WO2009004539A1 - Système de commande d'éclairage à détection de position automatique d'objets et procédé permettant de commander un système d'éclairage par détection automatique de la position d'objets - Google Patents

Système de commande d'éclairage à détection de position automatique d'objets et procédé permettant de commander un système d'éclairage par détection automatique de la position d'objets Download PDF

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Publication number
WO2009004539A1
WO2009004539A1 PCT/IB2008/052567 IB2008052567W WO2009004539A1 WO 2009004539 A1 WO2009004539 A1 WO 2009004539A1 IB 2008052567 W IB2008052567 W IB 2008052567W WO 2009004539 A1 WO2009004539 A1 WO 2009004539A1
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WO
WIPO (PCT)
Prior art keywords
light control
lighting
control system
objects
automatically
Prior art date
Application number
PCT/IB2008/052567
Other languages
English (en)
Inventor
Matthias Wendt
Armand M. M. Lelkens
Original Assignee
Philips Intellectual Property & Standards Gmbh
Koninklijke Philips Electronics N.V.
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 Philips Intellectual Property & Standards Gmbh, Koninklijke Philips Electronics N.V. filed Critical Philips Intellectual Property & Standards Gmbh
Publication of WO2009004539A1 publication Critical patent/WO2009004539A1/fr

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/10—Controlling the light source
    • H05B47/105—Controlling the light source in response to determined parameters
    • H05B47/115—Controlling the light source in response to determined parameters by determining the presence or movement of objects or living beings
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection

Definitions

  • the invention relates to a system and method for controlling a lighting system by automatically detecting the position of objects.
  • Lighting systems are becoming more advanced, flexible and integrated, and will enable new forms of lighting including color lighting and dynamics, which will make it possible to create a whole variety of numerous light designs with a single lighting system.
  • the operator of a light installation has to know all available properties that can be adjusted for a certain object to set-up a light design. If a user likes to interactively modify the light settings she/he could do that by traditionally adjusting lamp settings manually. However, that requires in-depth knowledge of the related lamps and the possible adjustments, and may be tedious.
  • WO 2005/107337 Al discloses a user interface for controlling a lighting device.
  • the user interface is based on a system comprising a detection device and transponders. Bringing the transponders within the detection device so that they will be detected causes the transponders to send a response signal, which signal controls the lighting color and/or intensity of a lighting unit of the lighting device.
  • Each transponder is programmed to control a particular color or a specific light intensity.
  • the transponders may be RFID (Radio Frequency Identification) tags. This user interface enables a user to easily change lighting color and/or intensity.
  • a basic idea of the invention is to automatically detect the positions of objects in a lighting environment, particularly of movable objects like mannequins in a shop, and to control a lighting system depending on the detected positions, particularly by automatically adjusting created light control values for rendering light effects associated with the objects depending on the detected positions of objects. For example, when a certain object is moved in a shop from one to another position, the new position of the object may be automatically detected and signaled to the light control system which may then automatically adjust the lighting effects associated with the moved object and its new position.
  • some important terms used herein are explained.
  • lighting atmosphere means a combination of different lighting parameters such as intensities of different spectral components of lighting, the colors or spectral components contained in a lighting, the color gradient or the like.
  • abtract atmosphere description of a lighting atmosphere means a description of the atmosphere at a higher level of abstraction than a description of settings of the intensity, color or like of every individual lighting device or unit of a lighting system.
  • the term "semantic area” means a description of an area such a "cash register” in a shop in contrast to a concrete description of an area or a location with coordinates.
  • a lighting atmosphere does not comprise concrete information about a specific instance of a lighting system such as the number and locations of the used lighting units or devices and their colors and available intensities.
  • the term "lighting system” comprises a complex system for illumination, particularly containing several lighting units, for example a plurality of LEDs (light emitting diodes) or other lighting devices such as halogen bulbs.
  • a lighting system applies several tens to hundreds of these lighting devices so that the composition of a certain lighting atmosphere by individually controlling the characteristics of each single lighting device would require computerized lighting control equipment.
  • a light control system with automatic position detection of objects is provided, wherein the light control system is adapted
  • Such a system offers an automatic control of the light effects for objects created by a lighting system. Particularly, it does not require the tedious and manual adjustment of the light control values when the target lighting environment has changed due to the movement of an object. This is particularly useful in complex lighting systems with dozens of light units, where a change in the lighting environment normally would require a kind of redesign of a lighting atmosphere, particularly an adaptation of light effects for objects. In this embodiment, lighting effects may automatically "move" with an object.
  • the light control system may be further adapted to automatically create the light control values from an abstract description of the lighting atmosphere.
  • the light control system may process the detected positions during the process of automatically creating the certain lighting atmosphere from the abstract description of this atmosphere by means of an abstract atmosphere description language in that it adjusts the created lighting effects to the detected positions.
  • the abstract lighting atmosphere description is automatically transferred into control values for the lighting units of a concrete lighting system.
  • the abstract description may contain positions of semantic areas which are used to describe certain lighting effects.
  • the light control system may be adapted - to automatically receive tag identifications from an object
  • the light control system may comprise a database with the absolute positions of each of the tags.
  • the light control system may detect the object's position by retrieving the absolute positions of the tags corresponding to the received tag identifications.
  • a random code may be generated for each tag which allows using the technology simultaneously with other communication systems as long as the code is distinguishable from other codes.
  • the tags may be implemented by for example cheap plastic RFID tags incorporated in carpets, floor materials, tables, etc. so that with a tag every few square centimeters, a device that is placed on top of it can deduce its position by reading the tag underneath.
  • the light control system may be adapted
  • the light control system may determine this by means of the lighting rules database and may furthermore automatically activate an accent light.
  • the lighting rules database may also contain physical data of objects, and the light control system may be further adapted
  • the lighting rules database may contain physical data such as width, height, color, transparency, reflectance etc. of an object such as a mannequin. This physical data can be used to optimize light effect rendering and to take possible blocking of certain light sources by the object into account.
  • the light control system may be further adapted to control appropriate positions of semantic areas contained in the abstract description of the lighting atmosphere corresponding to the detected positions of objects. For example, when an object "cash register" which is connected to a corresponding semantic area is moved, the new location of the object may be used to control the appropriate position of the corresponding semantic area "cash register" in the abstract description.
  • the abstract description may be automatically updated. If the abstract description only names semantic areas and an architecture file gives locations to these areas, then the location information gathered from the inventive light control system than may modify the location in this architecture file only according to a further embodiment of the invention.
  • the light control system may comprise in a further embodiment of the invention a light control interface attached to a lighting infrastructure and being adapted to transmit the created light control values with a lighting control protocol of the light control interface to the lighting infrastructure.
  • the interface allows controlling different lighting systems, i.e. lighting systems with different control protocols.
  • the light control system may be adapted to automatically adjust the created light control values in that the kind of lighting is controlled depending on the detected positions of an object and kind of an object. For example, the light control system may consider the available light units in a new position of an object and the light effects available at the new position, thus allowing better adapting the created lighting atmosphere to the changed environment.
  • the light control system may be adapted to automatically adjust the created light control values in that shadowing effects due to movable objects get automatically compensated for. For example, when a mannequin is moved to a location where it would create a shadow, the light control system may automatically render the light effects for the new location of the mannequin in that the shadow from the mannequin is compensated for.
  • the light control system may be adapted to automatically receive proximity sensor information from an object and to adjust the created light control values accordingly.
  • the proximity sensor information may signal people standing close to the object, and the light control system may then load an alternative set of lighting rules for this object from the lighting rules database and change illumination of the object by adjusting the light control values accordingly, for example from accent lighting to a high color-rendering-index lighting.
  • a reader for continuously reading tag identifications may be provided, wherein the reader may be adapted to be integrated in an object of a light control system and to analyze the read tag identifications, to detect a movement of the object depending on the analysis, and to signal a detected movement of the object.
  • the reader may be adapted to signal the detected movement via a wireless communication connection with the light control system, particularly a command center of the light control system.
  • the wireless communication connection may be for example a radio or an optical link.
  • the reader may be further adapted in an embodiment of the invention to analyze the read tag identifications by detecting changes of the read tag identifications.
  • the reader is able to easily determine any position changes of the object in which it is integrated.
  • the reader may also be further adapted in an embodiment of the invention to signal a detected movement of the object by transmitting detected changes of the read tag identifications. This allows keeping the transmitted amount of data relatively small since data is transmitted only when an object movement is detected by the reader.
  • the reader may be further adapted to analyze the read tag identifications by detecting changes of the read tag identifications.
  • the reader is able to easily determine any position changes of the object in which it is integrated.
  • the reader may also be further adapted in an embodiment of the invention to signal a detected movement of the object by transmitting detected changes of the read tag identifications. This allows keeping the transmitted amount of data relatively small since data is transmitted only when an object movement is detected by the reader.
  • the reader may be further adapted to analyze the read tag identifications by detecting changes of the read tag identifications.
  • the reader simply detects a movement by detecting a change in the read tag identifications since this is usually a clear indication that the object was moved to another location in the neighborhood of different tags.
  • the kind of movement detection may be implemented at relatively low cost, since only a comparison of received tag identification is required for detecting a movement.
  • the reader may be further adapted in an embodiment of the invention to signal the intensity of a signal containing read tag identification together with a detected movement of an object.
  • the signaled intensity could be used for more exact position detection, since it allows estimating the distance of a tag which transmitted the signal and the reader having received the signal with the tag identification.
  • the reader may be in an embodiment of the invention combined with a light sensor for measuring photometric data and may be adapted to transmit measured photometric data together with read tag identifications to the light control system for automatic registration of effect locations and properties.
  • the light control system is able to detect the lighting environment more exactly based on this kind of feedback received from the light sensor. A more exact detection of the lighting environment enables are more exact and better adapted lighting control.
  • an object being adapted for usage with a light control system of the invention may be provided, wherein the object may contain a reader of the invention for continuously reading tag identifications from floor or wall embedded tags in the neighborhood of the reader.
  • the object may be for example a mannequin, a cupboard, screening walls etc. or a movable lamp. The latter make it possible for example to automatically recalculate the settings of the movable lamp after lamp movement.
  • the object may comprise in a further embodiment of the invention a proximity sensor for detecting whether people are standing close to the object, and it may be adapted to signal people standing close to the object.
  • a proximity sensor for detecting whether people are standing close to the object, and it may be adapted to signal people standing close to the object. This allows controlling special light effects depending on for instance shopper's activity. For example, when a mannequin attracts a lot of shoppers, this may be detected by means of the proximity sensor and processed by the light control system to adapt the light effects used to illuminate the mannequin.
  • Embodiments of the invention also relate to calibration methods for the ight control system.
  • One embodiment of the invention provides a method for calibrating a light control system of the invention, wherein - the locations of tags in a lighting environment are detected with sensing devices combined with readers of the invention, and
  • the sensing devices combined with readers may be implemented as a kind of vehicle, such as a floor care device, which autonomously navigates by means of for example a tagged floor.
  • a further embodiment of the invention provides a method for calibrating a light control system of the invention with a tag registration device comprising a reader of the invention, wherein
  • the position of the tag registration device is recorded with a camera while tag identifications get recorded with the tag registration device and
  • the registration device may be also implemented as a kind of vehicle such as a floor care device and able to autonomously navigate my means of a tagged floor.
  • the registration device may also comprise a signal lamp in order to make registration with the camera also possible in a dark environment.
  • the camera may be for example a dark room calibration camera used for calibrating a lighting system controlled by the light control system.
  • a further embodiment of the invention relates to a method for controlling a lighting system by automatically detecting the position of objects, comprising
  • the method may further comprise
  • the method may further comprise
  • the lighting rules database may contain physical data of objects
  • the method may further comprise - retrieving physical data of an object from the lighting rules database and using the retrieved physical data for optimizing light effect rendering during automatically creating light control values from the abstract description of the lighting atmosphere.
  • the method may comprise
  • the method may comprise
  • the method may further comprise - automatically adjusting the created light control values in that shadowing effects due to movable objects get automatically compensated for.
  • a computer program is provided, wherein the computer program may be enabled to carry out the method according to the invention when executed by a computer.
  • a record carrier such as a
  • CD-ROM compact disc-read only memory
  • DVD digital versatile disc
  • memory card any suitable storage medium
  • floppy disk or similar storage medium may be provided for storing a computer program according to the invention.
  • a computer may be programmed to perform a method according to the invention and may comprise communication means for communicating with a lighting system.
  • Fig. 1 shows an architectural view of an embodiment of a light control system according to the invention
  • Fig. 2 shows a lighting environment with a mannequin and RFID tags embedded in the floor for detecting the position of the mannequin in the lighting environment.
  • a light control system may comprise a so-called rendering pipeline which enables automated translation of one specification of a light scene or lighting atmosphere, i.e. the abstract description, into a scene or atmosphere, respectively, rendered in accordance with the available light modules.
  • a so-called abstract (atmosphere) description language ADL
  • the specification is the abstract description of a lighting atmosphere in ADL.
  • ADL One of the roles of ADL is to allow the description of a light scene or lighting atmosphere without -among others- any explicit knowledge about the particularly installed lighting hardware or the specific layout of the room. This ability provides high flexibility and portability to design light scenes.
  • an abstract atmosphere description is created.
  • the abstract description merely contains descriptions of lighting effects at certain semantic areas or locations at certain semantic times/occasions. The lighting effects are described by the type of light with certain parameters.
  • the abstract description is shop layout and lighting system independent. Thus, it may be created by a lighting designer without knowledge about a specific lighting system and lighting environment such as a room layout. The designer must know only semantic locations of the lighting environment, for example "cash register” or "shoe box 1", “shoe box 2", “changing cubicle”, “coat stand” in a shoe or fashion shop.
  • GUI When using a GUI for creating the abstract description, it may be for example possible to load a shop layout template containing the semantic locations. Then the designer can create the lighting effects and the atmosphere by for example drag and drop from a palette of available lighting effects.
  • the output of the computer program with the GUI may be a XML file containing the abstract description.
  • the abstract description is then automatically translated into control values for the different lighting devices or units, i.e., lamps of a specific instance of a lighting system. During this automatic translation process, an architecture description file containing the absolute positions of the semantic areas (architecture information) is processed.
  • the positions of movable objects such as mannequins that give architecture information for the position of the semantic areas, used to describe the lighting effects, may now be automatically considered in the above described process.
  • changes of sensor or lamp locations may be automatically recognized and used to automatically initiate a consecutive new rendering process with updated location information according to the invention.
  • positions of objects that could eventually shadow the light effects may be considered during the automatic process of creating a lighting atmosphere.
  • RFID Radio Frequency Identification
  • NFC Near Field Communication
  • RFID Near Field Communication
  • the positioning technology enables to automatically determine where movable objects are located and to automatically adapt the lighting conditions accordingly.
  • RFID technology may be used to easily adapt targeted lighting when shop furniture or display objects get moved.
  • the new position of an object may be detected by an RFID reader in the object, which reads RFID tags that are incorporated in a dense matrix in the floor covering. Each tag has a unique identification.
  • the object sends the identification of the tags within reach of the reader over a data connection, e.g. wirelessly via ZigBee, into the light control system.
  • a data connection e.g. wirelessly via ZigBee
  • the abstract lighting atmosphere description file (architecture file) containing the position information of all semantic areas of a room or a building with a lighting system gets automatically modified to reflect the actual positions. The result is that if a tagged object is being moved, the lighting effect may "move" with it automatically.
  • an automated control of lighting for (e.g. shop) furniture or other display objects may be provided, where the lighting is automatically adapted to the position of the furniture or accessories.
  • FIG. 1 shows a light control system 10 according to the invention, which comprises the following components: • An RFID tag reader 12 embedded into the bottom of some movable object 14, for example furniture or a mannequin.
  • RFID tags 16 fitted into the surface of a room, for example embedded in a carpet, a floor material, or a wall material.
  • a command center 20 receives over this radio link 18 messages from the RFID reader 12 when an RFID tag 16 is detected and is adapted to control appropriate positions of semantic areas.
  • a light control interface 22 attached to the lighting infrastructure 24 may be any available lighting control protocol, e.g. DMX or DALI, or a proprietary one.
  • the RFID reader 12 is constantly reading RFID tags 16 by transmitting tag identification request signals. If a RFID tag 16 is located within the range of the transmitted signals it responses with a tag identification response signal.
  • the tag identification response signal contains identification (ID) of the responding RFID tag.
  • the RFID reader 12 compares the received ID with the previous one and if the ID has changed, it sends the new ID over the radio link 18 to the command center 20 of the light control system 10, together with identification of the RFID reader 16 itself. If multiple IDs, i.e. IDs from several RFID tags 16, are readable all can be transmitted to the command center 20 and used in combination to estimate the position of the RFID reader 12 between RFID tags 16. Also the intensity of a received tag signal could be used for a better estimation of the position of the RFID reader 12.
  • the command center 20, which may be implemented by a Personal
  • Computer executing software for creating a lighting atmosphere from an abstract atmosphere description, receives the (changed) ID or IDs and the identification of the RFID reader 16.
  • the command center 20 has access to a lamp capabilities database 26, a RFID tag position database 28, and an object lighting rules database 30.
  • the command center 20 looks up the lighting rules for the object in database 26 using the received identification of the RFID reader 16. Then, it determines the position of the object containing the RFID reader 16 by consulting the "tag positions" database 28.
  • the architecture description file containing the absolute positions of the semantic areas gets actualized with the position information.
  • the command center 20 selects the appropriate light units and sets them to the correct dimming level to illuminate the object in its new position with the right color and brightness. Furthermore, it switches off (or dims to a selected default dim level) the lamps that were used to illuminate the object in its previous position, but are now no longer needed.
  • Fig. 2 shows a typical lighting environment of a shop with a mannequin 14 as movable object.
  • the mannequin is lighted by spotlights 24 mounted in the ceiling of the shop.
  • RFID tags 16 are embedded.
  • Each RFID tag 16 contains an unique RFID.
  • the mannequin contains a RFID Reader which continuously reads the RFIDs of the RFID tags 16 close to the mannequin 14, i.e. within the radio link range of the RFID reader.
  • the received RFIDs are transmitted from the RFID reader in the mannequin 14 with its own ID to the command center 20 (see Fig. 1), which retrieves the absolute positions of the RFID tags by means of the tag positions database 28.
  • the position of the mannequin 14 may be detected by the command center 20 and used for controlling the lighting created by the light units 24.
  • the movable object also contains a proximity sensor to detect whether people are standing close to the object. This information is also sent to the command center 20.
  • an alternative set of lighting rules for this object might be available in the object lighting rules database 30 and the light control system 10 changes the illumination accordingly, e.g. from accent lighting to a high color- rendering-index lighting.
  • movable lamps like e.g. LED ball lamps, can be equipped with RFID readers in order to detect their position.
  • the database 30 with object lighting rules also holds physical data of the object, particularly width, height, color, transparency, reflectance, etc., that the command center 20 can use to optimize light effect rendering and take possible blocking of certain light sources by this object into account.
  • the location of all RFID tags 16 should be stored in the tag positions database 28.
  • the RFID tags 16 shall be written at manufacturing time with X, Y coordinates. Envisage a tag- printer that prints the tags on a carpet row by row. As long as it is in the same row, it increases the X coordinate by 1 for each next tag. When printing the next row, it resets X to the start value and increments the Y coordinate. X and Y can start both at 0. It is ensured that they are unique by also embedding a manufacturerID and productID as additional data in each tag. When the carpet is installed, only the X, Y coordinates of the tags at the four corners need to be read. The coordinates of all the other tags can then be derived by interpolation.
  • the reader 12 is combined with a light sensor to allow for measurements of photometric data at the RFID positions and automatic registration of effect locations and properties.
  • this can be directly correlated to darkroom calibration data gathered with digital images. In this way the system can, by placing light sensors during dark room calibration in interesting locations for semantic areas, automatically register the related RFIDs.
  • An alternative position registration method can use a reader together with a small light source that gets registered by the dark room calibration camera while it is moved over the floor. Every time a new RFID is detected, the system remembers the position of the small signal lamp.
  • This signal lamp could be monochromatic, e.g. a LED lamp, that can easily be distinguished from surrounding light , for example a warm white light and a blue LED on the registering appliance.
  • This register appliance can be integrated in a floor service device. Then the registration can be done without additional manpower required.
  • a robotic cleaning device navigated by means of the RFID tags might be followed with the camera to register every RFID tag automatically. This can easily be done without human interaction. To support this registration a visible lamp that gets registered by the camera mounted on the cleaning device is beneficial.
  • a light control system that automatically adjusts light effects when object positions change •
  • the floor care device may be manually operated or automatically navigating by means of the tagged floor.
  • a light control system as above that automatically recalculates lamp setting when a movable lamp is moved.
  • the invention is particularly applicable to complex lighting systems, especially for shops, flexible meeting rooms and hospitals, which may be controlled with an automatic creation of lighting atmospheres from abstract descriptions.
  • At least some of the functionality of the invention may be performed by hard- or software.
  • a single or multiple standard microprocessors or microcontrollers configuration may be used.
  • the invention might be implemented by single or multiple algorithms.

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Abstract

Cette invention concerne un système et un procédé permettant de commande un système d'éclairage par détection automatique de la position d'objets. Une idée de base de cette invention consiste à détecter automatiquement les positins d'objets, plus particulièrement des objets mobiles tels que des mannequins, puis à commander un système d'éclairage en fonction de ces positions détectées par traitement automatique des positions détectées dans un processus consistant à créer une certaine ambiance lumineuse générée par le système d'éclairage à partir d'une description abstraite de l'ambiance lumineuse (description abstraite d'ambiance). Un mode de réalisation décrit dans cette invention concerne un système de commande d'éclairage (10) équipé d'une détection automatique de la position d'objets (14). Le système de commande d'éclairage (10) est conçu pour créer automatiquement des valeurs de commande d'éclairage afin de restituer des effets d'éclairage associés aux objets, pour détecter automatiquement les positions des objets (14), et pour régler automatiquement les valeurs de commande d'éclairage créées en fonction des positions des objets (14) détectées.
PCT/IB2008/052567 2007-06-29 2008-06-26 Système de commande d'éclairage à détection de position automatique d'objets et procédé permettant de commander un système d'éclairage par détection automatique de la position d'objets WO2009004539A1 (fr)

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EP07111417.7 2007-06-29
EP07111417 2007-06-29

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JP2015536528A (ja) * 2012-10-17 2015-12-21 コーニンクレッカ フィリップス エヌ ヴェＫｏｎｉｎｋｌｉｊｋｅ Ｐｈｉｌｉｐｓ Ｎ．Ｖ． 物体に照明を当てるための方法及び装置
WO2014060874A1 (fr) * 2012-10-17 2014-04-24 Koninklijke Philips N.V. Procédés et appareil pour appliquer un éclairage sur un objet
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