EP0218055B1 - Détecteur de mouvement à infrarouge - Google Patents

Détecteur de mouvement à infrarouge Download PDF

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Publication number
EP0218055B1
EP0218055B1 EP86111436A EP86111436A EP0218055B1 EP 0218055 B1 EP0218055 B1 EP 0218055B1 EP 86111436 A EP86111436 A EP 86111436A EP 86111436 A EP86111436 A EP 86111436A EP 0218055 B1 EP0218055 B1 EP 0218055B1
Authority
EP
European Patent Office
Prior art keywords
detector
infrared
angle
mirror
lens
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
Application number
EP86111436A
Other languages
German (de)
English (en)
Other versions
EP0218055A1 (fr
Inventor
Gerhard Dipl.-Ing. Knaup
Norbert Dipl.-Ing. Schaaf
Fred Dipl.-Ing. Plotz
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.)
Heimann GmbH
Original Assignee
Heimann GmbH
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 Heimann GmbH filed Critical Heimann GmbH
Publication of EP0218055A1 publication Critical patent/EP0218055A1/fr
Application granted granted Critical
Publication of EP0218055B1 publication Critical patent/EP0218055B1/fr
Expired 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
    • G08B13/193—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 using focusing means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S250/00—Radiant energy
    • Y10S250/01—Passive intrusion detectors

Definitions

  • the invention relates to an infrared motion detector according to the first part of the claim.
  • Infrared motion detectors which consist of the combination of a mirror and a lens arrangement (US Pat. Nos. 3,766,539, 3,631,434). Because of the simple design of these known infrared motion detectors and the detection of radiation in only one plane, however, no perfect creep protection is guaranteed.
  • An infrared motion detector is known from US Pat. No. 3,703,718 in which there are several groups of mirror arrangements which focus the received infrared radiation on an infrared detector. For bundling, the individual mirrors of the mirror arrangements are designed as small concave mirrors, which means a considerable outlay in terms of production technology. It is also known to ensure radiation monitoring in several planes by providing a large number of detectors in a detector array and also a large number of Fresnel lenses (US Pat. No. 4,321,594). With this known infrared motion detector, too, the outlay is relatively great because of the large number of detectors and Fresnel lenses.
  • the invention is based on the object of designing an infrared motion detector of the type mentioned at the outset such that reliable creep protection can be achieved with a simple construction.
  • FIG. 1 shows an infrared detector 1 which receives infrared radiation via an optical system which is formed by a mirror 2 and a Fresnel lens 3 arranged after and in front of the infrared detector 1 in the beam direction.
  • the infrared detector 1 is inclined with respect to its axis 4 with respect to the horizontal 5 by the angle.
  • the angle of inclination of the mirror 2 with respect to the horizontal 5 is designated with ex and with respect to the axis 4 with ⁇ o.
  • the reflection angles of the mirror 2 have the designations ⁇ and ⁇ and the angle of incidence of the radiation on the infrared detector has the designation ax.
  • the focal length of the Fresnel lens 3 is designated f.
  • the focal point lies in the detector 1.
  • the room height at which the mirror 2 is arranged with its central axis is h.
  • the beam emitted by an object at a distance x at the angle y is deflected via the mirror 2 onto the Fresnel lens 3 and strikes the infrared detector 1 at the angle a x .
  • Figure 2 shows a lens / mirror combination in a schematic representation, in which the levels E2, E3 and E4 serve for remote security.
  • the plane E1 is used in conjunction with the mirror segments M1 to M5 and the Fresnel lens 3 arranged behind it in the beam direction as anti-creep protection.
  • the outer mirror segments M1 and M5 protrude from the Fresnel lens 3 in order to expand the original viewing angle of the lens from 130 ° in the close range to 180 ° .
  • FIG. 3 shows the beam path of the motion detector according to FIG. 1 not from the side as in FIG. 1, but from above. Accordingly, the x and y axes are shown here, while the z axis runs vertically in space and is perpendicular to the plane of the drawing. The angle of the incident radiation with respect to the y-axis ay is also shown in FIG.
  • the beam emanating from an object strikes the mirror 2 parallel to the x-axis (180 ° detection angle) and is deflected by the latter onto the Fresnel lens 3 such that it strikes the infrared detector 1 at the angle ay.
  • the angle ay must not be greater than half the viewing angle of the Fresnel lens 3.
  • FIG. 4 illustrates the ranges of the individual planes E1 to E4 according to FIG. 2.
  • the lens-mirror combination is designated by 2.3.
  • FIG. 4 also shows that up to a distance of approximately 0.4 m from the vertical of the motion detector, detection of the infrared radiation emanating from an object is ensured.
  • the angle 26 ° is 5 times, the angle 18.6 ° 7 times, the angle 7.8 ° 31 times and the angle 11.8 ° 11 times.
  • FIG. 6 shows the detection zones of the anti-creep protection extended to a 180 ° viewing angle, which is implemented in plane E1.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Burglar Alarm Systems (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)

Claims (1)

  1. Détecteur de mouvement a infrarouge comportant un détecteur à infrarouge (1) et un système optique (2, 3, M1 à M5), disposé en avant du détecteur dans la direction du rayonnement et servant à focaliser le rayonnement infrarouge sur le détecteur (1), le système optique (2, 3, M1 à M5) étant formé par un dispositif à miroirs et par un dispositif de lentilles (3), disposé en arrière du dispositif a miroirs et en avant du détecteur (1) dans la direction du rayonnement, caractérisé par le fait que le dispositif a miroirs est constitué par plusieurs éléments de miroirs plans (M1à M5), qui sont disposés côte-à-côte de manière à contrôler le plan (E1) de protection contre le passage d'une personne rampant en-dessous du détecteur et qu'une lentille de Fresnel commune (3) et un détecteur commun (1) sont prévus pour tous les éléments de miroirs plans (M1 à M5). 1
EP86111436A 1985-09-02 1986-08-19 Détecteur de mouvement à infrarouge Expired EP0218055B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3531333 1985-09-02
DE3531333 1985-09-02

Publications (2)

Publication Number Publication Date
EP0218055A1 EP0218055A1 (fr) 1987-04-15
EP0218055B1 true EP0218055B1 (fr) 1989-11-08

Family

ID=6279958

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86111436A Expired EP0218055B1 (fr) 1985-09-02 1986-08-19 Détecteur de mouvement à infrarouge

Country Status (4)

Country Link
US (1) US4752769A (fr)
EP (1) EP0218055B1 (fr)
JP (1) JPS6251482U (fr)
DE (1) DE3666887D1 (fr)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2614984A1 (fr) * 1987-05-05 1988-11-10 Argamakoff Aleksy Detecteur automatique d'incendies de foret
US4841284A (en) * 1987-10-19 1989-06-20 C & K Systems, Inc. Infrared intrusion detection system incorporating a fresnel lens and a mirror
CH676642A5 (fr) * 1988-09-22 1991-02-15 Cerberus Ag
US5066855A (en) * 1990-01-24 1991-11-19 Intelectron Infrared intrusion detector
US5200624A (en) * 1991-09-09 1993-04-06 Pittway Corporation Wide-angle radiant energy detector
US5393978A (en) * 1993-02-04 1995-02-28 Schwarz; Frank Infrared detectors having front and rear fields of view
US5453622A (en) * 1993-10-05 1995-09-26 Larry C. Y. Lee Wide-angle motion detector with close-in, prismoidal reflector
US5418368A (en) * 1993-10-05 1995-05-23 Intelectron Products Company Wide-angle motion detector with close-in reflector
US5414255A (en) * 1993-11-08 1995-05-09 Scantronic Limited Intrusion detector having a generally planar fresnel lens provided on a planar mirror surface
GB2286042B (en) * 1994-01-27 1998-07-29 Security Enclosures Ltd Wide-angle infra-red detection apparatus
US5662411A (en) * 1995-03-20 1997-09-02 Regent Lighting Corporation Motion activated light fixture with fixed sensor
US5764146A (en) * 1995-03-29 1998-06-09 Hubbell Incorporated Multifunction occupancy sensor
US5693943A (en) * 1996-05-02 1997-12-02 Visionic Ltd. Passive infrared intrusion detector
CA2196014C (fr) * 1997-01-27 2001-05-08 Reinhart Karl Pildner Detecteur de mouvement passif a infrarouge a deux elements permettant la discrimination de tailles
DE69802164T2 (de) * 1997-01-27 2002-06-13 Digital Security Controls Ltd., Downsview Grössenunterscheidender doppelelement-pir-detektor
IL127407A (en) * 1998-12-06 2004-07-25 Electronics Line E L Ltd Infrared intrusion detector and method
CA2300644C (fr) * 2000-03-10 2009-07-14 Digital Security Controls Ltd. Detecteur de mouvement passif a infrarouge a l'epreuve des animaux de compagnie
JP2002365131A (ja) * 2001-05-24 2002-12-18 Interquartz Malaysia Bhd Representative Office 広範囲検出器及びその検出範囲拡大方法
TWI259980B (en) 2003-09-01 2006-08-11 Primax Electronics Ltd Method and apparatus for real-time determining compatibility of an optical mouse with respect to a working surface
US7375313B2 (en) 2003-11-29 2008-05-20 Eml Technologies Llc Aimable motion-activated lighting fixture with angulated field
JP4214523B2 (ja) * 2004-02-27 2009-01-28 オプテックス株式会社 受動型赤外線感知器
US20130043396A1 (en) * 2011-08-19 2013-02-21 Ninve Jr. Inc. Motion detector with hybrid lens
CN104204743B (zh) 2011-11-16 2017-04-12 泰科消防及安全有限公司 运动检测系统和方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3631434A (en) * 1969-10-08 1971-12-28 Barnes Eng Co Passive intrusion detector
US3703718A (en) * 1971-01-07 1972-11-21 Optical Coating Laboratory Inc Infrared intrusion detector system
US3766539A (en) * 1972-05-01 1973-10-16 Us Army Automatic personnel intrusion alarm
US4321594A (en) * 1979-11-01 1982-03-23 American District Telegraph Company Passive infrared detector
CH650604A5 (de) * 1980-10-24 1985-07-31 Cerberus Ag Optische anordnung fuer einen infrarot-einbruchdetektor.
DE3235250C3 (de) * 1982-09-23 1996-04-25 Maul & Partner Gmbh Wirtschaft Facettenoptik zum Erfassen von Strahlung aus einem großen Raumwinkel, insbesondere für Bewegungsmelder
JPS59228136A (ja) * 1983-06-10 1984-12-21 King Tsushin Kogyo Kk 受動型赤外線侵入検出装置
US4588988A (en) * 1984-06-06 1986-05-13 The United States Of America As Represented By The Secretary Of The Air Force Intrusion barrier and detection apparatus

Also Published As

Publication number Publication date
DE3666887D1 (en) 1989-12-14
US4752769A (en) 1988-06-21
EP0218055A1 (fr) 1987-04-15
JPS6251482U (fr) 1987-03-31

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