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公开(公告)号：AU2015372442B2
公开(公告)日：2020-10-22
申请号：AU2015372442
申请日：2015-12-23
Applicant: TECH RESOURCES PTY LTD
Inventor： HAY SID , CRAWFORD PETER , NIEUWOUDT IZAK
Abstract: A system (10) for detecting the presence of a rail end in a rail (18) of a railway track (20) includes a support structure (12) mountable to a component (14) of a rail vehicle (16). At least one magnetic field generator (22) is carried by the support structure (12) to generate a remanent magnetic field in the rail (18). A sensor arrangement (24) is carried by the support structure (12) in spaced relationship to the magnetic field generator (22) to detect magnetic flux leakage associated with the remanent magnetic field. The sensor arrangement (24) includes at least one pair of longitudinally spaced sensors, each sensor generating a measured signal based on the magnetic flux leakage detected by that sensor. A signal processing module (40) is responsive to the measured signals to calculate a differential signal from the measured signals of the sensors of the at least one pair of sensors. The differential signal is indicative of the presence of a rail end in the rail (18).
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公开(公告)号：CA2255001C
公开(公告)日：2005-06-28
申请号：CA2255001
申请日：1997-05-16
Applicant: TECH RESOURCES PTY LTD
Inventor： STREET ROBERT , VANSELOW ROBERT GORDON , HAY SID
Abstract: A method and apparatus for high speed magnetic detection of surface fatigue cracks in railway rails. The magnetic material of the rail is magnetised by touch magnetisation using a permanent magnet (31), leaving a remanent magnetic field. A sensor head (30, 50) having a plurality of Hall effect sensors (32) senses stray flux generated in the vicinity of surface fatigue in the rail head by the remanent magnetic field. The sensor head (30, 50) may incorporate a proximity sensor (60) to compensate for variations in sensor height. The apparatus may be mounted on a conventional track recording vehicle (TRV) for use in routinely monitoring the surface fatigue seventies in rail along a railway.
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公开(公告)号：CA2255001A1
公开(公告)日：1997-11-27
申请号：CA2255001
申请日：1997-05-16
Applicant: TECH RESOURCES PTY LTD
Inventor： HAY SID , VANSELOW ROBERT GORDON , STREET ROBERT
Abstract: A method and apparatus for high speed magnetic detection of surface fatigue cracks in railway rails. The magnetic material of the rail is magnetised by touch magnetisation using a permanent magnet (31), leaving a remanent magnetic field. A sensor head (30, 50) having a plurality of Hall effect sensors (32) senses stray flux generated in the vicinity of surface fatigue in the rail head by the remanent magnetic field. The sensor head (30, 50) may incorporate a proximity sensor (60) to compensate for variations in sensor height. The apparatus may be mounted on a conventional track recording vehicle (TRV) for use in routinely monitoring the surface fatigue severities in rail along a railway.
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公开(公告)号：CA2971075A1
公开(公告)日：2016-06-30
申请号：CA2971075
申请日：2015-12-23
Applicant: TECH RESOURCES PTY LTD
Inventor： HAY SID , CRAWFORD PETER , NIEUWOUDT IZAK
Abstract: A system (10) for detecting the presence of a rail end in a rail (18) of a railway track (20) includes a support structure (12) mountable to a component (14) of a rail vehicle (16). At least one magnetic field generator (22) is carried by the support structure (12) to generate a remanent magnetic field in the rail (18). A sensor arrangement (24) is carried by the support structure (12) in spaced relationship to the magnetic field generator (22) to detect magnetic flux leakage associated with the remanent magnetic field. The sensor arrangement (24) includes at least one pair of longitudinally spaced sensors, each sensor generating a measured signal based on the magnetic flux leakage detected by that sensor. A signal processing module (40) is responsive to the measured signals to calculate a differential signal from the measured signals of the sensors of the at least one pair of sensors. The differential signal is indicative of the presence of a rail end in the rail (18).
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公开(公告)号：AU726888B2
公开(公告)日：2000-11-23
申请号：AU2686897
申请日：1997-05-16
Applicant: TECH RESOURCES PTY LTD
Inventor： HAY SID , STREET ROBERT , VANSELOW ROBERT GORDON
Abstract: A method and apparatus for high speed magnetic detection of surface fatigue cracks in railway rails. The magnetic material of the rail is magnetized by touch magnetization using a permanent magnet (31), leaving a remanent magnetic field. A sensor head (30, 50) having a plurality of Hall effect sensors (32) senses stray flux generated in the vicinity of surface fatigue in the rail head by the remanent magnetic field. The sensor head (30, 50) may incorporate a proximity sensor (60) to compensate for variations in sensor height. The apparatus may be mounted on a conventional track recording vehicle (TRV) for use in routinely monitoring the surface fatigue severities in rail along a railway.
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Patent Agency Ranking
公开(公告)号：ZA974197B
公开(公告)日：1997-12-10
申请号：ZA974197
申请日：1997-05-15
Applicant: TECH RESOURCES PTY LTD
Inventor： HAY SID , STREET ROBERT , VANSELOW ROBERT GORDON
Abstract: A method and apparatus for high speed magnetic detection of surface fatigue cracks in railway rails. The magnetic material of the rail is magnetized by touch magnetization using a permanent magnet (31), leaving a remanent magnetic field. A sensor head (30, 50) having a plurality of Hall effect sensors (32) senses stray flux generated in the vicinity of surface fatigue in the rail head by the remanent magnetic field. The sensor head (30, 50) may incorporate a proximity sensor (60) to compensate for variations in sensor height. The apparatus may be mounted on a conventional track recording vehicle (TRV) for use in routinely monitoring the surface fatigue severities in rail along a railway.
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公开(公告)号：AU2020273329A1
公开(公告)日：2020-12-17
申请号：AU2020273329
申请日：2020-11-19
Applicant: TECH RESOURCES PTY LTD
Inventor： HAY SID , CRAWFORD PETER , NIEUWOUDT IZAK
Abstract: A system 10 for detecting the presence of a rail end in a rail 18 of a railway track 20 includes a support structure 12 mountable to a component 14 of a rail vehicle 16. At least one magnetic field generator 22 is carried by the support structure 12 to generate a remanent magnetic field in the rail 18. A sensor arrangement 24 is carried by the support structure 12 in spaced relationship to the magnetic field generator 22 to detect magnetic flux leakage associated with the remanent magnetic field. The sensor arrangement 24 includes at least one pair of longitudinally spaced sensors, each sensor generating a measured signal based on the magnetic flux leakage detected by that sensor. A signal processing module 40 is responsive to the measured signals to calculate a differential signal from the measured signals of the sensors of the at least one pair of sensors. The differential signal is indicative of the presence of a rail end in the rail 18. Fig,.1 26~ -- 24 ...28 64 20 ---1 ' Fig, 2 44 ....
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公开(公告)号：AU2015372442A1
公开(公告)日：2017-06-08
申请号：AU2015372442
申请日：2015-12-23
Applicant: TECH RESOURCES PTY LTD
Inventor： HAY SID , CRAWFORD PETER , NIEUWOUDT IZAK
Abstract: A system (10) for detecting the presence of a rail end in a rail (18) of a railway track (20) includes a support structure (12) mountable to a component (14) of a rail vehicle (16). At least one magnetic field generator (22) is carried by the support structure (12) to generate a remanent magnetic field in the rail (18). A sensor arrangement (24) is carried by the support structure (12) in spaced relationship to the magnetic field generator (22) to detect magnetic flux leakage associated with the remanent magnetic field. The sensor arrangement (24) includes at least one pair of longitudinally spaced sensors, each sensor generating a measured signal based on the magnetic flux leakage detected by that sensor. A signal processing module (40) is responsive to the measured signals to calculate a differential signal from the measured signals of the sensors of the at least one pair of sensors. The differential signal is indicative of the presence of a rail end in the rail (18).
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公开(公告)号：ZA9704197B
公开(公告)日：1997-12-10
申请号：ZA9704197
申请日：1997-05-15
Applicant: TECH RESOURCES PTY LTD
Inventor： HAY SID , STREET ROBERT , VANSELOW ROBERT GORDON
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公开(公告)号：AU2686897A
公开(公告)日：1997-12-09
申请号：AU2686897
申请日：1997-05-16
Applicant: TECH RESOURCES PTY LTD
Inventor： HAY SID , STREET ROBERT , VANSELOW ROBERT GORDON
Abstract: A method and apparatus for high speed magnetic detection of surface fatigue cracks in railway rails. The magnetic material of the rail is magnetized by touch magnetization using a permanent magnet (31), leaving a remanent magnetic field. A sensor head (30, 50) having a plurality of Hall effect sensors (32) senses stray flux generated in the vicinity of surface fatigue in the rail head by the remanent magnetic field. The sensor head (30, 50) may incorporate a proximity sensor (60) to compensate for variations in sensor height. The apparatus may be mounted on a conventional track recording vehicle (TRV) for use in routinely monitoring the surface fatigue severities in rail along a railway.
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