KR101939941B1 - Catenary furniture deformation video surveillance system - Google Patents

Abstract

The present invention relates to a system for a video surveillance of traction line facility deformation, and more specifically, to a system for a video surveillance of traction line facility deformation, which image-processes videos capturing traction line facilities to inspect deformation or damage of the traction line facilities in real time, generates a reference value (including interval between traction lines and horizontal pipes, or the like) for maintenance of traction line facilities, and through the image process, measures and stores measuring values for inspection items for maintenance of the traction line facilities, and analyzes data and manages histories. According to the present invention, the system uses an existing captured image of traction line facilities to calculate measuring values for major maintenance reference points, utilizes the generated reference values to maintenance to reduce errors by actual measurement (nighttime field work/work error or the like), and provides convenience for field workers.

Description

{CATENARY FURNITURE DEFORMATION VIDEO SURVEILLANCE SYSTEM}

More particularly, the present invention relates to a system and method for monitoring a deformation and image damage of a facility by image processing an image of a facility by using a catenary line, It is used to create reference values for maintenance (distance between the cubicle and horizontal pipe) and to measure, check, store, analyze, and manage the history of the maintenance items To a transformed video surveillance system.

Generally, a commercial train, especially a high-speed train, travels by using the electric energy received from a train line as a dynamo. Therefore, when a pantograph installed on a train touches a line, how stable is it to follow the line Driving performance such as traction or braking of a train is influenced.

The movable bracket is a core facility of an electric railway supporting the electric railway, and it should be managed and maintained so that the pantograph of the electric railway train can stably contact the electric railway line without exceeding the specified building construction limit.

Maintenance of these movable bracket facilities is carried out by a walk-through inspection method, and the risk factors for the electric railway line increase due to lack of maintenance time for vast railway facilities due to increase of railway facilities, high-speed train, There is a tendency.

However, as a method to confirm whether or not the movable bracket is damaged by such visual inspection, the availability of the vehicle is increasing due to an increase in the railway facilities (extension of the railway line), so that the efficiency of checking a large number of facilities There was a problem. In other words, it is not easy for the operator to visually observe the appearance of the movable bracket, to accurately grasp the deviation of the screws and bolts, and to check whether the parts are damaged by the visual and experience of the operator, .

Particularly, the movable bracket facilities are installed at a height of 5 m or more from the ground to support the electric cable, and have to be performed at the early morning hours when the commercial operation of the electric railway vehicle is finished for maintenance.

Since the introduction of the high-speed railway in 2002, the damages due to accumulation of mechanical and electrical fatigue have been increasing. Therefore, advanced inspection technology is required for fast and precise diagnosis of the movable bracket deformation inspection.

In Korea, however, there is no way to automatically measure the deformation of the facilities by electric cable, so the workers are checking the facilities with the naked eye by the naked eye, and the facilities are inspected according to the eyes of workers as well as the risk of safety accidents in high pressure environment There is a problem that it is difficult to establish a scientific maintenance system for the facilities by electric cable.

KR 10-0994159 B1 KR 10-1701160 B1

According to an aspect of the present invention, there is provided a method of manufacturing a pantograph, the method comprising: analyzing a state of a movable bracket to maintain a structure of a catenary contacting with the pantograph; And to transmit the information about the facility to a manager in real time.

It is also intended to provide a transformed video surveillance system for a catenary line facility which can integrate and standardize a detection system for a catenary line facility and establish a systematic and accurate maintenance system for the catenary line facility.

In order to solve the above-described problems, the present invention is a video surveillance system installed on a traveling train (20) for image processing a video image of a catenary facility and generating a reference value for maintenance of the catenary facility A recognition unit 110 installed on the top surface of the train 20 for recognizing the movable bracket in real time through laser marking during operation of the train 20; A photographing unit 120 installed on a car top surface of the train 20 for photographing a front or rear image of the movable bracket when the photographing signal is transmitted from the recognizing unit 110; An image collecting unit 130 installed on a vehicle of the train 20 for collecting and storing images of the movable bracket photographed by the photographing unit 120; And a deformation analysis unit (140) for analyzing the moving bracket image photographed by the photographing unit (120) in real time to grasp the deformation state of the movable bracket and managing the history of the defective movable bracket, The deformation analysis unit 140 may measure at least one of a position, a variation, and a separation distance of the facility included in the movable bracket to generate a reference value.

The recognition unit 110 recognizes the presence of the movable bracket by recognizing the laser marked on the movable bracket as an image while the train 20 travels; A laser device (112) for marking a pipe on the movable bracket with a laser so that the cognition device (111) can confirm the presence of the movable bracket; And a trigger device 113 for transmitting a photographing signal to the photographing unit 120 so that the photographing unit 120 can photograph the movable bracket when the recognizing device 111 recognizes the movable bracket.

The photographing unit 120 includes a camera 121 for photographing an image of the movable bracket and generating an image signal when a photographing signal is transmitted from the trigger device 113; The camera 121 provides a light source for capturing an image of the movable bracket, and includes an illumination device 122 composed of any one of LED, COB, and laser.

The deformation analyzer 140 includes an analysis server 141 for analyzing images of the movable bracket transmitted by the photographing unit 120 and determining reference values for the position, shape, and displacement of the components of the movable bracket, ; A reference value DB (142) for storing a reference value determined for the movable bracket; And a history management DB 143 for storing information and maintenance details of the movable bracket in which defects or deformations have occurred.

The analysis server 141 separates the image of the horizontal pipe 4 from the image of the movable bracket and displays two imaginary two points A And B are set and the horizontality of the horizontal pipe 4 is calculated by calculating the difference D ₁ between the height of A and the height of B in the vertical direction so as to be compared with the maintenance reference value .

The analysis server 141 separates the images of the horizontal pipe 4 and the catenary line 10 from the images of the movable brackets and separates the images of the vertical pipe 4 and each of the center lines of the catenary line 10 of the actual and measuring the distance (E _1), determine the theoretical distance (E ₂₎ between each center axis of the horizontal pipe (4) and the catenary (10) from the design specifications of the facility to the catenary, and the actual A distance D ₂ between the distance E ₁ and the theoretical distance E ₂ is calculated to calculate an interval distance between the horizontal pipe 4 and the catenary 10 to be compared with the maintenance reference value .

The analysis server 141 separates the images of the caten grid 10 and the curved pulling fixing metal 9 from the image of the movable bracket and displays the images on the lower surface of the catenary 10 and the curve pulling fixture 9 (E ₃ ) between the central axis of the mounting point of the curved line fixing fixture (9) and the center axis of the mounting point of the curved line fixing fixture (9) in the design specification of the catenary facility the vertical height (E ₃₎ and the theoretical distance (E _4), the fixed bracket (9 calculates the difference (D ₃₎ between said catenary (10) and pull the curve determine the theoretical distance (E ₄₎ between, and And a vertical height between the mounting point and the mounting reference point is calculated and compared with the maintenance reference value.

According to the present invention, it is possible to calculate the measurement value of the maintenance main reference point by using the previously captured image of the electric cable line facility, and utilize the generated reference value in maintenance to measure the error by the actual measurement (nighttime work / ) Can be reduced and the convenience to the field worker can be provided.

1 is a block diagram showing a configuration of a video surveillance system according to an embodiment of the present invention;
2 is a conceptual diagram for explaining a video surveillance system of the present invention;
3 is a view showing a structure of a movable bracket to be monitored;
4 is a flowchart showing a process of a monitoring method using a video surveillance system.
5 shows a method for checking the horizontality of a horizontal pipe.
6 is a view showing a method of calculating a distance between a catenary line and a horizontal pipe.
7 is a view showing a method of obtaining a distance between a lower surface of a catenary and a center axis of a curved pulling-down fixture.

Hereinafter, a " catenary facility deformation video surveillance system "(hereinafter referred to as a video surveillance system) according to an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of a video surveillance system according to an embodiment of the present invention. FIG. 2 is a conceptual view for explaining a video surveillance system of the present invention, FIG. 3 is a diagram showing a structure of a movable bracket to be monitored And FIG. 4 is a flowchart showing a process of a monitoring method using a video surveillance system.

The video surveillance system 100 of the present invention comprises a recognition unit 110, a photographing unit 120, an image collecting unit 130, and a deformation analysis unit 140, as shown in FIG. The video surveillance system 100 is configured to be connected to the remote control system 200 through a wired / wireless communication network.

The recognition unit 110 is installed on the train top surface of the train 20 and recognizes the movable bracket in real time at a train speed of 1 to 300 km / h. The recognition unit 110 includes a recognition device 111, a laser device 112, And a device 113.

The recognition device 111 is a device for confirming the presence or absence of a movable bracket while the train 20 is running. The laser device 112 is provided with a laser beam on the movable bracket so that the recognition device 111 can confirm the presence or absence of the movable bracket. . ≪ / RTI > At this time, the pipe refers to the frame constituting the movable bracket. The cognitive device 111 comprises a camera for capturing an image so that the laser marked on the movable bracket can be recognized as an image.

The trigger device 113 is a device that transmits a photographing signal so that the camera 121 of the photographing unit 120, which will be described later, can photograph the movable bracket when the recognizing device 111 recognizes the movable bracket. When the photographing signal of the trigger device 113 is received, the operation of the photographing unit 120 is started.

The photographing unit 120 is installed in front of and behind the train 20 to photograph an image of the movable bracket. The photographing unit 120 includes a camera 121 and a lighting device 122.

The camera 121 is constituted by a video signal generating device for capturing an image of the movable bracket.

The illumination device 122 is an illumination device for providing a light source for capturing an image of the movable bracket by the camera 121, and is composed of an LED, a COB, a laser, or the like.

The image collecting unit 130 is installed on the car of the train 20 and comprises a collection server 131, a control unit 132, and a communication modem 133.

The collection server 131 provides a user with a system operating environment for collecting and analyzing moving bracket images.

The control unit 132 controls the camera 121 of the photographing unit 120 installed on the train 20 and collects the image data of the movable bracket photographed by the camera 121. [

The communication modem 133 is a communication device that supports remote operation of a collection analysis program in a ground office or a user smartphone with the control system 200 to operate the system.

The deformation analysis unit 140 includes an analysis server 141, a reference value DB 142, and a history management DB 143.

The analysis server 141 verifies the analysis result of the deformation state of the movable bracket and provides the user with a system operation environment for managing the history of the analysis result. The movable bracket deformation verification software installed in the analysis server 141 allows the user to finally confirm and verify the result of the deformation analysis of the movable bracket.

The reference value DB 142 stores a main reference value (measured value of the reference point) generated by the video surveillance system 100 by photographing and analyzing the movable bracket. The stored reference value is used for the maintenance of the catenary facility including the movable bracket. The reference value DB 142 further includes information such as location information and management criteria for a large movable bracket facility.

The history management DB 143 is a device for managing the information and the maintenance history of the movable brackets in which defects or deformations have occurred and stores various analysis results so that they can be checked by route and period. Reaffirm (feedback).

In addition, it may further include a measuring device installed on a wheel of the train to measure the running speed and the moving distance of the train.

Fig. 2 shows a configuration and an installation state of the system for checking deformation of the movable bracket.

The train 20 can be operated at a speed of 1 to 300 km / h, and a system for inspecting the movable brackets is installed on the car towers, on the upper and lower sides, respectively.

The recognition unit 110 is installed at the midpoint between the front photographing unit 120 and the rear photographing unit 120 installed in front of and behind the car tower of the train 20 and recognizes the movable bracket in real time.

The photographing unit 120 photographs the front and back surfaces of the movable bracket at the front 201 and rear 202 of the train 20 while the train 20 is operating.

The image collecting unit 130 is installed on the vehicle of the train 20 and provides a system operating environment for image acquisition and analysis of the movable bracket.

3 shows the structure of the movable bracket.

The movable bracket is installed at a height of 5 m or more from the ground and is installed at a distance of 30 m to 50 m on the railway line, which is a core facility of an electric railway, which is installed in a railway station and supports a catenary line 10 for supplying electric power to a train .

Specifically, the catenary facility includes a main pole 1 installed to be spaced apart at regular intervals, a main pipe 2 fixed obliquely upward in the middle of the pole 1, a main pole 1 and a main pole 2 And an upper pipe (3) fixed between the ends of the upper pipe (3).

A horizontal pipe 4 is provided in the middle of the main pipe 2 and a horizontal support pipe 5 is connected to the main pipe 2 by a fixing metal in the middle of the horizontal pipe 4. The horizontal pipe 4 is supported by the horizontal support pipe 5 so as not to be sagged downward.

A curve pulling support pipe 6 is connected downward at the end of the horizontal pipe 4 and a curved pulling fixture 7 is provided at the end of the curve pulling support pipe 6 by a curved pulling fixture 9 . The curved pulling metal 7 is connected to the catenary line 10 and pulled in the horizontal direction so that a curved contact line is formed between the catenary line 10 and the pantograph.

A dropper (8) is vertically connected between the catenary line (10) and the hook line (11).

The structure of the connection ring, insulation insulator, clamp, and the like, which are installed in the catenary facility, is a construction that is commonly used in the technical field of the present invention, and therefore, a detailed description thereof will be omitted in the description of the present invention.

The video surveillance system 100 of the present invention generates and stores numerical values of relative positions, deformations, and the like of pipes and brackets included in a catenary facility, and numerical values of major reference points with respect to locations of facilities.

Hereinafter, the detection method of the present invention will be described with reference to Figs. 1 to 4. Fig.

When the train 20 starts to travel, the cognition unit 110 installed on the car top surface is operated to recognize the facility by the cable line (S102). At this time, if the cabled facility is recognized by the cognition unit 111, 120 is operated to photograph the front or rear view of the facility by the catenary line. In the present invention, it is described that abnormalities are detected while photographing an image of a movable bracket supporting a catenary 10 among the catenary facilities.

The trigger device 113 transmits a control signal for starting the operation of the photographing unit 120 every time the recognizing device 111 recognizes the shape of the movable bracket. The cognitive device 111 recognizes the shape and position of the movable bracket by sensing the laser marked on the movable bracket by the laser device 112. [

The camera 121 captures an image of the movable bracket with the aid of the illumination device 122 and transmits the generated image signal to the image capturing unit 130 to be stored therein. it is preferable to take a picture at a shutter speed of not more than 10 mu s so that an image of the movable bracket is not blurred at a speed of / h. Further, the camera 121 uses a high-resolution camera capable of photographing parts (screw pins, bolts, etc.) of less than 1 mm in size that are difficult for the maintenance worker to visually recognize.

The image signal stored in the image collecting unit 130 is transmitted to the deformation analyzing unit 140. The analysis server 141 of the deformation analyzing unit 140 analyzes the position and shape of various components of the movable bracket, (S106) The reference value determined by the deformation analysis unit 140 is used as a reference value for future maintenance of the movable bracket. The generated reference value is stored in the reference value DB 142.

The analysis server 141 separates the surrounding background of the movable bracket to be analyzed from the original image of the movable bracket and its surroundings. That is, only the image of the movable bracket can be selected through an image processing process for recognizing a straight line (pipe or wire) constituting the movable bracket in the original image and removing the remaining background pixels except for the straight line. In this state, the analysis server 141 analyzes the deformation state of the pipe or electric wire included in the movable bracket. (S108) Deformation information on the movable bracket is stored in the history management DB 143. [

The maintenance reference value determined by the deformation analysis unit 140 and deformation information of the movable bracket are transmitted to the control system 200 through the wired / wireless communication network (S110)

If the degree of deformation of the movable bracket exceeds the threshold value, the control system 200 transmits data to the administrator's portable terminal and reports an alarm to perform maintenance. (S112) It is preferable to transmit the entire image of the train 20 or the railway line facilities together.

Meanwhile, FIG. 5 shows a method of checking the horizontality of the horizontal pipe.

A method of measuring the horizontality of the horizontal pipe 4, one end of which is fixed to the main pipe 2 and the other end of which is connected to the curved pulling support pipe 6, Respectively.

The image for the horizontal pipe 4 is separated from the image signal generated by the photographing unit 120 in order to measure the horizontality of the horizontal pipe 4. Then, two virtual points A and B are set on the center axis of the horizontal pipe 4. The distance between A and B is set to be 2 m. If the difference (D ₁ ) between the height of A and the height of B in the vertical direction is obtained, it can be a reference value for judging the horizontality of the horizontal pipe 4.

The smaller the difference in height (D ₁ ), the better the horizontality.

6 is a view showing a method of calculating the distance between the catenary line and the horizontal pipe.

The horizontal pipe 4 is located on the top of the catenary 10 so that the deformation state of the movable bracket can be confirmed according to the distance between the horizontal pipe 4 and the caten grid 10. To do this, we obtain the distance between two components.

First, the image for the horizontal pipe 4 and the catenary line 10 is separated from the image signal generated by the photographing unit 120. And the actual distance E ₁ between the central axis of each of the horizontal pipe 4 and the catenary 10 in use is measured. And the theoretical distance (E ₂ ) between the central axis of each of the horizontal pipe 4 and the catenary line 10 is measured. Theoretically, the distance is checked by the design specification of the catenary facility. Thus, by calculating the difference (D ₂ ) between the theoretical distances at the actual distance, it is possible to confirm the deformation state of the distance between the horizontal pipe 4 and the caten grid 10.

7 is a view showing a method of determining the distance between the lower surface of the electric line and the center axis of the curved pulling-fastening fixture.

The distance between the catenary line 10 and the curve pulling fastening metal 9 is used to determine the height and contact path of the catenary 10.

First, the image for the caten grid 10 and the curve pulling fixture 9 is separated from the image signal generated by the photographing unit 120. [ Then, the actual distance (E ₃ ) between the lower surface of the electric wire 10 in use and the center axis of the mounting point of the curve pulling fixture 9 is measured. Then, the theoretical distance (E ₄ ) between the lower surface of the electric wire 10 and the central axis of the mounting point of the curve pulling fixing metal 9 is measured. The theoretical distance in this embodiment is also confirmed in the design specifications of the catenary facility. Then, by calculating the difference (D ₃ ) between the theoretical distances at the actual distance, it is possible to confirm the deformation state of the curve-drawing metal member 7.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, As will be understood by those skilled in the art. Therefore, it should be understood that the above-described embodiments are to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than the foregoing description, It is intended that all changes and modifications derived from the equivalent concept be included within the scope of the present invention.

1: pole 2: main pipe
3: upper pipe 4: horizontal pipe
5: Horizontal support pipe 6: Curved pulling support pipe
7: Curved bending bracket 8: Dropper
9: Curved pulling fixture 10: Electric wire
11: Couple line 20: Train
100: video surveillance system 110:
111: recognition device 112: laser device
113: Trigger device 120:
121: camera 122: illuminator
130: image collecting unit 131: collecting server
132: control unit 133: communication modem
140: Deformation analysis unit 141: Analysis server
142: reference value DB 143: history management DB
200: Control system

Claims (7)

An image surveillance system installed in a traveling train (20) for image processing an image of a meteorological facility and generating a reference value for maintenance of the meteorological facility,
A recognizing unit 110 installed on a car top surface of the train 20 for recognizing the movable bracket in real time through laser marking while the train 20 is operating;
A photographing unit 120 installed on a car top surface of the train 20 for photographing a front or rear image of the movable bracket when the photographing signal is transmitted from the recognizing unit 110;
An image collecting unit 130 installed on a vehicle of the train 20 for collecting and storing images of the movable bracket photographed by the photographing unit 120;
And a deformation analysis unit (140) for analyzing the moving bracket image photographed by the photographing unit (120) in real time to grasp the deformation state of the movable bracket and managing the history of the defective movable bracket,
The recognition unit 110
A recognizing device (111) for recognizing the laser marked on the movable bracket as an image during traveling of the train (20) to check the presence of the movable bracket;
A laser device (112) for marking a pipe on the movable bracket with a laser so that the cognition device (111) can confirm the presence of the movable bracket;
And a trigger device (113) for transmitting a photographing signal so that the photographing unit (120) can photograph the movable bracket at a time when the recognizing device (111) recognizes the movable bracket,
The photographing unit 120
A camera 121 for capturing an image of the movable bracket and generating an image signal when a photographing signal is transmitted from the trigger device 113;
And an illumination device (122) comprising any one of an LED, a COB and a laser, wherein the camera (121) provides a light source for capturing an image of the movable bracket,
The deformation analysis unit 140
An analysis server 141 for analyzing an image of the movable bracket transmitted by the photographing unit 120 to determine a reference value for the position, shape, and displacement of the movable bracket;
A reference value DB (142) for storing a reference value determined for the movable bracket;
And a history management DB (143) for storing information and maintenance details of the movable bracket in which defects or deformations have occurred,
The deformation analysis unit 140 measures at least one of a position, a variation, and a separation distance of the facility included in the movable bracket to generate a reference value,
The analysis server 141
Separating the image of the horizontal pipe 4 from the image of the movable bracket and setting two imaginary two points A and B spaced by a distance of 2 m on the center axis of the horizontal pipe 4, And calculating the horizontality of the horizontal pipe (4) so as to be compared with the maintenance reference value by calculating the difference (D ₁ ) between the height of A and the height of B system. delete delete delete delete delete delete

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