WO2004074823A3 - Radar detection of surface discontinuities - Google Patents

Radar detection of surface discontinuities Download PDF

Info

Publication number
WO2004074823A3
WO2004074823A3 PCT/GB2004/000727 GB2004000727W WO2004074823A3 WO 2004074823 A3 WO2004074823 A3 WO 2004074823A3 GB 2004000727 W GB2004000727 W GB 2004000727W WO 2004074823 A3 WO2004074823 A3 WO 2004074823A3
Authority
WO
WIPO (PCT)
Prior art keywords
defects
expected
reflection
radiation
receive antenna
Prior art date
Application number
PCT/GB2004/000727
Other languages
French (fr)
Other versions
WO2004074823A2 (en
Inventor
Michael Robert Buchan Dunsmore
James Paul Watts
Original Assignee
Qinetiq Ltd
Michael Robert Buchan Dunsmore
James Paul Watts
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 Qinetiq Ltd, Michael Robert Buchan Dunsmore, James Paul Watts filed Critical Qinetiq Ltd
Publication of WO2004074823A2 publication Critical patent/WO2004074823A2/en
Publication of WO2004074823A3 publication Critical patent/WO2004074823A3/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L23/00—Control, warning, or like safety means along the route or between vehicles or vehicle trains
    • B61L23/04—Control, warning, or like safety means along the route or between vehicles or vehicle trains for monitoring the mechanical state of the route
    • B61L23/041—Obstacle detection
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L23/00—Control, warning, or like safety means along the route or between vehicles or vehicle trains
    • B61L23/04—Control, warning, or like safety means along the route or between vehicles or vehicle trains for monitoring the mechanical state of the route
    • B61L23/042—Track changes detection
    • B61L23/044—Broken rails
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L23/00—Control, warning, or like safety means along the route or between vehicles or vehicle trains
    • B61L23/04—Control, warning, or like safety means along the route or between vehicles or vehicle trains for monitoring the mechanical state of the route
    • B61L23/042—Track changes detection
    • B61L23/045—Rail wear
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N22/00—Investigating or analysing materials by the use of microwaves or radio waves, i.e. electromagnetic waves with a wavelength of one millimetre or more
    • G01N22/02—Investigating the presence of flaws
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/003—Bistatic radar systems; Multistatic radar systems
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/88—Radar or analogous systems specially adapted for specific applications
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/41—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00 using analysis of echo signal for target characterisation; Target signature; Target cross-section
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • G01S13/06—Systems determining position data of a target
    • G01S13/08—Systems for measuring distance only
    • G01S13/10—Systems for measuring distance only using transmission of interrupted, pulse modulated waves

Abstract

This invention relates to an apparatus and method for investigation of continuous conducting surfaces (16) to determine the presence or otherwise of defects therein. The invention has particular application to the high speed investigation of rail surfaces to locate potentially hazardous defects. A millimetre wave radar system (2) is provided to transmit short pulses of millimetre wave radiation toward the surface under test (16) such that most of the radiation would be reflected from a defect free surface in an expected reflection direction (24). At least one receive antenna (38) is disposed in the expected direction of reflection of the radiation and adapted to determine any changes in the reflection direction caused by surface variations associated with defects. The receive antenna is preferably located to one side of the expected reflected beam and the device looks for power changes caused by different reflection directions. Preferably the detected signals are processed to give an indication of the type of any defects detected.
PCT/GB2004/000727 2003-02-22 2004-02-23 Radar detection of surface discontinuities WO2004074823A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0304085.4 2003-02-22
GB0304085A GB2398946A (en) 2003-02-22 2003-02-22 Microwave radar detection of surface discontinuities

Publications (2)

Publication Number Publication Date
WO2004074823A2 WO2004074823A2 (en) 2004-09-02
WO2004074823A3 true WO2004074823A3 (en) 2004-10-28

Family

ID=9953493

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2004/000727 WO2004074823A2 (en) 2003-02-22 2004-02-23 Radar detection of surface discontinuities

Country Status (2)

Country Link
GB (1) GB2398946A (en)
WO (1) WO2004074823A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7341767B2 (en) 2019-07-23 2023-09-11 株式会社日立製作所 Train control system and train control method

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006026048A1 (en) * 2006-06-01 2007-12-20 Gbm Wiebe Gleisbaumaschinen Gmbh GPS-based, continuous track detection system with multi-sensor technology
FR2983591B1 (en) * 2011-12-02 2014-01-03 Dassault Aviat APPARATUS FOR CONTROLLING A SURFACE AND ASSOCIATED METHOD
JP6027338B2 (en) * 2012-05-16 2016-11-16 東日本旅客鉄道株式会社 Method for mounting undercar floor of trajectory inspection device system and trajectory inspection device system
GB201303324D0 (en) 2013-02-25 2013-04-10 Subterandt Ltd Passive detection of deformation under coatings
CN103744119B (en) * 2013-12-24 2016-08-17 桂林电子科技大学 The three-dimensional feature detection method in a kind of building body crack and system
BE1022851B1 (en) * 2015-03-20 2016-09-22 Ertms Solutions Verification of the operating status of a beacon
DE102015117788A1 (en) * 2015-10-19 2017-04-20 Krohne Messtechnik Gmbh Method for detecting surface defects of rotating machine parts and corresponding detection device
GB201618378D0 (en) * 2016-10-31 2016-12-14 Heriot-Watt Univ Microwave sensor
US11565733B2 (en) 2017-02-23 2023-01-31 Auto Drive Solutions, S.L. Speed control and track change detection device suitable for railways
US10401278B2 (en) * 2017-06-07 2019-09-03 Saudi Arabian Oil Company Microwave horn antennas-based transducer system for CUI inspection without removing the insulation
CN108519596A (en) * 2018-03-05 2018-09-11 长沙理工大学 A kind of section of jurisdiction Hidden Fracture recognition methods based on match tracing and wavelet transformation
CN109212523B (en) * 2018-09-12 2021-02-23 重庆建工住宅建设有限公司 Method and equipment for nondestructive detection of pavement quality by radar
CN111141764A (en) * 2020-01-06 2020-05-12 上海市建筑科学研究院有限公司 Ground penetrating radar detection device and method for external thermal insulation system

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4344030A (en) * 1979-01-20 1982-08-10 Lambda Industrial Science Limited Remote detector of flaws in surfaces using micro-waves
SU1180765A1 (en) * 1984-04-04 1985-09-23 Белорусский Ордена Трудового Красного Знамени Политехнический Институт Device for detecting cracks
JPH0862338A (en) * 1994-08-25 1996-03-08 Central Japan Railway Co Non-destructive inspecting device for track banking part, and trolley therefor
EP0798569A1 (en) * 1996-03-29 1997-10-01 TOKIMEC Inc. Connected region extracting method and apparatus of B scope image
US20020033049A1 (en) * 2000-08-25 2002-03-21 Amini Bijan K. Detection of anomalies on railroad tracks
US6486685B1 (en) * 1997-11-21 2002-11-26 Sela Semiconductor Engineering Ltd. Remote resistivity measurement

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3924461A (en) * 1974-08-20 1975-12-09 Harris A Stover Monitoring system for detecting defective rails or road beds
GB1560591A (en) * 1976-03-22 1980-02-06 Innotec Oy Apparatus for observing an abrupt change in the radio frequency energy reflected or passed by timber
AT400988B (en) * 1983-11-07 1996-05-28 Strahlen Umweltforsch Gmbh METHOD FOR MEASURING WEATHER-CONDITIONS OF STATUS ON THE SURFACE OF TRAFFIC AREAS AND DEVICE FOR IMPLEMENTING THE METHOD
US5933014A (en) * 1994-11-23 1999-08-03 Fraunhofer Gesellschaft Zur Foerderung Process for detecting totally or partially hidden non-homogeneities by means of microwave radiation
US5859535A (en) * 1997-02-12 1999-01-12 The United States Of America As Represented By The Secretary Of The Navy System for determining size and location of defects in material by use of microwave radiation
CZ291486B6 (en) * 1999-04-13 2003-03-12 České Dráhy, Státní Organizace Method for determining fault in ballast and apparatus for making the same

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4344030A (en) * 1979-01-20 1982-08-10 Lambda Industrial Science Limited Remote detector of flaws in surfaces using micro-waves
SU1180765A1 (en) * 1984-04-04 1985-09-23 Белорусский Ордена Трудового Красного Знамени Политехнический Институт Device for detecting cracks
JPH0862338A (en) * 1994-08-25 1996-03-08 Central Japan Railway Co Non-destructive inspecting device for track banking part, and trolley therefor
EP0798569A1 (en) * 1996-03-29 1997-10-01 TOKIMEC Inc. Connected region extracting method and apparatus of B scope image
US6486685B1 (en) * 1997-11-21 2002-11-26 Sela Semiconductor Engineering Ltd. Remote resistivity measurement
US20020033049A1 (en) * 2000-08-25 2002-03-21 Amini Bijan K. Detection of anomalies on railroad tracks

Non-Patent Citations (9)

* Cited by examiner, † Cited by third party
Title
A. J. BAHR: "Microwave Eddy-Current Techniques for Quantitative Nondestructive Evaluation", EDDY-CURRENT CHARACTERIZATION OF MATERIALS AND STRUCTURES, ASTM STP 722, GEORG BIRNBAUM AND GEORG FREE (EDITORS), AMERICAN SOCIETY FOR TESTING AND MATERIALS, 1981, pages 311 - 331, XP009030734 *
DATABASE WPI Section EI Week 198616, Derwent World Patents Index; Class S03, AN 1986-105168, XP002279548 *
GLAY D ET AL: "Nondestructive detection of defects in materials using microwaves", SUBSURFACE SENSING TECHNOLOGIES AND APPLICATIONS II, SAN DIEGO, CA, USA, 31 JULY-3 AUG. 2000, vol. 4129, Proceedings of the SPIE - The International Society for Optical Engineering, 2000, SPIE-Int. Soc. Opt. Eng, USA, pages 22 - 30, XP002279545, ISSN: 0277-786X *
HAN H C ET AL: "Microwave imaging for features on metallic surface with synthetic aperture radar", ANTENNAS AND PROPAGATION SOCIETY INTERNATIONAL SYMPOSIUM, 1993. AP-S. DIGEST ANN ARBOR, MI, USA 28 JUNE-2 JULY 1993, NEW YORK, NY, USA,IEEE, 28 June 1993 (1993-06-28), pages 1922 - 1924, XP010133002, ISBN: 0-7803-1246-5 *
HRUBY RJ ET AL: "NOVEL NONDESTRUCTIVE, NONCONTACTING METHOD OF MEASURING THE DEPTH OF THIN SLITS AND CRACKS IN METALS", REV SCI INSTRUM MAY 1970, vol. 41, no. 5, May 1970 (1970-05-01), pages 679 - 83, XP002279546 *
PATENT ABSTRACTS OF JAPAN vol. 1996, no. 07 31 July 1996 (1996-07-31) *
SEKIGUCHI H ET AL: "Experimental crack depth estimation by EM waves", IEEE ANTENNAS AND PROPAGATION SOCIETY INTERNATIONAL SYMPOSIUM. 2002 DIGEST. APS. SAN ANTONIO, TX, JUNE 16 - 21, 2002, NEW YORK, NY: IEEE, US, vol. 1 OF 4, 16 June 2002 (2002-06-16), pages 534 - 537, XP010593194, ISBN: 0-7803-7330-8 *
TAH-HSIUNG CHU ET AL: "Microwave diversity imaging of perfectly conducting objects in the near-field region", IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, MARCH 1991, USA, vol. 39, no. 3, pages 480 - 487, XP002279547, ISSN: 0018-9480 *
VARADAN VASUNDARA V ET AL: "In situ non-contact, non-destructive, point to point microwave inspection system", PROCEEDINGS OF 1999 PROCESS CONTROL AND SENSORS FOR MANUFACTURING II;NEWPORT BEACH, CA, USA MAR 3-MAR 4 1999, vol. 3589, 3 March 1999 (1999-03-03), Proc SPIE Int Soc Opt Eng;Proceedings of SPIE - The International Society for Optical Engineering Mar 3-4 1999 Society of Photo-Optical Instrumentation Engineers, Bellingham, WA, USA, pages 65 - 72, XP002279544 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7341767B2 (en) 2019-07-23 2023-09-11 株式会社日立製作所 Train control system and train control method

Also Published As

Publication number Publication date
GB0304085D0 (en) 2003-03-26
WO2004074823A2 (en) 2004-09-02
GB2398946A (en) 2004-09-01

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