FR2747003A1 - Tracking system enabling spotlight to follow actor on stage - Google Patents

Tracking system enabling spotlight to follow actor on stage Download PDF

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Publication number
FR2747003A1
FR2747003A1 FR9604080A FR9604080A FR2747003A1 FR 2747003 A1 FR2747003 A1 FR 2747003A1 FR 9604080 A FR9604080 A FR 9604080A FR 9604080 A FR9604080 A FR 9604080A FR 2747003 A1 FR2747003 A1 FR 2747003A1
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FR
France
Prior art keywords
receivers
orientation
fixed
moving subject
actor
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Withdrawn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
FR9604080A
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French (fr)
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Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to FR9604080A priority Critical patent/FR2747003A1/en
Publication of FR2747003A1 publication Critical patent/FR2747003A1/en
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R5/00—Stereophonic arrangements
    • H04R5/02—Spatial or constructional arrangements of loudspeakers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
    • G01S3/80—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using ultrasonic, sonic or infrasonic waves
    • G01S3/802—Systems for determining direction or deviation from predetermined direction
    • G01S3/808—Systems for determining direction or deviation from predetermined direction using transducers spaced apart and measuring phase or time difference between signals therefrom, i.e. path-difference systems
    • G01S3/8083—Systems for determining direction or deviation from predetermined direction using transducers spaced apart and measuring phase or time difference between signals therefrom, i.e. path-difference systems determining direction of source
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
    • G01S3/80—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using ultrasonic, sonic or infrasonic waves
    • G01S3/802—Systems for determining direction or deviation from predetermined direction
    • G01S3/805—Systems for determining direction or deviation from predetermined direction using adjustment of real or effective orientation of directivity characteristics of a transducer or transducer system to give a desired condition of signal derived from that transducer or transducer system, e.g. to give a maximum or minimum signal
    • G01S3/807—Systems for determining direction or deviation from predetermined direction using adjustment of real or effective orientation of directivity characteristics of a transducer or transducer system to give a desired condition of signal derived from that transducer or transducer system, e.g. to give a maximum or minimum signal the desired condition being maintained automatically

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)

Abstract

The orientation system is intended to maintain a directional unit aligned with a moving subject. It includes an ultrasound transmitter (1) which is fixed to the moving subject and ultrasound receivers (4,5,14) which are fixed to the directional unit. The ultrasound receivers are connected to a signal processing unit (9) in order to determine the control signals necessary for application to motor(s) (11) adjusting the orientation of the directional unit. Each motor may operate about a different axis. The processing unit may include phase comparators able to detect changes in signals received by the different ultrasound receivers which indicate the movement of the moving subject w.r.t. the directional unit.

Description

La présente invention concerne un dispositif electrotechnique qui permet d'orienter un appareil quelconque fixe. dans la direction d'un sujet mobile
Ce dispositif peut s'appliquer a différents domaines tels que le théatre (orientation d'un spot d'édairage vers un acteur). l'enseignement (orientation d'une caméra vers un professeur pour filmer son cours), la hl-fi (onentat,on des hauts parleurs vers l'auditeur).The present invention relates to an electrotechnical device which makes it possible to orient any fixed apparatus. in the direction of a moving subject
This device can be applied to different fields such as theater (orientation of a lighting spot towards an actor). teaching (orientation of a camera towards a professor to film his lesson), hl-fi (onentat, one of the loudspeakers towards the listener).

Dans les deux premiers exemples d'appiication. l'orientation des appareils est habituellement confiée à une personne spécialisée, ce qui occasionne des courts supplémentaires de fonctionnement. Dans le troisième exemple, cette foncaon n'est pas remplie. Ainsi l'auditeur doit rester immobile par rapport aux enceintes s'il veut percevoir un son stéréo optimum.In the first two examples of application. the orientation of the devices is usually entrusted to a specialized person, which gives rise to additional short periods of operation. In the third example, this function is not completed. Thus the listener must remain motionless in relation to the speakers if he wants to perceive optimum stereo sound.

Le dispositif selon l'invention permet de remédier à ces inconvénients: II oriente en permanence l'appareil vers le sujet. quelle que soit la position de ce dernier.The device according to the invention overcomes these drawbacks: It permanently directs the device towards the subject. whatever the position of the latter.

II est constitué: d'un boitier émetteur de signaux sonores fixé au sujet mobile, de deux ou de trois récepteurs fixés à rappareil à orienter, de moyens de treiternent de ces signaux sonores, de moyens d'orientation de l'appareil. It consists of: a box emitting sound signals attached to the moving subject, two or three receivers attached to the device to be oriented, means for handling these sound signals, means for orienting the device.

Pour une orientation dans un plan, deux récepteurs sont placés latéralement de part et d'autre de l'appareil.For orientation in a plane, two receivers are placed laterally on either side of the device.

Pour une orientation dans l'espace, un troisième récepteur est micacé en hauteur par rapport à l'appareil.For orientation in space, a third receiver is micaceous in height relative to the device.

De manière préférentielle, I'émission se produit dans le domaine ultrasonique et les moyens de traitement sont des comparateurs de phase.Preferably, the emission occurs in the ultrasonic field and the processing means are phase comparators.

La rotation de l'appareil s'effectue à l'aide de moteurs électriques.The device is rotated using electric motors.

L'invention et ses avantages seront mieux compris à l'aide de la description qui suit et du dessin sur lequel:
- la figl représente la configuration émetteur récepteurs dans le cas de l'orientaton dans un plan des hauts parleurs d'une chaine hi-fi.The invention and its advantages will be better understood with the aid of the description which follows and of the drawing in which:
- figl represents the transmitter and receiver configuration in the case of orientaton in a plane of the speakers of a hi-fi system.

- La fig 2 représente les moyens de traitement des signaux sonores et d'orientation de l'appareil. - Fig 2 shows the means for processing sound signals and orientation of the device.

- la fig 3 est une représentation vue de face d'un appareil et de ses détecteurs. - Fig 3 is a front view representation of an apparatus and its detectors.

- la fig 4 est une variante de la fig 2 dans le cas d'une orientation dans l'espace. - Fig 4 is a variant of Fig 2 in the case of orientation in space.

Le boîtier émetteur d'ultrasons (1) (autonome) (fige) est fixé au sujet mobile (2).The ultrasonic transmitter unit (1) (autonomous) (freeze) is fixed to the moving subject (2).

Pour une orientation dans un plan, les ultrasons (3) sont reçus par les deux récepteurs (4) et (5) fixés de chaque coté de l'appareil a onenter (6). ces récepteurs devant étre écarté l'un de l'autre d'au moins 20 cm
Un déplacement du sujet (2) par rapport au plan de symétrie (18) des deux récepteurs (4) et (5). provoque une différence de distance entre l'émetteur (I) et chacun des deux
récepteurs. Cela se traduit par un déphasage entre l'onde (7) reçue par le récepteur (4)
et l'onde (8) reçue par le récepteur (5).For orientation in a plane, the ultrasound (3) is received by the two receivers (4) and (5) fixed on each side of the oncentering device (6). these receivers must be separated from each other by at least 20 cm
A displacement of the subject (2) relative to the plane of symmetry (18) of the two receivers (4) and (5). causes a difference in distance between the transmitter (I) and each of the two
receivers. This results in a phase shift between the wave (7) received by the receiver (4)
and the wave (8) received by the receiver (5).

Le comparateur de phase (9) (fig2), va traduire cette différence de phase en tension (10) pour actionner le moteur électrique (11) dans un sens tel que le déphasage s'annule, ramenant l'appareil (6) tace au sujet (2). The phase comparator (9) (fig2), will translate this phase difference into voltage (10) to activate the electric motor (11) in a direction such that the phase shift is canceled, bringing the device (6) back to subject (2).

En effet le moteur entraine, autour de l'axe (12), le plateau (13) sur lequel est fixe rappareil (6) ainsi que les deux récepteurs (4) et (5) (fig3).In fact, the motor drives, around the axis (12), the plate (13) on which the device (6) is fixed as well as the two receivers (4) and (5) (fig3).

Pour une orientation en trois dindons (fig 4), on rajoute un troisième récepteur (14) au dessus ou au-dessous de l'appareil et un second comparateur de phase.(15) qui actionne un second moteur électrique (16) orientant l'appareil suivant l'axe (17) fig(3). For an orientation in three turkeys (fig 4), add a third receiver (14) above or below the device and a second phase comparator. (15) which activates a second electric motor (16) orienting the device along the axis (17) fig (3).

Claims (6)

REVENDICATIONS 1)- Dispositif qui permet d'onenter un appareil quelconque fixe,dans la direction un sujet mobile et caractérisé en ce qu'il comporte:1) - Device which allows any fixed device to be pointed in the direction of a moving subject and characterized in that it comprises: Des moyens de transmission de signaux sonores entre un émetteur (1 > fixé au sujet et des récepteurs sonores (4), (5), (14), disposés solidairement autour de rappareil àorienter.  Means for transmitting sound signals between a transmitter (1> fixed to the subject and sound receivers (4), (5), (14), arranged integrally around the device to be oriented. Des moyens d'orientation (11) et (16) de l'appareil â partir de ces signaux traités. Orientation means (11) and (16) of the device from these processed signals. Des moyens de traitement de ces signaux (9) et (15) Means for processing these signals (9) and (15) 2)- Dispositif selon la revendication 1 caractérisé en ce que les moyens de transmission de signaux comprennent un émetteur et des récepteurs travaillant dans la gamme de fréquence ultrasonique.2) - Device according to claim 1 characterized in that the signal transmission means comprise a transmitter and receivers working in the ultrasonic frequency range. 3)- Dispositif selon les revendications 1 ou 2 caractérisé en ce que les moyens de traitement des signaux sont des comparateurs de phase (9) et (15).3) - Device according to claims 1 or 2 characterized in that the signal processing means are phase comparators (9) and (15). 4)- Dispoff selon l'une des revendications 1 à 3 caractérisé en ce que les moyens d'orientation sont des moteurs électriques (11) et (16).4) - Dispoff according to one of claims 1 to 3 characterized in that the orientation means are electric motors (11) and (16). 5)- DisposFf selon l'une des revendications 1 à 4 caractérisé en ce que, dans le cas d'une orientation dans un plan, les récepteurs (4) et (5) sont positionnés latéralement et de part et d'autre de l'appareil (6) à orienter.5) - DisposFf according to one of claims 1 to 4 characterized in that, in the case of orientation in a plane, the receivers (4) and (5) are positioned laterally and on either side of the device (6) to orient. 6)-Dispositif selon l'une des revendications 1 à 4 caractérisé en ce que, dans le cas d'une onenteron en trois dimensions les récepteurs (4), (5), et (14) sont positionnés latéralement et vericalement par rapport à appareil (1) à orienter. 6) -A device according to one of claims 1 to 4 characterized in that, in the case of a three-dimensional onenteron the receivers (4), (5), and (14) are positioned laterally and vertically relative to device (1) to orient.
FR9604080A 1996-03-27 1996-03-27 Tracking system enabling spotlight to follow actor on stage Withdrawn FR2747003A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR9604080A FR2747003A1 (en) 1996-03-27 1996-03-27 Tracking system enabling spotlight to follow actor on stage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9604080A FR2747003A1 (en) 1996-03-27 1996-03-27 Tracking system enabling spotlight to follow actor on stage

Publications (1)

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FR2747003A1 true FR2747003A1 (en) 1997-10-03

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FR9604080A Withdrawn FR2747003A1 (en) 1996-03-27 1996-03-27 Tracking system enabling spotlight to follow actor on stage

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FR (1) FR2747003A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998014798A1 (en) * 1996-10-02 1998-04-09 Bauer Will N System for 3d tracking of a remote point
GB2358117A (en) * 1999-11-04 2001-07-11 Sennheiser Electronic Controlling sound and/or lighting systems for public functions
GB2440995A (en) * 2006-03-28 2008-02-20 Michael David Brown Detecting the direction and motion of a source of radiation
EP1914563A1 (en) 2006-10-19 2008-04-23 Polycom, Inc. Ultrasonic camera tracking system and associated methods
EP3159710A1 (en) * 2015-10-23 2017-04-26 clownfish information technology GmbH Method for determining a position of a mobile unit

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998014798A1 (en) * 1996-10-02 1998-04-09 Bauer Will N System for 3d tracking of a remote point
GB2358117A (en) * 1999-11-04 2001-07-11 Sennheiser Electronic Controlling sound and/or lighting systems for public functions
GB2440995A (en) * 2006-03-28 2008-02-20 Michael David Brown Detecting the direction and motion of a source of radiation
EP1914563A1 (en) 2006-10-19 2008-04-23 Polycom, Inc. Ultrasonic camera tracking system and associated methods
AU2007221976B2 (en) * 2006-10-19 2009-12-24 Polycom, Inc. Ultrasonic camera tracking system and associated methods
CN101277422B (en) * 2006-10-19 2012-06-27 宝利通公司 Ultrasonic camera tracking system and associated methods
US8249298B2 (en) 2006-10-19 2012-08-21 Polycom, Inc. Ultrasonic camera tracking system and associated methods
EP3159710A1 (en) * 2015-10-23 2017-04-26 clownfish information technology GmbH Method for determining a position of a mobile unit

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