no positioning blind spots, and stable operation. However, in order to achieve continuous and accurate positioning of trains, a large number of transponders need to be laid in the track, so the investment is huge; the train positioning using satellite positioning systems has high positioning accuracy and is easy to maintain, but there are positioning blind spots in places with many surrounding obstacles, such as mountains, cities, tunnels, etc. Therefore, there is a need for a track damage precision positioning device that can adaptively sample and fuse images. Utility model content:

[0004] The purpose of the utility model is to overcome the defects of the above-mentioned prior art and to provide a track damage mileage positioning device based on speed and mileage matching technology.

[0005] The utility model can be realized by the following technical solutions:

[0006] The track damage mileage positioning device based on speed and mileage matching technology is characterized by including: a train top camera, a train side camera, a train bottom right camera, a train bottom left camera, a compensation camera, a kilometer sign and a background server.

[0007] The train top camera is installed at the top of the train head;

[0008] The train side camera is installed on the side of the train head;

[0009] The camera on the right side of the train bottom is installed vertically above the right side rail of the train bottom;

[0010] The camera on the left side of the bottom of the train is installed vertically above the left side rail of the bottom of the train;

[0011] The compensation camera is installed in the middle of the bottom of the train and shoots forward;

[0012] The kilometer sign is installed beside the track;

[0013] The backend server is respectively connected to the train top camera, the train side camera, the train bottom right camera, the train bottom left camera and the compensation camera.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The track damage mileage positioning device proposed in this utility model, based on speed and mileage matching technology, uses image fusion as the main means and is used in conjunction with kilometer signs as an auxiliary means of track damage error correction;

[0016] 2. The track damage mileage location device proposed in this utility model, based on speed and mileage matching technology, can eliminate the negative impact of unfavorable factors such as complex scenes and changing light under different line conditions by identifying the fused images of the left and right tracks, and has excellent accuracy and robustness.

[0017] 3. The utility model can be applied to mountains, forests, cities, tunnels and areas with many obstacles around, making up for the defects of blind spots in satellite positioning. Description of the drawings:

[0018] Figure 1 This is a schematic structural diagram of the track damage mileage positioning device based on speed and mileage matching technology of the present utility model.

[0019] In the picture: 1. Camera on the top of the train; 2. Camera on the side of the train; 3. Compensation camera; 4. Camera on the right side of the bottom of the train; 5. Camera on the left side of the bottom of the train; 6. Kilometer sign; 7. Backend server.

[0020] Figure 2 Middle: 3 is the compensation camera; 4 is the camera on the right side of the train bottom; 5 is the camera on the left side of the train bottom. Specific implementation method:

[0021] 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 embodiments described are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0022] Implementation example Figure 1As shown, the track damage mileage positioning device based on speed and mileage matching technology of the present invention includes a train top camera 1, a train side camera 2, a train bottom right camera 4, a compensation camera 3, a train bottom left camera 5, a kilometer sign 6 and a background server 7.

[0023] The train top camera 1 is responsible for detecting signboards and capturing images of the identified signboards. If the train is operating at low speeds, such as when only positioning the train within the station, the top camera may not be required.

[0024] The train side camera 2 is used to capture a set of continuous images of the train passing the kilometer sign, and is responsible for capturing images to determine the timing of the train passing the sign;

[0025] The right camera 4 at the bottom of the train, the left camera 5 at the bottom of the train, and the compensation camera 3 capture images of the left, right, and positive directions of the bottom of the train and fuse them through an algorithm to determine the location of track damage;

[0026] The kilometer sign 6 is used to mark the kilometer sign information. The sign should be made into a trihedron or tetrahedron, which is convenient for the top and side cameras to capture images;

[0027] The backend server 7 is used to receive and process images captured by the train top camera and the train side camera, then perform image recognition and analysis, and communicate data with the train ATP / ATO equipment;

[0028] The train top camera 1, train side camera 2, compensation camera 3, train bottom right camera 4 and train bottom left camera 5 are all high-speed infrared CCD cameras;

[0029] The principle of train positioning of this utility model is as follows:

[0030] The damage is located at a specific mileage position through image fusion as the main positioning method. The rails are photographed in real time by high-speed infrared CCD cameras 3, 4, and 5 mounted on the bottom of the train. The compensation camera (3) is located in the middle of the bottom of the train and shoots the center of the track. The range is the bottom area of ​​the train with the left and right rails. The left camera (5) shoots the left side of the bottom of the train, and the right camera (4) shoots the right side of the bottom of the train. The shooting frequency is determined by the running speed of the train. Ultimately, 5-10% of the image is left between each image for image fusion. All images are then fused and spliced ​​according to the shooting order to draw a complete rail image data. When rail damage is found somewhere in the image, the actual mileage position of the damage is reversed based on the image position where the damage appears.

[0031] When passing the kilometer mark, the kilometer mark is used for correction. After the top camera 1 finds the positioning sign, it transmits the captured image to the background server for recognition, and at the same time notifies the side high-speed camera 2 to start working, judge the time when the train passes the sign, and send the correction command and the corrected kilometer mark data to ATP / ATO to assist the three cameras at the bottom of the vehicle for precise positioning.

[0032] In actual application, when a train passes a kilometer marker, a high-speed camera continuously captures multiple images. The device then categorizes the recognized kilometer markers by their numerical values ​​(unrecognized ones are counted as all zeros). Only when the recognition rate exceeds a certain threshold is the recognition considered successful, which serves as a basis for positioning, compensating for individual image recognition failures. Furthermore, since a large number of images must be processed quickly during train travel, the introduction of Haar cascades, HOG detectors, parallel strategies, and the use of higher-performance equipment can improve detection efficiency and ensure that the detection results meet the requirements.

[0033] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and such modifications or substitutions are intended to be within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope of protection of the claims.

Claims

1. A track damage mileage positioning device based on speed and mileage matching technology, characterized in that: include: A train top camera (1), a train side camera (2), a train bottom left camera (5), a train bottom right camera (4), a compensation camera (3), a kilometer sign (6) and a backend server (7), wherein the train top camera (1) is installed at the top position of the train head, the train side camera (2) is installed at the side position of the train head, the train bottom left camera (5) is installed at a position vertically directly above the left rail of the train bottom, the train bottom right camera (4) is installed at a position vertically directly above the right rail of the train bottom, the compensation camera (3) is installed at a position in the middle of the train bottom facing forward, the kilometer sign (6) is installed next to the line track, and the backend server (7) is connected to the train top camera (1), the train side camera (2), the train bottom left camera (5), the train bottom right camera (4) and the compensation camera (3) respectively.

2. A track damage mileage positioning device according to claim 1, characterized in that: The probe of the camera (1) on the top of the train is aimed at the kilometer sign (6).

3. A track damage mileage positioning device according to claim 1, characterized in that: The probe of the train side camera (2) is aimed at the kilometer sign (6).

4. A track damage mileage positioning device according to claim 1, characterized in that: The left camera (5) at the bottom of the train is aimed at the center of the track and on the left side.

5. The track damage mileage positioning device according to claim 1, characterized in that: The right camera (4) at the bottom of the train is aimed at the center of the track and on the right side.

6. The track damage mileage positioning device according to claim 1, characterized in that: The compensation camera (3) is aimed at the center of the track.

7. The track damage mileage positioning device according to claim 1, characterized in that: The kilometer sign (6) is provided with an area for marking kilometer mark information.

8. The track damage mileage positioning device according to claim 1, characterized in that: The train top camera (1) is a high-speed infrared CCD camera.

9. The track damage mileage positioning device according to claim 1, characterized in that: The train side camera (2) is a high-speed infrared CCD camera.

10. The track damage mileage positioning device according to claim 1, characterized in that: The left camera (3) at the bottom of the train is a high-speed infrared CCD camera.

11. The track damage mileage positioning device according to claim 1, characterized in that: The camera (4) on the right side of the bottom of the train is a high-speed infrared CCD camera.

12. The track damage mileage positioning device based on speed and mileage matching technology according to claim 1 is characterized in that: The compensation camera (5) is a high-speed infrared CCD camera.

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