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WO2008031739A1 - Cellule photoélectrique à orientation ajustable en particulier pour barrières optiques - Google Patents

Cellule photoélectrique à orientation ajustable en particulier pour barrières optiques Download PDF

Info

Publication number
WO2008031739A1
WO2008031739A1 PCT/EP2007/059210 EP2007059210W WO2008031739A1 WO 2008031739 A1 WO2008031739 A1 WO 2008031739A1 EP 2007059210 W EP2007059210 W EP 2007059210W WO 2008031739 A1 WO2008031739 A1 WO 2008031739A1
Authority
WO
WIPO (PCT)
Prior art keywords
photocell
enclosure
photocell according
support
optical
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
PCT/EP2007/059210
Other languages
English (en)
Inventor
Oliviero Arosio
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.)
GI BI DI Srl
GI BI DI Continental SpA
Original Assignee
GI BI DI Srl
GI BI DI Continental SpA
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 GI BI DI Srl, GI BI DI Continental SpA filed Critical GI BI DI Srl
Priority to EP07803189A priority Critical patent/EP2087381A1/fr
Publication of WO2008031739A1 publication Critical patent/WO2008031739A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • G08B13/181—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using active radiation detection systems
    • G08B13/183—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using active radiation detection systems by interruption of a radiation beam or barrier
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
    • G01D11/24—Housings ; Casings for instruments
    • G01D11/245—Housings for sensors
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V8/00—Prospecting or detecting by optical means
    • G01V8/10—Detecting, e.g. by using light barriers
    • G01V8/12—Detecting, e.g. by using light barriers using one transmitter and one receiver

Definitions

  • the present invention relates to a photocell with adjustable orientation particularly for optical barriers, of the type provided at gates, windows, entrances or others.
  • a photocell is constituted generally by an enclosure in which an optical assembly and an electronic unit for managing said optical assembly are contained.
  • the optical assembly is constituted by a bulb which is kept in vacuum or contains an inert gas and inside which a pair of electrodes is placed; the electronic management unit is generally an electronic board and comprises the power supply circuit of the optical assembly to which it is connected.
  • Each photocell is therefore constituted substantially by two electrodes: the first, known as anode, is connected to the positive pole of a direct current source, which can be for example a battery, and the second electrode, known as cathode, is connected to the negative pole of the same source.
  • the cathode is constituted by or coated with combinations of photosensitive substances, such as cesium-antimony, cesium-antimony-bismuth, cesium-silver-oxygen, copper-iodine, and cesium-iodine.
  • the cathode When the cathode, arranged so as to receive light radiation from outside, is illuminated, it emits electrons which are attracted by the positively charged anode.
  • an electric current is established within the circuit in which the photocell is inserted, and the intensity of said current is proportional to the intensity of the lighting. If the lighting of the cathode is interrupted, for example by interposing an object or a person between the light source and the cathode, said cathode interrupts the emission of electrons and the flow of current stops.
  • a photocell has the property of converting an electromagnetic radiation into an electrical signal and vice versa.
  • An optical barrier is therefore constituted by at least one pair of photocells, one acting as an emitter of an electron beam and the other acting as a receiver of said beam.
  • Photocells are used for example in alarm devices or in automated gates or in general whenever one wishes to create any optical barrier for example at a passage, entrance or others.
  • Photocells with adjustable orientation are known which allow rotation of the optical assembly at least about one axis, so as to simplify the alignment of the emitter and the receiver.
  • These known photocells with adjustable orientation generally have a spherical joint, which is interposed between the enclosure and the optical assembly, is usually integrated with the electronic management unit, and is adapted to allow the optical assembly to be oriented with respect to the enclosure.
  • the female element of the spherical joint is provided monolithically within the bottom of said enclosure and is constituted by a spherical seat, which is formed by two parts which can be mutually connected by way of locking screws and is adapted to accommodate a ball which is rigidly associated with the optical assembly and with the electronic management unit.
  • Another drawback is that the spherical joint is integrated with the enclosure of the photocell and therefore the adjustment of the angle of the optical assembly, which must be performed after the enclosure has been fixed to its supporting structure, can be sometimes difficult to perform on the part of the operator.
  • the aim of the present invention is to eliminate the above-mentioned drawbacks of the background art, by providing a photocell with adjustable orientation, particularly for optical barriers, which allows to provide easy and quick adjustment of the angle of the optical assembly on the part of the operator.
  • an object of the invention is to allow the entry of the power supply of the electronic management unit from multiple directions, so as to reduce the space occupation of the power supply assembly and keep it as protected as possible in order to accordingly limit the possibility of tampering with it.
  • Another object of the invention is to be able to install, with the smallest possible number of photocells, optical barriers having different shapes and spatial arrangements, which ensure high safety and flexibility.
  • Another object of the present, invention is to provide a photocell with adjustable orientation having a structure which is simple, relatively easy to provide in practice, safe in use, effective in operation, and has a relatively low cost.
  • the present photocell with adjustable orientation particularly for optical barriers which comprises at. least one box-like enclosure which contains at least one optical assembly which is associated with at least one electronic management unit, characterized in that it comprises at least one support with adjustable orientation for at least said optical assembly interposed between the enclosure and the optical assembly, the support being associated detachably with the enclosure.
  • Figure 1 is an exploded view of the photocell according to the invention
  • Figure 2 is a perspective view of the support with adjustable orientation of the photocell according to the invention in the assembled configuration
  • Figure 3 is a perspective view of the photocell of Figure 1 in the assembled configuration. Ways of carrying out the Invention
  • the reference numeral 1 generally designates a photocell with adjustable orientation, which can be fixed to a supporting base or directly to a wall, both not shown, by means of at least one box-like enclosure 2 made for example of plastic material.
  • the enclosure 2 comprises a plate 3 for fixing to the supporting base or to the wall and a cover 4 which is made of a material which is transparent to electronic beams, said plate and said cover being detachably associated with each other.
  • the cover 4 is shaped like a sort of tray arranged so as to cover the plate 3.
  • the photocell 1 comprises at least one optical assembly which is associated with at least one electronic management unit; both are accommodated within the enclosure 2 and are not shown in detail since they are of a known type.
  • the electronic management unit is constituted substantially by an electronic board which controls and drives the operation of the optical assembly as an emitter or as a receiver.
  • the photocell 1 further comprises at least one support 5 with adjustable orientation for at least the optical assembly, which is interposed between the enclosure 2 and said optical assembly and is associated with the enclosure 2, particularly with the plate 3, detachably.
  • the optical assembly and the electronic management unit are mutually integrated and associated with the support 5.
  • the reference numeral 6 indicates the optical assembly and the electronic management unit, which are mutually integrated.
  • the photocell 1 comprises a spherical joint 7, which is interposed between the enclosure 2 and the support 5 to adjust the orientation of said support with respect to the enclosure 2.
  • the spherical joint 7 comprises a male element 8, which is substantially hemispherical and is for example hollow internally and provided with a through hole 9 in an axial direction and is associated detachably with the enclosure 2 by means of temporary engagement means.
  • the temporary engagement means are constituted by a bracket 10, which is rigidly associated with the male element 8 and an elastic clamp 1 1 for retaining the bracket 10, generally known as clip, which is associated with the plate 3.
  • the male element 8 and the bracket 10 are mutually integrated.
  • the spherical joint 7 further comprises a female element 12 which is substantially shaped like a hemispherical dome and is rigidly associated with the support 5 and rests so as to slide over, with respect to the figures, the male element 8.
  • the photocell 1 comprises fastening means which are adapted to lock the angular position of the support 5 with respect to the enclosure 2.
  • the fastening means comprise in particular a threaded element, for example a screw 13, which passes through the hole 9 and whose free end is adapted to be engaged in the female element 12 by engagement in a nut 14 which is inserted in an appropriately provided seat, not shown in the figure, which is formed in said female element.
  • the fastening means further comprise a ring 15 for locking the male element 8 with respect to the female element 12; said ring is fitted on the shaft of the screw 13 and is adapted to be placed in contact below the male element 8.
  • the spherical joint 7 may have the male element associated with the support 5 and the female element associated with the plate 3.
  • the support 5 further comprises a receptacle 16 for a power supply assembly, for example of the battery type 17; as an alternative, the power supply assembly can be constituted by a mains cord, not shown in the figure.
  • the support 5 comprises a slit 18 for the insertion of a plate 19 which is associated with the mutually integrated optical assembly and electronic management unit. 6.
  • interlocking means are provided to retain the plate 19 within the slit 18 and consist of two slots 20 formed in the plate 19 and adapted to mate with two corresponding pins 21 provided on the support 5 proximate to the slit 18.
  • Two covering elements 22 are provided above and below the cover 4 with respect to the figures and are associated therewith and can be mated slidingly with the cover 4 by means of guides 23.
  • At least one of the two covering elements 22 can have means for coupling to the enclosure 2 of a second photocell 1 and in particular to a second cover 4, so as to constitute a succession of photocells 1 having different shapes and directions.
  • the supporting base is such as to support the composition of a photocell 1 with the corresponding selector or a plurality of photocells in series or a plurality of photocells and corresponding selectors, so as to ensure high modularity and structural variety.
  • the photocell 1 can have two optical assemblies, which are arranged so that the directions of the electron beams that are emitted/received from/by each optical assembly are mutually inclined, for example at 90°, at least one of the two optical assemblies acting as a receiver. Adjustment of the orientation of the optical assemblies allows to install optical barriers of different shapes.
  • the photocell 1 is installed as follows.
  • the mutually integrated electronic management unit and optical assembly 6 are locked to the support 5 by inserting the plate 19 in the slit 18 and by coupling the pins 21 with the slots 20.
  • the support 5 is oriented in the chosen direction by means of the spherical joint 7 and is kept in position by tightening the screw 13.
  • the bracket 10 is then fixed to the plate 3 by means of the clip 1 1.
  • the orientation of the support 5 and therefore of the optical assembly is adjusted by keeping loose the connection between the screw 13 and the nut 14.
  • the operator by tightening the screw 13, locks the rotation of the spherical joint 7 and therefore locks the orientation of the optical assembly with respect to the enclosure 2.
  • the described invention achieves the intended aim and objects and in particular the fact is stressed that the photocell with adjustable orientation particularly for optical barriers allows to provide easy and quick adjustment of the orientation of the optical assembly on the part of the operator by way of the use of a single screw.
  • the photocell with adjustable orientation allows the entry of the power supply of the electronic management unit from multiple directions, so as to reduce the space occupation of the power supply system, keep it as protected as possible and thus limit its tampering possibilities.
  • the photocell with adjustable orientation according to the invention by way of the use of two optical assemblies, allows to prepare, with the smallest possible number of photocells, optical barriers having different shapes and spatial arrangements which ensure high security and flexibility.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geophysics (AREA)
  • Casings For Electric Apparatus (AREA)

Abstract

L'invention concerne une cellule photoélectrique (1) à orientation ajustable, en particulier pour des barrières optiques. Cette cellule comprend : au moins une enceinte de type boîtier (2) qui contient au moins un ensemble optique associé à au moins une unité de gestion électronique, et au moins un support (5) à orientation ajustable pour le ou les ensembles optiques disposé entre l'enceinte (2) et l'ensemble optique, ledit support (5) étant monté amovible sur l'enceinte (2).
PCT/EP2007/059210 2006-09-15 2007-09-04 Cellule photoélectrique à orientation ajustable en particulier pour barrières optiques Ceased WO2008031739A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP07803189A EP2087381A1 (fr) 2006-09-15 2007-09-04 Cellule photoélectrique à orientation ajustable en particulier pour barrières optiques

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMO2006A000285 2006-09-15
ITMO20060285 ITMO20060285A1 (it) 2006-09-15 2006-09-15 Fotocellula ad orientazione regolabile particolarmente per barriere ottiche.

Publications (1)

Publication Number Publication Date
WO2008031739A1 true WO2008031739A1 (fr) 2008-03-20

Family

ID=38667023

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2007/059210 Ceased WO2008031739A1 (fr) 2006-09-15 2007-09-04 Cellule photoélectrique à orientation ajustable en particulier pour barrières optiques

Country Status (3)

Country Link
EP (1) EP2087381A1 (fr)
IT (1) ITMO20060285A1 (fr)
WO (1) WO2008031739A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2592608A1 (fr) * 2011-11-10 2013-05-15 Optex Co., Ltd. Unité de réglage d'angle automatique destiné à être utilisé dans un dispositif de détection d'objet

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0821329A1 (fr) 1996-07-23 1998-01-28 Optex Co. Ltd. Capteur de sécurité avec dispositif de visée incorporé
EP1045353A2 (fr) * 1999-04-16 2000-10-18 Cardin Elettronica S.p.A. Cellule photoélectrique
US20030058094A1 (en) * 2001-09-26 2003-03-27 Masashi Iwasawa Anti-thief security sensor assembly
US20030058104A1 (en) * 2001-09-26 2003-03-27 Masashi Iwasawa Anti-thief security sensor assembly
GB2410549A (en) * 2004-02-02 2005-08-03 Optex Co Ltd Security sensor device having optical axis adjustment capability

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070090237A1 (en) * 2005-10-07 2007-04-26 Hsu Chen J Camera tripod

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0821329A1 (fr) 1996-07-23 1998-01-28 Optex Co. Ltd. Capteur de sécurité avec dispositif de visée incorporé
EP1045353A2 (fr) * 1999-04-16 2000-10-18 Cardin Elettronica S.p.A. Cellule photoélectrique
US20030058094A1 (en) * 2001-09-26 2003-03-27 Masashi Iwasawa Anti-thief security sensor assembly
US20030058104A1 (en) * 2001-09-26 2003-03-27 Masashi Iwasawa Anti-thief security sensor assembly
GB2410549A (en) * 2004-02-02 2005-08-03 Optex Co Ltd Security sensor device having optical axis adjustment capability

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP2087381A1 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2592608A1 (fr) * 2011-11-10 2013-05-15 Optex Co., Ltd. Unité de réglage d'angle automatique destiné à être utilisé dans un dispositif de détection d'objet
US8767197B2 (en) 2011-11-10 2014-07-01 Optex Co., Ltd. Automatic angle adjustment unit for use in object detection device

Also Published As

Publication number Publication date
EP2087381A1 (fr) 2009-08-12
ITMO20060285A1 (it) 2008-03-16

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