WO1997026517A1 - Indicateur d'alarme dans un equipement de protection utilisant la fibre optique - Google Patents

Indicateur d'alarme dans un equipement de protection utilisant la fibre optique Download PDF

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Publication number
WO1997026517A1
WO1997026517A1 PCT/SE1997/000073 SE9700073W WO9726517A1 WO 1997026517 A1 WO1997026517 A1 WO 1997026517A1 SE 9700073 W SE9700073 W SE 9700073W WO 9726517 A1 WO9726517 A1 WO 9726517A1
Authority
WO
WIPO (PCT)
Prior art keywords
optical fibre
structure detail
alarm
protecting equipment
fibre
Prior art date
Application number
PCT/SE1997/000073
Other languages
English (en)
Inventor
Lars Eriksson
Original Assignee
Gullmert, Jan
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 Gullmert, Jan filed Critical Gullmert, Jan
Publication of WO1997026517A1 publication Critical patent/WO1997026517A1/fr

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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

Definitions

  • Alarm indication in a protecting equipment using optic fiber.
  • the structural details which belongs to the protecting equipment can consist of a post, a wire, a rope, a cord, a net structure, a frame, an isolating material, a tube formation, a locking mechanism e.g. a lock plunger, different types of beams and profiles such as a flat profile, L-profile, T-profile or H-profile.
  • Different types of sheet units in planar, curved, arched or corrugated designs can also belong as structure details in a protecting equipment.
  • the structure details can be formed in suitable matching materials in order to increase the strength during damage and thus decrease the possibilities to break through a protecting equipment.
  • the structural details can be made of metal, wood, plastic, glass, concrete, silicates, isolation, ceramics and/or combinations or composite material of these. All structure details which are needed to make a protecting equipment can be built up by aid of one or several of components and material mentioned above. Sometimes a struc ⁇ ture detail alone forms a protecting equipment. As an ex ⁇ ample of this fact is when a wire for anchoring of a com ⁇ puter extends through the same.
  • the alarm When a protecting equipment which is provided with an alarm is attaced the alarm shall be put in function and frighten the thief and at the same time via an alarm central phone after the police.
  • the time in forcing e.g. a grating is the time the police have in arriving before the criminals have taken themselves into that place which is going to be pro ⁇ tected against encroach.
  • Different forms of alarm devices are used to alarm different protecting equipments.
  • An alarm can be started by registrating infra-red radiation, vibrations, light and/or of the fact that an electrical loop is broken during damage. All these types of alarm indicators can be bridged and/or be subjected to false alarm.
  • a sensor for infra-red radiation can be coverd by paint when the alarm is chut off during daytime. When this alarm is acti ⁇ vated during night time it does not function. A photocell can be avoided and gives in this way a rather bad alarm portection.
  • An electrical loop can be localized by aid of measuring instruments and be bridged so that an admittance can take place without starting the alarm.
  • the alarm systems mentioned above are often visible and easy to localize and manipulate. Therefore it is important that an alarm equipment can be hidden or if it is visible it can be anchored so that a manipulation cannot occur without starting tha alarm. Often it is very difficult to alarm a whole protecting equipment in using one alarm function which has an extension such as e.g. a wall, a fence, a grating, a door or the like using the methods of today. The region which is forced can in fact be unalarmed. Should the region nevertheless be provided by an alarm it can be localized and put out of action.
  • the optical fibre which can be equipped with a protecting cover can extend through channels, slots, cavities in different structure details and between these, e.g. between a bar and a sheet unit in a protecting equipment or a post and a tube in a grating.
  • protecting equipments are a display case, a door, a window, a wall, a grating, a fence.
  • the optical fibre can be drawn losely, wholly or partly fixed, hidden behind cover means or sealing materials. Is it not hidden it shall be anchored so that it cannot be hom without damaging arises on the fibre so that the alarm is started.
  • the optical fibre can run internally or in slots and cavities and be anchored in points with a tensioned line extension between the an ⁇ choring points. During deformation of these structure details the fibre breaks off owing to a too strong extension and the alarm is started. This occurs of course also during any damages.
  • weaker structure details such as e.g. in a wall structure with an isolation or a net formation between uprights in a fence the fibre can extend having closer formations in a net like pattern, where the meshes in the net are not greater than a small cavity of e.g. the size of a hand.
  • the optical fibre is hurt of either deformation or mechani ⁇ cal damage and the alarm is started.
  • Fig. 1 illustrates a first embodiment example of a structure detail which is included in a protect ⁇ ing equipment where the optical fibre can run anywhere in a slot, a cavity or channel. It can also be hidden behind a flange, a slot or in close connection to a corner.
  • Fig. 3 illustrates a third embodiment example of a structure detail in the form of an extruded pro- file in.metal or pasties which is included in the protecting equipment where the optical fibre runs either freely, localized or in different forms of slots.
  • Fig. 6 illustrates a sixth embodiment example of a structure detail in the form of a wire, a rope or an extruded profile having an optional cross section formation, where the optical fibre is embedded in the structure detail.
  • Fig. 7 illustrates a seventh embodiment example of a structure detail in the form of a fragile body which surrounds the optical fibre. This is an ⁇ chored somewhere in a shosen position in the protecting equipment.
  • Fig. 8 illustrates an eight embodiment example of the structure detail.
  • the invention shows in fig. l structure details l included in a protecting equipment e.g. a grating, in which an opti ⁇ cal fibre 3 can run anywhere in a slot, a cavity or a chan ⁇ nel 6.
  • the fibre 7 can also be located in connection with -a corner, behind a flange/slot or lie freely in the channel/slot 6.
  • Said channel can have an optional formation in cross section e.g. rounded, oval, - , H- , T-formed, chosen to in a best way be suited for its using range. It can also present a width which mainly corresponds with the thickness of the optical fibre 3,7 provided with or not provided with a mechanical protection cover.
  • the cavity, slot/channel 6 can be filled with a compound 13 e.g. an adhesive either in points or totally covering or also be covered by a permanent, glued, screwed, snap anchored or slot connented 8 cover 18, which can cover the fibre in points or totally.
  • the optical fibre 3,7 can also be totally or fixed or fixed in points along its longitudinal direction or be located freely.
  • the optical fibre can be coated with a sheltering layer 2 of plastic or another material.
  • Fig. 2 illustrates a structure detail 4, which is included in a protecting equipment, where thge optical fibre runs through a tube formation 5, which can be wholly or partly filled such as the slot/channel 6 in fig. l, hidden of its totally or partly surrounding walls.
  • the tube formation 5 can be e.g. a grating, an upright or a net formation included in the protecting equipment.
  • the optical fibre 3 can extend through the whole protecting equipment in e.g. a grating. An attack against an optional location of the whole protecting equipment then will start the alarm.
  • Fig. 3 shows how a structure detail in the form of an extruded profile 13 in metal or plastic can be provided with an optical fibre in a protecting equipment where the optical fibre runs either freely located 12 or in a bigger cavity 10.
  • the alarm is started if the profile is treated so that the fibre gets damaged.
  • the advantage having a freely positioned fibre 12 and in the cavity 10 is that it can rapidly be drawn through a protecting detail.
  • the fiber can also run in different forms of formations e.g. in a slot 9 which mainly corresponds with the thickness of the fibre. In this slot it can be glued or clamped along its total length or in points.
  • the fibre can also run in a cavity ll which has mainly the same diameter as the fibre in order to give a direct contact against the walls of the cavity which also occurs when the fibre is placed in the slot 9. During deformation of the profile 13 the same is extended so that it will break and the alarm is started.
  • Fig. 5 shows a structure detail 23 in a profile formation wieved in a cross section, where the optical fibre 21 is fixed in points by gluing, screwing, jamming in slots via at least one projection or a clamping means 22 to at least one point in the protecting equipment.
  • the fibre 21 is extended between the fixing points 22.
  • breakage arises of the fibre 21 owing to the extension when the profile is deformed and the alarm will start.
  • Fig. 6 shows a structure detail i the form of a longitu ⁇ dinal, strong body 26 e.g. a wire, a rope or an extruded profile having optional cross section, where the optical fibre 25 is embedded, glued or connected into the surrounding material 24 in the structure detail 26.
  • It can constitute the protecting equipment itself e.g. extend through expensive items in a shop, secure computers, cycles or other thief-attractive items and in this way make a theft difficult to perform.
  • the longitudinal body 26 is anchored in an element which is not easy to move. During attack against the longitudinal body the alarm is started, since the optical fibre 25 then is damaged.
  • Fig. 7 shows a frigile body 27 surrounding the optical fibre 28, which is fixed at a suitable location where a de ⁇ formation will be expected in a structure detail in the protecting equipment. During attack against the protecting equipment a breakage will occur on the frigile body 27 and in this way the optical fibre 28 is damaged so that the alarm will start.
  • the fragile body 27 is used where the risk of an attack using bending, breakage and hits are most common e.g. in locking mechanisms, electric striking-plate locks, hinges, different strengthenings in doors and window profiles and in sheet units.
  • this structure means 29 in the form of a flexible means which unloaded is connected to a running through sprig with a passing through fibre. During loading of the spring this is loosen from its contact against another connected fibre.
  • one fibre 30 is thus a fibre 30 which is connected to another fibre 33 so that the plant location of the two ends of the fibres 30 and 33 is achieved in one point 32.
  • the point 32 can e.g. consists of coverlike devie.
  • the structure detail 29 is included in a protecting devise and during attack against the same, e.g. a fence, the structure detail 29 is influenced such that one optical fibre 30 is separated from the other optical fibre 33, whereby the signal running in the fibre is interrupped and an alarm is started.
  • thet the fibre 30,33 extends not inter ⁇ rupped without contact areas through the structure detail 29 and the means 31. Instead a tool e.g. a cutting part in the point 32 influense the fibre so that the alarm is started.
  • a futher embodiment example of the invention consists of an optical fibre which runs through the protecting equipment in the form of a wall and/or a frame and ends its extension there.
  • a gap exists between a door sheet and/or a wall.
  • the optical fibre continues its extension after the gap in at least some part of the door sheet and/or the window frame and runs then back preferably to mainly the same location to the frame and/or the wall.
  • a sent out signal then leads through the fibre and can thereafter send the same over the gap and continue through the fibre in the door sheet and/or the window frame and thereafter return over the gap and then back to the frame and/or the wall and back to the receiver.
  • the signal has also run from a transmitter to a reciever.

Abstract

L'invention a trait à un équipement de protection pourvu d'une alarme activée par un fibre optique traversée par un signal, cette fibre traversant au moins un détail de la structure dans au moins un équipement de protection et, en cas de dommage subi, entraînant une atténuation du signal de manière à ce que l'alarme se déclenche.
PCT/SE1997/000073 1996-01-19 1997-01-17 Indicateur d'alarme dans un equipement de protection utilisant la fibre optique WO1997026517A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9600209A SE9600209D0 (sv) 1996-01-19 1996-01-19 Alarmanordning i en skyddsanordning med optisk fiber
SE9600209-2 1996-01-19

Publications (1)

Publication Number Publication Date
WO1997026517A1 true WO1997026517A1 (fr) 1997-07-24

Family

ID=20401092

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1997/000073 WO1997026517A1 (fr) 1996-01-19 1997-01-17 Indicateur d'alarme dans un equipement de protection utilisant la fibre optique

Country Status (2)

Country Link
SE (1) SE9600209D0 (fr)
WO (1) WO1997026517A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1182629A2 (fr) * 2000-08-11 2002-02-27 Alcatel Système de surveillance de l'entrée d'un bâtiment

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4307386A (en) * 1977-12-09 1981-12-22 Roderick Iain Davidson Security system and strip or strand incorporating fibre-optic wave guide means therefor
US4367460A (en) * 1979-10-17 1983-01-04 Henri Hodara Intrusion sensor using optic fiber
US4371869A (en) * 1977-09-28 1983-02-01 Fibun B.V. Fence or wall incorporating fibre-optic wave-guide
GB2194371A (en) * 1986-08-21 1988-03-02 Solicitor For The Affairs Of H Security grille
US4812810A (en) * 1988-01-25 1989-03-14 Whirlpool Corporation Fiber optic door sensor for a domestic appliance
US4922228A (en) * 1987-08-25 1990-05-01 Ispra Israel Products Research Co., Ltd. Railing
US5015842A (en) * 1989-06-01 1991-05-14 United Technologies Corporation High density fiber optic damage detection system
US5374821A (en) * 1993-06-30 1994-12-20 Martin Marietta Energy Systems, Inc. Elastomeric optical fiber sensors and method for detecting and measuring events occurring in elastic materials

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4371869A (en) * 1977-09-28 1983-02-01 Fibun B.V. Fence or wall incorporating fibre-optic wave-guide
US4307386A (en) * 1977-12-09 1981-12-22 Roderick Iain Davidson Security system and strip or strand incorporating fibre-optic wave guide means therefor
US4367460A (en) * 1979-10-17 1983-01-04 Henri Hodara Intrusion sensor using optic fiber
GB2194371A (en) * 1986-08-21 1988-03-02 Solicitor For The Affairs Of H Security grille
US4922228A (en) * 1987-08-25 1990-05-01 Ispra Israel Products Research Co., Ltd. Railing
US4812810A (en) * 1988-01-25 1989-03-14 Whirlpool Corporation Fiber optic door sensor for a domestic appliance
US5015842A (en) * 1989-06-01 1991-05-14 United Technologies Corporation High density fiber optic damage detection system
US5374821A (en) * 1993-06-30 1994-12-20 Martin Marietta Energy Systems, Inc. Elastomeric optical fiber sensors and method for detecting and measuring events occurring in elastic materials

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1182629A2 (fr) * 2000-08-11 2002-02-27 Alcatel Système de surveillance de l'entrée d'un bâtiment
EP1182629A3 (fr) * 2000-08-11 2004-02-04 Alcatel Système de surveillance de l'entrée d'un bâtiment

Also Published As

Publication number Publication date
SE9600209D0 (sv) 1996-01-19

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