WO2010124902A2 - Procédé et dispositif pour régler une valeur de consigne de luminosité d'une lampe - Google Patents

Procédé et dispositif pour régler une valeur de consigne de luminosité d'une lampe Download PDF

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Publication number
WO2010124902A2
WO2010124902A2 PCT/EP2010/053486 EP2010053486W WO2010124902A2 WO 2010124902 A2 WO2010124902 A2 WO 2010124902A2 EP 2010053486 W EP2010053486 W EP 2010053486W WO 2010124902 A2 WO2010124902 A2 WO 2010124902A2
Authority
WO
WIPO (PCT)
Prior art keywords
brightness
luminaire
brightness value
lamp
setpoint
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/EP2010/053486
Other languages
German (de)
English (en)
Other versions
WO2010124902A3 (fr
Inventor
Axel Pilz
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.)
Osram GmbH
Original Assignee
Osram GmbH
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 Osram GmbH filed Critical Osram GmbH
Publication of WO2010124902A2 publication Critical patent/WO2010124902A2/fr
Publication of WO2010124902A3 publication Critical patent/WO2010124902A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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]
    • H05B45/10—Controlling the intensity of the light
    • H05B45/14—Controlling the intensity of the light using electrical feedback from LEDs or from LED modules
    • 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]
    • H05B45/10—Controlling the intensity of the light
    • H05B45/12—Controlling the intensity 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
    • 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
    • H05B47/11—Controlling the light source in response to determined parameters by determining the brightness or colour temperature of ambient light
    • 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 method and a device for setting a brightness setpoint of a lamp and a corresponding lamp.
  • the constant brightness impression is achieved by keeping a brightness setpoint as constant as possible.
  • the proportion of artificial light can be changed manually until the resulting brightness value is set
  • Total brightness of artificial light and daylight corresponds to the desired brightness. This value is then stored manually as the brightness setpoint.
  • a switch-on threshold or a switch-off threshold are set manually via corresponding control elements.
  • both the dimmable and the non-dimmable luminaire must each be laboriously set to the desired brightness setpoint. This causes a considerable adjustment effort in the event that a variety of adjustable lights are mounted, for example in the form of individual ceiling lights.
  • the brightness setpoint for example, due to different office equipment (eg dark instead of bright carpets) change, so that a renewed adjustment of the brightness setpoint is necessary. If the adjustment is not made, improper illumination may result in an unsuitable working environment.
  • the object of the invention is to avoid the above-mentioned disadvantages and in particular to provide an efficient way to set a brightness setpoint of a luminaire.
  • the luminaire thus determines its own contribution to the ambient light and can thus determine the brightness setpoint or switch-on and switch-off thresholds determine without the need for manual intervention by a user.
  • the brightness setpoint generally corresponds to a default value regarding a total brightness of light and ambient light emitted from the lamp.
  • compliance with the setpoint can be achieved by means of the turn-on and turn-off thresholds using the ambient light, e.g. of daylight.
  • the lamp mentioned here may also include a lighting system with a plurality of bulbs.
  • a control system for setting a plurality of lighting means may be provided.
  • a refinement is that a multiplicity of first brightness values and a multiplicity of second brightness values are measured and an adjustment of the brightness desired value is carried out as a function of the multiplicity of first and second brightness values.
  • a controller e.g. in the form of a processor unit, which stores a plurality of measured values, and depending on several of the measured values (for example, they may become increasingly significant over time, i.e., old measured values may be weighted correspondingly lower) determine the brightness setpoint.
  • first brightness values and / or the second brightness values are measured at least partially iteratively or at specific times. Thus, it is possible, for example, that each time the lamp is switched off again, first and second brightness values are determined.
  • first and / or second brightness values it is possible for individual first and / or second brightness values to have little or no influence on the adaptation of the brightness setpoint, if these are not within a predetermined range.
  • measurements that are most likely based on an atypical situation or a measurement error can be sorted out.
  • a switch-on threshold of the luminaire is determined on the basis of a difference between the first brightness value and the second brightness value.
  • a switch-off threshold of the luminaire is determined on the basis of the switch-on threshold plus a predetermined tolerance.
  • a next development is that a hysteresis is provided between the switch-off threshold and the switch-on threshold of the luminaire.
  • One embodiment is that the first brightness value is measured immediately before the luminaire is switched off.
  • the lamp can be turned off manually or automatically (for example, via the brightness control).
  • first the first brightness value can be measured, then the light is switched off and then the second brightness value is measured.
  • the "Turn off the light” process will provide the trigger for the measurements and for turning off the light.
  • An alternative embodiment is that the first brightness value and / or the second brightness value is / are measured using at least one sensor.
  • the at least one sensor comprises a brightness sensor, in particular a photodiode, a photoresistor or a phototransistor.
  • the lamp is a dimmable lamp.
  • a brightness setpoint of the luminaire based on a first brightness value measurable by the at least one sensor and based on a second brightness value measurable by the at least one sensor, wherein - Before switching off the lamp, the first brightness value can be measured;
  • the second brightness value is measurable; - The brightness setpoint based on the first brightness value and on the basis of the second brightness value is adjustable.
  • the lamp has at least one lamp, wherein the
  • Illuminant may preferably comprise an optical system.
  • the light-emitting means may be a semiconductor light-emitting element, in particular a light-emitting diode.
  • Fig.l schematically shows a curve that is a linear
  • FIG. 2 shows a hysteresis curve A-c-B-d for illustrating an on-off behavior of the luminaire depending on the brightness
  • a luminaire comprising a luminous means, in particular two sensors, one
  • the approach proposed here allows automatic determination of a brightness setpoint of a luminaire. Furthermore, on and off thresholds for the luminaire can be determined automatically.
  • the luminaire mentioned here is, for example, a lighting system comprising at least one light source. Each bulb can have its own optics.
  • light sources are semiconductor elements, such as light emitting diodes used.
  • the luminaire has at least one sensor for measuring brightness.
  • the sensor may comprise a photodiode and / or a phototransistor and / or a photoresistor.
  • the sensor has a linear or essentially linear relationship between the detected measured value and a brightness.
  • FIG. 1 schematically shows a curve 101 which illustrates a linear dependence of a measured value of the sensor on a brightness.
  • a brightness value I is measured and after switching off the luminaire, a brightness value II is measured.
  • Measurement of the brightness values I and II are chosen a relatively short period of time, so that the risk of falsification of the result by changing ambient light influences is low.
  • a brightness change d 1 caused by the artificial light of the luminaire can be determined.
  • This change in brightness d 1 corresponds to the linear relationship between the curve shown in the curve 101 Measured value and the brightness of that brightness, which is achieved, for example without daylight content (and / or without proportion of ambient light) by the artificial light of the lamp.
  • This change in brightness d 1 is again a value that is used in the lighting design of the luminaire or a
  • Lighting system comprising this lamp has been determined such that a minimum illuminance, e.g. a job is safely achieved.
  • the change in brightness d 1 corresponds to a brightness that ensures adequate illumination of the workstation in the absence of any ambient light.
  • a measured value A in FIG. 1 indicates a brightness below which the luminaire is to be switched on (switch-on threshold).
  • FIG. 2 shows a hysteresis curve A-c-B-d for illustrating an on-off behavior of the luminaire depending on the brightness.
  • the illumination by the lamp as well as an influence of the ambient light give a total brightness according to a point c in Fig.2.
  • the luminaire is switched off with increasing ambient light at a point B.
  • Point B is the brightness change d1 and an additional brightness difference ⁇ (e.g., 10%) above the brightness of point A.
  • the measurement of the brightness change d 1 caused by the luminaire takes place correspondingly.
  • the point A can be determined, from which (or when it falls below), the lamp is turned on.
  • the point B for switching off the dimmable luminaire may be slightly above the switch-on threshold A, e. G., Irrespective of the brightness change dl. on A + 10%.
  • the hysteresis curve shown schematically in Figure 2 is correspondingly narrower and shallower.
  • switch-on threshold A, switch-off threshold B In order to enable an efficient determination of the brightness setpoint, it is possible to check before the storage of the corresponding threshold values (switch-on threshold A, switch-off threshold B) whether the brightness change d 1 lies in a predefined (meaningful) range and / or if the measured values provided by the at least one sensor lie in a (largely) linear region of the respective sensor element.
  • the storage takes place, for example, in previously unused lights or at too high daylight rate.
  • the brightness setpoint determination can be carried out automatically iteratively, for example at certain predefined times, for example during a day or during different days.
  • the determined measured values can be individually weighted and the brightness setpoint can be tracked on the basis of the weighted measured values. It is thus possible for the luminaire to independently adjust the brightness setpoint for changing conditions, eg changes in the furnishing of an office. It is also possible that excessive changes are treated as measurement errors, discarded or weighted correspondingly weak. This has the advantage that the adapting lamp responds mainly to continuous changes and less to short-term changes.
  • the luminaire or the control unit of the luminaire has a provisional desired value as the brightness setpoint and adapts itself in the mounted environment.
  • Such an adaptation can e.g. initially fast, because not many measurements are available and the first measurements have a higher weighting accordingly.
  • the luminaire may self-illuminate within the given measurements with a larger time constant, e.g. as part of an averaging of the last x measurements, adapt.
  • a luminaire 306 comprising a luminous means 301, two sensors 302, 303, a controller 304 and an operating element 305.
  • FIG. 3 shows, by way of example, the two sensors 302, 303. It is also possible for only one sensor or a multiplicity (including different sensors) to be provided.
  • the controller 304 may be implemented as a microcontroller, a processor, or the like. with a corresponding usual
  • Circuit (memory, input-output interface, etc.) to be executed.
  • the control element 305 is optional and may have switches, buttons, potentiometers and display elements.
  • the light source 301 is driven by the controller 304.
  • a driver circuit (not shown) may be provided for this purpose.
  • the sensors 302, 303 provide measured values, which are preferably proportional to a recorded brightness.
  • the control element 305 is connected to the controller 304.

Landscapes

  • Circuit Arrangement For Electric Light Sources In General (AREA)

Abstract

L'invention concerne un procédé et un dispositif pour régler une valeur de consigne de luminosité d'une lampe. Selon l'invention, une première valeur de luminosité est mesurée avant l'extinction de la lampe, une seconde valeur de luminosité est mesurée après l'extinction de la lampe et la valeur de consigne de luminosité est réglée à l'aide de la première et de la seconde valeur de luminosité. L'invention concerne en outre une lampe correspondante.
PCT/EP2010/053486 2009-04-28 2010-03-17 Procédé et dispositif pour régler une valeur de consigne de luminosité d'une lampe Ceased WO2010124902A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009019157A DE102009019157A1 (de) 2009-04-28 2009-04-28 Verfahren und Vorrichtung zur Einstellung eines Helligkeitssollwerts einer Leuchte
DE102009019157.7 2009-04-28

Publications (2)

Publication Number Publication Date
WO2010124902A2 true WO2010124902A2 (fr) 2010-11-04
WO2010124902A3 WO2010124902A3 (fr) 2011-03-03

Family

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Application Number Title Priority Date Filing Date
PCT/EP2010/053486 Ceased WO2010124902A2 (fr) 2009-04-28 2010-03-17 Procédé et dispositif pour régler une valeur de consigne de luminosité d'une lampe

Country Status (3)

Country Link
DE (1) DE102009019157A1 (fr)
TW (1) TW201104374A (fr)
WO (1) WO2010124902A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107493640A (zh) * 2017-08-21 2017-12-19 上海肇观电子科技有限公司 一种向目标对象提示信息的方法和装置

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104808721B (zh) * 2015-04-24 2018-06-08 重庆迈科唯医疗科技有限公司 一种控制信号线性输出调节机构
CN111556605B (zh) * 2020-04-21 2022-04-01 宁波大学科学技术学院 台灯工作面恒定亮度的控制方法、系统、存储介质及台灯

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5701058A (en) * 1996-01-04 1997-12-23 Honeywell Inc. Method of semiautomatic ambient light sensor calibration in an automatic control system
US7781713B2 (en) * 2006-02-08 2010-08-24 The Regents Of The University Of California Method for calibrating a lighting control system that facilitates daylight harvesting

Non-Patent Citations (1)

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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107493640A (zh) * 2017-08-21 2017-12-19 上海肇观电子科技有限公司 一种向目标对象提示信息的方法和装置
CN107493640B (zh) * 2017-08-21 2019-07-05 上海肇观电子科技有限公司 一种向目标对象提示信息的方法和装置

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Publication number Publication date
WO2010124902A3 (fr) 2011-03-03
TW201104374A (en) 2011-02-01
DE102009019157A1 (de) 2010-11-11

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