WO2022162706A1 - Actionneur, en particulier pour commander un dispositif de déplacement d'au moins une caméra vidéo - Google Patents

Actionneur, en particulier pour commander un dispositif de déplacement d'au moins une caméra vidéo Download PDF

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Publication number
WO2022162706A1
WO2022162706A1 PCT/IT2021/050432 IT2021050432W WO2022162706A1 WO 2022162706 A1 WO2022162706 A1 WO 2022162706A1 IT 2021050432 W IT2021050432 W IT 2021050432W WO 2022162706 A1 WO2022162706 A1 WO 2022162706A1
Authority
WO
WIPO (PCT)
Prior art keywords
video camera
actuator
shaft
main body
moving
Prior art date
Application number
PCT/IT2021/050432
Other languages
English (en)
Inventor
Thomas Axel DEPONTE
Original Assignee
Innova S.P.A.
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 Innova S.P.A. filed Critical Innova S.P.A.
Publication of WO2022162706A1 publication Critical patent/WO2022162706A1/fr

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B17/00—Details of cameras or camera bodies; Accessories therefor
    • G03B17/56—Accessories
    • G03B17/561—Support related camera accessories
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
    • F16M11/02—Heads
    • F16M11/04—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
    • F16M11/06—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting
    • F16M11/10—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting around a horizontal axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
    • F16M11/02—Heads
    • F16M11/18—Heads with mechanism for moving the apparatus relatively to the stand
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
    • F16M11/20—Undercarriages with or without wheels
    • F16M11/24—Undercarriages with or without wheels changeable in height or length of legs, also for transport only, e.g. by means of tubes screwed into each other
    • F16M11/38—Undercarriages with or without wheels changeable in height or length of legs, also for transport only, e.g. by means of tubes screwed into each other by folding, e.g. pivoting or scissors tong mechanisms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M13/00—Other supports for positioning apparatus or articles; Means for steadying hand-held apparatus or articles
    • F16M13/02—Other supports for positioning apparatus or articles; Means for steadying hand-held apparatus or articles for supporting on, or attaching to, an object, e.g. tree, gate, window-frame, cycle
    • F16M13/027—Ceiling supports
    • 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
    • G08B13/194—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 image scanning and comparing systems
    • G08B13/196—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 image scanning and comparing systems using television cameras
    • G08B13/19617—Surveillance camera constructional details
    • G08B13/1963—Arrangements allowing camera rotation to change view, e.g. pivoting camera, pan-tilt and zoom [PTZ]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60—Control of cameras or camera modules
    • H04N23/695—Control of camera direction for changing a field of view, e.g. pan, tilt or based on tracking of objects

Definitions

  • the present invention concerns an actuator, in particular but not limited to the driving of a device for moving at least one video camera, for example a video camera able to be concealed in order to allow undercover filming.
  • the present invention also concerns a device for moving a video camera comprising the actuator and an optical inspection assembly comprising the movement device.
  • video cameras can be used, concealed inside common objects, such as electrical junction boxes, domestic appliances, lamps, cabinets, streetlamps or other.
  • a through hole is normally made on a wall of a concealing object and must be as invisible as possible.
  • its sizes vary from about 1 mm to about 10 mm, also according to the distance from the hole of the subject or scene or zone to be filmed.
  • This adjustment is substantially the result of the combination of two rotation movements, that is, two orientation movements of the video camera to the right or to the left, called “panning”, and one upward or downward, called “tilting”.
  • the swinging movement can be either manual, that is, adjusted only once during installation, or automatic, that is, continuously adjusted by means of remotely controlled movement devices.
  • the movement devices are associated with drive actuators which are often complex, bulky and excessively noisy. Furthermore, known movement devices are often subject to high vibrations and high electrical energy consumption.
  • one purpose of the present invention is to provide an actuator for driving a device for moving a video camera which is small and compact, for example in the order of 10-20 mm and which has a high torque in relation to its small size.
  • Another purpose of the present invention is to provide an actuator for driving a device for moving a video camera which has reduced electrical energy consumption and is subject to limited vibration phenomena.
  • the Applicant has devised, tested and embodied the present invention to overcome the shortcomings of the state of the art and to obtain these and other purposes and advantages.
  • the present invention concerns an actuator, in particular but not limited to the driving of driving a device for moving at least one video camera, the video camera being configured to be rotated according to at least one pair of swing axes.
  • the actuator comprises at least one shaft rotating in one sense or the other around an axis and associated with at least one shape memory metal wire electrically excitable so as to lengthen or contract, determining a rotation of the shaft, which is associated with each of the axes so as to determine the drive of the device.
  • the actuator also comprises a main body in which there is housed a clutch associated with the shape memory metal wire.
  • the adoption of the at least one electrically excitable metal wire associable with a rotating shaft it is possible to advantageously produce an actuator for driving a video camera which has small sizes, fbr example of the order of 10-20 mm, and which has a high torque in relation to these small sizes.
  • the present actuator is also characterized by reduced electrical energy consumption and is subject to limited vibration phenomena.
  • the metal wire can comprise at least one pair of branches which, electronically excited, allow the rotation of the shaft to which they are connected in opposite senses with respect to each other.
  • the metal wire can be electrically excited by means of an electric circuit associated with the branches and automatically drivable so that the branches are alternately powered.
  • the clutch can comprise a slider configured to translate in one sense or the other of a given direction along a seating made in the main body and associated with a pre-load spring.
  • the shaft of the actuator can be positioned between a seating made in the main body and a first end of the slider.
  • the shaft can be associated during use with a hinge of the movement device or itself constitute such hinge.
  • the actuator can be associated with a control unit configured to regulate its drive remotely.
  • the present invention also concerns a device for moving at least one video camera, the video camera being configured to be rotated according to at least one pair of swing axes and being provided with a main body equipped with an optical unit which is configured to be positioned in proximity to a through hole.
  • the movement device comprises an actuator as defined above and associated with the axes.
  • the present invention also concerns an optical inspection assembly comprising a video camera, the video camera being configured to be rotated according to at least one pair of swing axes and being provided with a main body equipped with an optical unit which is configured to be positioned in proximity to a through hole made in a surface, and a device for moving the at least one video camera as defined above.
  • - fig. 1 is a lateral view of an actuator for driving a device for moving a video camera according to the present invention
  • - fig. 2 is a section view of the actuator considered according to the line II-II of fig. 1;
  • - fig. 3 is a schematic three-dimensional view of a device for moving a video camera in which the present actuator can be used;
  • - fig. 4 is a three-dimensional and exploded view of the present actuator
  • - fig. 6 is a top view of the actuator
  • - ficr 7 is a s -ection view nf t -he n -resent a -ctuator t -aken a -lona t -he l -ine VTT-VTT of video camera to which the present actuator can be applied;
  • - fig. 9a is a schematic lateral view of a part of the device of fig. 8 in a first operating position
  • - fig. 9b is a schematic lateral view of a part of the device of fig. 8 in a second operating position.
  • FIG. 1 The attached drawings, see in particular fig. 1, fig. 2 and fig. 3, show an actuator 28, in particular but not limited to the driving of a device 44 for moving at least one video camera 11, the video camera 11 being configured to be rotated according to at least one pair of swing axes XI and Y1 by means of the device 44.
  • the actuator 28 comprises at least one shaft 29 rotating in one sense or the other around an axis B and associated with at least one shape memory metal wire 30 electrically excitable so as to lengthen or contract determining a rotation of the shaft 29.
  • the shaft 29 is associated with each of the swing axes XI and Y1 so as to determine the drive of the device 44 for moving the video camera 11.
  • the device 44 can comprise a base 49 provided with a seating 50, for example cylindrical in shape, in which a support 51 is housed.
  • the support 51 is configured to rotate with respect to the seating 50 around the axis Y 1 and comprises a lower part 52, for example cylindrical in shape, inserted to size in the seating 50, and an upper part 53, substantially U-shaped, to which the at least one video camera 11 is connected.
  • the video camera 11 comprises a main body 12 provided with an optical unit 13 and configured to be rotatably attached to the upper part 53 of the support 51.
  • the main body 12 of the video camera 11 can rotate with respect to the support 51 around the axis XI.
  • the metal wire 30 when heated by electric current, contracts, that is, it reduces its length. When the electrical excitation that causes this heating ceases, the metal wire 30 cools down and then lengthens thanks to the shape memory metal alloy that it is made of. In substance, the metal wire 30 returns to its idle position.
  • the metal wire 30 can comprise at least one pair of branches 31 and 32 connected to the shaft 29 and electrically excitable so as to allow the rotation of the shaft 29 in one sense, or in the opposite sense, around the axis B.
  • the metal wire 30 can be electrically excited by means of an electric circuit 33 associated with the two branches 31 and 32 and with a common branch connected to the shaft 29, identifiable in fig. la.
  • the electric circuit 33 can be driven automatically so that the branch 31 or the branch 32 is alternately powered, so as to rotate the shaft 29 and therefore the hinge 18 or 19 in the desired sense.
  • the electric circuit 33 in fig. 1 is shown for illustrative purposes only and some parts have been omitted for simplicity, for example the common branch.
  • fig. la shows an equivalent electric circuit 33’.
  • this equivalent electric circuit 33’ by means of the branch 31 a clockwise rotation (CW) of the shaft 29 is achieved and by means of the branch 32 a counter-clockwise rotation (CCW) is achieved.
  • CW clockwise rotation
  • CCW counter-clockwise rotation
  • the metal wire 30 can be wound around the shaft 29 and clamped in position by means of a screw 34 or suchlike.
  • the actuator 28 see also from fig. 4 to fig. 7, comprises a main body 35 in which there is housed a clutch 36 associated with the shape memory metal wire 30.
  • the clutch 36 can comprise a slider 40 configured to translate in one sense or the other of a given direction C along a seating 37 made in the main body 35, the slider 40 being associated with a pre-load spring 43.
  • the shaft 29 can be positioned between a seating 47 made in the main body 35 and a first end 41 of the slider 40.
  • the seating 47 and the first end 41 can be of a rounded shape, opposite each other, and the shaft 29 is positioned between them.
  • the first end 41 can comprise for example two rounded and parallel arms.
  • the slider 40 can also comprise a second end 42 provided with pins 39 for supporting the slider 40.
  • the travel of the translation of the slider 40 can be determined by the extension of a pair of slits 38 made on the main body 35 and in which the ends of the pins 39 for supporting the slider 40 are inserted.
  • the slider 40 can therefore move between two positions, that is, at least a first position shown in fig. 9 in which the clutch 36 is in contact with the shaft 29 and exerts a braking action on it, and a second position in which it is at the maximum distance from the shaft 29.
  • the pins 39 are located substantially in an intermediate position of the slits 38.
  • the slider 40 can translate by a few hundredths of a millimeter around the position of equilibrium.
  • the slits 38 therefore have the purpose of allowing a rectilinear motion of the slider 40 and of limiting its sliding, so that during assembly, even in the temporary absence of the shaft 29, the slider 40 remains constrained to the main body 35 and contains the spring 43.
  • the actuator 28 is also equipped with a series of pins 45, for example four pins 45, for supporting an equal number of corresponding pulleys 46, around which the metal wire 30 is suitably wound.
  • the metal wire 30, therefore, in addition to acting in order to make the shaft 29 rotate, can also act on the slider 40 and when the metal wire 30 exceeds a certain degree of deformation due to the action of the heat generated by the electric excitation, as well as determining a rotary motion of the shaft 29, it also determines a force on the slider 40.
  • the metal wire 30, pulling the slider 40 contrasts the force exerted by the spring 43.
  • the shaft 29 can be provided with ends associated with attachment elements 48 such as nuts or suchlike which keep it in position in the seating 47.
  • the present actuator 28 can be associated with a control unit 21 configured to regulate its drive remotely.
  • the actuator 28 could also be used in other types of devices for moving the video camera 11, for example the device 10 shown in figs. 8, 9a and 9b.
  • the main body 12 of the video camera 11 is configured to be positioned in proximity to a through hole 14 made in a surface 15, for example a surface of an object for concealing the video camera 11.
  • the video camera 11 is configured to define a field of view V which develops from the optical unit 13 and passes through the through hole 14.
  • the field of view V can be, in particular, defined by the optical unit 13.
  • the device 10 comprises at least a first articulated mechanism 16, provided with a series of sides 22 connected by means of hinges 18, the articulated mechanism 16 being directly or indirectly associated during use with the surface 15 by means of one or more hinges 18a, and at least a second articulated mechanism 17, provided with a series of sides 23 connected by means of hinges 19, the second articulated mechanism 17 being associated on one part with the first articulated mechanism 16 by means of one or more hinges 19a and on the other part with the main body 12 of the video camera 11 by means of one or more hinges 19b.
  • the field of view V of the video camera 11 is always contained within the through hole 14, that is, it does not interfere with the edge of the through hole 14 and the optical axis A is always substantially at the center of the through hole 14.
  • the first articulated mechanism 16 is directly or indirectly associated with the surface 15 by means of a pair of hinges 18a.
  • the first articulated mechanism 16 can be directly connected to the surface 15 by mechanism 16 can be connected to an intermediate support 20 attached to the surface 15.
  • the pair of hinges 18a in this case is associated with the support 20.
  • the second articulated mechanism 17 can be associated with a final side 22a of the first articulated mechanism 16 by means of a pair of hinges 19a.
  • the second articulated mechanism 17 can be connected to the main body 12 of the video camera 11 by means of a pair of hinges 19b.
  • the hinges 18, 18a and 19, 19a, 19b of each of the first and second articulated mechanisms 16 and 17 can be directed substantially in a same direction of rotation X and Y.
  • the hinges 18, 18a of the first articulated mechanism 16 will be directed in a direction X
  • the hinges 19, 19a, 19b of the second articulated mechanism 17 will be directed in a direction Y.
  • These directions X and Y can represent the directions in which the video camera 11 is swung by means of the device 10.
  • the first and second articulated mechanisms 16 and 17 can each comprise at least a first articulated quadrilateral mechanism 24 and 25 associated with at least a second articulated quadrilateral mechanism 26 and 27, see in particular the second articulated mechanism 17 schematically shown in figs. 9a and 9b and provided with the first articulated quadrilateral mechanism 25 and the second articulated quadrilateral mechanism 27.
  • articulated quadrilateral mechanisms of each of the articulated mechanisms can have one side in common, see for example the side 23a of the articulated quadrilateral mechanisms 25 and 27 of figs. 9a and 9b.
  • At least one hinge 18 and 19 can be associated with the actuator 28 for moving the corresponding articulated mechanism 16 or 17, see for example the hinge 19a of the second articulated mechanism 17 of fig. 9a and 9b.
  • the shaft 29 of the actuator 28 can be, for example, cylindrical in shape, associated with one of the hinges 18 and 19, or it can itself constitute the rotation hinge.
  • the articulated mechanisms 16 and 17 can be connected to the control unit 21 which, for example, regulates their movements remotely, in order to position the video camera 11 in the desired position with respect to the through hole 14.
  • the control unit 21 can also be associated with a display or suchlike through which an operator can view what is being framed by the video camera 11.
  • the control unit 21 can also be associated with the electric circuit 33 for excitation of the branches 31 or 32 of the metal wire 30.
  • the displacements of the video camera 11 are carried out thanks to the drive of the devices 10 and 44.
  • the actuator 28 can be used in other movement devices, for example in a movement device as described in Italian patent application no. 102020000009253 belonging to the Applicant of the present application, possibly with the use of a rotary to linear motion conversion system.
  • the devices 10 and 44 equipped with the present actuator 28 and the video camera 11 substantially form, or are comprised in, an optical inspection assembly, which is also the subject of the present invention.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Studio Devices (AREA)
  • Camera Bodies And Camera Details Or Accessories (AREA)
  • Accessories Of Cameras (AREA)

Abstract

Actionneur (28), en particulier pour commander un dispositif (10, 44) de déplacement d'une caméra vidéo (11), la caméra vidéo (11) étant configurée pour être mise en rotation selon au moins une paire d'axes de pivotement (X, Y, X1, Y1) au moyen du dispositif (10, 44).
PCT/IT2021/050432 2021-01-28 2021-12-28 Actionneur, en particulier pour commander un dispositif de déplacement d'au moins une caméra vidéo WO2022162706A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT102021000001775 2021-01-28
IT102021000001775A IT202100001775A1 (it) 2021-01-28 2021-01-28 Attuatore di azionamento di un dispositivo di movimentazione di almeno una telecamera

Publications (1)

Publication Number Publication Date
WO2022162706A1 true WO2022162706A1 (fr) 2022-08-04

Family

ID=75660136

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IT2021/050432 WO2022162706A1 (fr) 2021-01-28 2021-12-28 Actionneur, en particulier pour commander un dispositif de déplacement d'au moins une caméra vidéo

Country Status (2)

Country Link
IT (1) IT202100001775A1 (fr)
WO (1) WO2022162706A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090052037A1 (en) * 2007-08-24 2009-02-26 Mats Goran Henry Wernersson Optical device stabilizer
US20100065705A1 (en) * 2007-03-13 2010-03-18 Brown Garrett W Biased hinge for equipoising support equipment
WO2018221798A1 (fr) * 2017-06-01 2018-12-06 엘지이노텍 주식회사 Dispositif de commande de caméra, dispositif de prise de vues et appareil de vol
CN111561633A (zh) * 2020-04-15 2020-08-21 睿恩光电有限责任公司 可倾斜摄像系统及电子设备

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100065705A1 (en) * 2007-03-13 2010-03-18 Brown Garrett W Biased hinge for equipoising support equipment
US20090052037A1 (en) * 2007-08-24 2009-02-26 Mats Goran Henry Wernersson Optical device stabilizer
WO2018221798A1 (fr) * 2017-06-01 2018-12-06 엘지이노텍 주식회사 Dispositif de commande de caméra, dispositif de prise de vues et appareil de vol
CN111561633A (zh) * 2020-04-15 2020-08-21 睿恩光电有限责任公司 可倾斜摄像系统及电子设备

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