EP0659293B1 - Einbrecher-abschrecksystem - Google Patents

Einbrecher-abschrecksystem Download PDF

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Publication number
EP0659293B1
EP0659293B1 EP93919531A EP93919531A EP0659293B1 EP 0659293 B1 EP0659293 B1 EP 0659293B1 EP 93919531 A EP93919531 A EP 93919531A EP 93919531 A EP93919531 A EP 93919531A EP 0659293 B1 EP0659293 B1 EP 0659293B1
Authority
EP
European Patent Office
Prior art keywords
smoke screen
smoke
density
generating means
intruder
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 - Lifetime
Application number
EP93919531A
Other languages
English (en)
French (fr)
Other versions
EP0659293A1 (de
Inventor
Paul Anton Dards
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 GB929219365A external-priority patent/GB9219365D0/en
Application filed by Individual filed Critical Individual
Publication of EP0659293A1 publication Critical patent/EP0659293A1/de
Application granted granted Critical
Publication of EP0659293B1 publication Critical patent/EP0659293B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B15/00—Identifying, scaring or incapacitating burglars, thieves or intruders, e.g. by explosives
    • G08B15/02—Identifying, scaring or incapacitating burglars, thieves or intruders, e.g. by explosives with smoke, gas, or coloured or odorous powder or liquid

Definitions

  • the present invention relates to an intruder deterrent system of the type which generates a screen of smoke or vapour.
  • an intruder deterrent system of the type which generates a smoke screen and which comprises: smoke screen generating means; activating means to activate the smoke screen generating means when an intruder detection means, operatively linked to the activating means, is triggered; and smoke screen density regulating means having a sensor to sense the density of the smoke screen and control means responsive to the sensed density to adjust the output of the smoke screen generating means to maintain the screen density at a desired level.
  • the smoke screen generating means suitably comprises a pump the rate and/or duration of operation of which is controllable by said control means to regulate the density of the smoke screen.
  • the smoke screen generating means comprises a storage tank for an aqueous liquid composition and delivery pipes extending from the tank to deliver the liquid composition to an outlet, there being further provided heating means to heat the liquid composition which has left the tank to thereby convert the liquid composition into a dense vapour.
  • the duration of operation of the pump is controlled to regulate the density of the smoke screen and the rate of operation of the pump is controllable to regulate the efficiency of use of the liquid composition.
  • the liquid comprises a mixture of Glycol and water. Heating of this mixture as it passes through the delivery pipes to the outlet will vaporise the mixture to form a fog.
  • the smoke density sensor is housed independently of the smoke screen generating means.
  • the activating means is advantageously operatively linked to a fire detection system so as to be inactivated if fire detection system detects a fire. This will prevent hindrances to firemen breaking and entering a blazing building in which the intruder deterrent system is installed and armed.
  • the smoke screen generating means may comprise a storage tank for an aqueous liquid composition and one or more delivery pipes extending from the tank to deliver the liquid composition to an outlet, the system further comprising heating means adjacent the delivery pipe (s) to heat the liquid composition in the delivery pipe (s) to thereby convert the liquid composition into a dense vapour, control means being provided to control the rate of operation of the pump in dependence upon the temperature of the heating means.
  • a smoke-generating intruder deterrent unit 1 comprising a robust metal or plastics casing housing a liquid storage tank 2 which is adapted to act as a reservoir for a Glycol/water mixture or other suitable heat labile fog-generating mixture.
  • One or more delivery pipes 3 extend from the storage tank 2 to a powerful oscillating piston pump 4 which, when activated, operates to draw the liquid mixture from the tank 2 and pump it at a selectable variable rate.
  • a powerful oscillating piston pump 4 which, when activated, operates to draw the liquid mixture from the tank 2 and pump it at a selectable variable rate.
  • two such pumps 4 are provided in parallel to each other to improve fluid flow.
  • the fluid pumped by the or each piston pump 4 is forced through a narrow coiled tube 5 located within an insulated heating block 6, to be heated to a thermostatically controlled temperature and vaporised prior to being expelled from the unit 1 via an outlet 7.
  • a switch 8 which receives an input from an intruder detection system A, of any suitable known type which is suitably part of a burglar alarm system.
  • Switch 8 which may, for example, comprise a latching relay serves to activate the pump 4 when the intruder detection system is triggered.
  • Switch 8 may be over ridden or switched off by a signal resulting from activation of a fire smoke detection system B. Furthermore, inhibit circuits may be provided to switch off or over ride the switch 8 in response to switching off of the burglar alarm system which the intruder detection system complements or forms part of. This will prevent accidental activation of the smoke screen generator during daylight hours when the building is normally occupied
  • the intruder detection system is. in the illustrated embodiment shown as being external to the unit 1, it may, if desired, be formed integrally with the unit 1, making the unit 1 a wholly self-contained system enabling the unit to be positioned in a wide range of locations.
  • the sensor is suitably of an infrared or microwave transmitting and receiving nature.
  • the unit 1 suitably also incorporates its own internal power supply which is suitably a 12 volt battery. This may serve as a back-up power supply in case of failure of the external mains electricity power supply.
  • An indicator panel is suitably provided on the unit 1, or, more preferably on the main burglar alarm system control panel to indicate the operational status of the unit 1 and display outputs from fault detection sensors provided in the unit 1 for detecting power failure or malfunction of the heater block 6.
  • the indicator panel suitably also displays an output from a reservoir level senses in the unit 1 which sensors the level of fluid within the tank 2 to warn of depletion.
  • the intruder detection system may be configured to activate the smoke-generating unit 1 when the intruder breaks the perimeter of the building prior to entering the room in which the unit 1 is installed. By doing so the room will be effectively smoke-filled, preventing vision, even before the burglar enters that room.
  • Attainment and maintenance of a satisfactory level of smoke screen density is achieved through feed-back control of the rate of vapour production by the unit 1.
  • One or preferably a plurality of smoke screen density sensors 10 sense the density of the generated smoke screen. These are similar to the sensors used in conventional fire safety smoke detectors employing infrared transmissions and utilizing the Tyndle effect of light dispersion to sense smoke. Unlike conventional smoke detector sensors, however, because the threshold level of smoke screen density for triggering the system to activate it to produce more smoke is suitably around 450 mg of Glycol vapour per cubic metre of air, the sensitivity setting of the relay switch 1 in each sensor 10 which activates the system is suitably lower than conventional. Additionally, the rate at which the sensors 10 sample is faster than conventional, being of the order of once per second to three times per second.
  • a control unit 9 having comparator circuits controls the duration of operation and rate at which the piston pump 4 pumps the liquid mixture from the tank 2 and hence controls the rate of vapour generation.
  • Use of a triac in the control unit 9 provides not only an on off control but also continuously variable adjustablity of the rate of pumping. This variable adjustability enables economical use of the stored glycol mixture.
  • control unit 9 When the smoke screen generating system is first activated in response to triggering of the intruder detection system A the control unit 9 will provide power to the piston pump 4 such that the piston pump will operate.
  • the smoke sensors 10 are suitably independent of the unit 1 and operatively linked thereto by one or more electrical cables. By provision of the sensors 10 independently of the unit 1, substantial flexibility in the arrangement of the system is obtained. Amongst other factors, the independent positionability of the sensors enables adjustment by that means of the sensitivity of the system to the smoke screen density.
  • temperature sensors 13 are provided to sense the temperature of the heating block 6 and send control inputs to the triac of the control unit 9 to adjust the rate of operation of the pump 4 to correspond with the temperature of the heating block 6.
  • the rate of pumping of the fluid to and through the heating block 6 will initially be maintained at a low level and made to rise as the temperature of the heating block 6 rises.
  • a number of smoke-generating units may be inter-linked and connected to one or more sensors at a range of locations to provide optimal coverage of an area to be enshrouded in the smoke screens.
  • a suitable configuration of the smoke-generating units 1 and the sensors 10 may be arrived at to ensure that no area of a room is vulnerable to dispersion of the smoke screen by opening of doors or windows or the like.
  • a long-lasting dense fog may be produce with little or no residue being deposited on the exposed surfaces of the room, leaving the room practically untouched by smoke once it has been dispersed and the smoke being totally innocuous to occupants of the room.
  • a smoke screen of this nature is ideal for the purpose in question.
  • Variation of the composition of the mixture by, for example, changing the glycol used or altering the water content, provides further selectability of the duration of persistence of the generated smoke screen.

Claims (7)

  1. Ein System zur Abschreckung von Eindringlingen, bei dem eine Nebelwand erzeugt wird und das aus folgenden Teilen besteht: eine Einrichtung zur Entdeckung von Eindringlingen; eine Einrichtung zur Erzeugung der Nebelwand; eine Aktivierungseinrichtung, die mit der Einrichtung zur Entdeckung von Eindringlingen und der Einrichtung zur Erzeugung der Nebelwand operativ verbunden ist und bei Auslösen der Einrichtung zur Entdeckung von Eindringlingen die Einrichtung zur Erzeugung einer Nebelwand aktiviert; sowie eine Einrichtung zur Messung der Dichte der Nebelwand mit einem Nebelwanddichtesensor, mit deren Hilfe die Dichte gemessen und der Ausstoß der Einrichtung zur Erzeugung der Nebelwand gesteuert werden kann, um die Dichte der Nebelwand auf dem gewünschten Niveau zu halten.
  2. Ein System wie in Anspruch 1, in dem die Einrichtung zur Erzeugung der Nebelwand über eine Pumpe verfügt, deren Betriebsdauer durch die besagten Steuereinrichtungen gesteuert werden kann, um die Dichte der Nebelwand zu regulieren.
  3. Ein System wie in Anspruch 1 oder Anspruch 2, in dem die Einrichtung zur Erzeugung der Nebelwand aus einem Vorratsbehälter für eine wäßrige Flüssigkeitsverbindung sowie, davon abgehend, einem oder mehreren Zuleitungsrohren besteht, mit deren Hilfe die Flüssigkeitsverbindung zu einem Auslaß geführt wird. Das System besteht ferner aus einer dem (bzw. den) Zuleitungsrohr(en) benachbarten Heizeinrichtung zur Erhitzung der Flüssigkeitsverbindung im (bzw. in den) Zuleitungsrohr(en), um die Flüssigkeitsverbindung auf diese Weise in einen dichten Dampf umzuwandeln.
  4. Ein System wie in Anspruch 3, in dem die Flüssigkeitsverbindung aus einer Mischung von Glykol und Wasser besteht.
  5. Ein System wie in den Ansprüchen 1, 2, 3 oder 4, in dem der Sensor zur Messung der Nebelwanddichte in einem ersten Gehäuse und die Einrichtung zur Erzeugung der Nebelwand in einem anderen, vom besagten ersten Gehäuse unabhängigen Gehäuse untergebracht ist.
  6. Ein System wie in Anspruch 5, in dem der Sensor zur Messung der Nebelwanddichte und die Einrichtung zur Erzeugung der Nebelwand durch drahtlose Kommunikationseinrichtungen operativ miteinander verbunden sind.
  7. Ein System wie in Anspruch 3, 4, 5 oder 6, in dem die Einrichtung zur Erzeugung der Nebelwand über eine Pumpe verfügt, deren Betriebsgeschwindigkeit durch die besagten Steuereinrichtungen in Abhängigkeit von der Temperatur der Heizeinrichtung gesteuert werden kann.
EP93919531A 1992-09-12 1993-09-13 Einbrecher-abschrecksystem Expired - Lifetime EP0659293B1 (de)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
GB929219365A GB9219365D0 (en) 1992-09-12 1992-09-12 Intruder deterrent system
GB9219365 1992-09-12
GB9304390 1993-03-04
GB939304390A GB9304390D0 (en) 1992-09-12 1993-03-04 Intruder deterrent system
PCT/GB1993/001935 WO1994007223A1 (en) 1992-09-12 1993-09-13 Intruder deterrent system

Publications (2)

Publication Number Publication Date
EP0659293A1 EP0659293A1 (de) 1995-06-28
EP0659293B1 true EP0659293B1 (de) 1996-12-04

Family

ID=26301614

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93919531A Expired - Lifetime EP0659293B1 (de) 1992-09-12 1993-09-13 Einbrecher-abschrecksystem

Country Status (7)

Country Link
EP (1) EP0659293B1 (de)
AT (1) ATE146002T1 (de)
AU (1) AU4979293A (de)
DE (1) DE69306406T2 (de)
DK (1) DK0659293T3 (de)
GB (1) GB2270396B (de)
WO (1) WO1994007223A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7872585B2 (en) 2008-02-26 2011-01-18 Martin Professional A/S Intruder deterrent system

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0664532A1 (de) * 1994-01-21 1995-07-26 Taher Burayez Kraftfahrzeugsicherungseinrichtung
IT1280125B1 (it) * 1995-02-10 1998-01-05 Claudio Ricci Procedimento di erogazione di gas con funzione antifurto e dispositivo relativo
DE29520736U1 (de) * 1995-11-17 1996-03-07 Innovative Pyrotechnik Gmbh Vorrichtung zum Vernebeln von Räumen
DE19600359C1 (de) * 1996-01-08 1997-06-12 Delta Electronic Gmbh Nebelgerät für eine Alarmanlage
SE509966C2 (sv) * 1996-01-30 1999-03-29 Olle Ljungberg Förfarande och anordning för inbrottsskydd med rökgenerering
GB2315683B (en) * 1996-07-31 1998-09-16 Barrie Peary Device for vaporising fluids
GB9708447D0 (en) * 1997-04-26 1997-06-18 Gillrange Limited Independent intruder detection and deterrent system
DE19748422C1 (de) * 1997-11-03 1999-08-12 Daimler Chrysler Ag Sichtschutz zur Verhinderung einer Einsichtnahme für Prototypen
WO2003063104A1 (de) * 2002-01-25 2003-07-31 Kuno Borst Alarmsystem-vorrichtung
GB0502202D0 (en) * 2005-02-03 2005-03-09 Ibp Internat Ltd Tracking device
EP2444136A1 (de) * 2010-10-22 2012-04-25 Bandit NV Nebelgenerator mit Nebelgeneratormarkierungsflüssigkeit
HUP1000685A2 (en) * 2010-12-22 2012-06-28 Balazs Bencsik Auxiliary property protection device for electronic property protection systems
ITTO20130906A1 (it) * 2013-11-08 2014-02-07 Ur Fog S R L Sistema e procedimento di controllo antiocclusione per dispositivo nebbiogeno.
ES2609752B1 (es) * 2015-10-21 2018-02-01 Carlos RIAZA CÁRCAMO Bote de humo de accionamiento automático en caso de robo
ITUA20162466A1 (it) * 2016-04-11 2016-07-11 Ur Fog S R L Dispositivo per generare nebbia e metodo di funzionamento di un tale dispositivo.
EP3319055A1 (de) 2016-11-04 2018-05-09 Verisure Sàrl Verfahren und vorrichtung zur regelung und stromversorgung eines raucherzeugers
CN106559655B (zh) * 2016-11-11 2019-08-27 公安部第三研究所 一种用于防盗抢安全烟雾系统性能指标测试的检测装置及检测方法
NL2021650B1 (en) * 2018-09-17 2020-05-07 Iron Tech B V An anti-intrusion system with a fog generator for generating fog at an intrusion event
IT202100009350A1 (it) * 2021-04-14 2022-10-14 Leonardo Holding S R L Dispositivo nebbiogeno di sicurezza

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2533726A1 (fr) * 1982-09-23 1984-03-30 Rouault Jean Dispositif autonome et telecommande permettant la diffusion cyclique et programmable d'un gaz ou d'un liquide sous pression
FR2540655B1 (fr) * 1983-02-07 1985-06-21 Poudres & Explosifs Ste Nale Installation de protection par dispersion de produits actifs
GB2247094A (en) * 1990-06-05 1992-02-19 Ronald Allan Proctor Vehicle anti-theft device
US5168544A (en) * 1991-05-31 1992-12-01 Aai Corporation Method and apparatus for controllably generating simulated smoke

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7872585B2 (en) 2008-02-26 2011-01-18 Martin Professional A/S Intruder deterrent system

Also Published As

Publication number Publication date
WO1994007223A1 (en) 1994-03-31
DE69306406T2 (de) 1997-07-10
ATE146002T1 (de) 1996-12-15
DE69306406D1 (de) 1997-01-16
EP0659293A1 (de) 1995-06-28
GB9318924D0 (en) 1993-10-27
AU4979293A (en) 1994-04-12
GB2270396B (en) 1995-01-25
GB2270396A (en) 1994-03-09
DK0659293T3 (da) 1997-05-12

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