KR101221028B1 - Clearance measurement system between railway vehicle and facility in railway tunnel - Google Patents

Clearance measurement system between railway vehicle and facility in railway tunnel Download PDF

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KR101221028B1
KR101221028B1 KR1020100139973A KR20100139973A KR101221028B1 KR 101221028 B1 KR101221028 B1 KR 101221028B1 KR 1020100139973 A KR1020100139973 A KR 1020100139973A KR 20100139973 A KR20100139973 A KR 20100139973A KR 101221028 B1 KR101221028 B1 KR 101221028B1
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South Korea
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unit
tunnel
image processing
processing unit
camera
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KR1020100139973A
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Korean (ko)
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KR20120077863A (en
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고태훈
이수길
한성호
노학래
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한국철도기술연구원
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  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Electromagnetism (AREA)
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Abstract

The present invention relates to a distance measuring device between a railway vehicle and a facility in a tunnel capable of accurately measuring the distance between the railway vehicle and a facility installed inside the tunnel.
In one example, a plurality of laser generating units mounted on a rail vehicle; A camera for recording a pattern formed by the laser irradiated from the laser generating unit touching the facility in the tunnel; An image processing unit for determining a distance between a running train and an inner surface of a tunnel from an image obtained through the camera; And an operation unit connected to the image processing unit through a network to perform processing such as determining, storing, or storing data received from the image processing unit, or transferring data and operation commands to the image processing unit. An apparatus for measuring the distance between a railroad car and facilities in a tunnel is disclosed.

Description

 {Clearance measurement system between railway vehicle and facility in railway tunnel}

The present invention relates to a distance measuring system between a railroad car and a facility in a tunnel.

When installing the facilities to be installed in the tunnel bore section, it is to be installed so that no contact (interference) with the railway vehicle passing through the tunnel occurs. Therefore, by measuring and determining the distance between the facilities in the tunnel, such as railroad cars and tram lines, the installation of the facilities on the cross section of the tunnel and correction of the installation position are made.

For this purpose, the distance measurement between the railroad car and the facilities in the tunnel should be performed, and the distance measurement between the railroad car and the facilities in the tunnel is performed by a human measurement method while the railroad vehicle is stopped.

However, the railroad car in operation may cause one-side pull, and in this case, the distance between the railroad car and the facilities in the tunnel may be different from the distance measured when the railroad car is stopped. Therefore, without taking into account the railway car pull phenomenon, contact (interference) between the railway car and the facilities in the tunnel may occur.

An object of the present invention is to provide a system for measuring a distance between a railroad car and a facility in a tunnel, which can accurately measure a gap between a railroad car and a facility in a tunnel.

In order to solve the above problems, a system for measuring a distance between a railway vehicle and a facility in a tunnel according to the present invention includes a plurality of laser generating units mounted on a railway vehicle; A camera for recording a pattern in which the laser irradiated from the laser generating unit touches the inside surface of the tunnel and the facility mounted in the tunnel; An image processing unit for determining an interval between a running train and facilities in a tunnel from an image obtained through a camera; And an operation unit connected to the image processing unit through a network to perform processing such as determining, storing, or storing data received from the image processing unit, or transferring data and operation instructions to the image processing unit.

The apparatus may further include a camera control unit connected to the camera and the image processing unit to control the camera according to data transmitted from the image processing unit.

The camera and the laser generating unit may further include a case, the heating unit and the cooling unit may be mounted.

The apparatus may further include a temperature control unit connected to the heating unit, the cooling unit, and the operation unit to control the temperature inside the case and provide the case internal temperature data to the processing unit.

Here, the operation unit includes a control unit for controlling the laser generating unit, the camera, the image processing unit, the camera control unit, the heating unit, the cooling unit, and the temperature control unit; A measurement environment management unit for checking a measurement environment in a distance measurement between a railroad vehicle and facilities in the tunnel; A data analyzer for analyzing data transmitted from the image processing unit and the temperature control unit; A data storage unit for storing data transmitted from the image processing unit and the temperature control unit; It may include an image / data display for displaying the data transmitted from the image processing unit and the temperature control unit.

It may further include a tunnel detection sensor connected to the laser generating unit and detecting the tunnel to operate the laser generating unit only when the railway vehicle passes through the tunnel.

The camera and the image processing unit may be connected via a link interface.

In a system for measuring a distance between a railroad car and facilities in a tunnel according to an exemplary embodiment of the present invention, a distance measurement between a railroad car driving a tunnel and a facility in a tunnel may be more accurately performed in real time.

1 is a block diagram of a gap measurement system between a railway vehicle and facilities in a tunnel according to an embodiment of the present invention.
FIG. 2 is a perspective view briefly illustrating a laser generating unit and a camera constituting a distance measuring system between a railroad vehicle and a facility in a tunnel according to an embodiment of the present invention; FIG.
3 is a view illustrating a distance measuring method using a laser generating unit and a camera constituting a distance measuring system between a railroad car and facilities in a tunnel according to an embodiment of the present invention.

Hereinafter, a distance measuring system between a railroad vehicle and facilities in a tunnel according to the present invention will be described in more detail with reference to the accompanying drawings.

1 is a block diagram of a system for measuring a gap between a railway vehicle and facilities in a tunnel according to an embodiment of the present invention, and FIG. 2 is a system for measuring a gap between a railway vehicle and a facility in a tunnel according to an embodiment of the present invention. 3 is a perspective view briefly illustrating a laser generating unit and a camera, and FIG. 3 illustrates a distance measuring method using a laser generating unit and a camera constituting a distance measuring system between a railway vehicle and a facility in a tunnel according to an embodiment of the present invention. The figure shown.

Referring to FIG. 1, a distance measuring system 100 between a railroad vehicle and a facility in a tunnel according to an embodiment of the present invention may include a laser generating unit 110, a camera 120, an image processing unit 130, and an operation unit. 190.

In addition, the distance measuring system 100 between the railroad vehicle 10 and the facilities (not shown) in the tunnel may include a camera control unit 140, a heating unit 150, a cooling unit 160, and a temperature control unit 170. ), The tunnel detection sensor 180 may further include.

The laser generating unit 110 is mounted on the railroad vehicle 10 to irradiate the laser generated to the tunnel inner surface 20. The camera 120 records a predetermined pattern formed by the laser generated by the laser generating unit collide with the facility (not shown) mounted on the tunnel inner surface 20 or the tunnel inner surface 20.

The image processing unit 130 is connected to the camera 120 to receive and analyze predetermined pattern data formed on the inner surface 20 of the tunnel taken by the camera 120 and the facilities (not shown) mounted in the tunnel. Determine the distance (distance) between the railroad car and the facilities in the tunnel. The operation unit 190 receives the data processed by the image processing unit 130 and performs processing such as determination, storage, or the like, and transmits data and operation commands to the image processing unit 130.

Referring to FIG. 2, the laser generating unit 110 is mounted on an upper portion of the railroad vehicle 10 to emit a laser to the tunnel inner surface 20 when the railroad vehicle 10 passes through the tunnel. The laser emitted from the laser generating unit 110 is emitted with a plane irradiation area perpendicular to the ground at an angle.

Therefore, the laser emitted from the laser generation unit 110 forms a vertical line pattern 112 on the tunnel inner surface 20 or on a facility (not shown) mounted in the tunnel. In the embodiment of the present invention, three laser generating units 110 are mounted at a distance of 5 cm from the upper side of the railroad car, and the laser generating unit 110 is mounted to correspond to the other side of the railroad car as an example. do.

The camera 120 photographs a predetermined pattern (several vertical line patterns 112) formed on the tunnel inner surface 20 by the laser generating unit 110. In more detail, the camera 120 is a camera capable of high speed photographing, and is mounted on an upper portion of the laser generating unit 110 positioned in the center of the three laser generating units 110.

In addition, a camera capable of high-speed shooting generally supports a field programmable gate array (FPGA), so that a user can program and use an operation of a desired camera. In the embodiment of the present invention, the camera 120 is programmed to photograph 250 fps (frame per second) by way of example.

Referring to FIG. 3, for example, when a railroad vehicle travels at a speed of 180 km / hr, the camera 120 may capture an image of one frame every time the train moves 20 cm. Therefore, since the laser generating unit 110 is positioned at 5 cm intervals, the camera 120 may photograph the line patterns 112 having 5 cm intervals every frame.

In addition, the laser generating unit 110 and the camera 120 may be stored in a separate case 102 mounted on the railroad vehicle 10. Since the laser generating unit 110 and the camera 120 are mounted outside (ie, the upper part) of the railroad vehicle 10 that runs at high speed, the laser generating unit 110 and the camera 120 may be exposed to various external environments (such as wind, outside temperature, etc.). Can be affected. Therefore, the case 102 is covered with the laser generating unit 110 and the camera 120 to minimize the influence from the external environment.

The image processing unit 130 is connected to the camera 120 to determine the distance between the railway vehicle 10 and the facilities installed in the tunnel from the continuous image obtained through the camera 120.

The image processing unit 130 may include a pattern 112, ie, a vertical line, formed at a facility (not shown) mounted on the tunnel inner surface 20 and the tunnel inner surface 20 by a laser beam emitted at a predetermined angle. By measuring the length and comparing the relative length of the plurality of vertical line patterns 112, it is possible to determine the distance between the railway vehicle 10 and the facilities in the tunnel or the distance between the railway vehicle and the tunnel inner wall surface.

In addition, the image processing unit 130 may be connected to the camera 120 through a link interface. Therefore, in the connection between the camera 120 and the image processing unit 130, it is possible to remove the constraint of the place where each should be located.

In addition, the image processing unit 130 may transmit the data to the operation unit 190 more simply by compressing the high capacity data received by the camera 120 to reduce the capacity.

The camera control module 140 is connected to the camera 120 and the image processing unit 130 to control measurement conditions of the camera 120. The camera control module 140 may control the operation of the camera 130 by transferring the firmware to the FPGA of the camera 120 in the form of firmware.

The heating unit 150 and the cooling unit 160 are mounted in the case 102 to maintain a constant temperature inside the case. Since the laser generating unit 110 and the camera 120 have a characteristic of sensitively reacting to an external temperature, and thus may affect the measurement result, the laser generating unit 110 and the camera 120 may laser the heating unit 150 and the cooling unit 160. This may be prevented by being located in the case 102 in which the generation unit 110 and the camera 120 are mounted.

The temperature control unit 170 is connected to the heating unit 150, the cooling unit 160, and the operation unit 190. The temperature control unit 170 may monitor the temperature inside the case (by mounting and connecting a temperature sensor (not shown), etc. in the case). The case 102 may be maintained at a constant temperature. Control the operation of the heating unit 150 and the cooling unit 160 to be. In addition, the temperature control unit 170 exchanges data regarding the temperature with the operation unit 190. That is, the distance between the railroad vehicle 10 and the facilities in the tunnel may be measured more accurately through the temperature data transmitted by the temperature control unit 170.

The tunnel detection sensor 180 is mounted to the case 102. The tunnel detection sensor 102 is connected to the laser generating unit 110 and detects that the railroad vehicle 10 is passing through the tunnel so that the laser generation unit 110 is only when the railroad vehicle 10 passes through the tunnel. To work.

The operation unit 190 is connected to the image processing unit 130 through a network to perform processing such as determining, storing, or storing data received from the image processing unit 130, or the image processing unit 130. Pass data and operation instructions.

The operation unit 190 includes a control unit 191, a measurement environment management unit 192, a data analysis unit 193, a data storage unit 194, and an image / data display unit 195.

The control unit 191 operates the laser generating unit 110, the camera 120, the image processing unit 130, the camera control unit 140, the heating and cooling units 150 and 160, and the temperature control unit 170. To control.

The measurement environment manager 192 stores variables (temperature, vibration, etc.) that may be present in the distance measurement environment between the railroad vehicle 10 and the facilities in the tunnel, and measures the situation by the controller 191 in the distance measurement. Ensure proper control is in place.

The data analyzer 193 analyzes data transmitted from the image processing unit 130 and the temperature control unit 170. That is, the data analyzer 193 may numerically analyze the image data transmitted by the image processing unit 130 and analyze the image data transmitted from the temperature control unit 170 as correction data, thereby enabling more accurate distance analysis.

The data storage unit 194 may store data transmitted from the image processing unit 130 and the temperature control unit 170, and may store data analyzed by the data analyzer 193. The data storage unit 194 may be connected to an image server (not shown) or a data server (not shown) to store data separately.

The image / data display unit 195 displays data transmitted from the image processing unit 130 and the temperature control unit 170. That is, the user can check the measurement image and the measurement data obtained during the distance measurement between the railroad vehicle 10 and the facilities in the tunnel.

Therefore, the embodiment according to the present invention can obtain accurate data in real time by measuring in real time and continuously the distance between the railroad vehicle running and the facility in the tunnel (or the distance between the railroad car and the inner surface of the tunnel).

The present invention is not limited to the above embodiments, and various modifications and changes may be made without departing from the technical spirit of the present invention. It will be apparent to those skilled in the art to which the present invention pertains. will be.

100: distance measuring system between a railway vehicle and facilities in a tunnel
110: laser generation unit 120: camera
130: image processing unit 140: camera control unit
150: heating unit 160: cooling unit
170: temperature control unit 180: tunnel detection sensor
190: operating unit

Claims (8)

A plurality of laser generating units mounted on a rail vehicle;
A camera for recording a pattern formed by the laser irradiated from the laser generating unit touching the inner surface of the tunnel and the facilities mounted in the tunnel;
An image processing unit for determining an interval between a running train and facilities in a tunnel from an image obtained through the camera;
An operation unit connected to the image processing unit via a network to determine, store or store data received from the image processing unit or to transmit data and operation instructions to the image processing unit; And
And a camera control unit connected to the camera and the image processing unit to control the camera according to data transmitted from the image processing unit. delete The system of claim 1, further comprising a case in which the camera and the laser generating unit are housed. 4. The system of claim 3, wherein the case is equipped with a heating unit and a cooling unit. The apparatus of claim 4, further comprising a temperature control unit connected to the heating unit, the cooling unit, and the operation unit to control a temperature inside the case and provide the case internal temperature data to the processing unit. Gap measurement system between railway vehicles and facilities in tunnels. The method of claim 5, wherein the operation unit,
A control unit for controlling the laser generating unit, the camera, the image processing unit, the camera control unit, the heating unit, the cooling unit, and the temperature control unit;
A measurement environment management unit which checks a measurement surrounding environment in the distance measurement between the railway vehicle and the facilities in the tunnel;
A data analyzer which analyzes data transmitted from the image processing unit and the temperature control unit;
A data storage unit for storing data transmitted from the image processing unit and the temperature control unit;
And an image / data display unit for displaying the data transmitted from the image processing unit and the temperature control unit. A plurality of laser generating units mounted on a rail vehicle;
A camera for recording a pattern formed by the laser irradiated from the laser generating unit touching the inner surface of the tunnel and the facilities mounted in the tunnel;
An image processing unit for determining an interval between a running train and facilities in a tunnel from an image obtained through the camera;
An operation unit connected to the image processing unit via a network to determine, store or store data received from the image processing unit or to transmit data and operation instructions to the image processing unit; And
And a tunnel detection sensor connected to the laser generating unit and detecting the tunnel to operate the laser generating unit only when the railroad vehicle passes through the tunnel. system. The system of claim 1, wherein the camera and the image processing unit are connected through a link interface.
KR1020100139973A 2010-12-31 2010-12-31 Clearance measurement system between railway vehicle and facility in railway tunnel KR101221028B1 (en)

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KR1020100139973A KR101221028B1 (en) 2010-12-31 2010-12-31 Clearance measurement system between railway vehicle and facility in railway tunnel

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Publication number Priority date Publication date Assignee Title
US10272929B2 (en) 2016-05-11 2019-04-30 Progress Rail Locomotive Inc. System and apparatus to maintain minimum clearance between train and railway infrastructure
KR101883340B1 (en) * 2017-08-23 2018-07-30 (주)가하 Position error compensation device of bogie for subsea tunnel
CN112325935A (en) * 2020-10-30 2021-02-05 湖北省水利水电规划勘测设计院 Safety performance monitoring system of deeply buried tunnel

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06273123A (en) * 1993-03-23 1994-09-30 Hitachi Electron Eng Co Ltd Apparatus for measuring separated distance between pantagraph and wall surface of tunnel
JPH06273124A (en) * 1993-03-23 1994-09-30 Hitachi Electron Eng Co Ltd Method for calculating shortest distance between pantagraph and wall surface of tunnel
JP2003172607A (en) * 2001-12-07 2003-06-20 Hitachi Industries Co Ltd Wheel-inspecting apparatus for railroad coach

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06273123A (en) * 1993-03-23 1994-09-30 Hitachi Electron Eng Co Ltd Apparatus for measuring separated distance between pantagraph and wall surface of tunnel
JPH06273124A (en) * 1993-03-23 1994-09-30 Hitachi Electron Eng Co Ltd Method for calculating shortest distance between pantagraph and wall surface of tunnel
JP2003172607A (en) * 2001-12-07 2003-06-20 Hitachi Industries Co Ltd Wheel-inspecting apparatus for railroad coach

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