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DK0477228T3 - Detektion og analyse af genstande ved hjælp af transmissionslinier - Google Patents

Detektion og analyse af genstande ved hjælp af transmissionslinier

Info

Publication number
DK0477228T3
DK0477228T3 DK90909157.1T DK90909157T DK0477228T3 DK 0477228 T3 DK0477228 T3 DK 0477228T3 DK 90909157 T DK90909157 T DK 90909157T DK 0477228 T3 DK0477228 T3 DK 0477228T3
Authority
DK
Denmark
Prior art keywords
transmission line
discontinuity
signal
analysis
objects
Prior art date
Application number
DK90909157.1T
Other languages
English (en)
Inventor
Gordon Kenneth Andrew Oswald
Per Arne Vincent Utsi
Elizabeth Anne Orme
Thomas William John Lawrence
Original Assignee
Cambridge Consultants
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 Cambridge Consultants filed Critical Cambridge Consultants
Application granted granted Critical
Publication of DK0477228T3 publication Critical patent/DK0477228T3/da

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/22—Electrical actuation
    • G08B13/24—Electrical actuation by interference with electromagnetic field distribution
    • G08B13/2491—Intrusion detection systems, i.e. where the body of an intruder causes the interference with the electromagnetic field
    • G08B13/2497—Intrusion detection systems, i.e. where the body of an intruder causes the interference with the electromagnetic field using transmission lines, e.g. cable
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
    • G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
    • G01R27/04—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant in circuits having distributed constants, e.g. having very long conductors or involving high frequencies
    • G01R27/06—Measuring reflection coefficients; Measuring standing-wave ratio
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/08—Locating faults in cables, transmission lines, or networks
    • G01R31/11—Locating faults in cables, transmission lines, or networks using pulse reflection methods

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Measurement Of Resistance Or Impedance (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)
  • Locating Faults (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Electrophonic Musical Instruments (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
DK90909157.1T 1989-06-15 1990-06-15 Detektion og analyse af genstande ved hjælp af transmissionslinier DK0477228T3 (da)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB898913720A GB8913720D0 (en) 1989-06-15 1989-06-15 Musical instrument based on tdr tactile sensor

Publications (1)

Publication Number Publication Date
DK0477228T3 true DK0477228T3 (da) 1995-11-13

Family

ID=10658456

Family Applications (1)

Application Number Title Priority Date Filing Date
DK90909157.1T DK0477228T3 (da) 1989-06-15 1990-06-15 Detektion og analyse af genstande ved hjælp af transmissionslinier

Country Status (8)

Country Link
EP (1) EP0477228B1 (da)
JP (1) JP2614144B2 (da)
AT (1) ATE127932T1 (da)
DE (1) DE69022418T2 (da)
DK (1) DK0477228T3 (da)
ES (1) ES2077068T3 (da)
GB (1) GB8913720D0 (da)
WO (1) WO1990015998A1 (da)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5610611A (en) * 1994-12-19 1997-03-11 The Regents Of The University Of California High accuracy electronic material level sensor
DE10048741C1 (de) * 2000-09-29 2002-01-10 Siemens Ag Verfahren und Vorrichtung zur Leitungsdiagnose eines Bussystems
US6574311B1 (en) * 2001-02-23 2003-06-03 Tollgrade Communications, Inc. Apparatus and method for detecting a bridged tap and/or an end-of-line of a conventional telephone line using delay-line time-domain reflectometry
JP6716791B2 (ja) * 2016-11-11 2020-07-01 レオニ カーベル ゲーエムベーハー 導線を監視するための方法と測定装置
JP7186593B2 (ja) * 2018-12-05 2022-12-09 三菱電機株式会社 配管点検支援装置、配管点検支援方法、及び、プログラム
GB2588755B (en) * 2019-10-25 2021-10-27 British Telecomm Methods and systems for characterising impedance discontinuities on electrical transmission lines

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4005363A (en) * 1974-10-22 1977-01-25 The United States Of America As Represented By The Secretary Of The Air Force Range resolving ground line sensor
GB1537748A (en) * 1977-08-16 1979-01-04 Standard Telephones Cables Ltd Intruder alarm systems
US4208626A (en) * 1978-03-06 1980-06-17 Bunker Ramo Corporation Precision timing source for multiple rate sampling of high-speed waveforms
CH649847A5 (en) * 1979-05-04 1985-06-14 Bbc Brown Boveri & Cie Method for fault location in an electrical line
JPS6228426A (ja) * 1985-07-25 1987-02-06 カネボウ綿糸株式会社 複合精紡糸及びその製造方法
DE3533479A1 (de) * 1985-09-19 1987-03-26 Seba Mess Ortungstech Verfahren zum ueberwachen eines objektes mit hilfe einer signalleitung sowie impuls-messgeraet zur durchfuehrung dieses verfahrens
US4797621A (en) * 1987-07-08 1989-01-10 Midwesco, Inc. Leak detector and locator utilizing time domain reflectometry and sampling techniques

Also Published As

Publication number Publication date
JPH04506255A (ja) 1992-10-29
EP0477228A1 (en) 1992-04-01
JP2614144B2 (ja) 1997-05-28
DE69022418D1 (de) 1995-10-19
EP0477228B1 (en) 1995-09-13
ATE127932T1 (de) 1995-09-15
ES2077068T3 (es) 1995-11-16
DE69022418T2 (de) 1996-03-07
GB8913720D0 (en) 1989-08-02
WO1990015998A1 (en) 1990-12-27

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