EP0039371B1 - Surveillance device for the field behind a security fence - Google Patents
Surveillance device for the field behind a security fence Download PDFInfo
- Publication number
- EP0039371B1 EP0039371B1 EP80102844A EP80102844A EP0039371B1 EP 0039371 B1 EP0039371 B1 EP 0039371B1 EP 80102844 A EP80102844 A EP 80102844A EP 80102844 A EP80102844 A EP 80102844A EP 0039371 B1 EP0039371 B1 EP 0039371B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- braiding
- safety
- fence
- wire
- endless
- 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.)
- Expired
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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
- G08B13/02—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 an after-field protection for a security fence as described in the preamble of claim 1.
- a safety wire according to FIG. 1 is used for the production of a fence mesh.
- This safety wire contains in the core protected by a steel armor two resistance and two copper wires externally of the same dimension and nature, which is connected according to a circuit arrangement according to FIG. 2 to a bridge circuit suitable for safety purposes according to DE-OS-2 834 957 according to FIG. 3 .
- the two resistance wires A1 and A2 contained in the safety wire each represent a bridge branch of the bridge circuit. This automatically compensates for the change due to the outside temperature, since both bridge branches change at the same time and the bridge therefore always remains in balance.
- the two resistance wires are connected in opposite directions with the aid of the two copper wires B1 and B2 in accordance with the circuit arrangement with FIG. 2, so that a bridging attempt in any case immediately leads to an alarm.
- a spring-loaded switch A, B, C, D according to DE-OS-2 717 906, which triggers a magnetic switch D in the event of lateral or vertical loading. This release takes place with lever arm (arm) A over the tipping edge B and stylus with return spring C.
- the braid is buried (streams can also be protected) according to Fig. 5.
- the post-field protection required for objects of the highest security requirement (currently 5 m) is made with a braid made of the above-described security wire according to Fig. 6, which according to a special braiding process as well as all other fencing is braided in an endless process and therefore only has to be connected via a connection at the beginning and end of the respective mat.
- This braid (Fig. 7) is angled from the outer fence A via a spring D against the point G, which can also be designed as a second fence.
- the pull rope or pull rod F is mechanically connected from the center of the braid E to the bracket C.
- the entire system is simple, easy to manufacture and operate, and error-free with good workmanship.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Burglar Alarm Systems (AREA)
- Fencing (AREA)
Description
Die Erfindung bezieht sich auf eine Nachfeldsicherung für einen Sicherheitszaun wie sie im Oberbegriff des Anspruchs 1 beschrieben ist.The invention relates to an after-field protection for a security fence as described in the preamble of
Nach dem Stand der Technik werden alle physikalisch auswertbaren Detektionsmöglichkeiten angewandt. Die Vielzahl der Möglichkeiten sind Detektionen, die nicht mechanisch drahtgebunden sondern auf dem Gebiet der nieder- bis hochfrequenten Basis arbeiten. Alle diese Detektionen von Schall bis Laserlicht können auch durch andere Ereignisse, die nicht von einem intelligenten Täter verursacht werden, ausgelöst werden. Das sogenannte Ausfiltern von Objekten kleinerer Größenordnungen als ein menschlicher Körper ist als fragwürdig zu bezeichnen. Ein rein elektromeschanisch arbeitendes System scheiterte in der Vergangenheit an einer ganzen Reihe von technisch in der damaligen Zeit nicht lösbaren bzw. realisierbaren Problemen.According to the prior art, all physically evaluable detection options are used. The multitude of possibilities are detections, which do not work mechanically wired but in the area of the low to high frequency basis. All of these detections from sound to laser light can also be triggered by other events that are not caused by an intelligent perpetrator. The so-called filtering out of objects of smaller sizes than a human body can be described as questionable. In the past, a purely electro-mechanical system failed due to a whole series of problems that were technically impossible or realizable at the time.
In der GB-PS-978 051 wurden einige theoretische Möglichkeiten aufgezeigt, die jedoch technisch nicht anwendbar sind. Ein Widerstandsdraht als Seele des Drahtes für das Geflecht war angezeigt, jedoch nicht die Probleme mit der Temperaturdrift bei Anwendung im Freigelände (Tag - Nacht, Sommer - Winter usw.). Auch die Probleme der Geflechtsherstellung, die bei bekannten Herstellverfahren für Geflechte erforderlichen vielen Verbindungen und deren Dichtigkeit gegen Wasser und Erdfeuchtigkeit wurden nicht gelöst und auch keine Wege dazu aufgezeigt.In GB-PS-978 051 some theoretical possibilities have been shown, which however are not technically applicable. A resistance wire as the core of the wire for the braid was indicated, but not the problems with the temperature drift when used outdoors (day - night, summer - winter etc.). The problems of braid production, the many connections required in known production processes for braids and their tightness against water and earth moisture were also not solved and no ways of doing so were also shown.
Aus der EP-A-0 004 048 ist eine Anordnung zur Nachfeldsicherung für einen Sicherheitszaun aus Sicherheitsdraht bekannt, wobei dort der Sicherheitsdraht aus einem Widerstandsdraht besteht, der mit einer Abschirmung aus Metallgeflecht und einer darüber angeordneten Kunststoffummantelung versehen ist.From EP-A-0 004 048 an arrangement for post-field protection for a security fence made of security wire is known, where the security wire consists of a resistance wire, which is provided with a shield made of metal mesh and a plastic sheathing arranged above it.
Die Vermeidung von Fehlalarmen ist für jeden, der sich mit Sicherheitsproblemen befaßt, oberster Grundsatz. Jeder Fehlalarm stellt die Tauglichkeit einer Sicherungsanlage erheblich in Zweifel.Avoiding false alarms is a top priority for anyone concerned with security issues. Every false alarm seriously questions the suitability of a security system.
Es ist daher die Aufgabe der Erfindung, Fehlalarme zu vermeiden, die durch Temperaturschwankungen verursacht werden können.It is therefore the object of the invention to avoid false alarms which can be caused by temperature fluctuations.
Die Aufgabe wird durch die Merkmale des Anspruchs 1 gelöst. Die Erfindung wird nun anhand der Zeichnungen erläutert.
- Fig. 1 zeigt einen Sicherheitsdraht, wie er für die Geflechtsmatten verwendet wird.
- Fig. 2 zeigt eine Schaltungsanordnung für den Sicherheitsdraht.
- Fig. 3 zeigt eine Brückenschaltung.
- Fig. 4 stellt einen Auslegeschalter dar.
- Fig. 5 zeigt die Form des Zaunes.
- Fig. 6 zeigt die Nachfeldsicherung.
- Fig. 7 stellt eine Geflechtsmatte dar.
- Fig. 1 shows a safety wire as it is used for the mesh mats.
- Fig. 2 shows a circuit arrangement for the safety wire.
- Fig. 3 shows a bridge circuit.
- Fig. 4 shows a delivery switch.
- Fig. 5 shows the shape of the fence.
- 6 shows the post-field protection.
- Fig. 7 shows a mesh mat.
Für die Herstellung eines Zaungeflechtes wird ein Sicherheitsdraht gemäß Fig. 1 verwendet. Dieser Sicherheitsdraht enthält in der durch eine Stahlarmierung geschützten Seele zwei Widerstands- und zwei Kupferdrähte äußerlich gleicher Dimension und Beschaffenheit, die nach einer Schaltungsanordnung gemäß Fig. 2 an eine für Sicherheitszwecke nach DE-OS-2 834 957 gemäß Fig. 3 geeignete Brückenschaltung angeschlossen ist. Die im Sicherheitsdraht enthaltenen zwei Widerstandsdrähte A1 und A2 stellen je einen Brückenzweig der Brückenschaltung dar. Damit wird die Änderung durch die Außentemperatur automatisch kompensiert, da sich ja beide Brückenzweige gleichzeitig ändern und somit die Brücke immer im Gleichgewicht bleibt. Die beiden Widerstandsdrähte sind unter Zufhilfenahme der beiden Kupferdrähte B1 und B2 gemäß der Schaltungsanordnung mit Fig. 2 gegenläufig geschaltet, so daß ein Überbrückungsversuch in jedem Fall sofort zum Alarm führt.A safety wire according to FIG. 1 is used for the production of a fence mesh. This safety wire contains in the core protected by a steel armor two resistance and two copper wires externally of the same dimension and nature, which is connected according to a circuit arrangement according to FIG. 2 to a bridge circuit suitable for safety purposes according to DE-OS-2 834 957 according to FIG. 3 . The two resistance wires A1 and A2 contained in the safety wire each represent a bridge branch of the bridge circuit. This automatically compensates for the change due to the outside temperature, since both bridge branches change at the same time and the bridge therefore always remains in balance. The two resistance wires are connected in opposite directions with the aid of the two copper wires B1 and B2 in accordance with the circuit arrangement with FIG. 2, so that a bridging attempt in any case immediately leads to an alarm.
Zum Schutz gegen Überklettern des Zaunes befindet sich im oberen Drittel des Zaunpfostens E in Fig. 4 ein federnd gelagerter Schalter A, B, C, D nach DE-OS-2 717 906, der bei seitlicher oder vertikaler Belastung einen Magnetschalter D auslöst. Diese Auslösung erfolgt mit Hebelarm (Ausleger) A über die Kippkante B und Taststift mit Rückholfeder C.To protect against climbing over the fence is in the upper third of the fence post E in Fig. 4, a spring-loaded switch A, B, C, D according to DE-OS-2 717 906, which triggers a magnetic switch D in the event of lateral or vertical loading. This release takes place with lever arm (arm) A over the tipping edge B and stylus with return spring C.
Zum Schutz gegen Unterkriechen ist das Geflecht eingegraben (auch Bachläufe sind schützbar) gemäß Fig. 5. Die für Objekte höchster Sicherheitsanforderung erforderliche Nachfeldsicherung (z. Z. 5 m) wird mit einem Geflecht aus dem oben beschriebenen Sicherheitsdraht gemäß Fig. 6, das nach einem besonderen Flechtverfahren ebenso wie alle anderen Zaungeflechte im Endlosverfahren geflochten wird und dadurch nur über einen Anschluß am Anfang und Ende der jeweiligen Matte angeschlossen werden muß, ausgerüstet.To protect against crawling under, the braid is buried (streams can also be protected) according to Fig. 5. The post-field protection required for objects of the highest security requirement (currently 5 m) is made with a braid made of the above-described security wire according to Fig. 6, which according to a special braiding process as well as all other fencing is braided in an endless process and therefore only has to be connected via a connection at the beginning and end of the respective mat.
Dieses Geflecht (Fig. 7) wird in Schräglage vom äußeren Zaun A über eine Feder D gegen den Punkt G, der auch als Zweitzaun ausgeführt sein kann, abgespannt. Das Zugseil oder die Zugstange F ist von der Mitte des Geflechts E zum Ausleger C mechanisch verbunden. Dadurch wird bei vertikaler Belastung durch einen Täter der im Pfosten A montierte Auslegerschalter B betätigt und Alarm ausgelöst.This braid (Fig. 7) is angled from the outer fence A via a spring D against the point G, which can also be designed as a second fence. The pull rope or pull rod F is mechanically connected from the center of the braid E to the bracket C. As a result, in the event of vertical loading by a perpetrator, the boom switch B mounted in the post A is actuated and the alarm is triggered.
Das gesamte System ist einfach, in Herstellung und Betrieb problemlos und bei handwerklich guter Arbeit fehleralarmfrei.The entire system is simple, easy to manufacture and operate, and error-free with good workmanship.
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT80102844T ATE15561T1 (en) | 1980-02-25 | 1980-05-22 | NEAR FIELD SECURITY FOR A SECURITY FENCE. |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19803006999 DE3006999A1 (en) | 1980-02-25 | 1980-02-25 | Circuit for security fence - has four wires forming arms of Wheatstone bridge to release alarm when short-circuited |
DE3006999 | 1980-02-25 | ||
DE3010522 | 1980-03-19 | ||
DE19803010522 DE3010522A1 (en) | 1980-03-19 | 1980-03-19 | Security fence back-up alarm mesh - has connection to Y=shaped arm and movement indicator initiating alarm when moved vertically |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0039371A2 EP0039371A2 (en) | 1981-11-11 |
EP0039371A3 EP0039371A3 (en) | 1982-03-24 |
EP0039371B1 true EP0039371B1 (en) | 1985-09-11 |
Family
ID=25783918
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP80102844A Expired EP0039371B1 (en) | 1980-02-25 | 1980-05-22 | Surveillance device for the field behind a security fence |
Country Status (1)
Country | Link |
---|---|
EP (1) | EP0039371B1 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0298320A1 (en) * | 1987-07-09 | 1989-01-11 | Wilhelm Rademacher | Bracket device |
US6215397B1 (en) | 1996-08-13 | 2001-04-10 | Lindskog Innovation Ab | Electrical manually portable security case for the storage of theft attractive articles with an electrical mat having at least one elongated electrically conductive wire in a substantially continuous mesh, loop or eye structure |
AUPP106197A0 (en) * | 1997-12-22 | 1998-01-15 | Neumann Steel Pty Limited | A security fence |
AUPQ265599A0 (en) * | 1999-09-03 | 1999-09-30 | Neumann Steel Pty Limited | A coupling suitable for a security barrier |
ITBA20090046A1 (en) * | 2009-11-02 | 2011-05-03 | Lavorazione Alluminio E Ferro Di Di Biase Leonardo | PROTECTION DEVICE APPLICABLE TO RAILING |
FR3086962B1 (en) * | 2018-10-08 | 2020-10-30 | Sarl Mouneyrac Etudes | BAVOLET AND CLOSING ELEMENT EQUIPPED WITH A SUCH BAVOLET |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH624447A5 (en) * | 1976-12-13 | 1981-07-31 | Ernst Blaser | Surrounding fence with an alarm device for security-threatened installations |
DE2656349A1 (en) * | 1976-12-13 | 1978-06-22 | Ernst Blaser | High security interwoven wire fence - has plastic sheath enclosing steel reinforcing wire and resistance wire connected in bridge circuit |
DE2746068A1 (en) * | 1977-10-13 | 1979-04-26 | Ernst Blaser | High security interwoven wire fence - has plastic sheath enclosing steel reinforcing wire and resistance wire connected in bridge circuit |
DE2809895C3 (en) * | 1978-03-08 | 1981-10-29 | Horst Thomas Drahtzaunbau & Baustoffgrosshandlung, 4630 Bochum | Security fence for enclosing particularly endangered objects |
-
1980
- 1980-05-22 EP EP80102844A patent/EP0039371B1/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
EP0039371A3 (en) | 1982-03-24 |
EP0039371A2 (en) | 1981-11-11 |
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