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
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)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB5278975 | 1975-12-24 | ||
| 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 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| FI763659A true FI763659A (US06486227-20021126-C00005.png) | 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)
Families Citing this family (29)
| 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 |
| LT2577890T (lt) | 2010-05-27 | 2019-05-27 | Exfo Inc. | Daugybinio rinkimo otdr būdas ir įtaisas |
| 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)
| 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 |
-
1975
- 1975-12-24 GB GB52789/75A patent/GB1517768A/en not_active Expired
-
1976
- 1976-12-16 DE DE19762656911 patent/DE2656911A1/de active Granted
- 1976-12-17 AT AT0938676A patent/AT373696B/de not_active IP Right Cessation
- 1976-12-20 US US05/752,192 patent/US4104582A/en not_active Expired - Lifetime
- 1976-12-20 CH CH1604676A patent/CH612011A5/xx not_active IP Right Cessation
- 1976-12-20 DK DK573376A patent/DK148270C/da not_active IP Right Cessation
- 1976-12-21 FI FI763659A patent/FI59881C/fi not_active IP Right Cessation
- 1976-12-21 NO NO764320A patent/NO144721C/no unknown
- 1976-12-22 SE SE7614480A patent/SE414838B/xx not_active IP Right Cessation
- 1976-12-23 FR FR7638840A patent/FR2336688A1/fr active Granted
- 1976-12-23 CA CA76268622A patent/CA1048605A/en not_active Expired
- 1976-12-23 NL NL7614350A patent/NL7614350A/xx not_active Application Discontinuation
- 1976-12-23 BR BR7608676A patent/BR7608676A/pt unknown
- 1976-12-23 IT IT30843/76A patent/IT1074097B/it active
- 1976-12-23 DD DD7600196586A patent/DD127763A5/xx unknown
- 1976-12-24 JP JP51156130A patent/JPS5940270B2/ja not_active Expired
- 1976-12-24 BE BE2055554A patent/BE849834A/xx not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| CH612011A5 (US06486227-20021126-C00005.png) | 1979-06-29 |
| GB1517768A (en) | 1978-07-12 |
| DE2656911A1 (de) | 1977-08-18 |
| BE849834A (fr) | 1977-04-15 |
| FI59881B (fi) | 1981-06-30 |
| DE2656911C2 (US06486227-20021126-C00005.png) | 1987-07-30 |
| ATA938676A (de) | 1983-06-15 |
| NL7614350A (nl) | 1977-06-28 |
| BR7608676A (pt) | 1978-01-03 |
| NO764320L (US06486227-20021126-C00005.png) | 1977-06-27 |
| NO144721B (no) | 1981-07-13 |
| SE414838B (sv) | 1980-08-18 |
| AT373696B (de) | 1984-02-10 |
| FI59881C (fi) | 1981-10-12 |
| FR2336688B1 (US06486227-20021126-C00005.png) | 1981-06-12 |
| IT1074097B (it) | 1985-04-17 |
| JPS52101443A (en) | 1977-08-25 |
| SE7614480L (sv) | 1977-06-25 |
| DK573376A (da) | 1977-06-25 |
| US4104582A (en) | 1978-08-01 |
| FR2336688A1 (fr) | 1977-07-22 |
| DK148270C (da) | 1985-10-28 |
| NO144721C (no) | 1981-10-21 |
| CA1048605A (en) | 1979-02-13 |
| DK148270B (da) | 1985-05-20 |
| JPS5940270B2 (ja) | 1984-09-28 |
| DD127763A5 (de) | 1977-10-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MM | Patent lapsed | ||
| MM | Patent lapsed |
Owner name: A/S E. RASMUSSEN |