EP2375870A2 - Procédé et système de commande d'éclairage - Google Patents

Procédé et système de commande d'éclairage Download PDF

Info

Publication number
EP2375870A2
EP2375870A2 EP11161310A EP11161310A EP2375870A2 EP 2375870 A2 EP2375870 A2 EP 2375870A2 EP 11161310 A EP11161310 A EP 11161310A EP 11161310 A EP11161310 A EP 11161310A EP 2375870 A2 EP2375870 A2 EP 2375870A2
Authority
EP
European Patent Office
Prior art keywords
luminaire
color
illumination
daylight
color temperature
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.)
Granted
Application number
EP11161310A
Other languages
German (de)
English (en)
Other versions
EP2375870B1 (fr
EP2375870A3 (fr
Inventor
Günther SEJKORA
Günther Johler
Jens Beecken
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.)
Zumtobel Lighting GmbH Austria
Original Assignee
Zumtobel Lighting GmbH Austria
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 Zumtobel Lighting GmbH Austria filed Critical Zumtobel Lighting GmbH Austria
Publication of EP2375870A2 publication Critical patent/EP2375870A2/fr
Publication of EP2375870A3 publication Critical patent/EP2375870A3/fr
Application granted granted Critical
Publication of EP2375870B1 publication Critical patent/EP2375870B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/20—Controlling the colour of the light
    • H05B45/22—Controlling the colour of the light using optical feedback
    • 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
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/20—Controlling the colour of the light
    • 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
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/20—Controlling the colour of the light
    • H05B45/24—Controlling the colour of the light using electrical feedback from LEDs or from LED modules

Definitions

  • the present invention relates to a method for controlling at least one light source for achieving illumination with a desired color or color temperature. Furthermore, the present invention relates to a corresponding light control system for carrying out the method according to the invention.
  • a certain area for example, the surface of a table or a wall area appear in a particular color or with a desired color temperature
  • the ultimately resulting illumination in the area does not depend solely on the used and controllable light source but also influenced by other factors.
  • the influence of the daylight entering through the window is relatively large and can lead to the illumination ultimately resulting in the area deviating significantly in terms of its color or color temperature from the light emitted by the light source or lamp. So it is Corrective actions required to take into account the influence of daylight.
  • the present invention is therefore based on the object to provide a novel way to control the light output of a lamp, in which a lighting with a desired color or color temperature is achieved in a fast and reliable manner in a range, the above-described transient response is largely suppressed ,
  • the inventive method is characterized by the fact that no control is carried out in the classical sense but instead suitable control values for the luminaire are calculated.
  • suitable control values for the luminaire are calculated.
  • the influence of the natural daylight is first calculated and, based on this, a suitable control value for the luminaire is calculated and transmitted to it.
  • the current actual value of the illumination is again first determined. Based on this, however, supplementary information is taken into account in order to determine a suitable light output by calculation. As a result, the previously described transient response can be suppressed.
  • the intensity and the color of the light emitted by the light can be calculated, for example, on the basis of the current control value of the light. This information is immediately available and can therefore be taken into account appropriately.
  • the above-mentioned steps can be repeated again. In this case, a correction would then be made in a further step. Theoretically, these cycles could be repeated in any number. However, after one or two cycles, as a rule, the resulting illumination will deviate only insignificantly from the specified target value.
  • the influence of daylight is taken into account by emitting a light corresponding to a color locus which differs from the desired color locus.
  • By mixing between daylight and artificial light ultimately results in a lighting that corresponds to the desired color location.
  • the light output of the light source has to be modified with regard to the color of the daylight.
  • the problem may now arise that not at the same time lighting with the desired color and desired intensity can be obtained.
  • this will be the intensity of the illumination since the brightness is usually more relevant than the color.
  • the inventive method is not limited to a single light source but can of course be extended to a variety of light sources.
  • FIG. 1 Shown is a room 100 in which a table 105 is located with a work surface 106.
  • An illumination of the room 100 and in particular of the work surface 106 is carried out with the help of arranged on the ceiling of the room 100 lights 107-109, which are variable in terms of their light output. In particular, there is the possibility of intensity and to change the color of the emitted light.
  • the control of the three lights 107-109 takes place via a control unit 110.
  • the working surface 106 of the table 105 is also influenced by the natural daylight, which can enter the room 100 through a window 101.
  • a blind 102 At the window 101 is a blind 102, over which the influence of daylight can be reduced.
  • complete suppression of daylight is often undesirable.
  • control unit 110 must adjust the light output of the lights 107-109 such that the resulting mixed light consisting of the artificial light and the outside light has the desired color location. This is done in the context of the method according to the invention, which will be described in more detail below.
  • the light control system has a sensor 120, which is arranged, for example, on the ceiling of the room 100.
  • the position of the sensor 120 may also be changed, but substantially, the sensor 120 is capable of determining the intensity and color location of the illumination present on the table surface 106. This information is transmitted from the sensor 120 to the control unit 110.
  • FIG. 3a shows the sequence of the method according to the invention.
  • FIG. 3b shows the resulting adjustment of the illumination to the desired color location compared to a classic scheme.
  • the vertical axis characterizes a color parameter of the light.
  • the color of the light output is determined only by a single parameter. In the present case, it could be, for example, the color temperature.
  • the illumination has a color temperature T.
  • the inventive method consists of several individual steps, which in FIG. 3a are shown and explained below.
  • a first step 10 the current color location of the illumination present on the table surface 106 is first determined with the aid of the sensor 120.
  • step 11 the intensity and the color location of the light emitted by the lights are determined. This can be done on the basis of the known current control values for the lights, which allow a conclusion on the emitted light.
  • control unit 110 Based on the information obtained in steps 10 and 11, the influence of natural daylight is then calculated in step 12.
  • the control unit 110 thus, what is the proportion of daylight.
  • the color location of the daylight is determined.
  • control values for the luminaires are then calculated in a further step 13, which arithmetically suitable for causing illumination of a table surface 106 when the artificial light is mixed with the daylight, which corresponds to the desired value T with respect to its color temperature. These control values are then transmitted to the luminaires.
  • FIG. 3b The result of this procedure can FIG. 3b be removed.
  • the set values to the lamp at the time t 1 In contrast to the continuous adjustment in the frame of the scheme is to be transmitted the set values to the lamp at the time t 1, so that directly receive a light with the color temperature value T. 1 Ideally, this already largely corresponds to the desired value T.
  • step 14 Due to thermal changes of the light sources or aging phenomena, however, the case may arise that the resulting color temperature value T 1 deviates from the desired value T. This will be checked in step 14. Should it be determined that the deviation exceeds a predetermined limit, steps 11-13 are repeated (the current color actual value is already known due to the check in step 14). At the time T 2 , in turn, new control values are transferred to the lights, and the optimized color temperature value T 2 now results. This cycle could be repeated many times. Usually, however, it will already be after or Two steps result in a lighting that corresponds largely to the desired lighting. If, therefore, it is determined in step 14 that the resulting illumination within a predetermined limit has the desired color temperature value, the method is ended.
  • the artificial light is selected in a targeted manner such that it compensates the influence of daylight in a suitable manner.
  • the problem may arise that to compensate for the daylight, an artificial light is required, which indeed leads to the desired color, but ultimately leads to illumination with insufficient brightness.
  • the intensity of the illumination is preferably higher Prioritized and then adjusted the color as much as possible.
  • a control system will be explained schematically, which is preferably used for carrying out the method according to the invention.
  • This brings advantages in particular when several areas of the room are to be illuminated in different ways. Basically, this would require several individual sensors that record and evaluate the respective area.
  • the system according to FIG. 4 is characterized by the fact that in turn only a single sensor unit is used.
  • This provided with the reference numeral 120 sensor unit comprises an imaging digital sensor 21 with associated optics 22, means for processing the image data 23 and in particular a unit 24, which analyzes the image data and generates based on control information, which provides information about the intensity and the individual areas Color of the present lighting included.
  • individual sections of the sensor 21, which may be formed for example by an RGB CCD sensor, detected, analyzed and evaluated. These respective areas would be the Areas correspond, which would have to be monitored by small sensors when using classical sensors.
  • the information captured by the sensor unit 120 is then transmitted to the control unit 110, which takes into account this information in the manner described above and generates the control values for the lamps based thereon. Desired setpoint values for the illumination can be input via corresponding operating devices or input devices 111, which are coupled to the control unit 110.

Landscapes

  • Circuit Arrangement For Electric Light Sources In General (AREA)
EP11161310.5A 2010-04-09 2011-04-06 Procédé et système de commande d'éclairage Active EP2375870B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102010003802A DE102010003802A1 (de) 2010-04-09 2010-04-09 Verfahren und System zur Lichtsteuerung

Publications (3)

Publication Number Publication Date
EP2375870A2 true EP2375870A2 (fr) 2011-10-12
EP2375870A3 EP2375870A3 (fr) 2014-06-18
EP2375870B1 EP2375870B1 (fr) 2017-03-01

Family

ID=44486136

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11161310.5A Active EP2375870B1 (fr) 2010-04-09 2011-04-06 Procédé et système de commande d'éclairage

Country Status (3)

Country Link
EP (1) EP2375870B1 (fr)
DE (1) DE102010003802A1 (fr)
PL (1) PL2375870T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2547643A (en) * 2016-02-29 2017-08-30 Ping Lai Chung Modeling illumination device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011081097A1 (de) 2011-08-17 2013-02-21 Siemens Aktiengesellschaft Verfahren zur Steuerung und Regelung eines Lichtsystems

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10500534A (ja) * 1995-03-10 1998-01-13 フィリップス エレクトロニクス ネムローゼ フェンノートシャップ 昼光レベルの影響下での人工光の色温度制御用照明装置
AT412825B (de) * 2001-05-16 2005-07-25 Siemens Ag Oesterreich Verfahren zur regelung der lichtverhältnisse in einem von einer in ihrer farbtemperatur veränderbaren lichtquelle beleuchteten bereich
US7950832B2 (en) * 2006-02-23 2011-05-31 Panasonic Electric Works Co., Ltd. LED luminaire
US8183785B2 (en) * 2006-06-28 2012-05-22 Koninklijke Philips Electronics N.V. Method of controlling a lighting system based on a target light distribution
JP5362725B2 (ja) * 2007-09-11 2013-12-11 コーニンクレッカ フィリップス エヌ ヴェ アンビエント光補償センサ及び手順
US7595786B2 (en) * 2007-11-13 2009-09-29 Capella Microsystems, Corp. Illumination system and illumination control method for adaptively adjusting color temperature

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2547643A (en) * 2016-02-29 2017-08-30 Ping Lai Chung Modeling illumination device

Also Published As

Publication number Publication date
EP2375870B1 (fr) 2017-03-01
PL2375870T3 (pl) 2017-09-29
DE102010003802A1 (de) 2011-10-13
EP2375870A3 (fr) 2014-06-18

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