WO2016058848A1 - Procédé de commande d'un système d'éclairage à del et système d'éclairage à del - Google Patents

Procédé de commande d'un système d'éclairage à del et système d'éclairage à del Download PDF

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Publication number
WO2016058848A1
WO2016058848A1 PCT/EP2015/072852 EP2015072852W WO2016058848A1 WO 2016058848 A1 WO2016058848 A1 WO 2016058848A1 EP 2015072852 W EP2015072852 W EP 2015072852W WO 2016058848 A1 WO2016058848 A1 WO 2016058848A1
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WIPO (PCT)
Prior art keywords
led
light
spectrum
control
random
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PCT/EP2015/072852
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German (de)
English (en)
Inventor
Horst-Werner Maier-Hunke
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"Durable" Hunke & Jochheim Gmbh & Co. Kommanditgesellschaft
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Publication of WO2016058848A1 publication Critical patent/WO2016058848A1/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
    • 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
    • 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
    • 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
    • H05B47/155—Coordinated control of two or more light sources
    • 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
    • H05B47/175—Controlling the light source by remote control
    • H05B47/19—Controlling the light source by remote control via wireless transmission
    • 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
    • H05B47/175—Controlling the light source by remote control
    • H05B47/196—Controlling the light source by remote control characterised by user interface arrangements
    • H05B47/1965—Controlling the light source by remote control characterised by user interface arrangements using handheld communication devices
    • 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
    • H05B47/16—Controlling the light source by timing means
    • 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 for driving an LED illumination system, which comprises a plurality of LED arrays, wherein at least a part of the LED arrays in operation light with mutually different light spectra, d. H. with different mean color temperatures, emits. These different light spectra then mix to form a total light spectrum of the LED lighting system.
  • the portions of the light emitted by the LED arrays are controlled within an overall light spectrum, at least a portion of the LED arrays, using a predetermined spectrum control function.
  • An LED array can consist of a single LEDs or multiple LEDs, z. B. include an LED group with several LEDs to be controlled together.
  • the invention relates to a corresponding LED lighting system, preferably an LED light.
  • the user by driving the various LED arrays, the user has the ability to control the overall light spectrum or color temperature of the LED lighting system, i. H. all LED arrangements of this LED lighting system, or at least change the light emitted by a group of LED assemblies and thus to adapt to its current needs and / or mood.
  • the proportions of the light emitted by the LED arrays are controlled within the common overall light spectrum of the LED arrays in accordance with a predetermined, in particular time of day, circadian spectrum control curve.
  • a spectrum control curve could be such that in the morning at the start of work, the blue light component or cold light component is slowly increased in order to further assist the user in his performance during a particularly active phase in the morning, whereas at midday the blue light component is shut down again. to prepare the user for the midday rest by the biological effect of light. After the lunch break, a renewed increase in the proportion of blue light could then be provided, and at the end of the working time, the proportion of blue light in the evening is reduced again slowly, as is also the case in nature.
  • the portions of the light emitted by a part of the LED arrangements, for example a group of LED arrangements, within a total light spectrum of the respective LED arrangement are also controlled using a predetermined spectrum control function.
  • This spectrum control function specifies with which powers the respective LED arrays are operated (relative to one another) in order to obtain a desired overall light spectrum of these LED arrays.
  • the total light spectrum can be defined, inter alia, by a color temperature value or light temperature value (eg an average value or a maximum of the relevant overall light spectrum).
  • this spectral control function is most preferably a melanopically effective, time-dependent, in particular circadian spectrum control function which can optically influence the user's melatonin budget by the light color or the blue component.
  • the LED arrays - which may be the same LED arrays controlled in accordance with the aforementioned spectrum control function, but also other LED arrays of the LED lighting system - may be used
  • Random control pattern is controlled by means of random values and / or pseudo-random values and / or quasi-random values (ie, with real or apparent random numbers generated for the control). In this case, it is also possible that each individual LED arrangement is controlled according to its own random control pattern.
  • An inventive LED lighting system which is preferably an LED light, most preferably a desk lamp, floor lamp, wall light or ceiling light (also suspended light) - has a control arrangement which is designed to match the proportions of at least to control light emitted from a portion of the LED arrays within an overall light spectrum of these LED arrays using a predetermined spectrum control function.
  • the control arrangement is also to form at least a portion of the LED arrays (which as noted may be both the same LED arrays that are also controlled according to a spectrum control function and other LED arrays of the LED lighting system) using a random control pattern of random values and / or pseudo-random values and / or quasi-random values.
  • the control arrangement preferably has a suitable random number generator or pseudo and / or quasi-random number generator which generates corresponding values which can then enter into the control.
  • the spectrum control function preferably comprises a time-dependent, circadian spectrum control curve. Basically, this can also be a simpler spectrum control function, the z. B. specifies a fixed overall spectrum of the relevant LED assemblies, which remains constant until a user engages over a user interface regulating and adjusted the overall spectrum.
  • the spectrum control function in particular the time-dependent spectrum control curve, is superimposed on a random control pattern.
  • This overlay can be done in different ways.
  • the random control may relate to at least a portion of the LED arrays that are also controlled according to the spectrum control function or the spectrum control curve. Additionally or alternatively, however, other LED arrays can also be driven by the random control pattern so that their light then mixes with the light emitted by the LED arrays controlled according to the spectrum control function.
  • this random control pattern can relate to the light intensity, ie the respective LED arrangements are dimmed or the amount of light emitted by them is increased, or with the random control pattern it is preferred to temperature, ie the color spectrum, modified in the manner described above.
  • a change in the color temperature or light temperature usually refers to a group of LED arrangements, ie ultimately the light intensity of the individual LED arrangements is changed relative to each other, so as to the color temperature generated by mixing the emitted light of the respective LED assemblies ( or the common overall spectrum of these LED arrangements). More preferably, both the light intensity and the color temperature are somewhat changed in a certain context.
  • control parameter values for the random control pattern in particular parameter values such as the maximum, the mean, a width (such as the standard deviation) etc. of a frequency distribution of the random values and / or pseudorandom values and / or quasi random values, depending on determined by at least one of the following values:
  • this may include the time of day, ie. H.
  • a specification of the control parameter values by means of a control curve, in particular a circadian curve is possible.
  • this can include the season, d. H. that in summer, for example, different values are used than in winter.
  • this can also take into account the period of time since the start of the LED lighting system, that is, for example, how long the user has been illuminated by the lighting system at his workstation (ie, the previous working time).
  • Sensor values For this purpose, temperature values and / or brightness values, such as, for example, the ambient brightness in the room or else the brightness outside, preferably count. However, barometer values and / or moisture values may also be included for this purpose. ren, the z. B. with a rain sensor or a humidity meter, especially outside in the environment, measured and supplied to the control arrangement.
  • time-dependent definition of the control parameters for the random control pattern allows the respective parameter values of the frequency distribution of the random values (hereinafter the term "random values” is also used for pseudo and / or quasi-random values) as a function of a control function, preferably a time-dependent control curve, particularly preferably a circadian control curve, are determined.
  • This control curve can be, for example, the spectrum control curve for the respective LED arrangements, which are additionally to be controlled with the random control pattern. This is a preferred way, very simply a superposition of the random control pattern on a z.
  • the mean of the frequency distribution for the random control pattern for the control of the entire spectrum always corresponds to the current value of the time-dependent spectrum control curve. This causes a value to be statistically chosen that, according to the frequency distribution of the random values, is in a range around the current value of the spectrum control curve.
  • this frequency distribution is chosen to be very narrow, then the current control values for the light spectrum or the current color temperature are very close to the current value of the given spectrum control curve; On the other hand, if the width of the frequency distribution is chosen to be very broad, statistically speaking, the values deviate more frequently from this spectrum control curve. Particular preference may also be given to fixed limits of the frequency distribution in order to avoid "outliers".
  • the values determined according to the spectrum control function and the random values generated are simply summed up.
  • preference is given to ensuring that the frequency distribution for the random control pattern has a mean value of zero so that the "randomly" mixed total spectrum is around the color temperature given by the spectrum control curve, as well as a possible superposition of randomly controlled light by LED arrays with light that differs from others according to a spectrum Control function controlled LED arrangements is issued.
  • the LED arrays are grouped in or to different light modules.
  • the LED arrangements of different lighting modules can then each be controlled using different, preferably at least largely independent, spectrum control functions (also referred to below as “module control functions").
  • “Largely independent of each other” means that the module control functions are formed in this way are that z. B. certain limits and exclusion criteria are met, z. Example, that if a light module is to ensure that particularly strong cold white light is output, under certain circumstances, the proportion of amber light in another LED array of another light module is limited, as this would be counterproductive. In principle, however, it would also be possible for the module control functions for the different lighting modules to be completely independent of one another.
  • the LED arrays of one light module are controlled using the random pattern, and the LED arrays of another light module are not controlled using a random control pattern but, for example, a fixed spectrum control function that the user changes via a controller. or with a time-dependent spectrum control curve.
  • a light module may preferably be arranged on the LED lighting system in such a way that it illuminates a work area, for example a reading area, a desk top, etc. substantially uniformly.
  • This light module preferably provides for constant illumination (if it is a light module with simple neutral white LEDs) or offers the user, when the light module has, for example, cool white and warm white LED arrangements, the ability to adjust the white light color.
  • another time-dependent spectrum control curve in particular a circadian curve (as a module control function of this light-emitting module) could also be used here.
  • the LED lighting system in particular the LED light, therefore preferably comprises at least one lighting module with at least one neutral LED arrangement and / or LED arrangements in the colors cold white and warm white.
  • the "cool white” LED array emits light in excess of 5000K, more preferably about 6500K or above, and the "warm white” LED array emits light below 3300K, more preferably about 2700K or below.
  • the cool white LED array among other things (besides yellow-red), can emit a high level of light in the range of 450 to 500 nm (presumably light at 480 nm is particularly effective on the retinal ganglion cells), whereas the warm white LED Arrangement emits light with more yellow and red components in the range of 580 to 680 nm.
  • Each LED array preferably comprises a group of LEDs.
  • a lighting module may also preferably be used to simulate a sky lighting scenario.
  • This z. B. particularly strong blue components and Amberanteile be mixed in order to simulate as accurately as possible the blue sky, a Vorüber horr of clouds before the sun, etc.
  • the lighting module which simulates the sky lighting scenario, arranged on the LED lighting system, in particular the LED light, that it emits its light in operation against a ceiling and / or a wall or the upper part of the walls of a room, in which the LED lighting system is arranged.
  • this indirect light spectrum may be circadianly controlled, and in addition, as described above, this circadian control is superimposed on a random control pattern.
  • the LED illumination system in particular the LED lamp, therefore preferably comprises at least one illumination module with at least LED arrangements of the following colors: cool white, warm white, blue and / or amber. It may be preferred to use the blue and cold white LED assemblies together to produce cool white light and the amber and warm white LED assemblies together to produce warm white light. But it is also possible to dim down the cool white and warm-white LED arrangements temporarily and to increase the blue and amber colored proportions to produce appropriate sky colors in particular with a lighting of the ceiling.
  • LEDs with other colors are possible, for example - but not limited - red LEDs, yellow-red LEDs, green LEDs, etc. to be able to set any color temperatures. It makes sense, while the light module that simulates the sky lighting scenario, also to control the total brightness or dimming, with a random control pattern could be used here, as well as in nature, the overall brightness changes irregularly.
  • a simulation of a sky lighting scenario would, in principle, also be possible without a random control, for example by entering fixed patterns for different days, which run a specific program.
  • sensor simulations and / or other data eg from the Internet
  • such a method with program sequences could also be combined with a random control, for example by storing different parameter sets for the parameter values of the frequency distributions for the random control patterns and selecting them as a function of the weather and / or the season.
  • the color temperature of the light spectrum emitted jointly by all the LED arrays of the light module is most preferably adjusted via the current ratio of the current allocated to the individual LED arrays.
  • This control or power distribution principle can also be extended to the entire LED lighting system, for example a complete LED luminaire.
  • the user may unexpectedly be given tasks that require his or her full concentration and performance in the short term. If such events occur shortly before lunchtime or before the end of work, for example, control by means of a spectrum control curve would ensure that more melatonin was distributed to the user through the already pre-reduced cold light component or increase in warm light component, thereby possibly attracting attention and efficiency was lowered. This problem would be compounded if, by chance, an even more reduced blue component is given (eg, a superposition of spectrum control function and random control pattern).
  • At least one LED array for a predefined dose change period-unlike the predetermined control function- is temporarily triggered such that it is operated at a predetermined minimum power or the proportion of the light of this LED array within the total light spectrum of the LED arrays is a certain minimum proportion and that after the predefined dose change period, the LED arrays are driven according to a predetermined control rule so that the total light spectrum or the total color temperature again corresponds to the predetermined spectrum control curve.
  • An LED array which is used in boost mode may be specially reserved for this use, but preferably it is also used in "normal operation" and carries its time-varying proportion to the light spectrum of a light module according to a spectrum control function and / or according to the random control at.
  • the short-term dose change signal can temporarily increase the effect of serotonin or melatonin, it will be simplified as a "boost signal" regardless of whether temporarily a completely or relatively increased proportion of blue light for refreshment or an absolute or relatively increased warm light portion is issued for reassurance.
  • the predefined dose change period is accordingly referred to as the "boost period” or the operating mode in which the LED light or at least the first LED arrangement is operated during the boost period, referred to as "boost mode".
  • control arrangement preferably has at least one short-term dose change interface, preferably a dose-increasing interface (hereinafter also referred to as a "push button" without restricting the invention to a key) and is correspondingly for carrying out the boost mode
  • the boost button may be arranged on an adjustment module in or on the luminaire itself or an associated adjustment module.
  • the relevant LED arrangement is operated in Boost mode with a maximum proportion of the total light spectrum. It is particularly preferred, at least if it has the increased blue content and serves to "refresh" the user, the relevant LED array operated at a maximum power, ie even if it is possible to dim the LED light, such dimming Setting temporarily suspended and a maximum dose of light emitted from the first LED array to temporarily reduce the melatonin secretion as much as possible and thereby enhance the effect of the happiness hormone serotonin.Furthermore, then in Boost mode, the other LED arrangements which do not enhance the desired effect, switched off or at least operated below a defined power.
  • the boost period is preferably at most about 30 minutes, more preferably at most about 20 minutes, most preferably at most about 10 minutes.
  • the approximate "ca.” Is understood to mean that the boost period, for example, still a short rise time with a time constant in the second range, preferably only a few seconds, in which the first LED array can be powered up if an instantaneous change in color temperature is not desired.
  • the provision is made after the boost period to the total light spectrum according to a predetermined control rule.
  • a predetermined control rule basically includes that an instantaneous provision can also be made, ie. H. immediately after the expiry of the period of time, a conversion to the planned at that time shares in the total light spectrum according to the spectrum control curve.
  • this control rule provides that the LED arrays are driven after the boost period has elapsed so that the total light spectrum predetermined by means of the spectrum control function is only reached again over a certain reset period, preferably at least 30 seconds ,
  • the control device can be stored by the control device, at which time a boost signal takes place, and then the number of boost signals received in the time interval from the first reception of a boost signal is then stored and compared with a limit value.
  • the acceptance period is preferably at least four hours, more preferably at least eight hours, and most preferably at least twelve hours.
  • the maximum number of boost signals accepted within the acceptance period is, for example, preferably four, more preferably two. However, this also depends on the length of the acceptance period. In principle, it is also possible to monitor multiple nested acceptance periods, for example, that the boost mode can not be used more than twice in four hours, but not more than four times in twelve hours.
  • a spectrum control curve can preferably be graphically output on a graphical user interface, particularly preferably a touch display, wherein the control curve can also be changed, particularly preferably with the aid of the graphical user interface.
  • a simple display of the current value of the spectrum control curve for example in the manner of a bar chart or the like.
  • Very particular preference is given to both a simple display on an operating module, for example, directly on the lamp, and an additional optional output of the spectrum control curve on a touch display or the like.
  • a spectrum control curve can also be transmitted from a mobile terminal or a PC to a controller of the LED lighting system.
  • the mobile terminal is thus temporarily a part of the control arrangement of the LED lighting system, namely a kind of remote control.
  • a short-term dose change signal can also be transmitted from such a mobile terminal or PC to the control device, for example when the app provides a virtual boost button on a graphical user interface.
  • a mobile terminal here is any device to understand what the user can carry with him and which has suitable storage means and a user interface and an interface for coupling to the controller of the LED lighting system. This includes typical handheld devices, in particular with suitable radio interfaces or the like, such as smartphones, tablet PCs, laptops, watches, glasses, etc.
  • the mobile terminal or the PC only have to have suitable application software (also referred to as "app" in the following), preferably wirelessly, more preferably via a short-range radio link.
  • the connection by means of a Bluetooth interface since most mobile devices now have a Bluetooth interface and also correspondingly suitable Bluetooth modules are available as standard, which are installed in a device-side control module of the LED light.For example, there are already microcontroller, the inner half of the control module can be used in the already Bluetooth functions are integrated including the antennas, so that hereby also a cost-effective interface can be provided.
  • a mobile device with a suitable app can also be used to control multiple LED lights or LED light modules (with different or identical spectrum control curves).
  • a near field communication element eg an NFC tag, an RFID tag or the like
  • a scan code can also be attached to the LED illumination system, for example to the LED light.
  • a suitable app such as this will be explained later.
  • an operating module can also be used directly on the housing of the LED lighting system, in particular the LED light, or mounted elsewhere in the room and connected to the LED lighting system.
  • interpolation point values are preferably specified as interpolation points at different times, and an interpolation function is then determined on the basis of these interpolation points as a spectrum control curve.
  • an interpolation function is then determined on the basis of these interpolation points as a spectrum control curve.
  • up to 24, preferably at least twelve such bases are distributed over the day.
  • Each support point will then have a color temperature value and the respective time available. If, for example, as explained above, an app is used on a smartphone in order to determine or change the spectrum control curve, it is sufficient, for example, only these interpolation points to the control device, for example to the integrated in the LED lamp control module or with it firmly connected control module to convey.
  • the color temperature value as well as the distance of the interpolation point to the next can be transmitted as a value pair per support point.
  • the spectrum control curve could also be transmitted by the control device on the side of the LED light only in the form of a list of points to the app of the terminal, if the spectrum control curve is generated or changed in the control device.
  • the current Interpolation function are determined. Is z. If, for example, this interpolation function is a polynomial of the nth degree, then the associated coefficients of the polynomial can be stored in the LED luminaire-side control device in addition to the interpolation points, so that the current value of the spectral value to be set is determined in a very simple manner at any time. rums control curve found and for the setting - possibly using the random control pattern - can be used.
  • the LED lighting system-side control device can perform its own time measurement with its own clock in the control device.
  • a simple counter is sufficient, if the controller is given a first time from when the spectrum control curve is running so as to achieve a temporal adjustment of the spectrum control curve.
  • polynomials of the third or fourth degree are used as interpolation functions.
  • polynomials of the 2nd degree or, in the simplest case even a polynomial of the 1st degree, ie a section-wise linear interpolation between the interpolation points.
  • changing the spectrum control curve on a graphical user interface may be particularly preferred by adding and / or removing and / or moving bases.
  • the displacement of the support points can be particularly preferably two-dimensional, d. H. a vertex can be moved both in color temperature direction and in time direction. Adding, removing, or moving such a vertex automatically results in a new interpolation function being determined as the new spectrum control curve.
  • the list of interpolation points or at least of the changed interpolation points is transmitted again to the LED illumination system-side control device, which then z.
  • the interpolation function (possibly in sections) also recalculated and deposited new coefficients.
  • the spectrum control curve upon receipt of a manual change signal from a user interface, is locally modified at least temporally.
  • This local modification can be considered at least partially automatically in a subsequent re-run of the spectrum control curve, for example on the next day.
  • This is independent of whether a base of the curve is newly generated, removed or moved or whether, for example, just the current color value manually, for example, on an operating module of the LED lighting system, for. B. using a color controller, using a voice control on the control module or the app, etc. is changed directly by the user.
  • the term "manual" is not to be understood as meaning that the user is manually re-setting but that the local modification of the spectrum control curve is not automatic, but is made specifically by the user for a specific, preferably current, time or period. Ultimately, such a change typically results in locally modifying the spectrum control curve unless the user clearly makes it clear through appropriate inputs to the user interface that he no longer controls the LED lighting system after the spectrum control curve at all wants, but instead wants to manually set a color temperature value fix.
  • Such automatic storage and consideration of local modification in the subsequent passage of the spectrum control curve results in the control with the spectrum control curve being somewhat adaptive. For example, each time (manually) the light color is changed by the user during the control with a spectrum control curve, the reuse of the spectrum control curve may deposit a change in the spectrum control curve such that the manually adjusted variation of the Color spectrum, for example, about 30% (or another share) is taken over. If the user carried out the same modification three times in a row at about the same time, the spectrum control curve would be changed to about 30% on the third day if the changes were accepted, so that the user no longer has to make any further changes. It is also possible to consider not only "normal" manual color light changes by the user, but also the setting of the boost mode.
  • an initialization procedure or parameterization procedure eg during the initialization procedure
  • user-specific parameters via a user interface and based on these user-specific parameters then a user-specific individual start spectrum control curve is determined.
  • the "user-specific” parameters include, for example, the "user-behavior-specific” parameters, such as, for example, For example, when a user usually has to perform or perform which activities, for example, when his work starts, when the work ends, when he makes a lunch break, etc. It also includes “user-specific” parameters, such as when the user would be most willing to perform if they were free to choose, but not “user-specific” parameters, such as lamp turn-on and turn-off times or specific color temperature readings at specific times.
  • the control arrangement of the LED illumination system moreover has at least one dimmer interface and is designed such that the total amount of light of the LED arrangements, that is to say the dimming interface, is provided by means of a suitable dimming signal.
  • the brightness or overall power of the LED lighting system and / or the individual lighting modules is adjustable, preferably independent of the color temperature.
  • This dimmer interface can be arranged, for example, on an LED lighting system-side operating module and / or in an app of a mobile terminal or a PC.
  • the LED lamp and / or the mobile terminal / PC can be equipped with a brightness sensor, via which the brightness of the LED assemblies is controlled ambient light-dependent. It also already existing in the terminal sensors, eg. As a camera to be used with. Likewise, the use of a motion or presence sensor is possible, via which the brightness is regulated as a function of a user presence.
  • An independent control of dimming and color temperature (or light spectrum) of the LED lighting system is understood to mean that, for example, a defined total amount of light or total power of all LED arrangements or all LED arrangements of a separately dimmable lighting modules can be set, which usually does not change until a new dimming signal is received for modification.
  • this overall performance is set, by shifting the power components of the relevant LED arrangements, it is possible to ensure that the color spectrum of the lighting module or of the entire LED lighting system remains the same in accordance with the spectrum control function, if necessary also while using the overall performance the random control pattern, changed.
  • the dimming is disabled and z. B. actually a maximum power or reduced total power is output.
  • the controller may also be set up such that in the normal course of action a maximum of (total) 80% power is output, which is distributed among the LED arrangements. This is particularly advantageous in a boost mode, when it comes to the user to get as much blue light as possible in the short term, in order to lower the melatonin output.
  • Such a regulation of the light color according to a predetermined spectrum control function, in particular spectrum control curve, with a permanently set dimming value of a group of LED arrangements is preferably carried out by means of a method and a correspondingly designed control arrangement in which the LED devices are driven as mentioned above with a certain current ratio.
  • the LED arrangements are particularly preferably controlled in each case in a pulse width modulation method (PWM method).
  • PWM method pulse width modulation method
  • the power or brightness of the individual LED arrangements is controlled with this PWM method.
  • the LED arrangements, z. B. via at least one switching current regulator or constant current regulator of the control arrangement, with a common total current, in particular a constant current, are operated, and this total current is switched over in time different phases on the various LED arrays.
  • FIG. 1 shows a side view of an exemplary embodiment of an LED luminaire according to the invention
  • Figure 2 is a simplified block diagram of an embodiment of a
  • Control arrangement for an LED luminaire comprising an LED luminaire-side control device and a mobile terminal coupled thereto,
  • FIG. 3 shows a schematic illustration of an example of a spectrum control curve with a superimposed random control pattern
  • FIG. 4 shows a schematic representation of two examples of frequency distributions
  • FIG. 5 shows a schematic representation of an example of a graphical user interface for setting a spectrum control curve
  • FIG. 6 shows a representation of the spectrum control curve according to FIG. 5 after or during a change of interpolation points
  • FIG. 7 shows a schematic illustration of an example of a graphical user interface for the further setting of parameters of a user interface
  • an LED luminaire 100 or table lamp is shown, which can preferably be used as a desk lamp 100.
  • the table lamp 100 comprises a luminous head 50, which here has two light modules 51, 52 each having a plurality of LED arrangements for light generation.
  • a lighting module 51 is directed in the normal position of use of the light head 50 down on the table top.
  • this "lower" lighting module 51 specifically has two LED arrangements 1, 2, each having one LED pair with two individual, series-connected LEDs (not illustrated) .
  • the one LED arrangement 1 see FIG.
  • LEDs XLamp XM-L KW-U2 which emit cold white light with a strong maximum in the blue region around 400 nm
  • these can be LEDs XLamp XM-L KW-U2 from Cree Co.
  • the other LED array 2 contains LEDs that provide more warm white light
  • these can be LEDs XLamp XM-L2 WW-T3 from Cree Co.
  • the lower light module 51 serves to uniformly illuminate the work surface.
  • a second, "upper” lighting module 52 is located on the light head 50 so that it radiates its light upwards against the ceiling or the upper part of the walls of the room in the normal position of the light head 50.
  • This light module 52 also contains a cold white LED 4 and a warm white LED array 6 and additionally an LED array 3, which predominantly emits blue light (eg, LEDs of the type Cree XP-E2 blue or Lumiled Luxeon Rebel Cyan, etc.) and an LED array 5 which emits strongly amber light (such as Luxeon Rebel PC Amber type LEDs or the like) for simulating a sky lighting scenario using a random control pattern.
  • the LED arrays are respectively soldered in the light modules 51, 52 to an LED board, for example a metal core board (not shown).
  • the lighting modules 51, 52 also each comprise a reflector arrangement, by means of which the light is emitted at a specific emission angle, and optionally (preferably at least the lower lighting module 51) a diffuser arrangement, for example here in the form of a simple Frosted glass or the like, which scatters the light emitted from the various LEDs of the LED assemblies 1, 2, 3, 4, 5, 6 light and mixes well so that a surface illuminated with it is uniformly illuminated.
  • the lighting modules 51, 52 have suitable means to provide for dissipation of the excess heat, such as cooling fins o- and the like.
  • the light 100 For controlling the LED arrays 1, 2, 3, 4, 5, 6 and for adjusting, adjusting and changing the illumination intensities (brightness) or overall powers and the color temperature of the light emitted by the light modules 51, 52 in total, the light 100 a control module 41, which is accommodated in a lower region of the lamp arm and is connected via lines to the lighting modules 51, 52. Part of this control module 41 is also an operating module 10.
  • the operating module 10 can be operated by hand by a user by touching a control surface.
  • LED lamp 100 is a relatively simple embodiment with only one light head 50.
  • the LED lamp 100 could also have several light heads or even more lighting modules, for example, as a floor lamp a double head in different directions down.
  • a radiation direction is directed as a wallwasher from a light head to the side. All lighting modules can preferably be operated either independently or in combination.
  • FIG. 2 shows a control arrangement 40 for an LED lamp 100.
  • the LED arrangements 1, 2, 3, 4, 5, 6 of the two lighting modules 51, 52 are shown symbolically with an LED.
  • the control arrangement 40 comprises a control device 41 arranged on the side of the LED light 100, for example here in the form of the control module 41, which is arranged in the lower part of the arm of the LED light 100 (see FIG. 1).
  • This Control module 41 includes, as already mentioned, an operating module 10 with a plurality of operating elements 1 1, 15, 18, here preferably in the form of capacitive acting on touch "buttons".
  • the one interface 43 is a plug interface 43, for example a USB interface 43, for connecting the mobile terminal or a USB memory or the like to the control module 51 and / or as a charging interface for charging a mobile terminal.
  • the other interface 42 is a wireless interface 42, preferably in the short-range radio range, in this case specifically a preferred Bluetooth interface 42.
  • a mobile terminal 60 with a graphical user interface 61, preferably a smartphone, can also be used via this wireless interface 42.
  • a clock with appropriate function o- the like, are coupled to the LED light 100.
  • spectral control curves STK, STK1, STK2 can be determined here and values for these spectrum control curves STK, STK1, STK2 for controlling the LED arrangements 1, 2, 3, 4, 5, 6 can be transmitted to the control module 41.
  • Another module of the control module 41 is a microcontroller 20, which controls LED current controllers 30a, 30b of the control module 41, via which in turn the LED arrangements 1, 2, 3, 4, 5, 6 of the lighting modules 51, 52 in a pulse width modulator - Onsvon be controlled or energized.
  • an LED current controller 30a for the lower light module 51 may comprise a total current control device 31a for both LED arrays 1, 2 of the light module 51, and means 32a for current selection, ie what proportion of the total current of which of the two LED arrays 1 2 is provided. Via a current switch 33a, the total current is then divided according to phases.
  • the LED current control 30b for the upper light module 52 can be correspondingly provided with a device 31b for the total current control for all LED arrays 3, 4, 5, 6 of the light module 52, a device 32b for current selection and a current switch 33b.
  • the total current and the proportion of the total current for the individual LED arrays 1, 2, 3, 4, 5, 6 are ultimately predetermined by the microcontroller 20 in the case of both light modules 51, 52.
  • the spectral control function can also specify a constant value to the microcontroller (ie a time-constant function), the value remaining valid until the user returns via a key for setting the color temperature, for example, with a specific color temperature controller 1 1 on the control module 10 or a corresponding virtual adjustment on the graphical user interface 61 of the app of the mobile terminal 60, a new value. This depends on which function the user has set.
  • the dimming d. H. Adjusting the brightness or the total power (ultimately the total current), the LED arrangements via a suitable dimming button assembly 18 (here symbolized by only a dimmer button) on the control module 10 or a corresponding functionality on the mobile device 60th
  • a suitable dimming button assembly 18 here symbolized by only a dimmer button
  • This setting of the total brightness is (except in a boost mode mentioned above, for example, when the user presses the boost key 15 on the operation module 10 and transmits a boost signal DHS to the microcontroller 20) regardless of the color temperature setting , d. H. even if the color temperature is changed, the overall performance of the LED arrays remains the same. It is only the power differently distributed to the LED assemblies, so that the currently specified color temperature is reached.
  • the microcontroller 20 also has a random number generator 22 (as a program module) to generate random values or, more precisely, pseudorandom values or quasi-random values in a correspondingly predetermined time frame, for example every 15 min.
  • a random number generator 22 (as a program module) to generate random values or, more precisely, pseudorandom values or quasi-random values in a correspondingly predetermined time frame, for example every 15 min.
  • Suitable random number generators are available to the person skilled in the art and need not be explained in detail here.
  • a random number generator requires a start value (also called seed value). This start value should preferably be chosen randomly.
  • the time at which the luminaire is switched on can be used, or a current measured value of a sensor, for example a lighting sensor in the mobile terminal 60 or the control device 41.
  • a random control pattern is generated, which is used to drive the LED arrangements 1, 2, 3, 4, 5, 6 of the lighting modules 51, 52 can be.
  • a random control pattern is used for the simulation of the sky lighting scenario only for driving the upper lighting module 52.
  • the sky lighting scenario is controlled using both a spectrum control function STK2 and a random control pattern superimposed on this spectrum control function STK2.
  • FIG. Shown here (dashed curve) is a spectrum control function STK2, which is an interpolation that traverses several interpolation points SP1, SP2, SP3, SP4 (as will be explained later).
  • Plotted here is the color temperature CT over time t.
  • the color temperature value should be lower at the beginning; H. it is more a warm white light.
  • the color temperature rises to a cool white area (after approx. 60 to 90 min.) And then drops slightly again.
  • the color temperature CT is controlled by the fact that the different colored LED arrays 3, 4, 5, 6 different current components of the light module 52 available power are assigned. In this way, the different color temperature of the light emitted by the sky is simulated. That is, the ceiling is illuminated accordingly.
  • a random control pattern is used here, which is superimposed on the control function STK2. For this purpose, a new random value is generated every 15 minutes, which determines the current color temperature at that time.
  • the random values can also be determined in advance for a longer period of time in order to be able to place an interpolation curve between the values, if desired.
  • the random number generator 22 can in particular use the mean value of the spectrum control curve STK2 and the width of the frequency distribution H with which the random values are generated can be specified.
  • FIG. 4 shows a graph with frequency distributions H for illustrative purposes. Plotted here are the frequency values HW above the color temperature CT.
  • the spectrum control curve STK2 specifies a (mean) color temperature value CT1
  • the maximum and the mean value of the frequency distribution H are at this color temperature value CT1.
  • a width of the frequency distribution b1 is then predetermined, for example.
  • the frequency distribution H for the random number generator 22 is set so that the maximum and the average value are at this color temperature value CT2.
  • the frequency distribution H can have a different width b2 at this time. However, this is not required.
  • the values generated by the random number generator 22 and the current color temperature values of the spectrum control curve STK2 are added up and used for the control. If it is ensured that the mean value of the frequency distribution is zero, the values thus generated are also on average around the spectrum control curve STK2.
  • either a control according to a spectrum control function can be provided which is always constant until the user sets a different color temperature with the aid of a controller on the operating module 10 or the app.
  • spectrum control function STK1 can be used for this second light-emitting module 51 also a, z. B. also circadian. This would then be used directly here, for example, without a change by a random control pattern, i. H. it is always exactly the currents distributed to the LED assemblies 1, 2 of the lower light module 51 so that the desired color temperature value according to the spectrum control function or spectrum control curve STK1 is achieved.
  • FIG. 2 shows only in simplified form the components essential for the invention and that the entire control arrangement 40 may also include further components, for example further mobile terminals or PCs coupled via the interfaces.
  • the control device 41 may also have other components and assemblies, such as one or more power supplies, voltage converters, optionally additional storage units, interfaces, other processors, display elements, etc.
  • FIGS. 5 and 6 Reference will now be made to FIGS. 5 and 6 as to how a circadian time-dependent spectrum control curve STK for the microcontroller 20 can be generated with the aid of a graphical user interface 61, for example by means of an app on a mobile terminal 60.
  • This circadian spectrum control curve STK can equally form both the spectrum control curve STK2 for the upper luminous module 52 for specifying the control parameter values for the random control pattern and the spectrum control function STK1 with which the current color temperature value is calculated for the lower luminous module 51.
  • an example of a spectrum control curve for the lower light module 51 is assumed.
  • An adjustment and modification of a spectrum control curve for the upper light module 52 takes place in the same way.
  • zooming with the usual gestures on the touch screen is possible (for example, pulling apart the fingers or pushing the fingers together).
  • shift keys 63 are shown here to z. B. between the operation for the lower light module 51 and the upper light module 52 to switch the app can also have more than two toggle buttons, if the app various LED lights or even more independent lighting modules are controlled with their own independent spectrum control curves should.
  • a button 64, the current window or the app can be closed. It should be noted in this context that the term "key” is to be understood as being virtual keys, so that when the screen is touched at this point, the respective function is triggered.
  • the spectrum control curve STK is defined by multiple vertices SP1, SP2, ... SP6. At each of the interpolation points SP1, SP2,... SP6 an exact color temperature value (eg the mean value or the maximum of the total spectrum of light) is stored for the relevant time.
  • These interpolation points SP1, SP2,. B. initially as mentioned above in a, preferably user-specific, start-spectrum control curve set. However, they can also be specified or changed individually by the user, as will be explained with reference to FIG. 6. In Figure 5, only six such bases are shown. It can also be used more bases to define a curve, for example, twelve or twenty-four points distributed over the day.
  • the spectrum control curve STK is then placed as - possibly in sections - interpolation function, for example as a spline, through these interpolation points.
  • the first interpolation point SP1 here is at the same time a interpolation point, with which it is specified that the illumination module 51 is switched on at this point in time. This is in the example shown in FIG. 5 at 9 o'clock in the morning.
  • the last interpolation point is accordingly also a point in time at which the light-emitting module 51 is switched off again. This is the time at 19:30.
  • the user can also change the spectrum control curve STK. Shown here is the original spectrum control curve STK as in FIG. 5 and a new spectrum control curve STK 'generated by the displacement of the support points SP2, SP3 and SP4 and removal of the fifth support point SP5.
  • the fulcrums SP1, SP2, ... SP6 can be shifted in two directions, namely, only in the color temperature direction, ie, perpendicular to the time axis, as in the fulcrums SP2, SP4. Likewise, a shift along the time axis is possible, as is the case with the third interpolation point SP3.
  • the touchscreen When touching the fulcrum (preferably, the touchscreen reacts so that the user touches the curve just below the fulcrum to not obscure the fulcrum itself), an enlarged fulcrum below it is shown, where the user can easily guide the fulcrum with his finger.
  • the current color temperature value can be displayed, as here 3200 K (thus still in the warm white area) at the base SP3.
  • the change of the spectrum control curve STK i. H. the displacement of the points SP1, SP2, ... SP6, registered and stored. This can be done both in the app, d. H. in the memory of the mobile terminal, as well as in the microcontroller 20 or in the associated memory 21 of the microcontroller 20 in the control module 41 (see FIG. 2) of the LED lamp 100 itself.
  • the spectrum control curve is run through again, for example the next day, the change in the curve introduced by the user on the previous day can be taken into account, but preferably only by a reduced part, for example by 30%.
  • the user makes the same or similar change three days in a row, this results in a changed curve in the desired form.
  • the user can of course also set a mode in which the changes are adopted immediately as a fix and not just as a change made individually for that day, which is then possibly taken into account in the learning mode.
  • the new interpolation points are transmitted via the wireless interface back to the microcontroller of the control module of the LED lamp, which then also calculates and stores the new coefficients.
  • the user can also at any time switch off a use of the spectrum control curve and proceed to keep the spectrum control function constant for the next period of time and, for.
  • the user can also at any time switch off a use of the spectrum control curve and proceed to keep the spectrum control function constant for the next period of time and, for.
  • use a simple slider to set the color temperature in which case the microcontroller will maintain this constant value.
  • the boost function and then return to the predetermined constant value according to the spectrum control function.
  • Figure 7 shows, this time in upright representation, another user interface (another window or menu) of the app for controlling the LED light on a mobile device 60.
  • another user interface another window or menu
  • the app for controlling the LED light on a mobile device 60.
  • STK control curve
  • this toolbar may be invoked by the user, with the app turned on and the spectral control curve displayed, fingering the finger over the screen from the edge, around the toolbar to "pull out" the page margin.
  • This toolbar contains on the one hand a menu button 69, with which a main menu and including other functions (or windows) can be turned on, for example, a window for calling an initialization mode to first create a customized as well as individual start spectrum control curve for the user ,
  • the toolbar also includes a boost button 65 for triggering the above-mentioned boost mode.
  • an on / off button 66 is provided here.
  • a further key 67 can be set whether the control curve STK is actually adjusted during a shift of the currently visible point on the control curve control curve or whether this should only be a short-term customization of the control curve for that one day.
  • Via a virtual dimming key 68 a virtual dimming controller 70 is opened. On this a virtual point 71 can be moved so as to vary the brightness of the LED lighting module, in parallel with the possibility of using a corresponding dimmer control in the operating module 10 to the LED light 100.
  • the said app can be downloaded to the mobile terminal 60 in the usual way, for example from the Internet.
  • it is also possible to couple the terminal 60 via the wireless interface with the LED light 100 for example, by a search mode is set in the usual way and at the same time on the LED light a search mode is set and at a Locate the devices then each a confirmation signal in the app and / or the control module of the LED light can be given to make the coupling.
  • a coupling by means of a Nahfeldkommunikations interface or the reading of a scan code to the LED light conceivable.
  • 31 a, 31 b means for total current control 32 a, 32 b means for current selection

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)

Abstract

L'invention concerne un procédé de commande d'un système d'éclairage à DEL (100), notamment d'un luminaire à DEL (100), ainsi qu'un système d'éclairage à DEL (100), notamment un luminaire à DEL (100), approprié. Ce système d'éclairage à DEL (100) comprend plusieurs systèmes de DEL (1, 2, 3, 4, 5, 6), au moins une partie de ces systèmes de DEL (1, 2, 3, 4, 5, 6) émettant, en fonctionnement, de la lumière présentant différents spectres. Les proportions de lumière émise par les systèmes de DEL (1, 2, 3, 4, 5, 6) à l'intérieur d'un spectre de lumière total des systèmes de DEL (1, 2, 3, 4, 5, 6) sont commandées selon une fonction de commande de spectre (STK, STK1, STK2) prédéfinie. Au moins une partie des systèmes de DEL (1, 2, 3, 4, 5, 6) est commandée au moyen d'un profil de commande aléatoire à l'aide de valeurs aléatoires et/ou de valeurs pseudo-aléatoires et/ou de valeurs quasi-aléatoires.
PCT/EP2015/072852 2014-10-16 2015-10-02 Procédé de commande d'un système d'éclairage à del et système d'éclairage à del WO2016058848A1 (fr)

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FR3079912B1 (fr) * 2018-04-08 2022-07-29 Lucibel Dispositif d'eclairage circadien
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