EP2796011B1 - Procédé permettant de faire fonctionner un moyen d'éclairage - Google Patents

Procédé permettant de faire fonctionner un moyen d'éclairage Download PDF

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Publication number
EP2796011B1
EP2796011B1 EP12818498.3A EP12818498A EP2796011B1 EP 2796011 B1 EP2796011 B1 EP 2796011B1 EP 12818498 A EP12818498 A EP 12818498A EP 2796011 B1 EP2796011 B1 EP 2796011B1
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EP
European Patent Office
Prior art keywords
control unit
signal
switch
connection
light means
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
EP12818498.3A
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German (de)
English (en)
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EP2796011A2 (fr
Inventor
Hans Auer
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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Publication of EP2796011A2 publication Critical patent/EP2796011A2/fr
Application granted granted Critical
Publication of EP2796011B1 publication Critical patent/EP2796011B1/fr
Active legal-status Critical Current
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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
    • H05B41/26—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
    • H05B41/28—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters
    • H05B41/295—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices and specially adapted for lamps with preheating electrodes, e.g. for fluorescent lamps
    • 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
    • H05B41/26—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
    • H05B41/28—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters
    • H05B41/295—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices and specially adapted for lamps with preheating electrodes, e.g. for fluorescent lamps
    • H05B41/298—Arrangements for protecting lamps or circuits against abnormal operating conditions
    • H05B41/2981—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions
    • H05B41/2985—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions against abnormal lamp operating conditions

Definitions

  • the present invention relates to the operation of bulbs.
  • a control unit Usually, the operation of light sources, in particular gas discharge lamps, is taken over by a control unit.
  • a control unit has different terminals which are each designed to output control signals or to receive measurement signals or other feedback signals.
  • a control circuit for a ballast for fluorescent lamps is known.
  • a first aspect of the invention relates to a method for operating at least one luminous means, such as a gas discharge lamp, starting from a clocked switching regulator circuit, which is preferably designed as an inverter.
  • a switch of the switching regulator circuit is controlled by a control signal.
  • the control signal is received from a control unit at a terminal of the control unit provided.
  • the terminal is supplied with a measurement signal which represents an electrical parameter with respect to the operation of the luminous means. From the measurement signal, which is received by the control unit at the terminal, the type of the used light source is determined and adjusted according to at least one adapted to the type of lamp operating parameters.
  • the terminal In periods when the switch is not driven by the control unit, the terminal is used for receiving signals by the control unit. In other words, the control unit is then in a receive mode.
  • the number of terminals of the control unit can be reduced.
  • Another aspect relates to a control circuit or control unit, in particular ASIC or microcontroller, which is designed for such a method.
  • Another aspect relates to an operating device for lighting means, in particular for gas discharge lamps, having such a control circuit or control unit or which is designed for such a method.
  • Another aspect of the invention relates to an operating circuit, in particular electronic ballast, for operating at least one light source, starting from a preferably designed as an inverter clocked switching regulator circuit.
  • the operating circuit is designed so that a switch of the switching regulator circuit is driven by a control signal, wherein the control signal from a control unit to a Connection of the control unit is provided.
  • the operating circuit is designed in such a way that during periods in which the switch is not actuated by the control unit, the terminal is used for receiving signals by the control unit.
  • the terminal is supplied with a measurement signal which represents an electrical parameter with respect to the operation of the luminous means. From the measurement signal, which is received by the control unit at the terminal, the type of the used light source is determined and adjusted according to at least one adapted to the type of lamp operating parameters.
  • the fault condition may be a spiral break or a non-insertion of the lamp or a lack of coupling of the lamp with the switching regulator circuit.
  • connection can be connected to the light source via a DC path. Respectively. the connection can be connected to a DC path formed by the luminous means.
  • the DC path can be connected to the potential higher coil and / or to the potential-low coil of the lamp.
  • a voltage preferably DC voltage, can be applied to the DC path.
  • the voltage applied to the DC path may be different than an input voltage of the switching regulator circuit.
  • the voltage applied to the DC path may be an internal voltage or current of the control unit.
  • a change in the level of the signal or measurement signal received at the terminal can be detected by the control unit.
  • appropriate measures for the operation of the lamp can be made.
  • the level of the signal or measurement signal received at the terminal can be compared by the control unit with a threshold value. Corresponding measures can preferably be taken for the operation of the lamp.
  • connection can only be released for receiving signals when the switching regulator circuit is not clocked or not operated.
  • the switching regulator circuit may have a potential-selective switch, which is electrically isolated from the control unit, and a preferably lower-potential switch.
  • the terminal for receiving signals can be used to drive the switch isolated from the control unit.
  • the switching regulator circuit may comprise a switch which is higher in potential by the control unit and a potential-lower switch connected to ground.
  • the terminal for receiving signals may be used to drive the higher-potential switch.
  • FIG. 1 a schematic representation of an embodiment of the invention.
  • Fig. 1 an embodiment of a lighting system 1 according to the present invention is shown.
  • the lighting system 1 comprises in preferably dimmable operating device for lighting means.
  • Suitable lamps include, for example, gas discharge lamps, in particular fluorescent lamps in question.
  • the lighting system 1 is powered by a first voltage Vbus.
  • This first voltage is e.g. a DC or DC voltage.
  • a DC voltage can be provided as a bus voltage or DC link voltage.
  • on the input side e.g. an AC power supply voltage from an AC-DC converter (not shown) rectified.
  • this rectified AC voltage is adjusted by a preferably by means of a switch actively clocked PFC (Power Factor Correction) circuit (not shown) to a suitable for the operation of the illuminant 4 level.
  • the rectified AC voltage can be increased or decreased. Preferably, it is raised to operate gas discharge lamps between 300V and 400V.
  • This DC voltage Vbus is supplied to an inverter 2, which in the embodiment of the Fig. 1 is realized as a half bridge.
  • the inverter 2 can be realized as a full bridge.
  • the inverter 2 is a switching regulator, which is designed as a resonant converter.
  • the inverter 2 generates an alternating voltage with a frequency adjustable by a control unit 5.
  • the dimming of a connected gas discharge lamp 4 can be done by changing the frequency of the generated AC voltage and / or by changing the level of the inverter 2 supplying DC voltage Vbus.
  • the designed as a half-bridge inverter 2 comprises two series-connected switches S1, S2 alternately.
  • the switches S1, S2 are preferably designed as power transistors and in particular as a MOSFET.
  • the drain terminal of the first switch S1 which is also referred to as a higher-potential switch, is connected to the DC voltage Vbus.
  • the source connection of the higher-potential switch S1 is connected to the drain terminal of the second switch S2, which is also referred to as a potential-low switch.
  • the source terminal of the potential low switch S2 is finally connected to ground.
  • the switching of the switches S1, S2 takes place in a known manner by the control unit 5, which can be realized as an integrated circuit (IC) and in particular as an ASIC.
  • the control unit has two terminals 11, 12, which serve to control the respective switches S1, S2.
  • the control unit 5 At the first terminal 11, the control unit 5 generates a first control signal Vs1.
  • the first control signal Vs1 directly or indirectly controls the switch S1.
  • a second control signal Vs2 for controlling the potential-low switch S2 is provided by the control unit 5.
  • a resistor is also provided between the gate terminal and the source terminal of the potential-low switch S2.
  • the shape of such control signals Vs1, Vs2 is known per se.
  • these control signals Vs1, Vs2 can be designed as PWM signals.
  • Fig. 1 shows an embodiment for an indirect driving of the switch S1, in which an intermediate circuit 6 is provided between the terminal 11 and the higher-potential switch S1. This intermediate circuit 6 serves in principle to bring about a potential separation between the control unit 5 and switch S1.
  • the intermediate circuit 6 comprises a transformer L1, a primary capacitor C1 relative to the transformer L1 and a secondary side circuit comprising a series circuit of the secondary winding of the transformer, a capacitor C2, a resistor and a diode D1.
  • the cathode of the diode D1 is connected to the gate terminal of the switch S1.
  • a transistor T connected in series with a resistor is also arranged in parallel with the series connection.
  • the intermediate circuit 6 is optional and can be omitted. However, the potential separation then falls away.
  • a load circuit 13 is connected, which has a series resonant circuit 3 and the lighting means 4.
  • the series resonant circuit 3 consists of a first capacitor C3, a coil L2, and a second capacitor C4.
  • the first capacitor C3 is a coupling capacitor, which connects the load circuit 13 capacitively to the node of the inverter 2.
  • the coil L2 and the second capacitor C4 are respectively the resonance inductor and the resonant capacitor of the resonant circuit 3.
  • the discharge path of the luminous means 4 is connected in parallel to the resonant capacitor C4.
  • the resonant output circuit series resonant circuit 3 or load circuit 13 may also have additional electrical components or alternative interconnections.
  • at least one light source 4 in particular at least one gas discharge lamp is operated.
  • two terminals 7, 8 are provided for a first coil or heating coil of the luminous means 4, and two terminals 9, 10 for a second coil or heating coil of the luminous means 4.
  • the first or upper or higher potential coil is connected at the connection point between the resonance inductor L2 and the resonance capacitor C4.
  • the second or lower or potential-lower coil is connected to ground.
  • a series circuit of a coil L3, L4 and a capacitor C5, C6 is arranged in each case.
  • a heating power in the coils inductively over the respective coil L3, L4 are transmitted. This inductive form of transmitting a heating power is particularly preferred in dimmable operating circuits.
  • the lower heating coil or the connection 9 for the lower heating coil is connected via a voltage divider to a second voltage Vdd.
  • the voltage divider is formed by connecting two resistors R1, R6 in series between the second voltage Vdd and the terminal 9.
  • connection point between these two resistors R1, R6 is connected to the first terminal 11 for controlling the higher-potential switch S1.
  • this connection point may be connected to the second connection 12 of the control unit 5 for controlling the potential-low switch S2.
  • a DC path or a DC path 14 is formed via the lower coil of the luminous means 4 and the resistors R6, R1 mounted between the terminals 9, 10.
  • This DC path 14 (or DC detection path 14 called) can be detected whether a bulb malfunction or a fault condition exists.
  • a lamp failure can e.g. consist in that there is a spiral break, that the light source has not been used, or that the light source has been removed.
  • the control unit 5 can infer the presence of a luminous means 4 and use this knowledge for the further operation of the luminous means 4.
  • an ASIC 5 can drive both the high level S1 and the low level switch S2 of a half-bridge inverter 2, which supplies the load circuit 13 with the gas discharge lamp 4.
  • the number of required pins 11, 12 of the ASIC 5 can be reduced.
  • a single pin 11 of the ASIC 5 is used both for detecting the lamp 4 used and for driving the high-level switch Sldes half-bridge inverter 2.
  • this pin 11 of the ASIC 5 can be detected whether a lamp 4 is used with a coil or not, especially since the voltage at this pin depends on the inserted coil or not.
  • the detection of the coil used is preferably carried out in a so-called standby state in which the half-bridge 2 is not clocked.
  • a DC path 14 is connected to the filament of the gas discharge lamp 4.
  • a combination of the low level switch S2 of the inverter 2 with a DC detection path for a lamp 4 used is basically also possible, but does not have the advantages of, for example, the galvanic isolation, which is usually present at the high level switch S1.
  • the ASIC 5 can of course be in addition to the in Fig. 1 shown two pins 11, 12 (output signal low level switch, output signal high level switch combined with DC detection path for the lamp) still have more pins. Of primary importance for the invention is that the function "lamp present" is combined with “high-level drive” at one pin of the ASIC 5.
  • the DC detection path 14 can not be as in Fig. 1 represented by the potential-low helix, but also by the potential higher helix, or even by both.
  • the voltage Vdd can be generated internally in the ASIC 5, for example.
  • the lamp filament When the lamp filament is inserted, the lamp filament together with the resistor R1 and the resistor R6 form a voltage divider and thus the DC path 14, so that when the filament is inserted, a different voltage results at the detection pin 11 than in the absence of a filament.
  • a power source may be internally turned on to the detection pin 11 (in the standby state), so that the DC current flows only when the coil is present.
  • the common denominator of both embodiments is that the coil used forms part of a DC path 14 toward the sense pin 11.
  • the ASIC 5 preferably has at least one further pin in order to be supplied with a not yet powered half-bridge 2 via a start-up circuit with a resistor also from the mains voltage.
  • the ASIC 5 is then preferably supplied from the midpoint voltage of the half-bridge inverter 2.
  • the detection of the presence of the helix or the generation of the output signal for the high-level switch S1 takes place in time-separated periods.
  • the period for detecting the presence of the coil is the period in which the half-bridge 2 is not operated. This embodiment is particularly advantageous if the period of time that remains when the half-bridge 2 is actively operated and the high-level switch S1 is not switched on may be too short for detection.
  • the control unit is in particular designed to transmit control signals with a level of e.g. 13V and measuring signals with a low level of e.g. 3.3V to receive.
  • the invention can also be used for drivers for LEDs.
  • a resonant half-bridge converter can be used.
  • a terminal detection can be done or information about the LED can be read.
  • a coding element can be arranged parallel to the LED.
  • the coding element can be formed by a resistor or DIP switch. The value of the resistor or the set combination of the DIP switch can thus be read out as information such as binning, Nominalstrom- or color information on the LED.

Landscapes

  • Circuit Arrangements For Discharge Lamps (AREA)

Claims (15)

  1. Procédé de commande d'au moins un moyen d'éclairage (4), à partir d'un circuit régulateur de commutation cadencé (2)
    • un commutateur (S1, S2) du circuit régulateur de commutation étant contrôlé par un signal de commande (VS1, VS2), le signal de commande (VS1, VS2) étant généré par une unité de commande au niveau d'une borne (11) de l'unité de commande et
    • dans les intervalles de temps pendant lesquels le commutateur (S1, S2) n'est pas contrôlé par l'unité de commande (5), la borne (11) étant utilisée pour la réception d'au moins un signal par l'unité de commande (5),
    caractérisé en ce que
    • l'au moins un signal est un signal de mesure qui reproduit un paramètre électrique concernant le fonctionnement du moyen d'éclairage (4),
    • moyennant quoi, à partir du signal de mesure, le type de moyen d'éclairage (4) utilisé est déterminé et au moins un paramètre de fonctionnement adapté au type de moyen d'éclairage est réglé.
  2. Procédé selon la revendication 1, la borne (11) étant reliée par l'intermédiaire d'une ligne DC (14) avec le moyen d'éclairage ou la borne (11) étant reliée avec une ligne DC formée par le moyen d'éclairage (14).
  3. Procédé selon la revendication 2, une tension continue (Vdd) étant appliquée à la ligne DC (14).
  4. Procédé selon la revendication 3, la tension continue (Vdd) appliquée à la ligne DC (14) étant différente d'une tension d'entrée (Vbus) du circuit régulateur de commutation (2).
  5. Procédé selon la revendication 3 ou la revendication 4, la tension continue (Vdd) appliquée à la ligne DC (14) étant une tension ou un courant interne de l'unité de commande (5).
  6. Procédé selon l'une des revendications précédentes, une modification d'un niveau de l'au moins un signal reçu au niveau de la borne (11) étant détectée par l'unité de commande (5).
  7. Procédé selon l'une des revendications précédentes, un niveau de l'au moins un signal reçu au niveau de la borne (11) étant comparé par l'unité de commande (5) avec une valeur seuil.
  8. Procédé selon l'une des revendications précédentes, la borne (11) étant libérée pour la réception d'au moins signal lorsque le circuit régulateur de commande (2) n'est pas cadencé ou n'est pas utilisé.
  9. Procédé selon l'une des revendications précédentes, le circuit régulateur de commutation (2) comprenant un commutateur (S1) à potentiel plus élevé que l'unité de commande (5) et un commutateur (S2) branché à la masse et à potentiel plus bas et la borne (11) permet la réception d'au moins un signal pour la commande du commutateur (S1) à potentiel plus élevé.
  10. Procédé selon l'une des revendications 1 à 8, le circuit régulateur de commutation (2) comprenant un commutateur (S1) à potentiel plus élevé, isolé galvaniquement de l'unité de commande (5) et un commutateur (S2) à potentiel plus bas, et la borne (11) permet la réception d'au moins un signal pour la commande du commutateur (S1) à potentiel plus élevé et isolé galvaniquement de l'unité de commande.
  11. Procédé selon la revendication 1, le moyen d'éclairage étant une LED et l'au moins un signal étant lu par l'intermédiaire d'un élément de codage parallèle à la LED.
  12. Procédé selon la revendication 11, dans lequel l'élément de codage reproduit une information de « binning », de courant nominal ou de couleur par l'intermédiaire de la LED.
  13. Circuit de commande pour la commande d'au moins un moyen d'éclairage (4), comprenant une unité de commande (5) et un circuit régulateur de commutation (2) cadencé,
    • l'unité de commande (5) étant conçue pour générer un signal de commande (VS1, VS2) pour la commande d'un commutateur (S1, S2) du circuit régulateur de commutation (2) à une borne (11) de l'unité de commande (5) et
    • l'unité de commande (5) étant en outre conçue pour utiliser, pendant les intervalles de temps pendant lesquels le commutateur (S1, S2) n'est pas contrôlé, la borne (11) pour la réception d'au moins un signal
    caractérisé en ce que
    • l'au moins un signal est un signal de mesure qui reproduit un paramètre électrique concernant le fonctionnement du moyen d'éclairage (4),
    • l'unité de commande (5) étant en outre conçue pour déterminer, à partir du signal de mesure, le type de moyen d'éclairage (4) utilisé et pour régler au moins un paramètre de fonctionnement adapté au type de moyen d'éclairage.
  14. Circuit de commande selon la revendication 13, qui est conçu comme un pilote pour des LED.
  15. Circuit de commande selon la revendication 13 ou la revendication 14, dans lequel le circuit régulateur de commutation (2) cadencé est un convertisseur à demi-pont résonant.
EP12818498.3A 2011-12-23 2012-12-18 Procédé permettant de faire fonctionner un moyen d'éclairage Active EP2796011B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102011089838 2011-12-23
DE102012204118A DE102012204118A1 (de) 2011-12-23 2012-03-15 Betrieb von Leuchtmitteln
PCT/EP2012/075948 WO2013092586A2 (fr) 2011-12-23 2012-12-18 Procédé permettant de faire fonctionner un moyen d'éclairage

Publications (2)

Publication Number Publication Date
EP2796011A2 EP2796011A2 (fr) 2014-10-29
EP2796011B1 true EP2796011B1 (fr) 2018-06-13

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Application Number Title Priority Date Filing Date
EP12818498.3A Active EP2796011B1 (fr) 2011-12-23 2012-12-18 Procédé permettant de faire fonctionner un moyen d'éclairage

Country Status (4)

Country Link
EP (1) EP2796011B1 (fr)
CN (1) CN104012181B (fr)
DE (1) DE102012204118A1 (fr)
WO (1) WO2013092586A2 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108917924A (zh) * 2018-05-12 2018-11-30 宁波馨颢净水设备有限公司 Uv紫外线检测与计时电子镇流器

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WO2008002685A2 (fr) * 2006-06-28 2008-01-03 International Rectifier Corporation Circuit de commande de ballast simplifié
EP2141966A1 (fr) * 2007-04-24 2010-01-06 Panasonic Electric Works Co., Ltd Dispositif d'allumage de lampe d'éclairage et dispositif d'éclairage

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JP3329929B2 (ja) * 1994-02-15 2002-09-30 松下電工株式会社 高圧放電灯点灯装置
US5770925A (en) * 1997-05-30 1998-06-23 Motorola Inc. Electronic ballast with inverter protection and relamping circuits
JP4314715B2 (ja) * 2000-02-29 2009-08-19 パナソニック電工株式会社 放電灯点灯装置
CN2490787Y (zh) * 2001-07-18 2002-05-08 张洪生 高性能电子镇流器
CN2817288Y (zh) * 2005-08-15 2006-09-13 袁荣荣 一种高强度气体放电灯电子镇流器
EP1776000A3 (fr) * 2005-10-12 2008-05-28 Int Rectifier Corp Circuit intégré à 8 pattes pour un ballast électronique muni d' une correction du facteur de puissance
US7312588B1 (en) * 2006-09-15 2007-12-25 Osram Sylvania, Inc. Ballast with frequency-diagnostic lamp fault protection circuit
TW200930153A (en) * 2007-12-21 2009-07-01 Chuan Shih Ind Co Ltd Dimming circuit of a discharge lamp

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008002685A2 (fr) * 2006-06-28 2008-01-03 International Rectifier Corporation Circuit de commande de ballast simplifié
EP2141966A1 (fr) * 2007-04-24 2010-01-06 Panasonic Electric Works Co., Ltd Dispositif d'allumage de lampe d'éclairage et dispositif d'éclairage

Also Published As

Publication number Publication date
WO2013092586A2 (fr) 2013-06-27
CN104012181A (zh) 2014-08-27
DE102012204118A1 (de) 2013-06-27
EP2796011A2 (fr) 2014-10-29
CN104012181B (zh) 2016-10-12
WO2013092586A3 (fr) 2013-08-15

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