WO2004008067A1 - Inspection de vehicules ferroviaires - Google Patents

Inspection de vehicules ferroviaires Download PDF

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Publication number
WO2004008067A1
WO2004008067A1 PCT/GB2003/002694 GB0302694W WO2004008067A1 WO 2004008067 A1 WO2004008067 A1 WO 2004008067A1 GB 0302694 W GB0302694 W GB 0302694W WO 2004008067 A1 WO2004008067 A1 WO 2004008067A1
Authority
WO
WIPO (PCT)
Prior art keywords
box
camera
light source
rails
detector
Prior art date
Application number
PCT/GB2003/002694
Other languages
English (en)
Inventor
Martin John Bone
Michael James Crosby
Clive Hannaford
Christopher John Edward Hoskin
Original Assignee
Aea Technology Plc
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 Aea Technology Plc filed Critical Aea Technology Plc
Priority to AU2003246903A priority Critical patent/AU2003246903A1/en
Publication of WO2004008067A1 publication Critical patent/WO2004008067A1/fr

Links

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
    • B61K9/12—Measuring or surveying wheel-rims
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures

Definitions

  • This invention relates to an apparatus for the inspection of railway vehicles by means of optical sensors, for example to monitor wear of wheel treads, and brake pads, or other aspects relating to maintenance.
  • an apparatus for inspection of railway vehicles comprising a light source and a camera located within a support box connected to the underside of the rails .
  • the box is preferably of similar size to a sleeper, and consequently installation is very considerably simplified. No excavation of ballast from below the existing sleepers is required, so that the track does not have to be closed for a long period during the installation procedure; the box merely has to be slid under the rails and clamped or bolted to the underside of the rails. Having the optical components within the box and not protruding above it simplifies this operation, and also ensures they are well protected from damage during use. It may however be desirable to have other components that protrude slightly above the top of the box, for example a vehicle speed detector.
  • the light source and the camera are preferably attached to the box by vibration-suppressing resilient mountings.
  • the camera preferably incorporates means to perform image analysis.
  • the apparatus preferably also comprises a data analysis unit such as a computer, which may be installed in a cabinet adjacent to the track. Signals are transmitted between the data analysis unit and the components within the support box, for example using a cable.
  • the apparatus may comprise more than one such light source and more than one such camera.
  • one light source may be a laser, which in combination with a camera may be used to monitor the shape of a wheel tread, while another light source may be a flash, which in combination with a camera may be used to monitor the shape or thickness of brake pads, or other components that may be subject to wear such as electric current pickup shoes.
  • each optical component preferably is provided with an air knife to ensure all optical windows or lenses are kept clean.
  • the apparatus must also comprise a wheel detector to trigger operation of the light source and camera. To avoid problems from wear this wheel detector is preferably a non-contact detector.
  • the wheel detector may for example be a radar proximity detector, arranged to " detect radar signals reflected by the wheel.
  • An alternative wheel detector comprises a radar transmitter on one side of a rail and a radar detector on the other side, each arranged below the top of the rail, so that transmission from one to the other depends upon diffraction over the top of the rail, and is obstructed when a wheel is present.
  • the apparatus may also comprise other sensors, for example a vibration sensor may be attached to the rail for example to detect the approach of a train.
  • a vibration sensor may also be used to detect repeated bangs due to wheel flats or out-of-round wheels, and for this purpose it would be preferable to provide vibration sensors on each of the rails, so such defects in any wheel can be detected.
  • the apparatus also comprises means to measure the speed of an approaching train, as this permits the time delay between detection of a wheel and triggering of the light source to be set to a suitable value.
  • Figure 1 shows a perspective view of an inspection apparatus
  • Figure 2 shows an end view of the support box of the apparatus of figure 1, partly broken away, on arrow A of figure 1;
  • Figure 3 shows an electronic circuit diagram of the inspection apparatus of figure 1.
  • an inspection apparatus 10 comprises a steel box 12 consisting of a trough 13 with sleeper plates 14 welded along each side; the box 12 may also include bulk heads (not shown) at intermediate positions along its length.
  • the box 12 is installed beneath the rails 16 on a railway track 18.
  • the track 18 is conventional, consisting of rails 16 attached by clips 20 to sleepers 22, with ballast 24 below and between the sleepers 22, so that before installing the box 12 it may be necessary to rake out some of the ballast 24 from between two adjacent sleepers 22.
  • the box 12 is then slid under the rails 16, a rubber plate 26 (shown in figure 2) is placed between each rail 16 and each sleeper plate 14, and clips 20 are used to secure the sleeper plates 14 to the rails 16 (these clips 20 being provided with electrical insulation where they contact the rails 16 so that the box 12 does not provide an electrical connection between the rails 16) .
  • the ballast 24 can then be repacked around the box 12.
  • At each end of the box 12 is attached an end plate 28.
  • the end plate 28 at one end defines an aperture 29 for an electrical cable 30 connecting components within the box 12 to other components of the apparatus 10 installed in a lineside cabinet 32.
  • the box 12 encloses electronic modules 34, camera modules 36, light source modules 38 and radar modules 40. These modules are all mounted onto the trough 13 by means of vibration-damping rubber mounts 42 (each mount consisting two aligned bolts connected together by a flexible rubber ring) . In addition a vibration sensor 44 is fixed to the underside of one rail 16, connected by a cable to one of the electronic modules 34.
  • the box 12 may also be provided with cover plates (not shown) with apertures for the cameras, light sources and radar modules. Such cover plates prevent ballast 24 or large items of rubbish falling into the box 12.
  • Each optical component e.g.
  • camera module 36 and light source module 38 has an air knife (not shown) arranged to keep the optical windows or lenses clean from dust and small items of litter or leaves.
  • the power supply and control signals for the components within the box 12 are supplied by the cable 30 to an input/output interface unit 50.
  • the interface unit 50 receives signals from a radar wheel-detector 40a and from the vibration detector 44, and also from a radar train speed detector 40b. It supplies control signals to lasers 38a and thereby to cameras 36a that are arranged to view wheels on each rail 16, one laser 38a and camera 36a for each rail 16.
  • the cameras 36a incorporate image recognition software, and provide data representing the recognized image to a network node 52.
  • the node 52 transmits data from several different sources along the cable 30 to a processor 54 within the lineside cabinet 32.
  • the interface 50 causes each laser 38a to provide a line scan across the wheel tread and the camera 36a to view this line.
  • the camera 36a is set up to look forwards (i.e. in the direction of train travel) along the track 18, and to take an image when the wheel is at a fixed distance beyond the box 12 (for example 300 mm) , and the time delay between detection of a wheel by the wheel detector 40a- and the operation of the camera 36a is set (by an integrated circuit 56) in accordance with the train speed as detected by the train speed radar 40b (as explained below) .
  • the box 12 also contains cameras 36b with associated flash units 38b (only one is shown in figure 3) , the flash units 38b being operated in a similar fashion to the lasers 38a but enabling the camera 36b to obtain an image of, for example, brake pads.
  • the programmable integrated circuit 56 is also enclosed in the lineside cabinet 32, and its primary role is to determine timings.
  • the integrated circuit 56 receives data signals from the train sensors (i.e. the vibration sensor 44, the radar speed sensor 40b and the wheel detector 40a) via the interface 50, determines the appropriate timings for operation of the cameras 36a and 36b and of the lasers 38a and the flash units 38b, and sends timing signals to these components via the interface unit 50.
  • the computer processor 54 is linked to a computer bus 58, and for example can store data as obtained by the cameras 36a and 36b in a data store 60 (such as a hard disk) . Data can also be transferred between the bus 58 and the integrated circuit 56 via sixteen optically isolated inputs 62 and sixteen optically isolated outputs 63.
  • the processor 54 is linked directly by a line 64 to the integrated circuit 56, so. that the processor 54 can set parameter values for use by the integrated circuit 56 in its determination of timings.
  • the processor 54 is also connected to a modem 66 so that the data from the cameras 36a and 36b (and indeed from other sensors such as the vibration sensors 44) can be transmitted to a remote station for example by telephone line.
  • the processor 54 provides high-level control over operation of the inspection apparatus 10, for example determining which image analysis program a camera 36 should follow, or adjusting the image analysis parameters.
  • the processor 54 can send control signals to the cameras 36 for this purpose via the bus 58 and the outputs 63, the control signals passing unaffected through the integrated circuit 56, and being directed by the interface unit 50 to the appropriate camera 36.
  • the cameras 36 can send data (for example identifying which image analysis program it is following) back to the processor 54 via the interface 50 and the integrated circuit 56, or via the node 52.
  • system control might be achieved in a different way from that described above, for example using analogue electronic circuits.
  • other sensors may be incorporated in the inspection apparatus 10, for example infrared sensors to detect any components (such as bearings) that are overheating, or an optical sensor to detect any component that is hanging below that train (such as loose cables) .

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)

Abstract

L'invention concerne un appareil (10) pour inspecter des véhicules ferroviaires comprenant au moins une source lumineuse (38) ainsi qu'une caméra (36) disposée de manière à obtenir une image d'au moins une partie du véhicule. La source lumineuse et la caméra sont situées à l'intérieur d'un boîtier support (12) relié au côté inférieur des rails (16). Ledit boîtier (12) présente une taille similaire à une traverse, de sorte que l'installation est simple. Chaque composant à l'intérieur du boîtier (12) est supporté par des montages (42) souples permettant la suppression des vibrations.
PCT/GB2003/002694 2002-07-16 2003-06-24 Inspection de vehicules ferroviaires WO2004008067A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2003246903A AU2003246903A1 (en) 2002-07-16 2003-06-24 Inspection of railway vehicles

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0216486A GB0216486D0 (en) 2002-07-16 2002-07-16 Inspection of railway vehicles
GB0216486.1 2002-07-16

Publications (1)

Publication Number Publication Date
WO2004008067A1 true WO2004008067A1 (fr) 2004-01-22

Family

ID=9940545

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2003/002694 WO2004008067A1 (fr) 2002-07-16 2003-06-24 Inspection de vehicules ferroviaires

Country Status (3)

Country Link
AU (1) AU2003246903A1 (fr)
GB (1) GB0216486D0 (fr)
WO (1) WO2004008067A1 (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1847819A2 (fr) * 2006-04-05 2007-10-24 Schenck Process GmbH Section de mesure sur un rail
WO2007135159A2 (fr) 2006-05-23 2007-11-29 Hegenscheidt-Mfd Gmbh & Co. Kg Dispositif de mesure permettant de déterminer l'état réel d'essieux
CN102880086A (zh) * 2012-10-22 2013-01-16 北京航空航天大学 一种控制列车轮对几何参数动态测量的装置和方法
CN102889861A (zh) * 2012-10-18 2013-01-23 北京航空航天大学 一种列车轮对几何参数动态测量装置
CN103481910A (zh) * 2013-09-29 2014-01-01 苏州华兴致远电子科技有限公司 列车零部件图像采集系统及列车零部件异常检测系统
CN105882683A (zh) * 2016-04-13 2016-08-24 北京康拓红外技术股份有限公司 基于机器视觉的铁路列车技术检查检测系统和方法
EP2647543B1 (fr) 2012-04-04 2017-03-01 voestalpine SIGNALING Siershahn GmbH Système de détection de caractéristiques de véhicules ferroviaires passant
WO2018046504A1 (fr) * 2016-09-07 2018-03-15 AuE Kassel GmbH Système et procédé d'acquisition de caractéristiques d'au moins une roue d'un véhicule ferroviaire
CN110632121A (zh) * 2018-06-05 2019-12-31 波音公司 用于轨道车车轴的动态高速无损评估
DE102022114034A1 (de) 2022-06-02 2023-12-07 Deutsche Bahn Aktiengesellschaft Überwachungseinheit und überwachungseinrichtung

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5636026A (en) * 1995-03-16 1997-06-03 International Electronic Machines Corporation Method and system for contactless measurement of railroad wheel characteristics
US5660470A (en) * 1996-02-06 1997-08-26 Southern Technologies Corp. Rail mounted scanner
US5793492A (en) * 1997-01-24 1998-08-11 Loram Maintenance Of Way, Inc. Wheel profile sensor
DE10060380A1 (de) * 2000-12-05 2002-06-13 Ge Harris Harmon Railway Techn Verfahren und Vorrichtung zur Heißläufer- und Festbremsortung

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5636026A (en) * 1995-03-16 1997-06-03 International Electronic Machines Corporation Method and system for contactless measurement of railroad wheel characteristics
US5660470A (en) * 1996-02-06 1997-08-26 Southern Technologies Corp. Rail mounted scanner
US5793492A (en) * 1997-01-24 1998-08-11 Loram Maintenance Of Way, Inc. Wheel profile sensor
DE10060380A1 (de) * 2000-12-05 2002-06-13 Ge Harris Harmon Railway Techn Verfahren und Vorrichtung zur Heißläufer- und Festbremsortung

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
WETZLER G R ET AL: "INNOVATIVE SENSORIK UND AUSWERTEVERFAHREN ZUR LOESUNG KOMPLEXER UEBERWACHUNGSAUFGABEN", SIGNAL + DRAHT, TELZLAFF VERLAG GMBH. DARMSTADT, DE, vol. 89, no. 6, 1 June 1997 (1997-06-01), pages 5 - 8, XP000779901, ISSN: 0037-4997 *

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1847819A2 (fr) * 2006-04-05 2007-10-24 Schenck Process GmbH Section de mesure sur un rail
EP1847819A3 (fr) * 2006-04-05 2007-11-07 Schenck Process GmbH Section de mesure sur un rail
WO2007135159A2 (fr) 2006-05-23 2007-11-29 Hegenscheidt-Mfd Gmbh & Co. Kg Dispositif de mesure permettant de déterminer l'état réel d'essieux
WO2007135159A3 (fr) * 2006-05-23 2008-01-17 Hegenscheidt Mfd Gmbh & Co Kg Dispositif de mesure permettant de déterminer l'état réel d'essieux
JP2009537837A (ja) * 2006-05-23 2009-10-29 ヘーゲンシャイト−エムエフデー ゲー・エム・ベー・ハー ウント コー カー・ゲー 輪軸の状態検出のための計測設備
US7952729B2 (en) 2006-05-23 2011-05-31 Hegenscheidt-Mfd Gmbh & Co. Kg Measuring instrument for determining the actual condition of wheel sets
KR101110881B1 (ko) * 2006-05-23 2012-02-29 헤겐샤이트-엠에프데 게엠베하 운트 코. 카게 윤축의 실제 상태를 검출하기 위한 측정장치
EP2647543B1 (fr) 2012-04-04 2017-03-01 voestalpine SIGNALING Siershahn GmbH Système de détection de caractéristiques de véhicules ferroviaires passant
CN102889861A (zh) * 2012-10-18 2013-01-23 北京航空航天大学 一种列车轮对几何参数动态测量装置
CN102880086A (zh) * 2012-10-22 2013-01-16 北京航空航天大学 一种控制列车轮对几何参数动态测量的装置和方法
CN103481910A (zh) * 2013-09-29 2014-01-01 苏州华兴致远电子科技有限公司 列车零部件图像采集系统及列车零部件异常检测系统
CN105882683A (zh) * 2016-04-13 2016-08-24 北京康拓红外技术股份有限公司 基于机器视觉的铁路列车技术检查检测系统和方法
CN105882683B (zh) * 2016-04-13 2018-04-17 北京康拓红外技术股份有限公司 基于机器视觉的铁路列车技术检查检测系统和方法
WO2018046504A1 (fr) * 2016-09-07 2018-03-15 AuE Kassel GmbH Système et procédé d'acquisition de caractéristiques d'au moins une roue d'un véhicule ferroviaire
EP3318839A1 (fr) * 2016-09-07 2018-05-09 AuE Kassel GmbH Système et procédé de détection de caractéristiques d'au moins une roue d'un véhicule ferroviaire
CN110632121A (zh) * 2018-06-05 2019-12-31 波音公司 用于轨道车车轴的动态高速无损评估
DE102022114034A1 (de) 2022-06-02 2023-12-07 Deutsche Bahn Aktiengesellschaft Überwachungseinheit und überwachungseinrichtung

Also Published As

Publication number Publication date
GB0216486D0 (en) 2002-08-21
AU2003246903A1 (en) 2004-02-02

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