EP2346305B1 - Dimmbares Betriebsgerät mit interner Dimmkennlinie - Google Patents

Dimmbares Betriebsgerät mit interner Dimmkennlinie Download PDF

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Publication number
EP2346305B1
EP2346305B1 EP11163203.0A EP11163203A EP2346305B1 EP 2346305 B1 EP2346305 B1 EP 2346305B1 EP 11163203 A EP11163203 A EP 11163203A EP 2346305 B1 EP2346305 B1 EP 2346305B1
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EP
European Patent Office
Prior art keywords
operating device
dimming
values
control
characteristic curve
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.)
Active
Application number
EP11163203.0A
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German (de)
English (en)
French (fr)
Other versions
EP2346305A3 (de
EP2346305A2 (de
Inventor
Michael Zimmermann
Martin Hartmann
Andreas John
Falk Richter
Mathias DÜNSER
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.)
Tridonic GmbH and Co KG
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Tridonic GmbH and Co KG
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Application filed by Tridonic GmbH and Co KG filed Critical Tridonic GmbH and Co KG
Priority to PL11163203T priority Critical patent/PL2346305T3/pl
Publication of EP2346305A2 publication Critical patent/EP2346305A2/de
Publication of EP2346305A3 publication Critical patent/EP2346305A3/de
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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]
    • H05B45/10—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
    • 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
    • H05B47/18—Controlling the light source by remote control via data-bus 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
    • 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

Definitions

  • the present invention relates to a dimmable operating device for light-emitting diodes.
  • dimming values For the instruction of control commands to dimmable operating devices of a lighting system many of the lighting systems used today use an example.
  • DALI or DSI standard standardized bus system by the u.a. external dimming values can be transmitted.
  • the control units required for driving the individual lamps internally convert these values into dimming values, for example using conversion tables, which represent the actual stages of the brightness control of the connected lamps and the possibly higher-resolution control values (eg 16-bit quantized control values) than the external ones Dimming values represent.
  • An operating device with a constant current source as a driver circuit for driving a multi-LED LED module is in DE 20 2004 006 292 U1 disclosed.
  • the driver circuit is connected to the LED module via a total of three channels, two of which serve to power the LED module with a pulse width modulated in dimming power supply voltage and designed as a digital interface third channel ("module detection channel") for unidirectional or bidirectional transmission digital operating parameters and / or calibration data between the LED module and driver circuit is used, so that the driver circuit can adjust to this. This allows the operation of different types of LED modules with the same driver circuit under the same operating conditions.
  • EP 1 135 005 A2 a controllable via a digital data interface circuit for dimming light sources of a lighting system is described which has suitable means for generating a dependent of a predetermined setpoint control signal for controlling the brightness of the light sources and means for adjusting the control signal to different light source types.
  • DE 203 12 298 U1 an electronic ballast for operating a gas discharge lamp is disclosed, which comprises a memory device in which are stored by a control device retrievable operating parameters.
  • the present invention is the object of proposing a flexible design of a dimmable control device for lighting.
  • An operating device for lighting means has an interface via which external dimming values can be supplied to the operating device.
  • the operating device converts these supplied external dimming values into internal dimming values on the basis of which the connected lamps are controlled.
  • the internal dimming values are at least as high and optionally higher than the external dimming values.
  • the operating device is designed so that the conversion of the external dimming values into the internal dimming values is programmable.
  • the operating device can in particular also be designed so that the aforementioned implementation is programmable with regard to its dynamics. It can be provided that it is programmable, by which temporal transition behavior (linear, logarithmic or exponential time course, etc.) an internal dimming value assigned to an external dimming value is achieved.
  • the assignment ("mapping") of an internal dimming value to be controlled in the stationary state to an external dimming value can also be programmed.
  • the resolution of the internal dimming values need not be higher than that of the external dimming values.
  • the lighting means may be a LED module comprising a plurality of light emitting diodes, wherein the stationary assignment of an internal dimming value to an external dimming value compensates for manufacturing tolerances of the light emitting diode (s).
  • the operating device may have a flash memory in which the programmable conversion of the external dimming values is stored in internal dimming values.
  • a maximum dimming value limitation below 100% can be selectively defined, which can be selectively switched on and / or canceled by an external command.
  • the internal dimming values can be divided between the range 0% and the dimming value limitation so that there is a maximum resolution of dimming values in this range.
  • the control gear has several outputs for the control of lamps, whereby the internal dimming characteristics are individually programmable for each of these outputs.
  • the outputs control bulbs, LEDs, different colors.
  • the invention may provide for providing to the operating device value assignment tables for converting external dimming values into internal dimming values via a bus system with the aid of a communication protocol based on the DALI standard, in order to optimally trim the control unit to the light source or to adapt the shape of the dimming characteristic individually.
  • this method allows manufacturers of LED modules to take into account and compensate for device-specific tolerances of different LED modules when calibrating the dimming characteristic to a new LED module, thereby providing a simple and cost-effective way of delivering LED modules with uniform dimming behavior.
  • Fig. 1 is a schematic representation of a dimming circuit with a dimmable operating device BG sketched according to the present invention, which is used to control a light source LM with a power control variable StG ' via a power actuator TB called "drive".
  • the luminous means may be, for example, a gas discharge lamp, an LED or an LED module, consisting of an array of several light-emitting diodes LED 1 to LED N connected in series, individually or in groups in parallel.
  • the invention can be used in conjunction with any dimmable bulb.
  • the power control element TB to which a control input required for dimming the lamp LM can be fed via a control input connected to the operating device BG, can comprise, for example, a phase control dimmer, a controllable constant current source, an adjustable supply voltage, an inverter with adjustable clock frequency f T or a pulse width modulator PWM, via which the duty cycle d of a generated by the operating device BG, the lighting means LM in the form of a pulse width modulated control signal supplied periodic rectangular current is varied.
  • the frequency f LM of an alternating current required to operate the light source LM the current intensity of an alternating or direct current I LM serving to supply the light source LM, or the voltage level U LM a serving for power supply of the light source LM supply voltage can be used.
  • This in Fig. 1 shown operating device BG in this case has an interface over which the operating device BG required for dimming of the lamp LM external command variable FG (in Fig. 1 referred to as “external dimming values”) can be fed. These external dimming values are converted to internal via a data converter LMK in the operating device BG Dimming values of a control variable StG implemented on the basis of the control of the power actuator TB.
  • the operating device BG accesses, for example, a value assignment table (stored in a memory unit of the data converter LMK) Fig. 1 referred to as "adjustment table”), from which pre-stored, linear, logarithmic, exponential or otherwise interpolated intermediate values of a dimming characteristic required for dimming the luminous means LM can be taken.
  • the range of values of these support values is given e.g. is delimited by two straight lines running parallel to the time axis of a dimming level-time diagram, wherein the lower limit of the value range is formed by the current actual value of a preset dimming level and the upper limit of the value range can be predetermined by a programming signal PS supplied to the data converter LMK (or vice versa).
  • the data converter LMK calculates interpolated intermediate values for the time characteristic of the dimming characteristic curve for the abovementioned reference values and actuates the power actuator TB with the values obtained in this case.
  • the supporting values stored in the non-volatile memory of the data converter LMK can be recalibrated via the above-mentioned programming signal PS.
  • the programming signal is transmitted separately to a bus interface and / or via the same bus interface, via which, after programming, the external dimming values are transmitted to the operating device.
  • the circuit described above, as shown in FIG Fig. 1 outlines, further comprising an optional return line 1, via which the operating device BG at least one of the power of the light emitting power parameter of the light source LM is supplied as the actual value of the controlled variable RG, and another optional return line 2, via which the power control variable StG 'is supplied to the operating device BG,
  • Fig. 2a is a schematic diagram of a lighting system shown, which comprises a control device StE and a controlled via an operating device BG illuminant, which is, for example, a gas discharge lamp or, as in Fig. 2a Outlined to act as an LED module.
  • BG illuminant which is, for example, a gas discharge lamp or, as in Fig. 2a Outlined to act as an LED module.
  • the control device StE and the operating device BG are connected via digital interfaces IF 1 and IF 2 to a bus line BL, for the transmission of operating parameters and possibly also programming data between the control device StE and the operating device BG is used.
  • the power supply of the LED module via the connected to a power supply U e operating device BG.
  • a supply voltage of the LED module can serve a DC voltage, which is provided via a storage capacitor C and the bus line BL is connected via an output DC_OUT of the operating device BG as a bus voltage U bus .
  • the control device StE has not only a serving for power supply with U bus input DC_IN via a programming data output PROG_OUT, via a programming signal U prog which for setting a user definable Dimmlevels or to select a specific Dimmkennlinienverlaufs (eg linear, logarithmic, exponential etc.) can be transmitted in digitized form via the digital bus interface IF 2 of the control device StE.
  • U prog which for setting a user definable Dimmlevels or to select a specific Dimmkennlinienverlaufs (eg linear, logarithmic, exponential etc.) can be transmitted in digitized form via the digital bus interface IF 2 of the control device StE.
  • the programming signal U Prog is supplied to the operating device BG via a control signal input PROG_IN, and passed to a designated as "LED converter” data converter.
  • the latter calculates interpolated intermediate values for the course of time of a dimming characteristic curve required for dimming the LEDs and uses the values obtained to control a pulse width modulator PWM integrated in the operating device BG, via which the duty ratio d of a generated by the operating device BG LED driver circuit in the form of a pulse width modulated control signal U PWM supplied periodic rectangular current is varied.
  • the dimming characteristic runs within a limited by two parallel to the time axis of a dimming level-time line straight lines whose lower limit is formed by the current actual value of a preset dimming and its upper limit by the programming signal U prog is specified (or vice versa).
  • the interpolated intermediate values may also be obtained from e.g. in a read-only memory of the LED converter stored value assignment table, which assigns the lying within the value range support points depending on the specification of the user previously calculated, linear, logarithmic, exponential or otherwise interpolated intermediate values.
  • the support values stored in the flash EEPROM can be recalibrated via the abovementioned programming signal U Prog of the control device StE, bpsw. to minimize or compensate for manufacturer-specific tolerances of the driven by the LED driver circuit LEDs LED 1 to LED N of the LED module.
  • the aforementioned basic values are read out of the flash EEPROM and switched to a data transmission channel of the bus line BL via a data output READ_OUT of the operating device BG and its digital bus interface IF 1 , so that they are sent to the control device StE via their digital Bus interface IF 2 and a data input READ_IN are accessible.
  • Fig. 2b is a circuit variant of the in Fig. 2a sketched lighting system with a brightness control circuit LRK for automatic adjustment of a definable via the output voltage U setpoint of a setpoint generator SWG dimming levels.
  • the controlled system of this brightness control loop LRK is taking on by the reference Fig. 2a described, via the digital bus interface IF 1 connected to the bus line BL operating device BG and a controlled via the operating device BG bulb formed, which in turn, for example, a gas discharge lamp or, as in Fig. 2b sketched to an LED module, consisting of an array of several series-connected LEDs LED 1 to LED N , is, which is controlled via a connected to the output of the operating device BG LED driver circuit.
  • a manipulated variable U prog is required, which of a Programming data output PROG_OUT a connected via a digital bus interface IF 2 (eg a DALI interface) to the bus line BL digital control and RSE delivered in digital form via their digital bus interface IF 2 switched to a data transmission channel of the bus line BL and then to the digital Bus interface IF 1 of the operating device BG is transmitted to the programming data input PROG_IN.
  • a digital bus interface IF 2 eg a DALI interface
  • the control and regulating device RSE is a sensor data input DATA_IN on by a controlled variable U Reg reproduced measured value supplied, which is, for example, the current actual value of one of the light emitting diodes LED 1 to LED N of the LED module or a subset of these LEDs illuminated effective area A caused by the incident luminous flux ⁇ LM Illuminance E , the of a light-sensitive detector of a via a further digital bus interface IF 3 (eg a DALI interface) also connected to the bus line BL light sensor module LSM is detected.
  • a controlled variable U Reg reproduced measured value supplied which is, for example, the current actual value of one of the light emitting diodes LED 1 to LED N of the LED module or a subset of these LEDs illuminated effective area A caused by the incident luminous flux ⁇ LM Illuminance E , the of a light-sensitive detector of a via a further digital bus interface IF 3 (eg a DALI interface) also connected to the bus line BL light sensor module LSM
  • a phototransistor T Ph whose collector current (photocurrent) is proportional to the illuminance E caused by the emitted light radiation of the LEDs on the aforementioned effective area A and thus provides a measure of the brightness of this radiation, acts as the light sensor.
  • the power supply of the light sensor module LSM takes place here as well as the power supply of the control and RSE and the LED module via the serving as bus voltage U bus DC link voltage U v of the operating device BG, the two first-mentioned system components each have a designated "DC_IN" bus voltage input is supplied.
  • the output signal U Reg of the light sensor module LSM which is, for example, a voltage proportional to the photocurrent amplified by a measuring amplifier, is fed via a sensor data output DATA_OUT to the digital bus interface IF 3 of the light sensor module LSM and transmitted in digitized form via the bus line BL and the digital bus interface IF 2 of the control and regulating device RSE to the sensor data input DATA_IN.
  • the control and regulating device RSE provides then dependent on the voltage applied to the aforementioned sensor data input DATA_IN control variable U Reg and with the help of the setpoint generator SWG via a trim resistor R v or a potentiometer adjustable and predetermined via another data input of the control and RSE command variable U target (setpoint) for in Dimming operation of the LED module to be generated radiation power, expressed by the setpoint ⁇ LM , is to be emitted by the LED module in the dimming mode luminous flux ⁇ LM , the above-mentioned manipulated variable U prog .
  • Upon detection of a control deviation between the reference variable U soll and control value U Reg generates an appropriate control variable U Prog through which the aforesaid deviation is at least approximately compensated.
  • a dimming characteristic curve (eg linear, logarithmic, exponential, etc.) predefinable by the user can be selected from a menu displayed via an integrated display of the control device StE.
  • the control signal required for this purpose is connected in digitized form via the digital bus interface IF 2 of the control device StE to a further data transmission channel of the bus line BL. After transmission via the bus line BL, the control signal is supplied to the operating device BG via the aforementioned programming signal input PROG_IN and directed to the LED converter.
  • the interpolated intermediate values can alternatively be taken from an example in a read-only memory of the LED converter value assignment table, which calculated the lying within the value range support points depending on the user's specification in advance, linear, logarithmic, exponential or otherwise assigns interpolated intermediate values.
  • the stored in the flash EEPROM support values can be recalibrated via the control signal of the control and RSE device to manufacturer-specific tolerances of the operating device BG, the LED driver circuit and / or by the LED driver circuit controlled LEDs of the LED module to minimize or compensate.
  • the aforementioned support values are read from the flash EEPROM and connected via a data output READ_OUT the operating device BG and its digital bus interface IF 1 to a data transmission channel of the bus line BL, so that they Control and RSE device via the digital bus interface IF 2 and a data input READ_IN are accessible.
  • the present invention is not limited to lighting systems whose system components are connected via a DALI interface to a serving for power supply channel of a bus line, but that according to the invention any other suitable for transmitting digital control signals digital bus interface for this purpose can be used.
  • the illuminant used is one or more LEDs
  • the free programmability of the internal dimming characteristic can be used to match the color-specific sensitivity of the human eye. This is of particular importance when LEDs of different colors are driven in independent channels of an operating device or by several operating devices, since the human eye perceives the different colors (eg red, green, blue) differently.
  • the internal dimming characteristic for driving LEDs (or other colored lamps) of different colors can be individual and thus differently programmable.
  • RGB color mixing module for LEDs or fluorescent lamps.
  • the assignment of the colors and the individual adaptation of the internal dimming characteristic for each color can then only be done in the luminaire during the installation.
  • an artificial maximum value for a performance parameter or combinations of performance parameters are set.
  • This restriction can then be reversed from the outside and / or changed, so that, for example, later, the actually available maximum power can be released again.
  • this artificial "throttling" can also be achieved by a manual setting on the ballast.
  • the internal dimming curve can be adapted to the artificially limited maximum value: In order to continue to use finely distributed internal dimming values, all internally available dimming values are distributed to the range between 0% dimming and the artificial maximum value when the maximum value limit is set.
  • a simple embodiment may provide for programming in advance at least two characteristic curves for mapping the external dimming values to the internal dimming values, namely, for example, a division between 0% and 100% and a further division between 0% and the maximum value limitation.

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  • Circuit Arrangement For Electric Light Sources In General (AREA)
EP11163203.0A 2006-06-22 2007-06-13 Dimmbares Betriebsgerät mit interner Dimmkennlinie Active EP2346305B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL11163203T PL2346305T3 (pl) 2006-06-22 2007-06-13 Ściemniane urządzenie robocze z wewnętrzną charakterystyką ściemniania

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102006028670.7A DE102006028670B4 (de) 2006-06-22 2006-06-22 Dimmbares Betriebsgerät mit interner Dimmkennlinie, Verfahren zur Kompensation von Toleranzen von durch ein Betriebsgerät angesteuerten Leuchtdioden und Verfahren zur Konfiguration eines Betriebsgeräts für Leuchtmittel
EP07764640.4A EP2030484B2 (de) 2006-06-22 2007-06-13 Dimmbares betriebsgerät mit interner dimmkennlinie
PCT/EP2007/005216 WO2007147512A1 (de) 2006-06-22 2007-06-13 Dimmbares betriebsgerät mit interner dimmkennlinie

Related Parent Applications (3)

Application Number Title Priority Date Filing Date
EP07764640.4 Division 2007-06-13
EP07764640.4A Division-Into EP2030484B2 (de) 2006-06-22 2007-06-13 Dimmbares betriebsgerät mit interner dimmkennlinie
EP07764640.4A Division EP2030484B2 (de) 2006-06-22 2007-06-13 Dimmbares betriebsgerät mit interner dimmkennlinie

Publications (3)

Publication Number Publication Date
EP2346305A2 EP2346305A2 (de) 2011-07-20
EP2346305A3 EP2346305A3 (de) 2012-06-06
EP2346305B1 true EP2346305B1 (de) 2018-09-26

Family

ID=37607150

Family Applications (3)

Application Number Title Priority Date Filing Date
EP14164929.3A Active EP2765835B1 (de) 2006-06-22 2007-06-13 Dimmbares Betriebsgerät mit interner Dimmkennlinie
EP07764640.4A Active EP2030484B2 (de) 2006-06-22 2007-06-13 Dimmbares betriebsgerät mit interner dimmkennlinie
EP11163203.0A Active EP2346305B1 (de) 2006-06-22 2007-06-13 Dimmbares Betriebsgerät mit interner Dimmkennlinie

Family Applications Before (2)

Application Number Title Priority Date Filing Date
EP14164929.3A Active EP2765835B1 (de) 2006-06-22 2007-06-13 Dimmbares Betriebsgerät mit interner Dimmkennlinie
EP07764640.4A Active EP2030484B2 (de) 2006-06-22 2007-06-13 Dimmbares betriebsgerät mit interner dimmkennlinie

Country Status (6)

Country Link
US (1) US8111010B2 (pl)
EP (3) EP2765835B1 (pl)
CN (2) CN101473701B (pl)
DE (2) DE102006028670B4 (pl)
PL (3) PL2346305T3 (pl)
WO (1) WO2007147512A1 (pl)

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DE102021122749A1 (de) 2021-09-02 2023-03-02 Schneider Electric Industries Sas Verfahren und vorrichtung zum dimmen eines leuchtmittels

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PL2346305T3 (pl) 2019-03-29
EP2030484B2 (de) 2022-06-22
EP2765835B1 (de) 2017-09-13
WO2007147512A1 (de) 2007-12-27
US8111010B2 (en) 2012-02-07
DE102006028670B4 (de) 2018-10-25
PL2030484T5 (pl) 2023-02-20
EP2030484A1 (de) 2009-03-04
EP2346305A3 (de) 2012-06-06
EP2765835A1 (de) 2014-08-13
CN103561505A (zh) 2014-02-05
CN101473701A (zh) 2009-07-01
PL2765835T3 (pl) 2018-06-29
PL2030484T3 (pl) 2016-06-30
DE102006028670A1 (de) 2007-12-27
US20090167207A1 (en) 2009-07-02
EP2346305A2 (de) 2011-07-20
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DE202007019402U1 (de) 2012-04-19
CN103561505B (zh) 2016-06-22

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