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EP1107204A2 - Système de surveillance infrarouge - Google Patents

Système de surveillance infrarouge Download PDF

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Publication number
EP1107204A2
EP1107204A2 EP00308422A EP00308422A EP1107204A2 EP 1107204 A2 EP1107204 A2 EP 1107204A2 EP 00308422 A EP00308422 A EP 00308422A EP 00308422 A EP00308422 A EP 00308422A EP 1107204 A2 EP1107204 A2 EP 1107204A2
Authority
EP
European Patent Office
Prior art keywords
infra
detector
signal
red
signal generator
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.)
Ceased
Application number
EP00308422A
Other languages
German (de)
English (en)
Other versions
EP1107204A3 (fr
Inventor
Charles Harold Barker
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
Application filed by Individual filed Critical Individual
Publication of EP1107204A2 publication Critical patent/EP1107204A2/fr
Publication of EP1107204A3 publication Critical patent/EP1107204A3/fr
Ceased legal-status Critical Current

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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
    • G08B13/18—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength
    • G08B13/189—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems
    • G08B13/19—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using infrared-radiation detection systems

Definitions

  • the present invention relates to an infra-red monitoring system, and relates particularly, but not exclusively, to an infra-red intruder detection system.
  • Intruder detection systems are known in which premises to be guarded are monitored by means of one or more passive infra-red detectors.
  • the elevated body temperature of an intruder compared with the surroundings causes the emission of infra red radiation, which can be detected by one or more of the passive infra-red detectors, and an alarm signal generated as a result.
  • known monitoring systems of the above type suffer from the drawback that false alarms are often generated for example by animals.
  • known intruder detection systems generally do not provide information regarding the location of the intruder, as a result of which the intruder may escape as a result of the time taken to locate the intruder.
  • Preferred embodiments of the present invention seek to overcome the above disadvantages of the prior art.
  • an infra-red monitoring system comprising:
  • this provides the advantage that the system can be adapted to detect subjects of a particular type, for example by detecting a range corresponding to human body temperature distributed over a region corresponding to the size of a human body.
  • false alarms caused by, for example, animals of comparable size to humans but having different body temperature, or tanks of industrial liquid having similar temperature to human body temperature, but distributed over different volumes, are minimised.
  • the signal generator means may generate an audible and/or visible alarm signal.
  • the signal generator means may automatically send an alarm signal to a remote location.
  • the signal generator means automatically sends an alarm signal to control centre at a remote location.
  • At least one said detector device may comprise a respective passive infra-red detector.
  • said detector means comprises at least one pair of said detector devices arranged at a respective location, and the signal generator means only generates an alarm signal in response both detector devices of a said pair indicating the temperature of an object lying within predetermined limits.
  • This provides the advantage of minimising the incidences of false alarms, for example as a result of malfunction of one or more of the detector devices.
  • the system may further comprise tamper detection means.
  • the system is adapted to generate at least one second signal containing information indicating location and time of detection.
  • This provides the advantage of enabling the position of an intruder to be monitored over time which, in the case of a region covering a large area, enables an intruder to be located as quickly as possible.
  • An intruder monitoring apparatus 1 has a series of passive infra-red detectors 2 spread over an area to be monitored, for example a factory or industrial site to be guarded against intruders.
  • the passive infra-red detectors 2 are adapted to detect emitted infra red radiation over a range of -20 to +70 degrees Celsius and are provided in pairs at each location.
  • Each pair of detectors 2 sends output signals to a processor 3, such as a micro processor, the output signals containing information relating to the temperature of an objects emitting radiation within the range of a detector 2, and the size of the object (for example, as a result of the angle over which radiation within a given temperature range is received at a detector 2).
  • the processor 3 In order to minimise the incidence of false alarms through malfunction of a detector 2, the processor 3 only processes signals from a particular location if the signals from each pair of detectors 2 indicate substantially the same object.
  • the output signal from each detector 2 contains information regarding the range of temperatures detected by the detector 2, as well as the temperature of sectors into which the field of view of the detector 2 is divided.
  • the processor 3 can detect whether a continuous part of the region to be monitored, for example corresponding to the dimensions of a human body, lies within a range of temperatures including normal human body temperature. If such a situation is detected, the processor 3 sends an output signal to alarm means 4, which generates an audible signal at the region being monitored, or sends an alarm call to a remote location via a radio antenna 5 or the public telephone network 6.
  • the processor also generates a signal indicating the time at which an intruder is detected by a particular detector 2. This enables the system to monitor the movement of an intruder so that the intruder can be located as quickly as possible.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Burglar Alarm Systems (AREA)
  • Geophysics And Detection Of Objects (AREA)
EP00308422A 1999-12-11 2000-09-26 Système de surveillance infrarouge Ceased EP1107204A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB9929287.2A GB9929287D0 (en) 1999-12-11 1999-12-11 Infra-red monitoring system
GB9929287 1999-12-11

Publications (2)

Publication Number Publication Date
EP1107204A2 true EP1107204A2 (fr) 2001-06-13
EP1107204A3 EP1107204A3 (fr) 2002-08-14

Family

ID=10866115

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00308422A Ceased EP1107204A3 (fr) 1999-12-11 2000-09-26 Système de surveillance infrarouge

Country Status (2)

Country Link
EP (1) EP1107204A3 (fr)
GB (1) GB9929287D0 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005068896A1 (fr) * 2004-01-12 2005-07-28 Michael Alexander Trzecieski Dispositif de securite pour operateur, destine a une machine comportant des instruments tranchants
WO2008002555A3 (fr) * 2006-06-26 2008-06-05 Qualex Mfg Lc Procédé et appareil de détection de conditions dangereuses
US8101917B2 (en) 2006-06-26 2012-01-24 Qualex Manufacturing Llc Method and apparatus for detecting unsafe conditions
US8314393B2 (en) 2008-12-23 2012-11-20 Qualex Manufacturing, Lc Method and apparatus for detecting unsafe conditions
WO2018060687A1 (fr) * 2016-09-27 2018-04-05 Downey Graham Anthony Améliorations apportées à des systèmes d'alarme
WO2018060686A1 (fr) * 2016-09-27 2018-04-05 Downey Graham Anthony Améliorations de systèmes de d'alarme

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3369019D1 (en) * 1982-10-01 1987-02-12 Cerberus Ag Infrared detector for spotting an intruder in an area
US4962473A (en) * 1988-12-09 1990-10-09 Itt Corporation Emergency action systems including console and security monitoring apparatus
DE3932681C2 (de) * 1989-09-29 2002-03-07 Siemens Ag Hochfehlalarmsicheres Objektsicherungssystem mit einer Vielzahl von Passiv-Infrarot-(IR)-Sensoren
EP1026521B1 (fr) * 1995-04-12 2004-09-29 Matsushita Electric Industrial Co., Ltd. Méthode et appareil pour détecter un objet
US5670943A (en) * 1996-02-26 1997-09-23 Detection Systems, Inc. Pet immune intruder detection

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005068896A1 (fr) * 2004-01-12 2005-07-28 Michael Alexander Trzecieski Dispositif de securite pour operateur, destine a une machine comportant des instruments tranchants
WO2008002555A3 (fr) * 2006-06-26 2008-06-05 Qualex Mfg Lc Procédé et appareil de détection de conditions dangereuses
US7439512B2 (en) 2006-06-26 2008-10-21 Qualex Manufacturing Llc Method and apparatus for detecting unsafe conditions
US8101917B2 (en) 2006-06-26 2012-01-24 Qualex Manufacturing Llc Method and apparatus for detecting unsafe conditions
CN101528382B (zh) * 2006-06-26 2012-10-03 夸里科斯制造有限公司 用于检测不安全情况的方法和装置
US8314393B2 (en) 2008-12-23 2012-11-20 Qualex Manufacturing, Lc Method and apparatus for detecting unsafe conditions
WO2018060687A1 (fr) * 2016-09-27 2018-04-05 Downey Graham Anthony Améliorations apportées à des systèmes d'alarme
WO2018060686A1 (fr) * 2016-09-27 2018-04-05 Downey Graham Anthony Améliorations de systèmes de d'alarme
GB2568856A (en) * 2016-09-27 2019-05-29 Anthony Downey Graham Improvements in alarm systems
GB2568855A (en) * 2016-09-27 2019-05-29 Anthony Downey Graham Improvements in alarm systems
GB2568856B (en) * 2016-09-27 2022-12-21 Anthony Downey Graham Improvements in alarm systems
GB2568855B (en) * 2016-09-27 2023-02-08 Anthony Downey Graham Improvements in alarm systems

Also Published As

Publication number Publication date
EP1107204A3 (fr) 2002-08-14
GB9929287D0 (en) 2000-02-02

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