EP0148368A2 - Avertisseur de mouvement - Google Patents

Avertisseur de mouvement Download PDF

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Publication number
EP0148368A2
EP0148368A2 EP84113683A EP84113683A EP0148368A2 EP 0148368 A2 EP0148368 A2 EP 0148368A2 EP 84113683 A EP84113683 A EP 84113683A EP 84113683 A EP84113683 A EP 84113683A EP 0148368 A2 EP0148368 A2 EP 0148368A2
Authority
EP
European Patent Office
Prior art keywords
radiation receiver
radiation
motion detector
detector according
connecting part
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.)
Withdrawn
Application number
EP84113683A
Other languages
German (de)
English (en)
Other versions
EP0148368A3 (fr
Inventor
Hermann Dipl.-Ing. Zierhut
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.)
Richard Hirschmann Radiotechnisches Werk
Original Assignee
Richard Hirschmann Radiotechnisches Werk
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 Richard Hirschmann Radiotechnisches Werk filed Critical Richard Hirschmann Radiotechnisches Werk
Publication of EP0148368A2 publication Critical patent/EP0148368A2/fr
Publication of EP0148368A3 publication Critical patent/EP0148368A3/fr
Withdrawn legal-status Critical Current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 a motion detector which responds to electromagnetic radiation, in particular in the infrared range, with optics designed as concave mirrors for bundling the radiation arriving from visual fields of horizontal and vertical planes of the monitoring area onto a radiation receiver and a connecting part, at one end of which the concave mirror and in front of it another, the input opening adjacent end of the radiation receiver is arranged.
  • Such a motion detector with a spherical concave mirror is known from DE-OS 31 19 720.
  • DE-OS 31 19 720 Such a motion detector with a spherical concave mirror is known from DE-OS 31 19 720.
  • several visual fields are generated by reflecting inner surfaces of the connecting part inclined to the optical axis.
  • the number of visual fields in the vertical plane that can be achieved with this method is sufficient for the monitoring of smaller spatial areas, but not for long ranges of e.g. up to 200 m, because even at a short distance from the motion detector, the mutual vertical distances of the visual fields are so large that unwanted intruders are able to walk through the surveillance area unidentifiable, possibly even upright.
  • the certainty of tripping due to the small number of horizontal visual fields is not sufficient in some applications.
  • the production of this connecting part is more complex than that with walls parallel to one another.
  • the object of the invention is therefore to create a motion detector according to the preamble of claim 1, in which to generate more fields of view in the horizontal and vertical planes of the surveillance area in the simplest and most cost-effective manner without spatial enlargement and with the same number of sensors.
  • At least one mirror which is arranged divergingly from the input of the radiation receiver in the direction of the concave mirror at an angle of between 0 ° and 20 ° to the optical axis of the radiation receiver and is assigned to the horizontal or vertical visual field planes is provided.
  • This very simple measure in terms of production technology means that there is no significant additional effort, even when using a connecting part with inner walls that are parallel to one another, that there is more security against tripping due to more transitions from inside to outside the visual fields or vice versa, spatial areas in the horizontal plane of the surveillance area and a denser occupancy of the vertical plane with visual fields and therefore a greater range is achieved, such as is required for the effective monitoring of long high-bay storage streets.
  • a further multiplication of the figure, limited by the entrance opening, can be achieved in a simple manner by designing the connecting part according to claim 5. This makes it possible, for example, to create the dense curtain of visual fields (radiation subjects) required for very long ranges in the vertical plane by mirroring the relevant inner walls of the connecting part.
  • an embodiment of the motion detector according to the invention as claimed in claim 6 is particularly advantageous, because in this way an optimal solid angle occupancy is achieved with full use of the opening of commercially available detectors.
  • the number of fields of view is tripled in each level and thus five times the alarm trigger security (five alarm options through five transitions from positive to negative voltages at the output of the radiation receiver or vice versa) and one tripling the Fields of view in the vertical plane achieved correspondingly greater range.
  • An embodiment of the motion detector according to the invention according to claim 7 enables an extremely flat structure of the device, which can thereby be attached inconspicuously to the wall and may even be suitable for installation in standard flush-mounted boxes.
  • the radiation receiver in the plane relevant to the vertical fields of view is expediently offset so far from the rear wall of the connecting part that the edge of the mirror bears against it.
  • the dimensioning specified in claim 8 results in such a dense radiation fan in the vertical plane that an unnoticed passage through a human body is practically impossible.
  • the facial fields can advantageously be stretched in a (for example the vertical) plane to overlap and thus a completely tight curtain can be produced without mirroring the inner surfaces of the connecting part.
  • FIG. 1 shows a partially sectioned view of the front
  • FIG. 2 shows a section perpendicular to it, with an example drawn course of one of the visual fields marked by lines for simplicity.
  • the motion detector consists of a metallic, cross-sectionally rectangular connecting part 1, each with two mutually parallel inner surfaces, a spherical concave mirror 3 fixed at one end by a closure piece 2 of the connecting part 1, and a two infrared sensors 4 connected in push-pull having radiation receiver, the input opening in a transverse wall 5 of the connecting part 1 and the electronic circuit, not shown, is arranged in a chamber 6 between the transverse wall 5 and the closed other end of the connecting part 1.
  • the sensors 4 have a length and a mutual distance of 3 mm.
  • the concave apex and the entrance opening of the radiation receiver are centered and have a common optical axis, in the plane perpendicular thereto, on the one hand, the optical axis of the radiation receiver is offset so far towards the rear wall 9 that the free end part of the mirror adjacent to it 10 just lies on its inner surface - and on the other hand the vertex of the concave mirror 3 is offset towards the rear wall 9 in such a way that the total distances between the optical axis of the radiation receiver, that of the optics, and the front wall of the connecting part from its rear wall to one another in a ratio of 2: 3: 7 stand.
  • a parallel beam (field of view) 14 can penetrate into the connecting part 1 in the vertical plane at the angles indicated by simple lines, where it is either direct or by reflection on a arranged at 45 ° deflecting mirror 1 5 and / or at the reflective inner surfaces of the front wall 8 and rear wall 9 of the connecting part 1 to the concave mirror 3, and from there - where appropriate, by further reflections at the inner surfaces of the front wall 8 and rear wall 9 - through an opening 16 of the deflecting mirror 15 and possibly further reflections on the mirrors 10 are sharply focused on the sensors 4.
  • the four mirrors 10, 11 bring about a tripling (ie a total of nine times more) of the visual fields 1 4 in each level in a very simple and cost-effective manner.
  • a further multiplication of the visual fields 14 is generated in the vertical plane by mirrored inner surfaces of the front and rear walls 8, 9, the distances of which are so small even at a distance of 100 m that an unnoticed passage through the surveillance area occurs an unwanted intruder is practically impossible.
  • the inner surfaces of the side walls 7 of the connecting part 1, on the other hand, are not mirrored, so that it remains in the horizontal plane when the field of view 14 triples per sensor, which already provides a five times higher triggering security and is completely sufficient in the application. If, however, it is even larger in individual cases, multiplication is also readily possible here by mirroring the inner surfaces of the side walls 7.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Burglar Alarm Systems (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
  • Geophysics And Detection Of Objects (AREA)
EP84113683A 1983-12-23 1984-11-13 Avertisseur de mouvement Withdrawn EP0148368A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19833346699 DE3346699A1 (de) 1983-12-23 1983-12-23 Bewegungsmelder
DE3346699 1983-12-23

Publications (2)

Publication Number Publication Date
EP0148368A2 true EP0148368A2 (fr) 1985-07-17
EP0148368A3 EP0148368A3 (fr) 1987-11-25

Family

ID=6217892

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84113683A Withdrawn EP0148368A3 (fr) 1983-12-23 1984-11-13 Avertisseur de mouvement

Country Status (4)

Country Link
US (1) US4645930A (fr)
EP (1) EP0148368A3 (fr)
JP (1) JPS60157694A (fr)
DE (1) DE3346699A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE122167T1 (de) * 1986-12-01 1995-05-15 Legrand Electric Limited Reg N Besetzungsdetektoren etc.
US4939359A (en) * 1988-06-17 1990-07-03 Pittway Corporation Intrusion detection system with zone location
US5003293A (en) * 1989-10-02 1991-03-26 Compunic Electronics Co., Ltd. Billboard with audio message spreading function
US6037593A (en) * 1998-03-03 2000-03-14 Ledalite Architectural Products, Inc. Catoptric optical system for detecting motion of a radiant source
EP1116963B1 (fr) * 2000-01-14 2013-03-06 Keyence Corporation Détecteur photo-électrique
US8138478B2 (en) * 2005-03-21 2012-03-20 Visonic Ltd. Passive infra-red detectors
WO2008012805A2 (fr) * 2006-07-27 2008-01-31 Visonic Ltd Détecteurs infrarouge passifs
GB2509884B (en) 2011-11-16 2018-10-17 Tyco Fire & Security Gmbh Motion detection systems and methodologies

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3958118A (en) * 1975-02-03 1976-05-18 Security Organization Supreme-Sos-Inc. Intrusion detection devices employing multiple scan zones
US4087688A (en) * 1976-06-16 1978-05-02 Cerberus Ag Infrared radiation-burglary detector
GB1564457A (en) * 1975-06-16 1980-04-10 Cerberus Ag Infrared intrusion detectors
EP0065159A2 (fr) * 1981-05-18 1982-11-24 Richard Hirschmann Radiotechnisches Werk Détecteur de mouvement pour contrôler des places
EP0080114A1 (fr) * 1981-11-25 1983-06-01 Eltec Instruments AG Détecteur de rayonnement avec plusieurs éléments sensibles

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4318089A (en) * 1980-03-24 1982-03-02 David Frankel Infrared detector system
GB2077426B (en) * 1980-05-30 1983-12-14 Fuji Electric Co Ltd Apparatus for measuring film thickness

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3958118A (en) * 1975-02-03 1976-05-18 Security Organization Supreme-Sos-Inc. Intrusion detection devices employing multiple scan zones
GB1564457A (en) * 1975-06-16 1980-04-10 Cerberus Ag Infrared intrusion detectors
US4087688A (en) * 1976-06-16 1978-05-02 Cerberus Ag Infrared radiation-burglary detector
EP0065159A2 (fr) * 1981-05-18 1982-11-24 Richard Hirschmann Radiotechnisches Werk Détecteur de mouvement pour contrôler des places
EP0080114A1 (fr) * 1981-11-25 1983-06-01 Eltec Instruments AG Détecteur de rayonnement avec plusieurs éléments sensibles

Also Published As

Publication number Publication date
EP0148368A3 (fr) 1987-11-25
US4645930A (en) 1987-02-24
DE3346699A1 (de) 1985-07-04
JPS60157694A (ja) 1985-08-17

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Inventor name: ZIERHUT, HERMANN, DIPL.-ING.