EP0647928B1 - Passiv-Infrarot-Bewegungsmelder - Google Patents
Passiv-Infrarot-Bewegungsmelder Download PDFInfo
- 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
Links
- 238000000926 separation method Methods 0.000 claims 2
- 239000011888 foil Substances 0.000 claims 1
- 238000001514 detection method Methods 0.000 abstract description 6
- 238000011156 evaluation Methods 0.000 abstract description 2
- 230000005855 radiation Effects 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Images
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.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
- Geophysics And Detection Of Objects (AREA)
- Radiation Pyrometers (AREA)
Description
- Fig. 1
- einen infrarotempfindlichen Zweielementsensor, der auf einander gegenüberliegenden Seiten je eine infrarotempfindliche Fläche aufweist;
- Fig. 2
- eine prinzipielle Darstellung der Wärmestrahlengänge aus dem Seiten- und Frontbereich auf eine der beiden infrarotempfindlichen Flächen des Zweielementsensors unter Berücksichtigung annähernd gleicher Brennweiten der Linsenelemente einer Fresnel-Linsenanordnung;
- Fig. 3
- eine perspektivische Darstellung über die zwei gleichartig gekrümmten Spiegelflächen in unmittelbarer Nähe jeweils von einer infrarotempfindlichen Fläche eines Zweielementsensors, wobei jede gekrümmte Spiegelfläche zur Erfassung der Wärmestrahlen aus unterschiedlichen horizontalen Richtungen dient;
- Fig. 4
- eine perspektivische Darstellung der Spiegelfläche zur Verdeutlichung des Strahlenganges einer Wärmestrahlung aus unterschiedlichen vertikalen Richtungen.
Claims (6)
- Passiv-Infrarot-Bewegungsmelder für mindestens 180° Erfassungsbereich in horizontaler Richtung, bestehend aus einem Infrarot-Sensor (1) und zwei Spiegelelementen (2), einem Fresnel-Linsensystem in Form einer gekrümmten Folie (3), die zusammen mit einer Auswerteelektronik auf einer Leiterplatte (4) eine bauliche Einheit bildet, dadurch gekennzeichnet, daß der Sensor ein Zweielementsensor (1) ist, der auf einander gegenüberliegenden Seiten jeweils eine infrarotempfindliche Fläche (5) aufweist, die unmittelbar Wärmestrahlen (8) aus den zugehörigen Seitenbereichen des Melders erfassen (6) und die mittelbar Wärmestrahlen über die beidseitig vor den infrarotempfindlichen Flächen (5) angeordneten Spiegel (2) aus dem Frontbereich (7) des Melders erfassen.
- Passiv-Infrarot-Bewegungsmelder nach Anspruch 1, dadurch gekennzeichnet, daß im Seitenbereich (6) einer infrarotempfindlichen Sensorfläche (5) eine durch einen entsprechenden Abschnitt A 1 der gekrümmten Fresnel-Linse (3) fokussierte Wärmestrahlung (8) geradlinig auf die jeweils korrespondierende, infrarotempfindliche Sensorfläche (5) fällt, und daß eine fokussierte Wärmestrahlung (8) aus einem Abschnitt A 2 im Frontbereich (7) der Fresnel-Linse (3) über einen mit ihr korrespondierenden Spiegel (2) umgelenkt wird, bevor sie ebenfalls auf die jeweilige infrarotempfindliche Sensorfläche (5) fällt.
- Passiv-Infrarot-Bewegungsmelder nach Anspruch 1 und 2, dadurch gekennzeichnet, daß durch die Umlenkung der Wärmestrahlung (8) aus dem Frontbereich (7) über die Spiegel (2) der Abstand der Fresnel-Linse (3) zur Leiterplatte (4) gering gehalten wird.
- Passiv-Infrarot-Bewegungsmelder nach Anspruch 3, dadurch gekennzeichnet, daß trotz verringertem Abstand zwischen Fresnel-Linse (3) und Leiterplatte (4) im Frontbereich (7) infolge der Umlenkung der Wärmestrahlung die Linsenelemente der Fresnel-Linse (3) im Frontbereich (7) annähernd die gleiche Brennweite aufweisen wie die Linsenelemente der Fresnel-Linse im Seitenbereich (6).
- Passiv-Infrarot-Bewegungsmelder nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die beidseitig der infrarotempfindlichen Sensorflächen (5) angeordneten Spiegel (2) gleichartige Krümmungen aufweisen, wodurch die aus unterschiedlichen horizontalen Richtungen (H) durch die Fresnel-Linse (3) einfallenden Wärmestrahlen (8) stets auf die jeweilige infrarotempfindliche Sensorfläche (5) gelangen.
- Passiv-Infrarot-Bewegungsmelder nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die beiden Spiegel (2) großflächig ausgebildet sind, damit auch Wärmestrahlen (8) aus unterschiedlich vertikalen Richtungen stets auf die jeweilige infrarotempfindliche Sensorfläche (5) gelangen.
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 (de) | 1995-04-12 |
EP0647928B1 true EP0647928B1 (de) | 1999-04-07 |
Family
ID=6499316
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94113275A Expired - Lifetime EP0647928B1 (de) | 1993-10-02 | 1994-08-25 | Passiv-Infrarot-Bewegungsmelder |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0647928B1 (de) |
AT (1) | ATE178730T1 (de) |
DE (2) | DE4333707C2 (de) |
DK (1) | DK0647928T3 (de) |
Families Citing this family (7)
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 |
DE102013106852A1 (de) | 2013-07-01 | 2015-01-08 | Insta Elektro Gmbh | Elektrisches/elektronisches Installationsgerät mit Passiv-Infrarot-Bewegungsmelder |
Family Cites Families (21)
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 (de) * | 1983-01-05 | 1990-07-11 | Marcel Dipl.-Ing. ETH Züblin | Optisches Bauelement zum Umlenken optischer Strahlen |
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 |
DE3803278A1 (de) * | 1988-02-04 | 1989-08-17 | Brueck Electronic Beg Gmbh | 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 (de) * | 1991-11-15 | 1993-02-25 | Abb Patent Gmbh, 6800 Mannheim, De |
-
1993
- 1993-10-02 DE DE4333707A patent/DE4333707C2/de not_active Expired - Fee Related
-
1994
- 1994-08-25 EP EP94113275A patent/EP0647928B1/de not_active Expired - Lifetime
- 1994-08-25 DK DK94113275T patent/DK0647928T3/da active
- 1994-08-25 DE DE59408075T patent/DE59408075D1/de not_active Expired - Lifetime
- 1994-08-25 AT AT94113275T patent/ATE178730T1/de not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
DE4333707A1 (de) | 1995-04-06 |
ATE178730T1 (de) | 1999-04-15 |
DE59408075D1 (de) | 1999-05-12 |
DE4333707C2 (de) | 1996-12-05 |
DK0647928T3 (da) | 1999-10-18 |
EP0647928A1 (de) | 1995-04-12 |
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