FI763659A - - Google Patents

Info

Publication number
FI763659A
FI763659A FI763659A FI763659A FI763659A FI 763659 A FI763659 A FI 763659A FI 763659 A FI763659 A FI 763659A FI 763659 A FI763659 A FI 763659A FI 763659 A FI763659 A FI 763659A
Authority
FI
Finland
Application number
FI763659A
Other languages
Finnish (fi)
Other versions
FI59881B (fi
FI59881C (fi
Inventor
Ejvind Lambertsen
Original Assignee
Rasmussen As E
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 Rasmussen As E filed Critical Rasmussen As E
Publication of FI763659A publication Critical patent/FI763659A/fi
Publication of FI59881B publication Critical patent/FI59881B/fi
Application granted granted Critical
Publication of FI59881C publication Critical patent/FI59881C/fi

Links

Classifications

    • 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)
  • Locating Faults (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
FI763659A 1975-12-24 1976-12-21 Maottsystem foer lokalisering av ett staelle i en elektrisk ledning daer en impedansaendring saosom ett brott eller en kortslutning har skett FI59881C (fi)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB52789/75A GB1517768A (en) 1975-12-24 1975-12-24 System for localizing a spot along a conductor in which an impedance change such as a break or short circuit occurs
GB5278975 1975-12-24

Publications (3)

Publication Number Publication Date
FI763659A true FI763659A (xx) 1977-06-25
FI59881B FI59881B (fi) 1981-06-30
FI59881C FI59881C (fi) 1981-10-12

Family

ID=10465326

Family Applications (1)

Application Number Title Priority Date Filing Date
FI763659A FI59881C (fi) 1975-12-24 1976-12-21 Maottsystem foer lokalisering av ett staelle i en elektrisk ledning daer en impedansaendring saosom ett brott eller en kortslutning har skett

Country Status (17)

Country Link
US (1) US4104582A (xx)
JP (1) JPS5940270B2 (xx)
AT (1) AT373696B (xx)
BE (1) BE849834A (xx)
BR (1) BR7608676A (xx)
CA (1) CA1048605A (xx)
CH (1) CH612011A5 (xx)
DD (1) DD127763A5 (xx)
DE (1) DE2656911A1 (xx)
DK (1) DK148270C (xx)
FI (1) FI59881C (xx)
FR (1) FR2336688A1 (xx)
GB (1) GB1517768A (xx)
IT (1) IT1074097B (xx)
NL (1) NL7614350A (xx)
NO (1) NO144721C (xx)
SE (1) SE414838B (xx)

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3115200A1 (de) * 1981-04-15 1983-02-03 Philips Kommunikations Industrie AG, 8500 Nürnberg Verfahren zur messung von impulslaufzeiten, fehlerorten und daempfung auf kabeln und lichtwellenleitern
US4413229A (en) * 1981-06-02 1983-11-01 Grant William O Method and apparatus for remote indication of faults in coaxial cable R-F transmission systems
GB2121641B (en) * 1982-06-07 1986-03-26 Royce Glen Roberts Measuring pipe lengths
US4597183A (en) * 1983-02-24 1986-07-01 Standard Oil Company (Indiana) Methods and apparatus for measuring a length of cable suspending a well logging tool in a borehole
US4638244A (en) * 1984-10-22 1987-01-20 General Electric Company Ground connection monitor
US4721902A (en) * 1985-07-08 1988-01-26 Mts Systems Corporation Noise rejection in a sonic transducer
US4739276A (en) * 1986-06-12 1988-04-19 Maris Graube Method and apparatus for digital time domain reflectometry
US4797621A (en) * 1987-07-08 1989-01-10 Midwesco, Inc. Leak detector and locator utilizing time domain reflectometry and sampling techniques
US4887041A (en) * 1988-02-17 1989-12-12 University Of Connecticut Method and instrumentation for the detection, location and characterization of partial discharges and faults in electric power cables
US5155439A (en) * 1989-12-12 1992-10-13 Tektronix, Inc. Method of detecting and characterizing anomalies in a propagative medium
US5212453A (en) * 1990-08-03 1993-05-18 Imko Micromodultechnik Gmbh Pulse echo method and apparatus for measuring the moisture content of materials
US5121420A (en) * 1990-09-17 1992-06-09 Rolm Systems Automatic line defect detector
US5144250A (en) * 1990-09-27 1992-09-01 Rockwell International Corporation Power amplifier time domain reflectometer
US5311124A (en) * 1991-03-11 1994-05-10 Mts Systems Corporation Emulated analog output magnetostrictive position transducer with set point selection
US5134377A (en) * 1991-06-04 1992-07-28 W. L. Gore & Associates, Inc. TDR system and method for detecting leakage of a liquid
US5272439A (en) * 1992-02-21 1993-12-21 University Of Connecticut Method and apparatus for the detection and location of faults and partial discharges in shielded cables
US5521512A (en) * 1993-08-16 1996-05-28 The Penn State Research Foundation Time domain reflectometer using successively delayed test pulses and an interleaved sampling procedure
US7107203B1 (en) * 2000-09-06 2006-09-12 Quickturn Design Systems Inc. High speed software driven emulator comprised of a plurality of emulation processors with improved board-to-board interconnection cable length identification system
DE10141040B4 (de) 2001-08-22 2006-10-26 Texas Instruments Deutschland Gmbh Serielle Schnittstelleneinheit
US6862546B2 (en) * 2002-02-22 2005-03-01 Intel Corporation Integrated adjustable short-haul/long-haul time domain reflectometry
AT504212B1 (de) * 2007-01-29 2008-04-15 Bier Guenther Ing Verfahren zur ortung von rohrleitungsleckagen
FR2916557A1 (fr) * 2007-05-24 2008-11-28 Frederic Alexandre Glaubert Dispositif electronique de securite,servant a la surveillance et a la protection en continu et temps reel de tous types d'equipements informatiques et en particulier des ordinateurs portables et fixe.
GB2463890A (en) 2008-09-26 2010-03-31 Genesis Oil And Gas Consultant Method of Testing a Pipeline Cut
DK2577890T3 (da) 2010-05-27 2019-05-13 Exfo Inc Multi-registrerings-OTDR-fremgangsmåde og -indretning
WO2013163798A1 (en) * 2012-05-02 2013-11-07 Qualcomm Incorporated Cable length determination using variable-width pulses
GB2601921B (en) * 2016-03-02 2022-12-07 Fisher Rosemount Systems Inc Detecting and Locating Process Control Communication Line Faults from a Handheld Maintenance Tool
US10382312B2 (en) 2016-03-02 2019-08-13 Fisher-Rosemount Systems, Inc. Detecting and locating process control communication line faults from a handheld maintenance tool
US10101240B1 (en) 2017-04-27 2018-10-16 Viavi Solutions France SAS Optical time-domain reflectometer device including combined trace display
PL3666052T3 (pl) 2018-12-14 2021-09-13 Kverneland A/S Zbiornik do siewnika i siewnik

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3014215A (en) * 1945-11-19 1961-12-19 Westinghouse Electric Corp Electronic control system
US2602834A (en) * 1947-12-09 1952-07-08 John R A Leslie Method and means for locating faults in transmission lines
US2651752A (en) * 1948-01-07 1953-09-08 Tobe Deutschmann Corp Electrical fault finder
US3211997A (en) * 1960-01-13 1965-10-12 Nippon Electric Co Fault locating means for electric power transmission lines, having means for recording, reproducing and displaying transmitted and reflected signals
GB975600A (en) * 1961-09-07 1964-11-18 Standard Telephones Cables Ltd Apparatus for the determination of attenuation in waveguides
US3911358A (en) * 1969-05-21 1975-10-07 German Mikhailovich Shalyt Method of and device for determining the distance to a fault in a wire or cable line
US3647298A (en) * 1969-09-16 1972-03-07 Us Navy Pulse chirp laser ranging device
US3753086A (en) * 1970-12-09 1973-08-14 W Shoemaker Method and apparatus for locating and measuring wave guide discontinuities
DE2318424A1 (de) * 1973-04-12 1974-10-31 Heinrich C Kosmeier Vorrichtung zur ortung von kabelfehlern durch impulsreflexionsmessung

Also Published As

Publication number Publication date
IT1074097B (it) 1985-04-17
DK148270B (da) 1985-05-20
AT373696B (de) 1984-02-10
CH612011A5 (xx) 1979-06-29
ATA938676A (de) 1983-06-15
SE7614480L (sv) 1977-06-25
FR2336688A1 (fr) 1977-07-22
NO764320L (xx) 1977-06-27
BE849834A (fr) 1977-04-15
JPS5940270B2 (ja) 1984-09-28
FI59881B (fi) 1981-06-30
JPS52101443A (en) 1977-08-25
DK573376A (da) 1977-06-25
DD127763A5 (de) 1977-10-12
CA1048605A (en) 1979-02-13
GB1517768A (en) 1978-07-12
DE2656911C2 (xx) 1987-07-30
BR7608676A (pt) 1978-01-03
NL7614350A (nl) 1977-06-28
FR2336688B1 (xx) 1981-06-12
US4104582A (en) 1978-08-01
NO144721C (no) 1981-10-21
DE2656911A1 (de) 1977-08-18
SE414838B (sv) 1980-08-18
FI59881C (fi) 1981-10-12
NO144721B (no) 1981-07-13
DK148270C (da) 1985-10-28

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Legal Events

Date Code Title Description
MM Patent lapsed
MM Patent lapsed

Owner name: A/S E. RASMUSSEN