EP1182629A2 - System for monitoring entry in a construction - Google Patents

System for monitoring entry in a construction Download PDF

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Publication number
EP1182629A2
EP1182629A2 EP01440230A EP01440230A EP1182629A2 EP 1182629 A2 EP1182629 A2 EP 1182629A2 EP 01440230 A EP01440230 A EP 01440230A EP 01440230 A EP01440230 A EP 01440230A EP 1182629 A2 EP1182629 A2 EP 1182629A2
Authority
EP
European Patent Office
Prior art keywords
optical waveguide
locking device
sleeve
optical
damping
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Withdrawn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
EP01440230A
Other languages
German (de)
French (fr)
Other versions
EP1182629A3 (en
Inventor
Heiko Murtfeld
Joachim Warnecke
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.)
Alcatel CIT SA
Alcatel Lucent SAS
Original Assignee
Alcatel CIT SA
Alcatel SA
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 Alcatel CIT SA, Alcatel SA filed Critical Alcatel CIT SA
Publication of EP1182629A2 publication Critical patent/EP1182629A2/en
Publication of EP1182629A3 publication Critical patent/EP1182629A3/en
Withdrawn legal-status Critical Current

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    • 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
    • G08B13/126—Mechanical actuation by the breaking or disturbance of stretched cords or wires for a housing, e.g. a box, a safe, or a room
    • 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
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/22—Electrical actuation
    • G08B13/24—Electrical actuation by interference with electromagnetic field distribution
    • G08B13/2491—Intrusion detection systems, i.e. where the body of an intruder causes the interference with the electromagnetic field
    • G08B13/2497—Intrusion detection systems, i.e. where the body of an intruder causes the interference with the electromagnetic field using transmission lines, e.g. cable

Definitions

  • the invention relates to a system for monitoring access to buildings according to the preamble of claim 1.
  • buildings of all types - from Residential house to the cable duct - are such Access surveillance systems required to ensure the security of the To guarantee residents or the facility as far as possible.
  • Mechanical and electrical devices are mainly used, the former can only insufficiently fulfill the monitoring function.
  • Electrical devices such as electrical contacts, Motion detectors, light barriers or camera surveillance are required a power supply, particularly in the case of cable ducts or from a Surveillance center not very distant surveillance objects is available.
  • the invention is based on the object Access monitoring system of the type described above to indicate which does not require electrical energy and a Remote monitoring allowed over long distances.
  • the task is with the characterizing features of claim 1 solved.
  • optical fibers can be used as a transmission medium for monitoring functions even at very long distances of over 100 kilometers.
  • cable systems there are the existing cable ducts. Because ever larger data streams over optical cables are transported are the operators of the cable systems keen to gain access in the shaft structures of their Monitor cable systems to prevent erroneous interference in the cable network or even prevent sabotage attacks.
  • the operator of the Cable duct system can be opened using a suitable monitoring system of a manhole cover immediately recognize and appropriate measures for Take damage minimization. Such a measure could be in it exist, the data streams when opening an unauthorized To redirect the manhole cover immediately to alternative routes in order to To prevent data loss.
  • the claimed access monitoring system not only serves to secure the cable duct system against unauthorized access, but also to increase the reliability of the overall system.
  • the attenuation of the optical fiber on the corresponding coupling point as an indicator for the opening of the Closing device used.
  • the type of mechanical coupling between the optical fiber and the locking device is preferred hit such that there is an increase in damping when opening results.
  • This increase in damping can be done with the help of a suitable Monitoring system to trigger an alarm in one Monitoring center can be used. Because monitoring systems in the Are able to also determine the position of the damping increase the open shaft is determined in the shortest possible time using site plans and be localized.
  • Claim 3 characterizes an advantageous embodiment of the coupling between optical fiber and locking device, the Optical fiber when turning a locking cylinder sleeve Locking device rotated and ultimately pulled in such a way that the Attenuation of the optical fiber at the coupling point increased.
  • Influencing the fiber damping when opening the shaft can precisely defined according to claim 4 by means of an attenuator become. Also in this embodiment, a rotatable sleeve Locking device used to trigger the change in damping be, as is apparent from claim 5.
  • the optical properties of the Optical fiber by one acted upon by the locking device optical switches are changeable.
  • Such a switch interrupts the Transmission path at the moment the closing device is opened.
  • the thus generated signal is in the receiving station in a simple manner and can be evaluated very clearly.
  • the monitoring of the Plant parts behind the switch no longer exist or only from the other side of the track through optical Reflection measurement possible.
  • a second split of the Transmission path then necessarily leads to the decoupling of one Section of the surveillance.
  • the optical waveguide as a fiber optic cable, that means with a sheath for kink protection and Rodent protection trained.
  • Figure 1 shows a locking system of a common design with an integrated waveguides
  • FIG. 1a Figures 1a and 1b, the principle of operation of access monitoring with the locking device according to FIG. 1.
  • Figure 1 illustrates the principle of operation of a conventional one Locking device 1 of a manhole cover 2, which gives access to a Cable duct system 3 designed.
  • the locking device 1 comprises one Lock cylinder 4 with a rotatable sleeve 5.
  • the sleeve 5 by means of a socket wrench by about 90 Degrees rotated.
  • At the free end of the sleeve 5 there is an optical waveguide 6 rotatably attached.
  • Optical fiber 6 by two fixed to the sleeve 5 bolts 7a and 7b bent around, resulting in an optical attenuation increase in the fiber results.
  • the increase in damping is used as an indicator of Manhole cover unlocking detected in a monitoring center.
  • the monitoring center is located at the end of the optical waveguide 6, where many manhole covers 2 are connected to an optical fiber 6 can and the distances to be bridged are over 100 km can.
  • FIGS. 1a and 1b illustrate the position of the optical waveguide 6 closed manhole cover 2 ( Figure 1a) and unlocked manhole cover 2 ( Figure 1b). It can be seen that when turning the sleeve 5 in the Optical fiber 6 fiber distortion occurs, which the Damping property of the optical fiber 6 changed.
  • the invention is not limited to the above Embodiment. Rather, a number of variants are conceivable which, even if the execution is fundamentally different, from the Make use of features of the invention. In particular limited the invention does not view the application for access monitoring of cable duct systems 3.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Alarm Systems (AREA)
  • Burglar Alarm Systems (AREA)
  • Light Guides In General And Applications Therefor (AREA)
  • Laying Of Electric Cables Or Lines Outside (AREA)

Abstract

The access monitoring system has a closure device (1) for permitting access to the installation, coupled mechanically to at least one light conductor (6), e.g. an optical fibre cable, which exhibits a variation in its optical characteristics when the closure device is opened, e.g. for operation of an optical switch.

Description

Die Erfindung betrifft ein System zur Zugangsüberwachung von Bauwerken gemäß dem Oberbegriff des Anspruchs 1. Bei Bauwerken aller Art - vom Wohnhaus bis zum Kabelschacht - sind derartige Zugangsüberwachungssysteme erforderlich, um die Sicherheit der Bewohner beziehungsweise der Anlage weitestgehend zu garantieren. Gebräuchlich sind vor allem mechanische und elektrische Vorrichtungen, wobei erstere die Überwachungsfunktion nur unzureichend erfüllen können. Elektrische Vorrichtungen, wie beispielsweise elektrische Kontakte, Bewegungsmelder, Lichtschranke oder Kameraüberwachung, erfordern eine Stromversorgung, die insbesondere bei Kabelschächten oder von einer Überwachungszentrale sehr weit entfernten Überwachungsobjekten nicht vorhanden ist.The invention relates to a system for monitoring access to buildings according to the preamble of claim 1. In buildings of all types - from Residential house to the cable duct - are such Access surveillance systems required to ensure the security of the To guarantee residents or the facility as far as possible. Mechanical and electrical devices are mainly used, the former can only insufficiently fulfill the monitoring function. Electrical devices, such as electrical contacts, Motion detectors, light barriers or camera surveillance are required a power supply, particularly in the case of cable ducts or from a Surveillance center not very distant surveillance objects is available.

Der Erfindung liegt die Aufgabe zugrunde, ein Zugangsüberwachungssystem der eingangs beschriebenen Gattung anzugeben, welches ohne elektrisch Energie auskommt und eine Fernüberwachung über weite Distanzen gestattet. Die Aufgabe wird mit den kennzeichnenden Merkmalen des Anspruchs 1 gelöst. Durch die Kopplung des Lichtwellenleiters mit der Schließvorrichtung ergibt sich die Möglichkeit, die optischen Eigenschaften des Lichtwellenleiters beispielsweise von einer externen Zentrale aus zu überwachen, wobei im Falle der Betätigung der Schließvorrichtung eine Veränderung der optischen Eigenschaften erfolgt. The invention is based on the object Access monitoring system of the type described above to indicate which does not require electrical energy and a Remote monitoring allowed over long distances. The task is with the characterizing features of claim 1 solved. Through the coupling of the optical fiber with the locking device, there is the possibility the optical properties of the optical waveguide, for example, from a external control center to monitor, in the event of actuation of the Closing device a change in the optical properties.

Am Ort der Schließvorrichtung ist dazu keine elektrische Hilfsenergie erforderlich. Außerdem können Lichtwellenleiter als Übertragungsmedium für Überwachungsfunktionen auch auf sehr weiten Entfernungen von über 100 Kilometern verlegt werden. Bei Kabelanlagen bieten sich dafür die vorhandenen Kabelschächte an. Da immer größere Datenströme über optische Kabel transportiert werden, sind die Betreiber der Kabelanlagen stark daran interessiert, den Zugang in den Schachtbauwerken ihrer Kabelanlagen zu überwachen, um irrtümliche Eingriffe in das Kabelnetz oder gar Sabotageangriffe zu unterbinden. Der Betreiber der Kabelkanalanlage kann über ein geeignetes Monitoring-System das Öffnen eines Schachtdeckels sofort erkennen und geeignete Maßnahmen zur Schadensminimierung ergreifen. Eine solche Maßnahme könnte darin bestehen, die Datenströme beim unautorisierten Öffnen eines Schachtdeckels sofort auf Ausweichstrecken umzuleiten, um einem Datenverlust vorzubeugen. Das beanspruchte Zugangsüberwachungssystem dient somit nicht nur zur Sicherung der Kabelkanalanlage vor Fremdzugriff, sondern auch der Erhöhung der Zuverlässigkeit des Gesamtsystems.There is no auxiliary electrical energy at the location of the locking device required. In addition, optical fibers can be used as a transmission medium for monitoring functions even at very long distances of over 100 kilometers. For cable systems there are the existing cable ducts. Because ever larger data streams over optical cables are transported are the operators of the cable systems keen to gain access in the shaft structures of their Monitor cable systems to prevent erroneous interference in the cable network or even prevent sabotage attacks. The operator of the Cable duct system can be opened using a suitable monitoring system of a manhole cover immediately recognize and appropriate measures for Take damage minimization. Such a measure could be in it exist, the data streams when opening an unauthorized To redirect the manhole cover immediately to alternative routes in order to To prevent data loss. The claimed access monitoring system not only serves to secure the cable duct system against unauthorized access, but also to increase the reliability of the overall system.

Gemäß Anspruch 2 wird die Dämpfung des Lichtwellenleiters an der entsprechenden Kopplungsstelle als Indikator für das Öffnen der Schließvorrichtung verwendet. Die Art der mechanischen Kopplung zwischen dem Lichtwellenleiter und der Schließvorrichtung ist vorzugsweise derart getroffen, dass sich beim Öffnen eine Erhöhung der Dämpfung ergibt. Diese Dämpfungserhöhung kann mit Hilfe eines geeigneten Monitoring-Systems zum Auslösen eines Alarms in einer Überwachungszentrale verwendet werden. Da Monitoring-Systeme in der Lage sind, auch die Position der Dämpfungserhöhung zu ermitteln, kann der geöffnete Schacht mit Hilfe von Lageplänen in kürzester Zeit ermittelt und lokalisiert werden.According to claim 2, the attenuation of the optical fiber on the corresponding coupling point as an indicator for the opening of the Closing device used. The type of mechanical coupling between the optical fiber and the locking device is preferred hit such that there is an increase in damping when opening results. This increase in damping can be done with the help of a suitable Monitoring system to trigger an alarm in one Monitoring center can be used. Because monitoring systems in the Are able to also determine the position of the damping increase the open shaft is determined in the shortest possible time using site plans and be localized.

Anspruch 3 charakterisiert eine vorteilhafte Ausführungsform der Kopplung zwischen Lichtwellenleiter und Schließvorrichtung, wobei der Lichtwellenleiter beim Drehen einer Schließzylinder-Hülse der Schließvorrichtung mitgedreht und letztlich derart gezerrt wird, dass sich die Dämpfung des Lichtwellenleiters an der Kopplungsstelle erhöht.Claim 3 characterizes an advantageous embodiment of the coupling between optical fiber and locking device, the Optical fiber when turning a locking cylinder sleeve Locking device rotated and ultimately pulled in such a way that the Attenuation of the optical fiber at the coupling point increased.

Die Beeinflussung der Faserdämpfung beim Öffnen des Schachtes kann gemäß Anspruch 4 mittels eines Dämpfungsgliedes genau festgelegt werden. Auch bei dieser Ausführungsform kann eine drehbare Hülse der Schließvorrichtung zur Auslösung der Dämpfungsänderung verwendet werden, wie aus Anspruch 5 hervorgeht.Influencing the fiber damping when opening the shaft can precisely defined according to claim 4 by means of an attenuator become. Also in this embodiment, a rotatable sleeve Locking device used to trigger the change in damping be, as is apparent from claim 5.

Gemäß Anspruch 6 ist eine kopplungsstellenspezifische Vorgabe der Höhe der Dämpfungsveränderung vorgesehen. Bei der Verzerrungsvariante der Ansprüche 2 und 3 könnte die Art der Befestigung des Lichtwellenleiters an der Schließvorrichtung entsprechend unterschiedlich ausgelegt werden, während bei der Dämpfungsgliedvariante der Ansprüche 4 und 5 eine genaue Abstufung der Dämpfungsveränderung durch den Einsatz unterschiedlich dimensionierter Dämpfungsglieder möglich ist. Auf diese Weise lässt sich zum Beispiel eine Einteilung der verschiedenen Kabelschachtöffnungen in Gefahrenklassen realisieren. Außerdem ergibt sich eine einfache Lokalisierungsunterstützung.According to claim 6 is a coupling point-specific specification of the height the change in damping provided. With the distortion variant of the Claims 2 and 3 could the type of attachment of the optical fiber the locking device can be designed differently, while in the attenuator variant of claims 4 and 5 a exact gradation of the damping change through the use differently sized attenuators is possible. To this For example, a division of the various can be done Realize cable duct openings in hazard classes. Also results simple localization support.

Nach Anspruch 7 ist vorgesehen, dass die optischen Eigenschaften des Lichtwellenleiters durch einen von der Schließvorrichtung beaufschlagten optischen Schalter veränderbar sind. Ein solcher Schalter unterbricht die Übertragungsstrecke im Moment der Öffnung der Schließvorrichtung. Das somit erzeugte Signal ist in der Empfangsstation auf einfache Weise und sehr eindeutig auswertbar. Jedoch ist im Fehlerfall die Überwachung der hinter dem Schalter liegenden Anlagenteile nicht mehr gegeben beziehungsweise nur von der anderen Streckenseite durch optische Reflektionsmessung möglich. Ein zweites Auftrennen der Übertragungsstrecke führt dann aber zwangsläufig zur Abkopplung eines Streckenabschnittes von der Überwachung. According to claim 7 it is provided that the optical properties of the Optical fiber by one acted upon by the locking device optical switches are changeable. Such a switch interrupts the Transmission path at the moment the closing device is opened. The thus generated signal is in the receiving station in a simple manner and can be evaluated very clearly. However, in the event of a fault, the monitoring of the Plant parts behind the switch no longer exist or only from the other side of the track through optical Reflection measurement possible. A second split of the Transmission path then necessarily leads to the decoupling of one Section of the surveillance.

In bevorzugter Ausführungsform gemäß Anspruch 8 ist der Lichtwellenleiter als LWL-Kabel, das heißt mit einer Umhüllung zum Knickschutz und Nagetierschutz ausgebildet.In a preferred embodiment according to claim 8, the optical waveguide as a fiber optic cable, that means with a sheath for kink protection and Rodent protection trained.

Die Erfindung wird nachfolgend anhand figürlicher Darstellungen näher beschrieben. Es zeigen:The invention is explained in more detail below with the aid of figurative representations described. Show it:

Figur 1 ein Schließsystem einer verbreiteten Bauform mit integriertem Wellenleiter undFigure 1 shows a locking system of a common design with an integrated waveguides and

die Figuren 1a und 1b das Funktionsprinzip einer Zugangsüberwachung mit der Schließvorrichtung gemäß Figur 1.Figures 1a and 1b, the principle of operation of access monitoring with the locking device according to FIG. 1.

Figur 1 veranschaulicht das Funktionsprinzip einer herkömmlichen Schließvorrichtung 1 eines Schachtdeckels 2, welcher den Zugang zu einer Kabelkanalanlage 3 gestaltet. Die Schließvorrichtung 1 umfasst einen Schließzylinder 4 mit einer drehbaren Hülse 5. Zum Entriegeln des Schachtdeckels 2 wird die Hülse 5 mittels eines Steckschlüssels um etwa 90 Grad gedreht. Am freien Ende der Hülse 5 ist ein Lichtwellenleiter 6 mitdrehtbar befestigt. Beim Entriegeln des Schachtdeckels 2 wird der Lichtwellenleiter 6 um zwei gegenüber der Hülse 5 ortsfesten Bolzen 7a und 7b herumgebogen, woraus eine optische Dämpfungserhöhung der Faser resultiert. Die Dämpfungserhöhung wird als Indikator für die Schachtdeckelentriegelung in einer Überwachungszentrale erkannt. Die Überwachungszentrale befindet sich quasi am Ende des Lichtwellenleiters 6, wobei viele Schachtdeckel 2 an einen Lichtwellenleiter 6 angeschlossen sein können und die zu überbrückenden Entfernungen über 100 km betragen können.Figure 1 illustrates the principle of operation of a conventional one Locking device 1 of a manhole cover 2, which gives access to a Cable duct system 3 designed. The locking device 1 comprises one Lock cylinder 4 with a rotatable sleeve 5. To unlock the Manhole cover 2, the sleeve 5 by means of a socket wrench by about 90 Degrees rotated. At the free end of the sleeve 5 there is an optical waveguide 6 rotatably attached. When unlocking the manhole cover 2 Optical fiber 6 by two fixed to the sleeve 5 bolts 7a and 7b bent around, resulting in an optical attenuation increase in the fiber results. The increase in damping is used as an indicator of Manhole cover unlocking detected in a monitoring center. The The monitoring center is located at the end of the optical waveguide 6, where many manhole covers 2 are connected to an optical fiber 6 can and the distances to be bridged are over 100 km can.

Die Figuren 1a und 1b verdeutlichen die Lage des Lichtwellenleiters 6 bei geschlossenem Schachtdeckel 2 (Figur 1a) und entriegeltem Schachtdeckel 2 (Figur 1b). Es ist ersichtlich, dass beim Drehen der Hülse 5 in dem Lichtwellenleiter 6 eine Faser-Verzerrung auftritt, welche die Dämpfungseigenschaft des Lichtwellenleiters 6 verändert.FIGS. 1a and 1b illustrate the position of the optical waveguide 6 closed manhole cover 2 (Figure 1a) and unlocked manhole cover 2 (Figure 1b). It can be seen that when turning the sleeve 5 in the Optical fiber 6 fiber distortion occurs, which the Damping property of the optical fiber 6 changed.

Die Erfindung beschränkt sich nicht auf das vorstehend angegebne Ausführungsbeispiel. Vielmehr ist eine Anzahl von Varianten denkbar, welche auch bei grundsätzlich anders gearteter Ausführung von den Merkmalen der Erfindung Gebrauch machen. Insbesondere beschränkt sicht die Erfindung nicht auf die Anwendung für die Zugangsüberwachung von Kabelkanalanlagen 3.The invention is not limited to the above Embodiment. Rather, a number of variants are conceivable which, even if the execution is fundamentally different, from the Make use of features of the invention. In particular limited the invention does not view the application for access monitoring of cable duct systems 3.

Claims (8)

System zur Zugangsüberwachung von Bauwerken, insbesondere Kabelkanalanlagen (3), wobei der Zugang eine Schließvorrichtung (1) aufweist, dadurch gekennzeichnet, dass mindestens ein Lichtwellenleiter (6) mit der Schließvorrichtung (1) derart mechanisch gekoppelt ist, dass die optischen Eigenschaften des Lichtwellenleiters (6) beim Betätigen der Schließvorrichtung (1) veränderbar sind.System for access monitoring of buildings, in particular cable duct systems (3), the access having a locking device (1), characterized in that at least one optical waveguide (6) is mechanically coupled to the locking device (1) such that the optical properties of the optical waveguide ( 6) can be changed when the closing device (1) is actuated. System nach Anspruch 1, dadurch gekennzeichnet, dass der Lichtwellenleiter (6) mit der Schließvorrichtung (1) derart gekoppelt ist, dass die Dämpfung des Lichtwellenleiters (6) veränderbar ist.System according to claim 1, characterized in that the optical waveguide (6) is coupled to the locking device (1) in such a way that the attenuation of the optical waveguide (6) can be changed. System nach Anspruch 2, dadurch gekennzeichnet, dass die Schließvorrichtung (1) einen Schließzylinder (4) mit einer, insbesondere mittels eines Steckschlüssels, drehbaren Hülse (5) aufweist, wobei der Lichtwellenleiter (6) mit der Hülse (5) verbunden ist und beim Drehen der Hülse (5) um mindestens einen nicht mitdrehenden Bolzen (7a, 7b) herumgebogen wird.System according to claim 2, characterized in that the locking device (1) has a locking cylinder (4) with a, in particular by means of a socket, rotatable sleeve (5), wherein the optical waveguide (6) is connected to the sleeve (5) and at Turning the sleeve (5) around at least one non-rotating bolt (7a, 7b) is bent. System nach Anspruch 2, dadurch gekennzeichnet, dass die Dämpfung mittels eines Dämpfungsgliedes veränderbar ist. System according to claim 2, characterized in that the damping can be changed by means of an attenuator. System nach Anspruch 4, dadurch gekennzeichnet, dass die Schließvorrichtung (1) einen Schließzylinder (4) mit einer, insbesondere mittels eines Steckschlüssels, drehbaren Hülse (5) aufweist, wobei das Dämpfungsglied mit der Hülse (5) verbunden ist und beim Drehen der Hülse (5) eine Dämpfungsänderung in dem Lichtwellenleiter (6) hervorruft.System according to Claim 4, characterized in that the locking device (1) has a locking cylinder (4) with a sleeve (5) which can be rotated, in particular by means of a socket wrench, the damping member being connected to the sleeve (5) and when the sleeve is rotated (5) causes a change in attenuation in the optical waveguide (6). System nach einem der Ansprüche 2 bis 5, dadurch gekennzeichnet, dass die Höhe der Dämpfungsveränderung kopplungsstellenspezifisch vorgegeben ist.System according to one of claims 2 to 5, characterized in that the amount of the change in damping is specified in a coupling point-specific manner. System nach Anspruch 1, dadurch gekennzeichnet, dass der Lichtwellenleiter (6) einen von der Schließvorrichtung (1) beaufschlagten optischen Schalter aufweist.System according to claim 1, characterized in that the optical waveguide (6) has an optical switch acted upon by the locking device (1). System nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass der Lichtwellenleiter (6) als LWL-Kabel ausgebildet ist.System according to one of the preceding claims, characterized in that the optical waveguide (6) is designed as an optical fiber cable.
EP01440230A 2000-08-11 2001-07-23 System for monitoring entry in a construction Withdrawn EP1182629A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10039273A DE10039273A1 (en) 2000-08-11 2000-08-11 System for monitoring access to buildings
DE10039273 2000-08-11

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EP1182629A2 true EP1182629A2 (en) 2002-02-27
EP1182629A3 EP1182629A3 (en) 2004-02-04

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EP (1) EP1182629A3 (en)
DE (1) DE10039273A1 (en)

Citations (3)

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Publication number Priority date Publication date Assignee Title
US4106849A (en) * 1976-10-18 1978-08-15 Stieff Lorin R Fiber optic seal
US4854706A (en) * 1987-07-27 1989-08-08 Virginia Tech Intellectual Properties, Inc. Modal domain optical fiber sensors
WO1997026517A1 (en) * 1996-01-19 1997-07-24 Gullmert, Jan Alarm indication in a protecting equipment using optical fiber

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2147439B (en) * 1983-10-01 1986-09-10 Standard Telephones Cables Ltd Intruder detector
DE3643525A1 (en) * 1986-12-19 1988-06-30 Philips Patentverwaltung METHOD AND DEVICE FOR MEASURING THE ADDITIONAL DAMPING RESULTING FROM CURVES IN A FOC
DE3940006A1 (en) * 1989-01-24 1990-08-02 Norbert Schaaf Optical surveillance esp. for secure doors or windows - relies upon variation of attenuation in light guide, caused by deformation through mechanical coupling to secured object
DE19855209A1 (en) * 1998-11-30 2000-06-08 Digital Design Gmbh Method and device for protecting objects or information against unauthorized access

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4106849A (en) * 1976-10-18 1978-08-15 Stieff Lorin R Fiber optic seal
US4854706A (en) * 1987-07-27 1989-08-08 Virginia Tech Intellectual Properties, Inc. Modal domain optical fiber sensors
WO1997026517A1 (en) * 1996-01-19 1997-07-24 Gullmert, Jan Alarm indication in a protecting equipment using optical fiber

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EP1182629A3 (en) 2004-02-04
DE10039273A1 (en) 2002-02-21
US20020030155A1 (en) 2002-03-14

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