SE9401804D0 - Anordning för skydd av telekabel - Google Patents

Anordning för skydd av telekabel

Info

Publication number
SE9401804D0
SE9401804D0 SE9401804A SE9401804A SE9401804D0 SE 9401804 D0 SE9401804 D0 SE 9401804D0 SE 9401804 A SE9401804 A SE 9401804A SE 9401804 A SE9401804 A SE 9401804A SE 9401804 D0 SE9401804 D0 SE 9401804D0
Authority
SE
Sweden
Prior art keywords
signal
component
cables
unauthorised
penetration
Prior art date
Application number
SE9401804A
Other languages
English (en)
Other versions
SE9401804L (sv
SE502798C2 (sv
Inventor
Hans Serrander
John Thomson
Original Assignee
Telia Ab
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 Telia Ab filed Critical Telia Ab
Priority to SE9401804A priority Critical patent/SE502798C2/sv
Publication of SE9401804D0 publication Critical patent/SE9401804D0/sv
Publication of SE9401804L publication Critical patent/SE9401804L/sv
Publication of SE502798C2 publication Critical patent/SE502798C2/sv

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/18—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength
    • G08B13/181—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using active radiation detection systems
    • G08B13/183—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using active radiation detection systems by interruption of a radiation beam or barrier
    • G08B13/186—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using active radiation detection systems by interruption of a radiation beam or barrier using light guides, e.g. optical fibres
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L1/00—Measuring force or stress, in general
    • G01L1/24—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet
    • G01L1/242—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet the material being an optical fibre

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Burglar Alarm Systems (AREA)
  • Geophysics And Detection Of Objects (AREA)
SE9401804A 1994-05-26 1994-05-26 Anordning vid kabel eller kabelstråk för detektering av obehörig fysisk påverkan av kabeln eller intrång i utrymmen härbärgerande nämnda kabel SE502798C2 (sv)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SE9401804A SE502798C2 (sv) 1994-05-26 1994-05-26 Anordning vid kabel eller kabelstråk för detektering av obehörig fysisk påverkan av kabeln eller intrång i utrymmen härbärgerande nämnda kabel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9401804A SE502798C2 (sv) 1994-05-26 1994-05-26 Anordning vid kabel eller kabelstråk för detektering av obehörig fysisk påverkan av kabeln eller intrång i utrymmen härbärgerande nämnda kabel

Publications (3)

Publication Number Publication Date
SE9401804D0 true SE9401804D0 (sv) 1994-05-26
SE9401804L SE9401804L (sv) 1995-11-27
SE502798C2 SE502798C2 (sv) 1996-01-15

Family

ID=20394127

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9401804A SE502798C2 (sv) 1994-05-26 1994-05-26 Anordning vid kabel eller kabelstråk för detektering av obehörig fysisk påverkan av kabeln eller intrång i utrymmen härbärgerande nämnda kabel

Country Status (1)

Country Link
SE (1) SE502798C2 (sv)

Also Published As

Publication number Publication date
SE9401804L (sv) 1995-11-27
SE502798C2 (sv) 1996-01-15

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Legal Events

Date Code Title Description
NUG Patent has lapsed