EP1970279A1 - Kameraeinheit zur Überwachung einer Gleisanlage - Google Patents

Kameraeinheit zur Überwachung einer Gleisanlage Download PDF

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Publication number
EP1970279A1
EP1970279A1 EP07103903A EP07103903A EP1970279A1 EP 1970279 A1 EP1970279 A1 EP 1970279A1 EP 07103903 A EP07103903 A EP 07103903A EP 07103903 A EP07103903 A EP 07103903A EP 1970279 A1 EP1970279 A1 EP 1970279A1
Authority
EP
European Patent Office
Prior art keywords
camera
camera unit
unit according
cameras
leds
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP07103903A
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English (en)
French (fr)
Inventor
Robertus Maria Hensen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Strukton Railinfra Installatietechniek BV
Original Assignee
Strukton Railinfra Installatietechniek BV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Strukton Railinfra Installatietechniek BV filed Critical Strukton Railinfra Installatietechniek BV
Priority to EP07103903A priority Critical patent/EP1970279A1/de
Publication of EP1970279A1 publication Critical patent/EP1970279A1/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61K—AUXILIARY EQUIPMENT SPECIALLY ADAPTED FOR RAILWAYS, NOT OTHERWISE PROVIDED FOR
    • B61K9/00—Railway vehicle profile gauges; Detecting or indicating overheating of components; Apparatus on locomotives or cars to indicate bad track sections; General design of track recording vehicles
    • B61K9/08—Measuring installations for surveying permanent way

Definitions

  • the invention relates to a camera unit for surveying a railway track, comprising a housing, a camera positioned therein and lighting means for lighting the railway,
  • a known camera unit of this type is provided with a line camera which scans the entire width of the railway track line by line, and is carried by a railway vehicle.
  • a camera unit of the type referred to above is characterised in that the camera is a matrix camera and in that the lighting means comprise light emitting diodes (LEDs).
  • LEDs light emitting diodes
  • a matrix camera does not scan or survey the railway track one-dimensionally (line by line) as is the case with the state of the art line camera, but makes two-dimensional images.
  • using light emitting diodes (LEDs) as lighting means makes it possible to achieve the required illumination of the railway track for making the images without an excessive power consumption.
  • a number of cameras are provided in said housing which are positioned along a line extending substantially transversally to the railway track to be surveyed. Together these cameras will cover the entire width of the railway track, thus surveying latter in an appropriate manner.
  • some of the cameras are directed vertically downwards, whereas other cameras are directed inclined downwards.
  • Cameras directed vertically downwards are fit best for surveying horizontally extending surfaces of parts of the railway track, whereas the cameras directed inclined downwards also can be used for surveying surfaces of parts of the railway track extending vertically or inclined (such as for example the sides of the rails).
  • nine cameras are positioned along said line, with a central camera directed vertically downwards and positioned in a vertical plane of symmetry of the railway track and with, at each side of the central camera, a first inner pair of cameras comprising a camera directed vertically downwards and a camera directed inclined downwards and outwards, and a second outer pair of cameras comprising a camera directed vertically downwards and a camera directed inclined downwards and inwards, wherein a vertical plane extending through each of the rails of the railway track extends between the corresponding first and second pairs of cameras.
  • the central camera and the vertically downwards directed cameras of the first inner pairs of cameras together survey the section of the railway track between the rails.
  • the two cameras of the first inner pairs of cameras directed inclined downwards and outwards will scan the two side faces of the rails facing towards each other, whereas the two cameras of the second outer pairs of cameras directed inclined downwards and inwards will scan the side faces of the rails facing away from each other.
  • Finally the two cameras of the second outer pairs of cameras directed vertically downwards survey the outer parts of the railway track, outside of the rails.
  • the camera unit in accordance with the present invention also is provided with a camera directing substantially forward in a direction in parallel to the railway track.
  • 'Forward' means in the direction of movement of the railway vehicle supporting the camera unit.
  • Such a forward directing camera can be used for surveying or scanning structures surrounding the railway track.
  • the camera unit can be adapted to changing circumstances.
  • the LEDs are positioned into arrays extending in parallel to and at both sides of the line of cameras. In such an arrangement of the LEDs and optimised illumination of the railway track may be obtained.
  • the cameras and LEDs transparent cover plates may be provided, protecting the camera(s) and LEDs against environmental influences (incoming fluids, dust etcetera).
  • the illumination-effect of the LEDs further may be improved by providing the housing with inner reflector means for reflecting the light emitted by the LEDs.
  • inner reflector means for reflecting the light emitted by the LEDs.
  • two spaced and inclined reflector plates extending substantially in parallel to the arrays of LEDs could be provided.
  • the camera unit comprises control means for controlling the matrix camera(s) with a frame rate in a range of 40-120 frames/sec., preferably 80 frames/sec.
  • a frame range generally will allow a surveying velocity (velocity of the railway vehicle) which is sufficiently high.
  • the lighting means generally operate continuously, in accordance with the present invention it is preferred that the LEDs are intermittently activated, with an activation time equivalent to the shutter time of the camera(s). This further reduces the power need.
  • the LEDs which could be of a novel improved type such as the Lumiled TM type, are overpowered during activation.
  • Such an overpowering of the LEDS leads to a further improved illumination, however because of the reduced activation time which is equivalent to the shutter time of the camera(s), the LEDs are not overloaded or damaged.
  • the shutter time of the camera(s) is in a range of 20-40 ⁇ s, preferably 30 ⁇ s.
  • the camera unit might comprise data storage means for storing the images recorded by the matrix camera(s).
  • the data stored on said data storage means can be retrieved for further processing.
  • the images captured by the matrix camera(s) are directly transmitted to external means by means of a transmitter/receiver assembly.
  • the camera unit in accordance with the present invention is extremely fit for connection to a railway vehicle.
  • FIG. 1 part of a railway track comprising two rails 1 and 2 is illustrated.
  • a camera 13 is provided directed substantially forward in a direction in parallel to the rails 1, 2 (i.e. in the direction of movement of the railway vehicle supporting the camera unit).
  • Cameras 5, 6, 8, 10 and 11 are directed vertically downwards.
  • Camera 8 is centrally positioned and will survey a central section of the railway track.
  • Cameras 5 and 6 will survey sections of the railway track on opposite sides of rail 1, whereas cameras 10 and 11 will survey sections of the railway track on opposite sides of rail 2.
  • Cameras 7 and 9 are directed inclined downwards and outwards, such as to survey the inner sides of rails 1 and 2 facing towards each other.
  • cameras 4 and 12 are directed inclined downwards and inwardly, such a to survey the outer sides of the rails 1 and 2 facing away from each other.
  • Top camera 13 can be used to survey structures surrounding the railway track and may give a general impression thereof.
  • the housing 3 further comprises two arrays 14 and 15 of LEDs, which are facing downwards and emit light towards the railway track.
  • the two arrays 14, 15 of LEDS extend substantially in parallel to and at both sides of the line of cameras 4-12.
  • Each array 14, 15 may comprise tens of thousands of LEDs.
  • Figure 2 shows in a frontal view the camera unit discussed in figure 1 . From figure 2 the different orientations of the cameras 4-12 and 13 discussed above appear clearly. Further it becomes clear, that an imaginary vertical plane extending through rail 1 (schematically indicated by a dotted line P1) would extend between the inner pair of cameras 6,7 and the outer pair of cameras 4, 5. The same applies for rail 2 and cameras 9, 10 and 11, 12 respectively (vertical plane P2).
  • FIG. 3 A housing 3 is shown schematically and in a cross section. At its frontal side the housing 3 is provided with a cover 16 which may be opened to make the inner parts of the housing 3 readily accessible. The lower side of the housing 3 is open.
  • Two mounting plates 17 connected to the housing 3 carry the two arrays 14 and 15 of LEDs.
  • the mounting plates 17 are interconnected by bridges 18 extending vertically and carrying the cameras 4-13.
  • the bridge 18 is provided with slots 19 cooperating with mounting means 20 (bolts, screws etc.) for a camera, such that the position of the camera is adjustable. It is noted, that such an adjustment could occur in any direction, and not only in the plane of the drawing.
  • the arrays 14 and 15 of LEDs extend at a lower level than the cameras 4-13.
  • two spaced reflector plates 21 and 22 are shown which are helpful in reflecting the light emitted by the diodes towards the railway track.
  • a transparent cover plate 23 is provided protecting the arrays of LEDs 14, 15 and cameras 4-13 from environmental influences (such as for example water, dust etc.).
  • a passage 24 may be provided for passing through cables 25, such as for example for connecting the arrays of LEDs 14, 15 and the cameras 4-13 with appropriate equipment.
  • FIG. 3 schematically connecting means 26 have been illustrated which may be used for connecting the housing 3 to a unit by means of which the assembly may be supported by a railway vehicle, such as the buffers thereof.
  • housing 3 there is sufficient room for housing several equipment, such as data storage means, power means, transmitter/receiver means etcetera.
  • FIG 4 again shows the camera unit illustrated in figure 3 , as shown from below.
  • the cover plate 23, however, has not been illustrated here. Specifically, said part of the camera unit has been illustrated which is provided with cameras 9-12.
  • a preferred LED for application in the camera unit is the LED of the Lumiled TM type, which is marketed by Lumileds lighting, LLC of San Jose, California, U.S.A.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Studio Devices (AREA)
EP07103903A 2007-03-12 2007-03-12 Kameraeinheit zur Überwachung einer Gleisanlage Withdrawn EP1970279A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP07103903A EP1970279A1 (de) 2007-03-12 2007-03-12 Kameraeinheit zur Überwachung einer Gleisanlage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP07103903A EP1970279A1 (de) 2007-03-12 2007-03-12 Kameraeinheit zur Überwachung einer Gleisanlage

Publications (1)

Publication Number Publication Date
EP1970279A1 true EP1970279A1 (de) 2008-09-17

Family

ID=38267558

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07103903A Withdrawn EP1970279A1 (de) 2007-03-12 2007-03-12 Kameraeinheit zur Überwachung einer Gleisanlage

Country Status (1)

Country Link
EP (1) EP1970279A1 (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011093470A (ja) * 2009-10-30 2011-05-12 Kyushu Railway Co 軌道検測のための検出器ユニット
EP2463175A3 (de) * 2010-12-13 2012-08-15 AIT Austrian Institute of Technology GmbH Verfahren zum Auffinden von Oberflächenfehlern
CN103738356A (zh) * 2013-12-20 2014-04-23 河北汉光重工有限责任公司 高速列车轮轨横向位移检测模块
AT14280U1 (de) * 2014-03-17 2015-07-15 Plasser & Theurer Export Von Bahnbaumaschinen Gmbh Vorrichtung zum Messen der Lage von Schienen eines Gleises
WO2015197206A1 (de) * 2014-06-25 2015-12-30 Bombardier Transportation Gmbh Vorrichtung und verfahren zur bestimmung mindestens einer eigenschaft eines gleises für ein schienenfahrzeug sowie schienenfahrzeug
EP3088274A1 (de) * 2015-04-24 2016-11-02 VolkerRail Nederland BV Videodetailbild der gleislage
JP2017132416A (ja) * 2016-01-29 2017-08-03 大鉄工業株式会社 レール監視装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5936353A (en) * 1996-04-03 1999-08-10 Pressco Technology Inc. High-density solid-state lighting array for machine vision applications
EP1236634A1 (de) * 2001-02-20 2002-09-04 Digital Image Research Limited Verfahren und Vorrichtung zur Feststellung des Zustandes eines Gleises

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5936353A (en) * 1996-04-03 1999-08-10 Pressco Technology Inc. High-density solid-state lighting array for machine vision applications
EP1236634A1 (de) * 2001-02-20 2002-09-04 Digital Image Research Limited Verfahren und Vorrichtung zur Feststellung des Zustandes eines Gleises

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011093470A (ja) * 2009-10-30 2011-05-12 Kyushu Railway Co 軌道検測のための検出器ユニット
EP2463175A3 (de) * 2010-12-13 2012-08-15 AIT Austrian Institute of Technology GmbH Verfahren zum Auffinden von Oberflächenfehlern
CN103738356A (zh) * 2013-12-20 2014-04-23 河北汉光重工有限责任公司 高速列车轮轨横向位移检测模块
AT14280U1 (de) * 2014-03-17 2015-07-15 Plasser & Theurer Export Von Bahnbaumaschinen Gmbh Vorrichtung zum Messen der Lage von Schienen eines Gleises
WO2015197206A1 (de) * 2014-06-25 2015-12-30 Bombardier Transportation Gmbh Vorrichtung und verfahren zur bestimmung mindestens einer eigenschaft eines gleises für ein schienenfahrzeug sowie schienenfahrzeug
EP3088274A1 (de) * 2015-04-24 2016-11-02 VolkerRail Nederland BV Videodetailbild der gleislage
EP3088274B1 (de) 2015-04-24 2020-06-17 VolkerRail Nederland BV Videodetailbild der gleislage
EP3736194A1 (de) * 2015-04-24 2020-11-11 VolkerRail Nederland BV Videoübersichtsbild der gleislage
JP2017132416A (ja) * 2016-01-29 2017-08-03 大鉄工業株式会社 レール監視装置

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