EP0647928B1 - Détecteur passif de mouvement à infrarouge - Google Patents

Détecteur passif de mouvement à infrarouge Download PDF

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Publication number
EP0647928B1
EP0647928B1 EP94113275A EP94113275A EP0647928B1 EP 0647928 B1 EP0647928 B1 EP 0647928B1 EP 94113275 A EP94113275 A EP 94113275A EP 94113275 A EP94113275 A EP 94113275A EP 0647928 B1 EP0647928 B1 EP 0647928B1
Authority
EP
European Patent Office
Prior art keywords
infra
red
fresnel lens
movement detector
sensor
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
EP94113275A
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German (de)
English (en)
Other versions
EP0647928A1 (fr
Inventor
Peter Dipl.-Ing. Wiffel
Hans-Heinrich Dipl.-Ing. Behrmann
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.)
Insta Elektro GmbH and Co KG
Original Assignee
Insta Elektro GmbH and Co KG
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 Insta Elektro GmbH and Co KG filed Critical Insta Elektro GmbH and Co KG
Publication of EP0647928A1 publication Critical patent/EP0647928A1/fr
Application granted granted Critical
Publication of EP0647928B1 publication Critical patent/EP0647928B1/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
    • G08B13/18—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

Definitions

  • the invention relates to a passive infrared motion detector for at least 180 ° detection area according to Preamble of claim 1.
  • a motion detector of the generic type is known. It consists essentially of an infrared sensitive Sensor that together with two mirror elements on one Carrier is arranged.
  • the carrier is arched Lens assembly closed. To an optimally wide-angle Enable detection of the area to be monitored, become the incident rays on surfaces of the mirror elements directed, creating an analog assignment of Beam direction of incidence and mirror surfaces realized becomes.
  • This method with a single sensor and two Mirror surfaces required in conjunction with a lens array an allocation of the mirror surfaces aligned to the most precise with the associated lens section or individual lenses. Due to the design, this results in the room monitoring function by means of passive infrared sensitive Sensor has a high design of the curved lens arrangement.
  • EP-A-326 942 shows a detector with 2 receiving surfaces which are at an angle of more than 180 degrees to each other are enlarged Generate reception area. However, this is not yet possible cover a viewing area of 180 degrees.
  • the object of the invention is a passive infrared motion detector to design the at least 180 ° detection area in the horizontal direction if possible flat design.
  • Fig. 1 the structure of a Passive infrared motion detector shown. It is with 1 an infrared sensor in the form of a two-element sensor and with 2 are mirror elements assigned to a sensor surface 5 designated. The two-element sensor 1 and the mirror elements 2 are together with an unspecified Evaluation electronics arranged on a circuit board 4.
  • This structure is a Fresnel arrangement completed in the form of a curved film 3.
  • FIG. 1 there is an equally large, infrared-sensitive area 5 on opposite sides of the two-element sensor. These sensor areas 5 each have a reception characteristic of approximately 120 °. This can be used to capture the side areas 6. As expected, this results in a dead area in the front area 7.
  • a mirror arrangement 2 is used according to the invention. 2 shows a basic illustration of the thermal radiation 8 from the side region 6 and the front region 7 onto one of the two infrared-sensitive sensor surfaces 5 of a two-element sensor 1. From this it can be seen that the thermal radiation 8 is also received from the front area 7 and is deflected to the respective sensor surface 5 via a mirror surface 2.
  • the lens element 9 of a Fresnel lens arrangement 3 lying in the heat radiation direction in the front region 7 can move very close to the two-element sensor 1.
  • the lens elements A 1 and A 2 have approximately the same focal length.
  • the lens element A 2 is at a significantly shorter distance from the infrared-sensitive surface 5 than the lens element A 1 .
  • this arrangement is possible in that the addition of L1 and L2 results in approximately the length L3, which characterize the focal lengths of the lens elements A 1 and A 2 .
  • the beam path L1 and L2 across the mirror surface 2 results in an apparent shortening of the focal length. As can still be seen from FIG.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Radiation Pyrometers (AREA)

Claims (6)

  1. Détecteur passif de mouvement à infrarouges pour une zone de détection d'au moins 180° en direction horizontale, comprenant un détecteur à infrarouges (1) et deux éléments de miroir (2), et un système à lentille de Fresnel sous la forme d'une feuille incurvée (3), qui forment une unité structurelle conjointement avec un circuit électronique d'évaluation sur une plaque à circuits imprimés (4),
    caractérisé en ce que le détecteur est un détecteur à deux éléments (1), qui présente une surface sensible aux infrarouges (5) respective sur les côtés mutuellement opposés, lesdites surfaces captant (6) directement les rayonnements thermiques (8) provenant des zones latérales associées du détecteur, et captant indirectement les rayonnements thermiques provenant de la région frontale (7) par l'intermédiaire des miroirs (2) agencés des deux côtés devant les surfaces (5) sensibles aux infrarouges.
  2. Détecteur passif de mouvement à infrarouges selon la revendication 1, caractérisé en ce que, dans la région latérale (6) d'une surface de détection (5) sensible aux infrarouges, un rayonnement thermique (8) focalisé par un secteur correspondant A1 de la lentille de Fresnel incurvée (3) tombe en ligne droite sur la surface de détection sensible aux infrarouges (5) respective correspondante, et en ce qu'un rayonnement thermique focalisé (8) provenant d'un secteur A2 dans la région frontale (7) de la lentille de Fresnel (8) est renvoyé par un miroir qui lui correspond (2) avant de tomber également sur la surface de détection respective sensible aux infrarouges (5).
  3. Détecteur passif de mouvement à infrarouges selon l'une ou l'autre des revendications 1 et 2, caractérisé en ce que grâce au renvoi du rayonnement thermique (8) provenant de la région frontale (7) via les miroirs (2), la distance de la lentille de Fresnel (3) par rapport à la plaque à circuits imprimés (4) est maintenue faible.
  4. Détecteur passif de mouvement à infrarouges selon la revendication 3, caractérisé en ce que, malgré la réduction de la distance entre la lentille de Fresnel (3) et la plaque à circuits imprimés (4) dans la région frontale (7) en raison du renvoi du rayonnement thermique, les éléments de lentille de la lentille de Fresnel (3) présentent dans la région frontale (7) approximativement la même distance focale que les éléments de lentille de la lentille de Fresnel dans la région latérale (6).
  5. Détecteur passif de mouvement à infrarouges, selon l'une des revendications 1 à 4, caractérisé en ce que les miroirs (2) agencés des deux côtés des surfaces de détection (5) sensibles aux infrarouges présentent des courbures analogues, grâce à quoi les rayonnements thermiques (8) qui tombent à travers la lentille de Fresnel (3) en provenant de différentes directions horizontales (H) parviennent toujours sur la surface de détection sensible aux infrarouges (5) respective.
  6. Détecteur passif de mouvement à infrarouges selon l'une des revendications 1 à 5, caractérisé en ce que les deux miroirs (2) sont réalisés à grande surface, afin que les rayons thermiques (8) provenant de différentes directions verticales parviennent également toujours sur la surface de détection sensible aux infrarouges (5) respective.
EP94113275A 1993-10-02 1994-08-25 Détecteur passif de mouvement à infrarouge Expired - Lifetime EP0647928B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4333707A DE4333707C2 (de) 1993-10-02 1993-10-02 Passiv-Infrarot-Bewegungsmelder
DE4333707 1993-10-02

Publications (2)

Publication Number Publication Date
EP0647928A1 EP0647928A1 (fr) 1995-04-12
EP0647928B1 true EP0647928B1 (fr) 1999-04-07

Family

ID=6499316

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94113275A Expired - Lifetime EP0647928B1 (fr) 1993-10-02 1994-08-25 Détecteur passif de mouvement à infrarouge

Country Status (4)

Country Link
EP (1) EP0647928B1 (fr)
AT (1) ATE178730T1 (fr)
DE (2) DE4333707C2 (fr)
DK (1) DK0647928T3 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19632514A1 (de) * 1996-08-13 1998-02-19 Abb Patent Gmbh Bewegungsmelder mit mindestens einer Sammellinse
KR0176625B1 (ko) * 1996-11-05 1999-04-01 삼성전자주식회사 적외선 물체검출장치
DE19805622A1 (de) * 1998-02-12 1999-08-19 Thomson Brandt Gmbh Bewegungsmelder zum Ein- und/oder Ausschalten von einem elektronischen Gerät
DE19822053B4 (de) * 1998-05-16 2007-01-18 Insta Elektro Gmbh Fresnellinsenanordnung für Passiv-Infrarot-Bewegungsmelder
DE10019999A1 (de) * 2000-04-22 2001-10-25 Abb Patent Gmbh Passiv-Infrarot-Bewegungsmelder
DE10329358B4 (de) * 2003-06-30 2006-01-05 Insta Elektro Gmbh Elektrische/elektronische Einrichtung
DE202013012653U1 (de) 2013-07-01 2018-03-05 Insta Gmbh Elektrisches/elektronisches Installationsgerät mit Passiv-Infrarot-Bewegungsmelder

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2930632C2 (de) * 1979-07-27 1982-03-11 Siemens AG, 1000 Berlin und 8000 München Pyrodetektor
CH657928A5 (de) * 1981-11-25 1986-09-30 Eltec Instr Ag Anordnung fuer einen strahlungsdetektor mit mehreren sensorelementen und deren verwendung.
EP0113468B1 (fr) * 1983-01-05 1990-07-11 Marcel Dipl.-Ing. ETH Züblin Dispositif de déflexion des rayons optiques
DE3500860A1 (de) * 1985-01-12 1986-07-17 Klaus 8000 München Maresch Optische anordnung an passiv-infrarot-bewegungsmeldern
DE3532475A1 (de) * 1985-09-11 1987-03-19 Siemens Ag Pyrodetektor zur detektion eines in seinen detektionsbereich eintretenden koerpers
US4703171A (en) * 1985-11-05 1987-10-27 Target Concepts Inc. Lighting control system with infrared occupancy detector
DE3616374A1 (de) * 1986-05-15 1987-11-19 Siemens Ag Pyrodetektor, vorzugsweise geeignet fuer bewegungs- und richtungsselektives detektieren
US4769545A (en) * 1986-11-26 1988-09-06 American Iris Corporation Motion detector
GB8711609D0 (en) * 1987-05-16 1987-06-24 Wild G Optical detector
DE8816609U1 (de) * 1988-02-04 1990-01-11 B.E.G. Brück Electronic GmbH, 5253 Lindlar Infrarot-Signalgeber
GB2215454B (en) * 1988-03-09 1991-09-11 Racal Guardall Security sensors
DE3812969A1 (de) * 1988-04-19 1989-11-02 Merten Gmbh & Co Kg Geb Infrarot-bewegungsmelder
US4876445A (en) * 1988-05-16 1989-10-24 Nvtek Security Products, Inc. Intrusion detection device with extended field of view
DE3818715A1 (de) * 1988-06-01 1989-12-14 Siemens Ag Pyrodetektor mit weitwinkelzusatz
DE8910920U1 (de) * 1989-09-13 1989-11-02 EVERSPRING INDUSTRY Co., Ltd., Taipei City, Tu Cheng Hsiang Optische Strahlablenkvorrichtung zur Vergrößerung des Meßwinkels eines Detektors
US5107120A (en) * 1989-09-22 1992-04-21 Pennwalt Corporation Passive infrared detector
DE3932943A1 (de) * 1989-10-03 1991-04-11 Asea Brown Boveri Passiv-infrarot-bewegungsmelder
US5017783A (en) * 1989-10-25 1991-05-21 C & K Systems, Inc. 360 degree field of view optical sensing device
DE3942830C2 (de) * 1989-12-23 1999-03-04 Asea Brown Boveri Passiv-Infrarot-Bewegungsmelder
DE4100536A1 (de) * 1991-01-10 1992-07-16 Hochkoepper Paul Gmbh Infrarotbewegungsmelder
DE4137560C1 (fr) * 1991-11-15 1993-02-25 Abb Patent Gmbh, 6800 Mannheim, De

Also Published As

Publication number Publication date
DK0647928T3 (da) 1999-10-18
EP0647928A1 (fr) 1995-04-12
ATE178730T1 (de) 1999-04-15
DE59408075D1 (de) 1999-05-12
DE4333707A1 (de) 1995-04-06
DE4333707C2 (de) 1996-12-05

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