FR2319135A1 - Location of faults in ski lift safety line - is performed by comparing recorded reference and sampled signals derived from line input pulses - Google Patents

Location of faults in ski lift safety line - is performed by comparing recorded reference and sampled signals derived from line input pulses

Info

Publication number
FR2319135A1
FR2319135A1 FR7524445A FR7524445A FR2319135A1 FR 2319135 A1 FR2319135 A1 FR 2319135A1 FR 7524445 A FR7524445 A FR 7524445A FR 7524445 A FR7524445 A FR 7524445A FR 2319135 A1 FR2319135 A1 FR 2319135A1
Authority
FR
France
Prior art keywords
faults
line
location
signals derived
input pulses
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
FR7524445A
Other languages
French (fr)
Other versions
FR2319135B1 (en
Inventor
Gerard Barre
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
METRAPLAN SPAA
Original Assignee
METRAPLAN SPAA
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 METRAPLAN SPAA filed Critical METRAPLAN SPAA
Priority to FR7524445A priority Critical patent/FR2319135A1/en
Publication of FR2319135A1 publication Critical patent/FR2319135A1/en
Application granted granted Critical
Publication of FR2319135B1 publication Critical patent/FR2319135B1/fr
Granted legal-status Critical Current

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)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
  • Protection Of Static Devices (AREA)

Abstract

Faults in safety lines for ski lifts are located by a galvanometer in a current measuring circuit. Difficulties of localising faults is overcome by applying a voltage to the line and comparing the results with a fault free response. A flip flop (9) synchronises a clock (8) and pulse (11) generator outputs for amplification (12) and application to a safety line. The signals from gate (10) are counted (14) till they reach the number of points analysed. They are compared (17) with pulses counted (15) from a comparator (16) on the graphic recorder. The outputs of line drive sampling circuits, controlled by a sampling signal (Ech) from a monostable (18), govern writing and sample processing.
FR7524445A 1975-07-22 1975-07-22 Location of faults in ski lift safety line - is performed by comparing recorded reference and sampled signals derived from line input pulses Granted FR2319135A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7524445A FR2319135A1 (en) 1975-07-22 1975-07-22 Location of faults in ski lift safety line - is performed by comparing recorded reference and sampled signals derived from line input pulses

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7524445A FR2319135A1 (en) 1975-07-22 1975-07-22 Location of faults in ski lift safety line - is performed by comparing recorded reference and sampled signals derived from line input pulses

Publications (2)

Publication Number Publication Date
FR2319135A1 true FR2319135A1 (en) 1977-02-18
FR2319135B1 FR2319135B1 (en) 1981-05-08

Family

ID=9158796

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7524445A Granted FR2319135A1 (en) 1975-07-22 1975-07-22 Location of faults in ski lift safety line - is performed by comparing recorded reference and sampled signals derived from line input pulses

Country Status (1)

Country Link
FR (1) FR2319135A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0006005A1 (en) * 1978-05-31 1979-12-12 BICC Limited Apparatus and method for locating faults in electric cables
EP0062538A1 (en) * 1981-04-07 1982-10-13 BICC Public Limited Company Apparatus for locating faults in electric cables
CN114884054A (en) * 2022-05-18 2022-08-09 武汉珩链云信息科技有限公司 Urban intelligent traffic emergency monitoring, regulation and control management system based on Internet of things

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0006005A1 (en) * 1978-05-31 1979-12-12 BICC Limited Apparatus and method for locating faults in electric cables
DE2953266A1 (en) * 1978-05-31 1980-11-27 Bicc Ltd METHOD AND DEVICE FOR DETERMINING AND LOCALIZING FAULTS IN ELECTRICAL CABLES
US4475079A (en) * 1978-05-31 1984-10-02 Bicc Public Limited Company Apparatus for locating faults in electric cables
EP0062538A1 (en) * 1981-04-07 1982-10-13 BICC Public Limited Company Apparatus for locating faults in electric cables
CN114884054A (en) * 2022-05-18 2022-08-09 武汉珩链云信息科技有限公司 Urban intelligent traffic emergency monitoring, regulation and control management system based on Internet of things

Also Published As

Publication number Publication date
FR2319135B1 (en) 1981-05-08

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Legal Events

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