WO1980000044A1 - Conduites a l'abri d'actes de sabotage, pour installations de securite et leur installation dans un grillage de protection - Google Patents

Conduites a l'abri d'actes de sabotage, pour installations de securite et leur installation dans un grillage de protection Download PDF

Info

Publication number
WO1980000044A1
WO1980000044A1 PCT/CH1979/000083 CH7900083W WO8000044A1 WO 1980000044 A1 WO1980000044 A1 WO 1980000044A1 CH 7900083 W CH7900083 W CH 7900083W WO 8000044 A1 WO8000044 A1 WO 8000044A1
Authority
WO
WIPO (PCT)
Prior art keywords
insert
pressure
security
network
conduits
Prior art date
Application number
PCT/CH1979/000083
Other languages
German (de)
English (en)
Inventor
O Winkler
Original Assignee
Multisafe Ag
O Winkler
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 Multisafe Ag, O Winkler filed Critical Multisafe Ag
Publication of WO1980000044A1 publication Critical patent/WO1980000044A1/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
    • G08B13/20—Actuation by change of fluid pressure
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/04—Hydraulic or pneumatic actuation of the alarm, e.g. by change of fluid pressure
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
    • G08B29/02—Monitoring continuously signalling or alarm systems
    • G08B29/04—Monitoring of the detection circuits
    • G08B29/046—Monitoring of the detection circuits prevention of tampering with detection circuits

Definitions

  • the invention relates to tubular lines for pneumatic or hydraulic security systems secured against sabotage and other malfunctions, which are either themselves used as sensors for the detection of disturbing events, or for the transmission of signals emanating from pressure-sensitive sensors. and the use of these lines for a safety network.
  • Pneumatic or hydraulic security systems in the form of sensor systems are becoming more and more common for monitoring and securing areas of the terrain, doors, windows and interiors against intruders, for preventing escape in prisons, or for protecting against fire, chemical media, flooding, etc. mainly used because of their low susceptibility to false alarms.
  • the interior of the sensor which is to trigger the alarm must be connected via a line to a detector which registers any change in pressure.
  • the connecting line rn ⁇ ss together with the sensor a communicating, filled with gas or liquid form a closed system, which is in the idle state all under the same pressure and may be interrupted anywhere if it is to be operational. " The same applies if, as mentioned above, the line itself functions as a sensor.
  • the line to the detector must be interrupted by careful squeezing. Since the detector only responds to pressure changes which must also have a certain minimum value, but does not respond to the pressure as such, this squeezing, if it is carried out carefully and slowly, remains undetected, since the pressure change which occurs nevertheless always occurs below the response value of the detector remains. When the squeezing is complete, pressure changes can no longer reach the detector, and the security system is thus deactivated.
  • the present invention aims to avoid this disadvantage and has tubular pipes for pneumatic or hydraulic lines which are secured against sabotage and other malfunctions
  • To create security systems that are characterized by the fact that they play inside. contain an insert made of a hard, high-strength and tough material, the play between the insert and the inner tube wall being dimensioned such that a flow conductance value which is still sufficient for the function of the securing system is ensured.
  • the first aim of the invention is therefore to prevent the line system from being completely interrupted by being squeezed off.
  • the pneumatic or hydraulic pipelines described above if they are not welded but braided into a latticework, consist either of soft metallic materials of high ductility, e.g. Copper or aluminum, or if they have to be flexible, or are used for fire protection, or are used as signal lines, usually made of plastic hoses reinforced with fabric.
  • OMPI Work inside pressure in order to also reliably exclude the possibility of sealing by softening or liquefying the plastic, with which the cavities could possibly be filled.
  • Fig. 7 shows a cross section through a line similar to Fig. 3, but with an electrically insulated insert.
  • Figures 1 to 3 show a circular pipe 1 in the initial state, in which a medium (gas or liquid) is contained in the static pressure state (positive or negative pressure).
  • a medium gas or liquid
  • static pressure state positive or negative pressure
  • an insert 2 with game 3 is shown for the inner wall of the pipeline;
  • the insert 2 is U-shaped in Fig. 1 and H-shaped in Fig. 2, while in Fig. 3 it consists of several strands 2 ', for example of individual wires twisted together. If the lines are squeezed, they deform, for example, to the cross sections according to FIGS. 4-6. The inserts are deformed in the process, but at least one free connecting channel 4 always remains. Although this can be narrow.
  • OMPI WIPO due to its brevity, it causes only a slight pressure drop. If the adjacent pipe section is deformed or even destroyed, the resulting pressure wave (it may also be a pressure drop) can propagate through the pinch point to the detector and trigger the alarm there.
  • the pipes are made of a ductile soft metal, e.g. made of aluminum. This is the more unfavorable case, since plastic tubes become so thin when squeezed because of the greater material displacement at the contact point on the insert that they are very likely to leak.
  • the insert 2 ' is electrically insulated from the pipe 1 by an insulation 5.
  • the insert 2 ' can also be used as the one conductor of an electrical two-wire monitoring system that is added for hydraulic or pneumatic monitoring.
  • the other conductor is formed either by the pipeline 1 itself or by a second insulated inner conductor, not shown. A current interruption or short circuit caused by an intrusion, or the electrical change in capacitance between the two conductors then triggers the alarm.
  • Differential pressure converters or other pressure-sensitive means which emit an electrical signal are frequently used as detectors. This can then be routed to the control center via the electrical conductor in the pipeline.
  • the pneumatic or hydraulic lines according to the invention have an extraordinarily high level of security against sabotage or unintentional interruptions due to mechanical action. In this way, they make the principle of pneumatic securing practically applicable in the first place.
  • An intruder signals that countermeasures can be taken at an early stage or at least deterring optical or acoustic signals can be triggered.
  • Swiss patent 298 712 also proposes a protective grille under pressure, which is welded together from pipes, for the same task.
  • Swiss Patent No. 510 309 the same system is again proposed as an alarm device for windows and / or doors of prison cells and additionally for vault systems, pipes under pressure which are connected to a supply line which is also a signal line , are built into the safe wall.
  • US Pat. No. 3,961,328 also describes a pressure line made of rubber hose which is connected to the goods to be transported or a trailer when the goods are being transported from the driver's seat, so that a pressure drop occurs when the trailer or the goods are lost as a result of the line being interrupted and a signal is triggered.
  • Protective grids of this type would be very expensive and, because of their great mechanical stability, would also be easy to climb over. Above all, they are completely unsuitable where, e.g. A high degree of flexibility is required in the case of roller shutter security or * in the event of temporary securing of goods and objects, as will be shown later.
  • the invention uses the same principle of pneumatic security, it has a new way of practically realizing a surveillance system that does not have the restrictions mentioned and therefore can be used very universally and is also inexpensive.
  • this route consists in the use of the pipelines mentioned for a safety net, which is characterized in that the safety net consists of Mesh network exists, which is braided from these pipelines and that the pipelines are under a pressure which deviates from the ambient pressure, the change of which serves for signaling in the event of destruction or interruption of the pipeline system.
  • thin pipes made of a ductile metal such as aluminum or copper, e.g. with an inner diameter of approx. 3 mm and a wall thickness of approx. 1 mm, or plastic hoses of similar dimensions, which can be reinforced with fabric.
  • the mesh size is dimensioned so that a human body can no longer get through. It can therefore be 20 to 25 cm, i.e. relatively large, which makes braiding the net easier.
  • nets can be braided from a relatively inexpensive raw material, which are light in weight, easily transported in rolls and fastened in place on the supporting frame or transported as finished lattice units and can be joined together at the installation site and then can be connected to one or more pressure lines coming from the control center via a few connection points.
  • the mechanical reinforcement by the insert gives the nets sufficient strength and elasticity against undesired mechanical influences even when using plastic hoses.
  • its flexibility transmits the forces to the suspension, so that, as will be shown later with examples, a target leak point is opened there and also in such a case when a limit value of the Load a signal is triggered. If this interruption is reversible, the safety network immediately fulfills its protective function again after the alarm is triggered.
  • the first example concerns the securing of the site of a large industrial object, for example a nuclear power plant, on its periphery.
  • Fig. 8 shows common backup methods today and also the possible to overcome them.
  • the terrain here is initially secured by the wire fence 6 at the outer border.
  • 7 and 3 are microwave transmitters, of which a larger number must be installed on the perimeter of the site due to their limited range.
  • the delimitation of the areas 9 and 10 / within which an alarm may be triggered when an object passes through the change in intensity of the microwave radiation at the receiver is indicated by dashed lines.
  • pressure-sensitive mats n and 12 are located in the floor which also trigger an alarm when an intruder enters, and finally an internal barrier is formed by a further chain link fence 13.
  • the intruder 15 could be the border area abseilen with the cable 16 'in the inner overall'.
  • FIG. 9 and 10 show a solution with the security network according to the invention.
  • Fig. 9 which corresponds to the section AA 'in Fig. 0, there is again a normal chain link fence 17 at the outermost boundary.
  • the previous inner fence 13 in Fig. 8 is, however, replaced by individual safety nets 18, 19, 20, 21, 22, 23, which are attached to frames made of hollow beams.
  • the fence has a large projection upwards and is supported there with double T-beams 24. It also continues down into the earth at 23 to make it difficult to dig.
  • the network is, as described above, braided from ductile metal tubes and has two ends 25 and 26 which are connected to the steel or aluminum frame 27, which is welded from tubes, and are sealed are screwed.
  • the network is fastened with a second pipeline 28, the ends of which are also connected to the hollow frame at 29 and 30 and are screwed tightly together.
  • the net could also be braided directly onto the frame.
  • the attachment of a prefabricated network with a second pipe 28 is simpler in terms of production.
  • OMPI can be.
  • the membrane switch 17 limits the membrane
  • the two spaces 41 and 42 which are connected to a Druck ⁇ lead 43 and a pressure discharge line 44 connected •.
  • the latter leads to the safety net in the field.
  • the two spaces 41 and 42 are connected via a throttle point 45, which compensates for slow pressure fluctuations, so that the membrane always remains in the neutral, sensitive position in the normal state.
  • a check valve can also be installed, which closes in the event of an alarm and as the first irreversible element even when, as when climbing over the fence using the device shown in FIGS. 13 and 14, only over ⁇ a leak occurs, maintains the alarm state and also avoids gas losses, however, in order to reactivate this branch of the safety system, the check valve must then be reset to the initial position.
  • the membrane is deflected and actuates an organ for triggering an alarm, e.g. a capacitive or inductive proximity switch or a reed relay.
  • FIG. 13 shows the upper left corner of a frame, such as is installed at 18 in the protective fence shown in FIG. Fig. 14 shows a section along AA in Fig. 13.
  • the upper crossbar 46 of the frame, on which the safety net is suspended, is interrupted at both ends - the upper right corner of the frame being symmetrical to the left - and via an elastic link 47 - 17 -
  • This fuse normally only needs to be attached to the top crossbar of a fence, i.e.. only there, where the danger of exceeding becomes acute. If a ladder were placed on the fence, an alarm would also be triggered. - 18 -
  • the fence constructions described above cannot be influenced in their protective function by weather, birds, projectiles or other vibrations. At a lower height, they are also suitable for securing private property. Since the fence is mechanically very stable, it can also be used as an external property boundary.
  • FIG. 16 corresponds to section B-B in Fig. 15.
  • the closure cover 80 shown in FIG. 16 has been removed and in FIG. 16 the lower part of the safety net .61 '(FIG. 15) is again not shown.
  • the figures show how the net% 61 is wound onto the cylinder 62 ' / via which the roller shutter 63, which consists, for example, of light metal tubular profiles
  • a pawl 82 engages in a slot 81 in the tube 62 in the end position of the roller shutter and is biased by springs 83, 83 '.
  • This securing device is particularly important and valuable if there is no possibility of installing the protective fence according to the invention or if an additional second securing device, which is based on the pneumatic principle, is desired. You can then do the same pressure generating and monitoring system for both protection ar 'th use.
  • Another application example is the securing of valuable goods against theft, for example in a warehouse or outdoors, and the protection of valuable operating equipment against sabotage. This can be done in such a way that a safety net made of plastic tubes covers the goods or operating equipment and the frame between which the net is stretched, which also consists of plastic tubes with an insert, is above the target in several points - Leak points attached and, like the ends of the network, connected to a pressure line which is installed underground. The plastic line forming the frame must be stretched tight between the fastenings so that it cannot be raised without opening the line system.
  • the last example is the possibility of securing a vault.
  • it is done in the same way as the securing of goods just described, in that all walls, the ceiling and the floor are covered with safety nets, whereby the ring lines to which the individual nets are attached or suspended each cover one wall, best along the corners, where the walls meet, installed and again provided with the necessary number of target leak points, at which the attachment takes place at regular intervals.
  • Wiede is on one. Place each ring line and the associated network connected to a pressure line.
  • the networks can e.g. be covered with plastic plates so that they are invisible.
  • the doors to the vault or doors to apartments and business premises can also be protected in the same way as the roller shutter security by a safety net that is built into the door panel.
  • the same security principle can also be used for walls and doors in prison cells.
  • the security network according to the invention has numerous advantages over known security methods, in addition to its versatility for protection against intruders: possibilities of sabotage are practically excluded. Accidental false alarm is not possible.
  • the protective effect begins at the outermost periphery of the space to be protected. It is easy to install; no trained specialists are required for this and for the operation. It cannot be influenced by weather or mechanical influences that are not aimed at destroying it. Rain, wind, snow, ice and fog and moving animals or plants or vibrations have no influence on the system. It has no electricity and energy consumption. Large areas over long distances as well as individual rooms can be secured.
  • The. System can be set up completely pneumatically without power supply if pneumatic alarm devices, such as sirens , are used. Because no electrical or 'magnetic fields are present, the system can be disturbed neither tracked nor. - 22 -

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Burglar Alarm Systems (AREA)

Abstract

Les conduits pneumatiques ou hydrauliques qui forment une protection contre des intrus, sont relies a un detecteur qui enregistre une variation eventuelle de la pression et declenche une alarme. Afin de prevenir une interruption, par exemple, par ecrasement des conduits, ceux-ci comprennent un noyau (2) en matiere dure et resistante, par exemple un ou plusieurs fils d'acier et de preference un cable d'acier. Lors d'une tentative d'ecrasement il reste des canaux interieurs (4) dus a la capacite de fluage limitee du noyau et les variations de pression peuvent etre decelees par le detecteur. Les conduites servent a la confection de grillages qui sont sous pression et peuvent etre utilises comme clotures pour la protection peripherique ou comme protection de portes ou stores. Ils constituent un obstacle contre la penetration dans un espace ou local ainsi protege, qui ne peut etre franchi qu'apres destruction prealable. La fuite ainsi causee entraine une perte de pression et, consecutivement, le declenchement de l'alarme.
PCT/CH1979/000083 1978-06-06 1979-06-06 Conduites a l'abri d'actes de sabotage, pour installations de securite et leur installation dans un grillage de protection WO1980000044A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH619578A CH634426A5 (de) 1978-06-06 1978-06-06 Gegen sabotage und andere stoerungen gesicherte rohrleitung in einer elektropneumatischen oder elektrohydraulischen sicherungsanlage und verwendung dieser leitung.
CH6195/78 1978-06-06

Publications (1)

Publication Number Publication Date
WO1980000044A1 true WO1980000044A1 (fr) 1980-01-10

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ID=4305760

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CH1979/000083 WO1980000044A1 (fr) 1978-06-06 1979-06-06 Conduites a l'abri d'actes de sabotage, pour installations de securite et leur installation dans un grillage de protection

Country Status (7)

Country Link
EP (1) EP0016025A1 (fr)
BE (1) BE876799A (fr)
CH (1) CH634426A5 (fr)
DE (2) DE2952834C1 (fr)
NL (1) NL7904450A (fr)
WO (1) WO1980000044A1 (fr)
ZA (1) ZA792658B (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2575570A1 (fr) * 1984-12-27 1986-07-04 Dudognon Pecqueur Eric Dispositif de controle pneumatique de passage applique notamment a la protection antivol de vehicules
US4965912A (en) * 1988-03-05 1990-10-30 Trutzschler Gmbh & Co. Kg Method and apparatus for severing the sliver in sliver coilers
EP0464231A1 (fr) * 1990-06-30 1992-01-08 Peisler Gmbh Panneau à contact de sécurité

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10024519A1 (de) * 2000-05-18 2001-11-22 Scc Special Comm Cables Gmbh Einrichtung zur Brandüberwachung
DE202008009802U1 (de) * 2008-07-21 2009-01-08 Haverkamp, Bernhard Sicherheitszaun
DE202015103498U1 (de) 2014-12-27 2015-07-16 Jochen Schalk Frhr. v. Gravenreuth Sicherungsanlage für eingezäunte Bereiche

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE188944C (fr) *
DE536704C (de) * 1931-10-24 Friedrich Seel Anordnung gegen unbefugtes Aufheben der Schutzwirkung von elektropneumatischen Alarmsicherungen
FR831893A (fr) * 1937-04-21 1938-09-15 Cie Telephones Thomson Houston Perfectionnements aux avertisseurs automatiques d'incendie ou appareils similaires

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1665651A (en) * 1925-11-14 1928-04-10 Youngblood David Franklin Pneumatic cage for prisons, vaults, and the like
CH298712A (de) * 1952-03-20 1954-05-15 Galliker Kaspar Einbruchsalarmanlage.
CH510309A (de) * 1970-11-12 1971-07-15 Daetwyler Charles Alarmvorrichtung für Fenster und/oder Türen von Gefängniszellen und Tresoranlagen
US3961328A (en) * 1973-06-11 1976-06-01 Center For Management Services And Applied Research Detection system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE188944C (fr) *
DE536704C (de) * 1931-10-24 Friedrich Seel Anordnung gegen unbefugtes Aufheben der Schutzwirkung von elektropneumatischen Alarmsicherungen
FR831893A (fr) * 1937-04-21 1938-09-15 Cie Telephones Thomson Houston Perfectionnements aux avertisseurs automatiques d'incendie ou appareils similaires

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2575570A1 (fr) * 1984-12-27 1986-07-04 Dudognon Pecqueur Eric Dispositif de controle pneumatique de passage applique notamment a la protection antivol de vehicules
US4965912A (en) * 1988-03-05 1990-10-30 Trutzschler Gmbh & Co. Kg Method and apparatus for severing the sliver in sliver coilers
EP0464231A1 (fr) * 1990-06-30 1992-01-08 Peisler Gmbh Panneau à contact de sécurité

Also Published As

Publication number Publication date
EP0016025A1 (fr) 1980-10-01
ZA792658B (en) 1980-06-25
DE2952834D2 (en) 1980-11-20
CH634426A5 (de) 1983-01-31
DE2952834C1 (de) 1985-02-28
NL7904450A (nl) 1979-12-10
BE876799A (fr) 1979-10-01

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