EP1202613B1 - Dispositif pour au moins une lampe avec éntrée de commande et mode d'emploi pour des lampes électriques utilisant un tel dispositif - Google Patents

Dispositif pour au moins une lampe avec éntrée de commande et mode d'emploi pour des lampes électriques utilisant un tel dispositif Download PDF

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Publication number
EP1202613B1
EP1202613B1 EP01123437A EP01123437A EP1202613B1 EP 1202613 B1 EP1202613 B1 EP 1202613B1 EP 01123437 A EP01123437 A EP 01123437A EP 01123437 A EP01123437 A EP 01123437A EP 1202613 B1 EP1202613 B1 EP 1202613B1
Authority
EP
European Patent Office
Prior art keywords
voltage
transformer
sample
control input
electric
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.)
Expired - Lifetime
Application number
EP01123437A
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German (de)
English (en)
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EP1202613A2 (fr
EP1202613A3 (fr
Inventor
Andreas Huber
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
Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
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.)
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Publication of EP1202613A2 publication Critical patent/EP1202613A2/fr
Publication of EP1202613A3 publication Critical patent/EP1202613A3/fr
Application granted granted Critical
Publication of EP1202613B1 publication Critical patent/EP1202613B1/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
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14—Circuit arrangements
    • H05B41/36—Controlling
    • H05B41/38—Controlling the intensity of light
    • H05B41/39—Controlling the intensity of light continuously
    • H05B41/392—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor
    • H05B41/3921—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor with possibility of light intensity variations

Definitions

  • the invention relates to an operating device for operating at least one electric lamp according to the preamble of patent claim 1 and an operating method for at least one electric lamp according to the preamble of patent claim 7.
  • dimmable electronic ballasts are available for the operation of electric lamps, which enable a dimming operation, that is, a brightness control of the lamps connected thereto, in particular fluorescent lamps or halogen incandescent lamps.
  • These dimmable operating devices have a control input, which can be acted upon by a voltage serving as a setpoint for the brightness control.
  • the control input is designed as a 1-10V interface.
  • a dimming potentiometer is connected to this control input in order to set the brightness of the lamps operated on the operating device to the desired value.
  • a voltage between 1V and 10V is generated at the control input, which represents the desired value for the desired brightness setting.
  • this voltage is transmitted to an evaluation device in the operating device.
  • the transformer also provides a galvanic isolation between the control input and the evaluation device in the operating device.
  • the evaluation device generates with the aid of a peak value rectifier a signal corresponding to the setting on the dimming potentiometer for controlling the lamp current or the power consumption of the lamp or for controlling the output power of the operating device.
  • the properties of the transformer exert a great influence on the voltage transmitted to the evaluation device.
  • a high stray inductance of the transformer causes disturbing voltage pulses on the transmitted voltage, which are interpreted by the evaluation device as a control variable. Therefore, so far specially trained toroidal transformers have been used, which had a low leakage inductance, and also the evaluation device was preceded by a low-pass filter in the operating device for reducing voltage spikes.
  • U.S. Patent US-A-6 127 788 shows a circuit having a sample and hold circuit for suppressing voltage spikes.
  • the operating device for operating at least one electric lamp has a control input, which can be acted upon by a voltage serving as a setpoint for the control of an operating parameter of the at least one electric lamp and has a transformer, which impressed for the transmission of the control input, as a setpoint for the Controlling an operating parameter of the at least one electric lamp serving electrical voltage to an evaluation device is provided, and an oscillator for exciting the transformer with a temporally periodically changing electrical Tension.
  • the evaluation device has a sample-and-hold member.
  • means for equalizing the frequencies of the sequence signal of the sample-and-hold member and the time-periodically changing electrical voltage and for producing a temporally constant phase shift between the sequence signal of the sample-and-hold member and the temporally periodically changing electrical Voltage provided to block voltage spikes on the voltage transmitted by the transformer.
  • the sample-and-hold element is advantageously designed as part of an analog-to-digital converter in order to generate a digital control signal for a microcontroller or an integrated circuit, which serves to regulate the operating device.
  • the serving as a transformer transformer advantageously has a first winding, which is connected to the control input, and at least one second winding, which is connected to the evaluation device and is magnetically coupled to the at least one first winding. This ensures galvanic isolation between the control input and the evaluation device.
  • an AND gate is used as an apparatus for frequency equalization of the sequence signal to the temporally periodically changing electrical voltage and for producing the constant time shift.
  • an AND gate is used as an apparatus for frequency equalization of the sequence signal to the temporally periodically changing electrical voltage and for producing the constant time shift.
  • the output voltage of the sample-and-hold element is advantageously used to control the operating parameter of the at least one electric lamp or previously converted by means of an analog-to-digital converter into a digital signal.
  • the operating device has two mains voltage connections 1, 2 and a downstream DC voltage supply 3 for a half-bridge inverter 4.
  • the DC voltage supply 3 usually contains a radio interference filter and a rectifier for the AC line voltage. In addition, it may also have a harmonic filter to ensure the most sinusoidal power drain.
  • the half-bridge inverter 4 comprises two alternating-switching transistors 5, 6, two coupling capacitors 7, 8 and designed as a series resonant half bridge branch, which contains the choke 9, the capacitor 10 and the fluorescent lamp 11, wherein the discharge path of the fluorescent lamp 11 is connected in parallel to the capacitor 10 ,
  • the half-bridge inverter need not necessarily be formed as a symmetrical half-bridge inverter 4 with two coupling capacitors 7, 8, but may instead have only one coupling capacitor and thus be designed as a single-ended half-bridge inverter.
  • the transistors 5, 6 of the half-bridge inverter 4, which are preferably field-effect transistors, are controlled by a microcontroller 12.
  • the microcontroller 12 generates pulse width modulated signals which determine the switching clock of the transistors 5, 6 and thereby enable a power control or brightness control of the fluorescent lamp 11.
  • the pulse width modulated signals for the transistors 5, 6 are generated by the microcontroller 12 in response to the voltage applied to the terminals 13, 14 of the control input DC voltage.
  • the control input 13, 14 can be impressed with a DC voltage with values between 1 V and 10 V. By the value of the control input 13, 14 impressed DC voltage, a desired value for the desired power or brightness of the fluorescent lamp 11 is determined.
  • a dimming potentiometer (not shown), which is connected to the terminals 13, 14, serves to generate and specify a value of this DC voltage.
  • the voltage impressed on the control input 13, 14 is transmitted to an evaluation device 16.
  • the primary winding 15a of the transformer 15 is connected via a rectifier diode 17 to the control input 13, 14, while the secondary winding 15b is connected to the voltage input of the evaluation device 16.
  • substantially rectangular voltage is generated by means of an oscillator 19 and a frequency divider 21 and applied via a voltage divider resistor 20 to the secondary winding 15b.
  • the evaluation device 16 therefore detects at its connected to the secondary winding 15b voltage input, a substantially rectangular voltage whose amplitude determined by the control input 13, 14 impressed DC voltage is.
  • the evaluation device 16 provides at its connected to the microcontroller 12 voltage output, a corresponding signal for the microcontroller 12 for power or brightness control of the fluorescent lamp 11 ready.
  • the evaluation device 16 has a sample-and-hold element 22, which is formed as part of an analog-to-digital converter 23, and an AND gate 24. With the aid of the sample-and-hold element 22 and the AND gate 24, the voltage peaks caused by the stray inductance of the transformer 15 are masked out on the rising edge of the rectangular voltage of the secondary winding 15b. Below, this fact will be explained in more detail with reference to FIG 2.
  • the curve A in FIG. 2 shows the time profile of the rectangular voltage U which is used to excite the transformer 15.
  • This rectangular voltage is generated by means of the oscillator 19 and the frequency divider 21, which causes a frequency bisection, and applied via the resistor 20 to the secondary winding 15b.
  • this time-periodically changing, exciting voltage is required in order to enable transmission of the DC voltage impressed to the control input 13, 14 by the transformer 15.
  • Curve B in FIG. 2 shows the time profile of the voltage U applied to the secondary winding 15b and detected by the voltage input of the evaluation circuit 16.
  • This voltage applied to the secondary winding 15b has the periodicity of the exciting voltage (curve A).
  • Their amplitude - that is, the height of the rectangular pulses - but is determined by the value of the control input 13, 14 impressed DC voltage.
  • the rising edge and the falling edge of the square-wave voltage at the secondary winding 15b (curve B) are superposed by disturbing voltage pulses due to the stray inductance of the transfomator 15.
  • the sample-and-hold member 22 With the help of the sample-and-hold member 22, the disturbing voltage pulses are hidden.
  • the duration and the beginning of the sequence signal (also called sample signal) of the sample-and-hold element 22 are adapted to the voltage at the secondary winding 15b.
  • the curve C in Figure 2 shows the time course of the sequence signal of the sample-and-hold element 22.
  • the duration of the sequence signal (curve C) is exactly half as long as a rectangular pulse of the voltage (curve B) at the secondary winding 15b and the sequence signal is synchronous with the second half of the rectangular pulses of the voltage across the secondary winding 15b.
  • This tuning of the sequence signal to the voltage at the secondary winding 15b is performed by means of the JK flip-flop formed frequency divider 21, the AND gate 24 and the oscillator 19.
  • the oscillator 19 generates both the voltage exciting the transformer 15 (curve A) and the sequence signal (curve C).
  • the square-wave voltage generated by the oscillator 19 is supplied on the one hand to the first voltage input of the AND gate 24 and on the other hand fed to the voltage input of the frequency divider 21, which causes a frequency bisection of the square-wave voltage supplied to it.
  • the frequency-divided rectangular voltage applied to the voltage output of the frequency divider 21 is, on the one hand, supplied to the second voltage input of the AND gate 24 and, on the other hand, applied to the secondary winding 15b via the voltage divider resistor 20 in order to excite the transformer 15.
  • the output voltage of the AND gate 24 is supplied to the sample-and-hold element 22 as a sequence signal (curve C) or is used to control the sequence and hold signal (also called Sample & Hold signal) of the sample and hold -Gliedes 22 used.
  • the sequence signal of the sample-and-hold element 22 (curve C) is therefore synchronous with the second half of the rectangular pulse of the exciting voltage (curve A) and thus also synchronously with the second half of the voltage pulse of the voltage applied to the secondary winding 15b (curve B).
  • the curve D in FIG. 2 shows the time profile of the output voltage U of the sample-and-hold element 22, which is converted by the analog-to-digital converter 23 into a digital signal for the microcontroller 12 for the pulse-width-modulated control of the transistors 5, 6.
  • the output voltage of the sample-and-hold element 22 is a DC voltage whose value depends only on the DC input voltage impressed on the control input 13, 14. Due to the losses in the sample-and-hold member 22, the output voltage of the sample-and-hold member 22 (curve D) has a ribbed structure.
  • the oscillator 19 is identical to the half-bridge inverter 4 in the preferred embodiment.
  • the square-wave voltage (curve A) and the sequence signal (curve C) of the sample-and-hold element 22 are triggered by capacitive coupling at the center tap between the half-bridge inverter transistors 5, 6 or or at the center tap between the coupling capacitors 7, 8 generates.
  • the sample-and-hold element 22, the analog-to-digital converter 23 and the AND gate 24 are preferably formed as part of the microcontroller 12.
  • control input (13, 14) need not necessarily be designed as an analog control input, which can be acted upon by a DC voltage.
  • control input can also be designed as a digital control input, which can be acted upon by digital signals for specifying a desired value for the brightness control of the at least one lamp.

Landscapes

  • Circuit Arrangements For Discharge Lamps (AREA)
  • Discharge-Lamp Control Circuits And Pulse- Feed Circuits (AREA)
  • Analogue/Digital Conversion (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)

Claims (10)

  1. Dispositif pour faire fonctionner au moins une lampe électrique, le dispositif
    - ayant une entrée (13, 14) de commande qui peut être alimentée en une tension électrique servant de valeur de consigne pour la commande d'un paramètre de fonctionnement de la au moins une lampe (11) électrique ;
    - comprenant un transformateur (15) qui est prévu pour la transmission à un dispositif (16) d'évaluation de la tension électrique appliquée à l'entrée (13, 14) de commande et servant de valeur de consigne pour la commande d'un paramètre de fonctionnement de la au moins une lampe (11) électrique ;
    - comprenant un oscillateur (19) d'excitation du transformateur (15) par une tension électrique se modifiant périodiquement dans le temps ;
    caractérisé en ce que le dispositif (16) d'exploitation comprend un élément (22) d'échantillonnage et de maintien et il est prévu des moyens (19, 21, 24) pour égaliser les fréquences du signal de répétition de l'élément (22) d'échantillonnage et de maintien et la tension électrique qui se modifie périodiquement dans le temps ainsi que pour produire un déphasage constant dans le temps entre le signal de répétition de l'élément (22) d'échantillonnage et de maintien et de la tension électrique qui se modifie périodiquement dans le temps pour supprimer des pointes de la tension transmise par le transformateur (15), ces moyens comprenant l'oscillateur (19) de production du signal de répétition de l'élément (22) d'échantillonnage et de maintien et un diviseur (21) de fréquence pour diviser par deux la fréquence de la tension électrique se modifiant périodiquement dans le temps ainsi qu'un dispositif (24) d'égalisation de fréquence du signal de répétition sur la tension se modifiant périodiquement dans le temps et de production du décalage constant dans le temps.
  2. Dispositif suivant la revendication 1, caractérisé en ce que le transformateur (15) a au moins un premier enroulement (15a) qui est relié à l'entrée (13, 14) de commande et au moins un deuxième enroulement (15b) qui est relié au dispositif (16) d'exploitation et qui est couplé magnétiquement à le au moins un premier enroulement (15a).
  3. Dispositif suivant la revendication 1, caractérisé en ce que le dispositif (16) d'exploitation à un convertisseur (23) analogique numérique et l'élément (22) d'échantillonnage et de maintien fait partie du convertisseur (23) analogique numérique.
  4. Dispositif suivant la revendication 1, caractérisé en ce que l'entrée (13, 14) de commande est constituée sous la forme d'une entrée de commande analogique à laquelle peut être appliquée une tension continue.
  5. Dispositif suivant la revendication 1, caractérisé en ce que l'entrée de commande est constituée sous la forme d'une entrée de commande numérique, qui peut être alimentée en signaux numériques.
  6. Procédé pour faire fonctionner au moins une lampe électrique sur un appareil pour faire fonctionner des lampes électriques qui a une entrée (13, 14) de commande pour prescrire une tension électrique servant de valeur de consigne pour la commande d'un paramètre de fonctionnement de la au moins une lampe (11) électrique, dans lequel
    - on envoie la tension électrique appliquée à l'entrée (13, 14) de commande à un transformateur (15) auquel est appliquée une tension se modifiant périodiquement dans le temps ; et
    - on exploite la tension sur le transformateur (15) pour produire un signal de commande du paramètre de fonctionnement de la au moins une lampe (11) électrique,
    caractérisé en ce que l'on envoie la tension sur le transformateur (15) pour l'exploitation à un élément (22) d'échantillonnage et de maintien pour supprimer des pointes de la tension du transformateur (15) à l'aide de l'élément (22) d'échantillonnage et de maintien en effectuant pour l'évaluation de la tension sur le transformateur (15) des stades de procédés suivants:
    - on produit le signal de répétition de l'élément (22) d'échantillonnage et de maintien et la tension électrique se modifiant périodiquement dans le temps au moyen d'un oscillateur (19) ;
    - on divise par deux la fréquence de la tension électrique se modifiant périodiquement dans le temps au moyen d'un diviseur (21) de fréquence ;
    - on adapte la fréquence du signal de répétition à la fréquence de la tension électrique se modifiant périodiquement dans le temps et on produit un décalage constant dans le temps entre le signal de répétition et la tension électrique se modifiant périodiquement dans le temps ;
    - on applique au transformateur (15) la tension électrique se modifiant périodiquement dans le temps ; et
    - on applique la tension sur le transformateur (15) en tant que tension d'entrée à l'élément (22) d'échantillonnage et de maintien.
  7. Procédé suivant la revendication 6, caractérisé en ce que l'on applique la tension de l'élément (22) d'échantillonnage et de maintien à un convertisseur (23) analogique numérique.
  8. Procédé suivant la revendication 6, caractérisé en ce que l'on utilise la tension de sortie de l'élément (22) d'échantillonnage et maintien pour commander le paramètre de fonctionnement de la au moins une lampe (11) électrique.
  9. Procédé suivant la revendication 6, caractérisé en ce que la tension appliquée à l'entrée (13, 14) de commande est une tension continue.
  10. Procédé suivant la revendication 6, caractérisé en ce que l'on envoie des signaux de tension numériques à l'entrée de commande pour prescrire une valeur de consigne pour la commande d'un paramètre de fonctionnement de la au moins une lampe électrique.
EP01123437A 2000-10-27 2001-09-28 Dispositif pour au moins une lampe avec éntrée de commande et mode d'emploi pour des lampes électriques utilisant un tel dispositif Expired - Lifetime EP1202613B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10053590 2000-10-27
DE10053590A DE10053590A1 (de) 2000-10-27 2000-10-27 Betriebsgerät für mindestens eine elektrische Lampe mit Steuereingang und Betriebsverfahren für elektrische Lampen an einem derartigen Betriebsgerät

Publications (3)

Publication Number Publication Date
EP1202613A2 EP1202613A2 (fr) 2002-05-02
EP1202613A3 EP1202613A3 (fr) 2004-10-20
EP1202613B1 true EP1202613B1 (fr) 2007-03-21

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP01123437A Expired - Lifetime EP1202613B1 (fr) 2000-10-27 2001-09-28 Dispositif pour au moins une lampe avec éntrée de commande et mode d'emploi pour des lampes électriques utilisant un tel dispositif

Country Status (6)

Country Link
US (1) US6590351B2 (fr)
EP (1) EP1202613B1 (fr)
AT (1) ATE357837T1 (fr)
CA (1) CA2360200A1 (fr)
DE (2) DE10053590A1 (fr)
TW (1) TWI243630B (fr)

Cited By (1)

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DE202015103737U1 (de) 2015-07-16 2016-10-18 Tridonic Gmbh & Co Kg System und Betriebsgerät für einen Aktor

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US7592753B2 (en) * 1999-06-21 2009-09-22 Access Business Group International Llc Inductively-powered gas discharge lamp circuit
WO2003039206A1 (fr) * 2001-10-31 2003-05-08 Koninklijke Philips Electronics N.V. Circuit de protection
DE102004018371A1 (de) * 2004-04-13 2005-11-03 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Elektronisches Vorschaltgerät mit digitaler Steuerung von Dimmvorgängen
DE102004037388B4 (de) * 2004-08-02 2008-05-29 Infineon Technologies Ag Verfahren zur Detektion eines Nicht-Nullspannungsschaltbetriebs eines Vorschaltgeräts für Leuchtstofflampen und Vorschaltgerät
WO2007019066A2 (fr) * 2005-08-04 2007-02-15 Mau-Chung Frank Chang Structures differentielles a coherence de phase
US7821208B2 (en) * 2007-01-08 2010-10-26 Access Business Group International Llc Inductively-powered gas discharge lamp circuit
EP2124510B1 (fr) * 2008-05-16 2013-01-02 Infineon Technologies Austria AG Procédé de commande d'une lampe fluorescente et appareil de montage de lampes

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CH559916A5 (fr) * 1973-06-21 1975-03-14 Hug Interlizenz Ag
US4700113A (en) * 1981-12-28 1987-10-13 North American Philips Corporation Variable high frequency ballast circuit
US6127788A (en) * 1997-05-15 2000-10-03 Denso Corporation High voltage discharge lamp device
JP2000166257A (ja) * 1998-09-21 2000-06-16 Murata Mfg Co Ltd 圧電トランスインバ―タ
US6153962A (en) * 1998-09-21 2000-11-28 Murata Manufacturing Co., Ltd. Piezoelectric transformer inverter
US5969482A (en) * 1998-11-30 1999-10-19 Philips Electronics North America Corporation Circuit arrangement for operating a discharge lamp including real power sensing using a single quadrant multiplier
US6137240A (en) * 1998-12-31 2000-10-24 Lumion Corporation Universal ballast control circuit

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202015103737U1 (de) 2015-07-16 2016-10-18 Tridonic Gmbh & Co Kg System und Betriebsgerät für einen Aktor
EP3119166A1 (fr) 2015-07-16 2017-01-18 Tridonic GmbH & Co KG Systeme et appareil de commande d'actionneur

Also Published As

Publication number Publication date
TWI243630B (en) 2005-11-11
CA2360200A1 (fr) 2002-04-27
US20020050796A1 (en) 2002-05-02
DE50112223D1 (de) 2007-05-03
ATE357837T1 (de) 2007-04-15
EP1202613A2 (fr) 2002-05-02
US6590351B2 (en) 2003-07-08
DE10053590A1 (de) 2002-05-02
EP1202613A3 (fr) 2004-10-20

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