EP0308737A1 - Clôture en fil signalant une intrusion - Google Patents

Clôture en fil signalant une intrusion Download PDF

Info

Publication number
EP0308737A1
EP0308737A1 EP88114716A EP88114716A EP0308737A1 EP 0308737 A1 EP0308737 A1 EP 0308737A1 EP 88114716 A EP88114716 A EP 88114716A EP 88114716 A EP88114716 A EP 88114716A EP 0308737 A1 EP0308737 A1 EP 0308737A1
Authority
EP
European Patent Office
Prior art keywords
barrier
wires
pressure
wire
edge
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.)
Withdrawn
Application number
EP88114716A
Other languages
German (de)
English (en)
Inventor
Federico Ciordinik
Michele Bellettati
Tiziano Rosignoli
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.)
CI KA RA SpA
Original Assignee
CI KA RA SpA
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 CI KA RA SpA filed Critical CI KA RA SpA
Publication of EP0308737A1 publication Critical patent/EP0308737A1/fr
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/02—Mechanical actuation
    • G08B13/12—Mechanical actuation by the breaking or disturbance of stretched cords or wires
    • G08B13/122—Mechanical actuation by the breaking or disturbance of stretched cords or wires for a perimeter fence
    • G08B13/124—Mechanical actuation by the breaking or disturbance of stretched cords or wires for a perimeter fence with the breaking or disturbance being optically detected, e.g. optical fibers in the perimeter fence

Definitions

  • This invention relates to an intrusion-warning wire fence formed, at least partly, by a plurality of barrier or fence wires substantially parallel to each other and stretched taut between two supports, while the distance between two adjacent wires is smaller than that required for permitting a person to pass therethrough.
  • the barrier wires may be substantially horizontal and may be stretched, particularly, between two poles or the like, or they may be substantially vertical and may be stretched, for example, between an upper beam and a lower beam, or the like.
  • the barrier wires may also be at an angle to either the horizontal or the vertical and be stretched between two poles or two beams.
  • wire By the term “wire”, according to the present invention, it is meant a wire or cable of any suitable material and of any cross sectional shape, either of single or multiple, or even tubular formation.
  • the invention aims to provide a fence of the type as specified above, so as to generate - by simple, reliable and economical means - a warning and/or alarm signal when two wires of the fence are intrusively spread apart, i.e. moved transversely away from each other, to obtain an opening permitting the passage of a person.
  • one or more sensor wires comprising each an optical conductor (optical fibre) and connected to a warning and/or alarm system which is activated when the optical conductor is either broken or compressed, are associated with at least a part of the barrier wires and at least a back-pressure edge, so as to be compressed against said back-pressure edge as a result of an increase in the tension of the associated barrier wire above its initial tension of installation, and to such an extent as to activate the warning and/or alarm system.
  • the sensor wire or wires are separate from the barrier wires and are passed between a stationary back-pressure edge and a movable pressure member which co-operates with the back-­pressure edge and is connected either directly or indirectly to an associated barrier wire, so as to be urged against the back-pressure edge and to be caused tocompress the sensor wire between the back-pressure edge and said pressure member in case of an increase in the tension of the barrier wire above its initial tension of installation.
  • the pressure member is fixed directly to the associated barrier wire and is slidably guided in the longitudinal direction of the barrier wire or it is mounted so as to be pivotable around a pivot axis transverse to the barrier wire.
  • the sensor wire or wires, or the back-pressure edges and the movable pressure member or members may be provided at only one or at both ends of the stretched barrier wires and, in case of more extensive lenghts of these wires, at one or more intermediate locations on them.
  • the respective slidable or pivotable pressure members for example fixed directly to the associated barrier wires, co-operate preferably at both sides with a back-pressure edge, while a sensor wire is passed at each side between the respective back-pressure edge and the pressure member.
  • the sensor wire(s), and/or the back-pressure edge(s), and the movable pressure member(s) are preferably accommodated within the supports between which the barrier wires are stretched, and/or within intermediate supports, for example within the hollow poles for the horizontal barrier wires.
  • the barrier wires may be constituted by any usual wires, made of any suitable material.
  • the barrier wires are constructed also as signalling wires, i.e. they comprise one or more electrical or optical conductors connected to a warning and/or alarm system which can be activated by said wire or wires being compressed.
  • the warning or alarm system is thus activated not only when two adjacent barrier wires are spread apart to open a passage, but also when a barrier wire is either bent or cut for the same purpose.
  • the sensor wires are coupled with at least some of the barrier wires and are constituted, for example, by one or more optical conductors incorporated in the barrier wires or arranged on the outer side thereof and stretched together with the same, while the barrier wires are passed with the respective sensor wires through holes provided in the hollow supports, and follow, within said supports, such a path that they are compressed against the hole edges acting as back-pressure edges, by the action of a transverse component of the tractive force exerted on the barrier wires.
  • the intrusion-­warning wire fence consists of a plurality of horizontal barrier or fence wires l, which are vertically spaced apart the one from the otherand stretched between two end supports or poles (not shown). Between said end supports or poles, the barrier wires 1 are passed through at least one intermediate box-type support or pole 2, by being caused to get into and out of aligned holes 3 provided in the side walls 102 of the intermediate pole 2. Within the pole 2, each barrier wire 1 is fixed by means of a bracket 4 to a pressure member 5 formed by two vertical platelets 105 and 205, which are spaced apart from each other by suitable spacers 6 and are connected by means of screws 7.
  • each pressure member 5 i.e. of both platelets 105, 205 composing it, have a fork-like configuration.
  • Each pressure member 5 is slidably guided horizontally in the longitudinal direction of the respective barrier wire l, by means of two vertical L-­shaped profiles 8 which by one of their flanges are fixed each to the inner face of a side wall of pole 2, while by their other flange thei are inserted between said two platelets 105, 205 of the slidable member 5, at the fork-­like ends thereof.
  • each pole 2 Arranged within each pole 2 are two sensor wires 9 comprising at least one optical conductor 10 (optical fibre) and connected to any suitable warning and/or alarm system (not shown) which is activated when one of the optical conductors 10 is either broken or compressed (squeezed) to such an extent as to reduce its conductivity below a given limit.
  • Each of these sensor wires 9 extends substantially vertically and is led - in proximity of each barrier wire 1 - from one side of the respective pressure member 5 to the opposite side thereof, by being passed between the two arms of the respective fork-like end of the pressure member and between the bottom of said fork and the edge of the flange of the respective L-shaped guide profile 8, that is inserted between the two platelets 105, 205 of the pressure member 5.
  • the construction and the arrangement are such as to obtain the following operation.
  • the pressure member 5 connected to each barrier wire l within the intermediate pole 2 is in an intermediate position wherein both sensor wires 9 are not compressed between said pressure member 5 and the respective back-pressure edge constituted by the inner free edge of the corresponding L-shaped guide profile 8, or they are not compressed with such a force as to cause the activation of the warning or alarm system.
  • the barrier wires l are so spaced apart the one from the other as to prevent the passage of a person.
  • two adjacent barrier wires 1 are spread apart, i.e.
  • the tension of these barrier wires 1 is then increased and the respective pressure members 5 are displaced or urged towards the back-pressure edge of one or the other L-shaped guide profile 8, thus compressing the optical conductor 10 in the respective sensor wire 9 to such an extent as to reduce the conductivity of said optical conductor 10 down to below the limit of activation of the warning and/or alarm system which, therefore, is activated and immediately signals the attempt of intrusion through the fence.
  • the assembly Upon ceasing of the spread apart displacement, and therefore of the additional tension of the two barrier wires 1, the assembly reverts to the rest condition, with no damage to the fence and to the sensor members thereof.
  • the barrier or fence wires l may be constituted by any normal wire or they may also contain at least one optical or electrical signalling conductor 11, connected as well to the warning and/or alarm system, which is activated when at least one of the barrier wires l is cut together with the respective signalling conductor 11.
  • the sensor wires 9 and possibily also the barrier wires 1 may be constituted by suitable optical conductors.
  • one of the pressure members 5′ is fulcrumed about the pivot 12 by means of an extension of its front platelet 105, while the other pressure member 5′ is fulcrumed about the same pivot 12 by means of an extension of its rear platelet 205′, so as to obtain a symmetrical and balanced construction, as shown in Fig. 6.
  • the embodiment according to Fig. 8 also substantially corresponds to the embodiment according to Figures l to 3, like or equivalent parts being designated by the same reference numerals.
  • the sensor wires 9, however, are not passed from the one to the other side of the slidable pressure member 5, but they extend vertically between the two platelets 105 and 205 thereof and are passed between a back-pressure edge 13 integral with the respective guide profile 8 and a pressure edge 14 integral with the pressure member 5.
  • the two edges 13 and 14 are opposite to each other and substantially horizontal and transverse to the corresponding sensor wire 9.
  • the two edges may be constructed as cutting edges, such as to even cause the severance of the sensor wire 9 when the tension in the respective barrier wire 1 increases beyond a predetermined limit.
  • the two opposite pressure edge 14 and back-pressure edge 13 are suitably rounded so as to only cause a corresponding compression of the sensor wire 9.
  • the box-type pole 2 is provided with a cap-­like cover 15 fitted on the top end of said pole 2.
  • Said cover 15 does not rest on the top edge of the pole 2 but is provided with a depending extension 16 which extends into the interior of the pole 2 and is formed with holes or slots 17 through which is passed a barrier wire 1 provided with at least one signalling optical conductor 11.
  • Said cover 15 rests on said wire 1 by means of the top edge of the holes or slots 17 of its depending extension 16.
  • the fence is formed by a plurality of barrier wires l each provided with an optical conductor 11 and formed, for example, by optical cables, as described previously with reference to Fig. 1.
  • barrier wires l are stretched horizontally between two end supports (not shown) and are passed through intermediate box-like poles 2 formed with corresponding holes 3 through their side walls 102.
  • the wires l are passed around stationary turnround members 18 so as to follow a path with stretches at an angle with respect to the side walls 102 of the pole 2.
  • the edges of the holes 3 in the sidewalls 102 of a pole 2 constitute the back-pressure edges co-operating with the barrier wires 1 and the optical conductors 11 incorporated therein.
  • the wires l, 11 constitute simultaneously both the barrier wires proper and the sensor wires. In fact, when two adjacent barrier wires 1 are vertically spread apart to form an opening to pass through the fence, the optical conductors 11 of these wires 1 are pressed against either the lower or the upper edge of the respective holes 3, so as to activate the warning and/or alarm system.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fencing (AREA)
  • Burglar Alarm Systems (AREA)
EP88114716A 1987-09-24 1988-09-09 Clôture en fil signalant une intrusion Withdrawn EP0308737A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT1254487 1987-09-24
IT8712544A IT1213907B (it) 1987-09-24 1987-09-24 Recinzione anti effrazione

Publications (1)

Publication Number Publication Date
EP0308737A1 true EP0308737A1 (fr) 1989-03-29

Family

ID=11141402

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88114716A Withdrawn EP0308737A1 (fr) 1987-09-24 1988-09-09 Clôture en fil signalant une intrusion

Country Status (2)

Country Link
EP (1) EP0308737A1 (fr)
IT (1) IT1213907B (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0332900A1 (fr) * 1988-03-02 1989-09-20 Ci.Ka.Ra. S.R.L. Interrupteur à fibre optique et clôture antieffraction munie d'un tel interrupteur
GB2258935A (en) * 1991-08-21 1993-02-24 Trans Security Systems Intrusion detecting apparatus
US5592149A (en) * 1992-07-21 1997-01-07 Alizi; Uri Security fence
EP1147499A1 (fr) * 1998-12-03 2001-10-24 Gryffin Pty. Ltd. Capteurs de deviation
WO2002065417A1 (fr) * 2001-02-13 2002-08-22 Future Fibre Technologies Pty Ltd Systemes de protection perimetrique et procede de surveillance de la protection perimetrique
WO2005101340A1 (fr) * 2004-04-13 2005-10-27 Doni, Roberto Dispositif anti-intrusion pour barrieres ou articles similaires
WO2006048356A1 (fr) * 2004-11-03 2006-05-11 Def S.P.A. Dispositif antiintrusion pour clotures ou analogues
FR2964232A1 (fr) * 2010-09-01 2012-03-02 Commissariat Energie Atomique Systeme de detection d'intrusion et procede de montage d'un tel systeme

Citations (3)

* 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
EP0196510A1 (fr) * 1985-03-27 1986-10-08 CI.KA.RA. S.p.A. Clôture en fil métallique avertissant des intrusions
EP0246487A2 (fr) * 1986-05-20 1987-11-25 Magal Security Systems, Ltd. Système de clôture de sécurité

Patent Citations (3)

* 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
EP0196510A1 (fr) * 1985-03-27 1986-10-08 CI.KA.RA. S.p.A. Clôture en fil métallique avertissant des intrusions
EP0246487A2 (fr) * 1986-05-20 1987-11-25 Magal Security Systems, Ltd. Système de clôture de sécurité

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0332900A1 (fr) * 1988-03-02 1989-09-20 Ci.Ka.Ra. S.R.L. Interrupteur à fibre optique et clôture antieffraction munie d'un tel interrupteur
GB2258935A (en) * 1991-08-21 1993-02-24 Trans Security Systems Intrusion detecting apparatus
GB2258935B (en) * 1991-08-21 1995-08-16 Trans Security Systems Intrusion detecting apparatus
US5592149A (en) * 1992-07-21 1997-01-07 Alizi; Uri Security fence
EP1147499A1 (fr) * 1998-12-03 2001-10-24 Gryffin Pty. Ltd. Capteurs de deviation
EP1147499A4 (fr) * 1998-12-03 2004-04-07 Gryffin Pty Ltd Capteurs de deviation
WO2002065417A1 (fr) * 2001-02-13 2002-08-22 Future Fibre Technologies Pty Ltd Systemes de protection perimetrique et procede de surveillance de la protection perimetrique
WO2005101340A1 (fr) * 2004-04-13 2005-10-27 Doni, Roberto Dispositif anti-intrusion pour barrieres ou articles similaires
WO2006048356A1 (fr) * 2004-11-03 2006-05-11 Def S.P.A. Dispositif antiintrusion pour clotures ou analogues
FR2964232A1 (fr) * 2010-09-01 2012-03-02 Commissariat Energie Atomique Systeme de detection d'intrusion et procede de montage d'un tel systeme
WO2012028802A1 (fr) * 2010-09-01 2012-03-08 Commissariat à l'énergie atomique et aux énergies alternatives Système de détection d'intrusion et procédé de montage d'un tel système

Also Published As

Publication number Publication date
IT8712544A0 (it) 1987-09-24
IT1213907B (it) 1990-01-05

Similar Documents

Publication Publication Date Title
CA1216339A (fr) Cloture en fil metallique a temoin anti-effraction
EP0041794B1 (fr) Système de détection d'intrusion et détecteurs utiles pour celui-ci
EP0196510A1 (fr) Clôture en fil métallique avertissant des intrusions
EP0308737A1 (fr) Clôture en fil signalant une intrusion
US4077611A (en) Fence wire mount and insulator
US4647715A (en) Aerial communication cable closure
US3051935A (en) Protective screen
DE3437219C2 (de) Sensor für einen Zugdrahtzaun
US4281320A (en) Combined protective barrier and burglar alarm
CA1093171A (fr) Traduction non-disponible
JPH07500214A (ja) 通信端子ブロック
KR940009367B1 (ko) 변형 보호 idc 접속기
US4741480A (en) Electrical connectors
US1848837A (en) Mounting for flexible conductors
KR960002131B1 (ko) 접속 장치
US4843375A (en) Roll-up alarm screen assembly and shipping container therefor
JPH04264897A (ja) 通信システム用分配器
US3443658A (en) Collision-actuated circuit breaker
EP1807813B1 (fr) Dispositif antiintrusion pour clotures ou analogues
US4027130A (en) Cable activated switch
JPH076815A (ja) 端末用コネクタの電線保持構造
US4692567A (en) Electric fence holder
DE19537585C1 (de) Anschlußelement zum Anschließen des Kabelschirmes eines Schirmkabels
CN1125502C (zh) 接线夹
US4967040A (en) Screened electric cable provided with zones for rapid parallel connection

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE ES FR GB GR LI LU NL SE

17P Request for examination filed

Effective date: 19891120

17Q First examination report despatched

Effective date: 19910925

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19920206