EP0118698A2 - Treillis de protection - Google Patents

Treillis de protection Download PDF

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Publication number
EP0118698A2
EP0118698A2 EP84100799A EP84100799A EP0118698A2 EP 0118698 A2 EP0118698 A2 EP 0118698A2 EP 84100799 A EP84100799 A EP 84100799A EP 84100799 A EP84100799 A EP 84100799A EP 0118698 A2 EP0118698 A2 EP 0118698A2
Authority
EP
European Patent Office
Prior art keywords
light
bars
protective
grille
protective grille
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Withdrawn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
EP84100799A
Other languages
German (de)
English (en)
Other versions
EP0118698A3 (fr
Inventor
Horst Klostermann
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.)
Individual
Original Assignee
Individual
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
Priority claimed from DE19833304186 external-priority patent/DE3304186C2/de
Priority claimed from DE19833310726 external-priority patent/DE3310726A1/de
Application filed by Individual filed Critical Individual
Publication of EP0118698A2 publication Critical patent/EP0118698A2/fr
Publication of EP0118698A3 publication Critical patent/EP0118698A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL 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

Definitions

  • the invention relates to a protective grille, in particular for securing building openings or for enclosing plots of land with straight, hollow grille bars which contain an optical monitoring system which triggers an alarm signal when a grille bar is severed.
  • Protective grids of this type are known from DE-OS 3o 29 712.
  • the protective lattice has hollow, serpentine lattice bars, into the cavities of which electrical or optical strips are threaded.
  • Several such protective grids are put together to form a fence. If the bars of such a protective screen are cut, the optical or electrical conductor is also interrupted or damaged, which triggers an alarm.
  • a disadvantage of such a protective grille is, on the one hand, the complicated and expensive manufacture. On the other hand, after damage to the protective grille, the repair is extremely time-consuming because it is difficult to thread the new lines into the repaired grille.
  • Another disadvantage of the known protective grille is that the monitoring system does not react to a more or less strong deflection of the protective grille because the electrical or optical conductor can bend with the grille rod without an alarm being triggered.
  • a similar protective grille with the same disadvantages is known from DE-AS 26 53 o56.
  • the object of the present invention is therefore to develop the protective grille of the type mentioned above in such a way that it is easier to manufacture, more convenient to repair and triggers an alarm even when the grate bars deflect a certain amount.
  • the invention proposes that light sources or light receivers are arranged at the opposite ends of the bars and that the light passes directly from the light source to the light receiver through the cavity of the bars.
  • the light sources are light-emitting diodes and the light receivers are photodiodes.
  • Light-emitting diodes and photodiodes have become cheap, mass-produced items that have proven their functional reliability. They work with little energy and can be built as small as required.
  • the sensitivity of the protective grille can also be adjusted. If the alarm is to be triggered when the bars are deflected only slightly, the sensitivity of the light receiver will be as follows set that a slight weakening of the incident light is sufficient to trigger the alarm. If, on the other hand, the response sensitivity of the protective grille is to be lower, the sensitivity of the light receiver is set such that only a stronger weakening of the light that occurs triggers an alarm.
  • the inside of the tubular grille bars can optionally be provided with a protective layer. This protective layer protects the inside of the lattice rod against corrosion. The smoothing of the surface of the inside of the lattice rod caused by the coating also contributes to an improved light-guiding behavior of the lattice rod, so that it is possible to work with more precisely defined lighting conditions.
  • the interior of the lattice bar can also be completely or partially covered with transparent material, e.g. be filled with a clear plastic.
  • the tubular lattice bars are expediently arranged horizontally and their ends protrude into the cavities of the fence posts.
  • the light sources and light receivers located at the ends of the horizontally extending bars are protected against external influences, e.g. Weather conditions or the use of force, protected.
  • a security fence equipped in this way cannot be seen from the outside that it has an electronic monitoring system.
  • Another advantageous embodiment of the invention provides that the light sources and light receivers are arranged on rails accommodated in the fence post.
  • the manufacture and repairability is further simplified.
  • the bars of the protective grille do not need to be individually equipped with light sources and light receivers, so that a destroyed protective grid can be quickly replaced by a new one in later use, the rails with the light sources or light receivers being removed from the old protective grid and onto the new one Protective grids can be attached. If, on the other hand, faults occur in the area of the light sources or the light receivers, only the rail in question is replaced. A lengthy search for the source of the error can be avoided.
  • Fig. 1 shows a protective grille, which is designated by the reference numeral 1.
  • the protective grating consists of grating bars 2 arranged parallel to one another and perpendicular to these grating bars 3, also arranged parallel to one another.
  • the grating bars 2 are tubular.
  • In the openings of the tubular lattice bars 2 there are light-emitting diodes 4 on one side of the protective grating 1 and photodiodes 5 on the opposite side. Both the light-emitting diodes 4 and the photodiodes 5 are connected to energy supply and signal transmission lines 6.
  • the protective grille 1 serves as a fuse for a skylight dome 8.
  • the protective grid 1 works as follows.
  • the light emitting diodes 4 continuously emit light which falls through the tubular grating bars 2 onto the photodiodes 5 with a defined light intensity. If a tubular grid rod 2 is bent or even cut through, no light or only light with insufficient light intensity falls on the photodiode 5.
  • This deviation from the set sensitivity value of the photodiode 5 is determined by the electronic monitoring device 7, which triggers an alarm in this case.
  • the sensitivity of the photodiodes 5 can be adjusted so that, with less deflection of the bars 2, the light which reaches the photodiode 5 by scattering through the bars 2 is still sufficient to withhold the triggering of the alarm. It is hereby achieved that the protective grille is not triggered even at slight loads, for example by children playing or animals colliding with the grille.
  • the inner surfaces of the tubular lattice bars are optionally provided with a protective layer 9 (see FIG. 3), so that corrosion cannot endanger a long service life of the protective lattice 1 and the lighting conditions remain constant over a long period.
  • the interior of the hollow lattice bar can also be completely or partially filled with transparent material, for example plastic glass, as indicated in FIG. 3 on the right-hand side with the reference symbol lo.
  • Fig. 2 shows a portion of a security fence with a protective grille according to the invention.
  • a protective grid 14 is arranged between two hollow fence posts 12 and 13 embedded in the ground.
  • the protective grille 14 is made from vertical bars 15 and from horizontal bars 16.
  • the bars 16 are tubular.
  • the lower part of the protective grille 14 is also embedded in the floor.
  • In the openings of the tubular bars 16 are on one side of the protective grid 14 light-emitting diodes 17, on the opposite side photodiodes 18.
  • the light-emitting diodes 17 and the photodiodes 18 are each arranged on rails 19 and 2o, which also the power supply lines and signal transmission lines for the Contain light-emitting diodes 17 and photodiodes 18.
  • plug-in elements 21 and 22 which can be connected to distribution boxes 23.
  • the distribution boxes 23 are located in the floor below the fence and are connected to one another by electrical supply and transmission cables 24.
  • Y-booms 25 and 26 are arranged above the protective grids 14 and the fence posts 12 and 13, and they carry corresponding protective grids 14.
  • the Y-arms 25 and 26 are provided with monitoring switches 27 and 28 mounted in the fence posts 12 and 13, which trigger an alarm signal to the monitoring center when loaded.
  • the ends of the horizontal lattice bars 16 equipped with the light-emitting diodes 17 and the photodiodes 18 are protected in the cavities of the fence posts 12 and 13 and the Y-arms 15 and 16.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Burglar Alarm Systems (AREA)
  • Fencing (AREA)
  • Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
EP84100799A 1983-02-08 1984-01-26 Treillis de protection Withdrawn EP0118698A3 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3304186 1983-02-08
DE19833304186 DE3304186C2 (de) 1983-02-08 1983-02-08 Sicherheitszaun
DE19833310726 DE3310726A1 (de) 1983-03-24 1983-03-24 Schutzgitter
DE3310726 1983-03-24

Publications (2)

Publication Number Publication Date
EP0118698A2 true EP0118698A2 (fr) 1984-09-19
EP0118698A3 EP0118698A3 (fr) 1985-03-13

Family

ID=25808111

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84100799A Withdrawn EP0118698A3 (fr) 1983-02-08 1984-01-26 Treillis de protection

Country Status (3)

Country Link
US (1) US4586030A (fr)
EP (1) EP0118698A3 (fr)
CA (1) CA1226641A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2182182B (en) * 1985-04-24 1989-06-28 Sound Special Services Limited Intrusion detecting device

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3447122A1 (de) * 1984-12-22 1986-06-26 Messerschmitt-Bölkow-Blohm GmbH, 2800 Bremen Messanordnung zum feststellen von rissen in prueflingen
US4810999A (en) * 1985-12-06 1989-03-07 Moshier George A Conductive frangible grill anti-intrusion device
IL78728A (en) * 1986-05-08 1990-07-12 Magal Security Systems Ltd Security fence
IL78856A (en) * 1986-05-20 1990-07-12 Magal Security Systems Ltd Sensor for a security fence
IL83634A (en) * 1987-08-25 1992-06-21 Ispra Israel Prod Res Co Ltd Railing
US4936649A (en) * 1989-01-25 1990-06-26 Lymer John D Damage evaluation system and method using optical fibers
US5015842A (en) * 1989-06-01 1991-05-14 United Technologies Corporation High density fiber optic damage detection system
US5049855A (en) * 1989-10-24 1991-09-17 Slemon Charles S Security screen system
US20060075456A1 (en) * 1997-01-06 2006-04-06 Gray James Harold Methods and systems for collaborative capture of television viewer generated clickstreams
US7189959B1 (en) * 2004-03-18 2007-03-13 Fiber Optic Systems Technology Fiber optic impact detection system
US7123785B2 (en) * 2004-10-15 2006-10-17 David Iffergan Optic fiber security fence system
US7227465B2 (en) * 2005-01-28 2007-06-05 Lucent Technologies Inc. Security bar with fiber optic cable based security monitoring
US8297777B1 (en) * 2006-03-03 2012-10-30 Mile High Balusters Barrier with ornamental lighting
ES2368982B1 (es) * 2010-02-02 2012-09-24 Jorge Antonio Saura Sotillos Malla electrosoldada de alambre y tubo.
AU2011316476A1 (en) * 2010-10-12 2013-04-18 Qld Security Fencing Pty Ltd Rapid deployment high security electric fencing
US12195968B2 (en) * 2011-12-23 2025-01-14 Karen M. Sager Filtering mesh with growth inhibiting material
US12553243B2 (en) 2022-07-27 2026-02-17 Karen M. Sager Filtration device with step

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1057237B (de) * 1956-05-29 1959-05-14 Meier Elektromotorenfabrik A G Lichtschrankengeraet
US3183499A (en) * 1963-07-03 1965-05-11 Richard G Cowen High directivity solid curtain perimeter intrusion system
DE1945621A1 (de) * 1969-09-09 1971-03-11 Alois Dr Bauer Luftkissen-Aufprallschutz fuer Kraftfahrzeuge mit photoelektrischer oder pneumatischer oder hydraulischer Ausloesung
DE2255788A1 (de) * 1972-11-15 1974-05-16 Peter Hans Schutz von objekten (anlagen und gelaende) gegen unbefugtes eindringen mittels laser-verfahren
CS183276B1 (en) * 1976-01-20 1978-06-30 Viktor Kraus Safety device for the doors of mass coneyances
US4275294A (en) * 1977-09-28 1981-06-23 Fibun B.V. Security system and strip or strand incorporating fibre-optic wave-guide means therefor
GB1602743A (en) * 1977-09-28 1981-11-18 Fibun Bv Security system
GB2038060B (en) * 1978-10-24 1982-09-29 Standard Telephones Cables Ltd Intruder alarm
DE3176023D1 (en) * 1980-10-10 1987-04-23 Pilkington Perkin Elmer Ltd Intruder detection security system
GB2098770B (en) * 1981-05-13 1985-11-13 Factor Enterprises Ltd X Security barrier structure
US4450434A (en) * 1981-05-19 1984-05-22 The United States Of America As Represented By The Secretary Of The Army Apparatus for determining break locations in fencing
US4488040A (en) * 1982-11-19 1984-12-11 Gte Products Corporation Fiber optic sensor
DE3306002A1 (de) * 1983-02-22 1984-08-23 Werner 4292 Rhede Korb Hohlrohr fuer zaeune, gitter od. dgl.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2182182B (en) * 1985-04-24 1989-06-28 Sound Special Services Limited Intrusion detecting device

Also Published As

Publication number Publication date
US4586030A (en) 1986-04-29
EP0118698A3 (fr) 1985-03-13
CA1226641A (fr) 1987-09-08

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Effective date: 19851114