EP1379108B1 - Module d'alimentation et d'identification de LED - Google Patents

Module d'alimentation et d'identification de LED Download PDF

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Publication number
EP1379108B1
EP1379108B1 EP03014744A EP03014744A EP1379108B1 EP 1379108 B1 EP1379108 B1 EP 1379108B1 EP 03014744 A EP03014744 A EP 03014744A EP 03014744 A EP03014744 A EP 03014744A EP 1379108 B1 EP1379108 B1 EP 1379108B1
Authority
EP
European Patent Office
Prior art keywords
unit
supply
led
led unit
identity
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
EP03014744A
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German (de)
English (en)
Other versions
EP1379108A1 (fr
Inventor
Gotthard Dr. Schleicher
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.)
Filing date
Publication date
Application filed by Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH filed Critical Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
Publication of EP1379108A1 publication Critical patent/EP1379108A1/fr
Application granted granted Critical
Publication of EP1379108B1 publication Critical patent/EP1379108B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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

Definitions

  • the invention relates to a supply unit for LED units, and a method for detecting the identity of LED units, in particular for detecting necessary for the power supply of the LED unit parameters, and a corresponding LED unit.
  • supply units operate from LED units with different loads.
  • LED light emitting device
  • OLED organic light emitting device
  • supply units supply only one output voltage for the power supply of a connected LED unit. If several or different LED units experience a power supply by the supply unit, the supply unit must be designed for the power supply of several or different LED units and obtain the power supply necessary information about nominal parameters of the LED units to be supplied.
  • the object of the present invention is therefore to provide a supply unit, an LED unit and a method for detecting LED units, which is improved with regard to the supply of various LED units by a supply unit.
  • a supply unit for at least one LED unit has a detection unit, which is designed to detect the identity of the LED unit via electrical variables, and supply terminals for the power supply of the LED unit by the supply unit.
  • the identity of the LED unit is detected via the supply connections.
  • Prior art supply units are adjacent to the power supply supply lines The LEDs need more lines to get information about the identity of the LEDs. This leads in practice to a considerable installation effort.
  • the supply terminals serving the power supply can be used simultaneously to detect the identity of connected LED units and to determine, for example, which power supply is needed for the LEDs.
  • the supply unit can be kept compact and simple, so that the required installation effort is significantly reduced.
  • a control unit is further included in the supply unit, which controls the power supply of the LED unit on the basis of the detected identity of the LED unit. This makes it possible to evaluate the detected identity of the connected LED units and to control accordingly, so that the supply unit automatically always provides the correct power supply when, for example, a new or additional LED unit with possibly different nominal load is connected to the supply unit.
  • the control unit can also prevent the power supply and output a feedback on the state of the connected LED unit, for example, if it is defective or incompatible with the supply unit.
  • the detection and the power supply are preferably carried out exclusively via two supply connections.
  • the method according to the invention for identifying the identity of at least one LED unit comprises the following steps: providing a first electrical variable for the LED unit to be recognized, identifying the identity of the LED unit with reference to one of the LED unit in response to the first electrical unit Size provided second electrical size.
  • the identification of the identity takes place via power supply connections for the LED unit.
  • the method further comprises the control of the power supply of the LED unit on the basis of the recognized identity of the LED unit.
  • the method can be repeatedly executed during operation of the LED unit.
  • the necessary power supply checked and adjusted if necessary.
  • the detection and the power supply of the LED unit preferably take place exclusively via two supply connections.
  • a voltage which is relatively small in relation to the power supply is preferably applied as the first electrical variable, and the LED unit is identified by an impedance of an identification unit as a second electrical variable.
  • the impedance of the identification unit with respect to the effective at the applied small voltage LED impedance is small.
  • the supply unit of the LED unit essentially " sees” only the identification unit and only evaluates the second electrical quantity provided by the identification unit, without an influence of downstream LEDs significantly influencing the returned second electrical variable.
  • the impedance may in the simplest case be an ohmic resistance. But there are also active components possible, which generate an electrical variable of their own. Likewise, digital components can serve for the stated purpose.
  • the identification unit is a separate component from the LEDs, which may be upstream of the LEDs in the LED unit, for example.
  • the LED unit according to the invention for connection to the above-mentioned supply unit has at least one LED, supply terminals for supplying power to the supply unit, and an identification unit with technical properties detectable in recognizing the identity of the LED unit.
  • the identification unit can be identified via the supply connections.
  • the detection and power supply can be carried out exclusively via two supply connections, via which the LED unit is connected to the supply unit.
  • the identification unit can be switched off. This is advantageous because it is not needed in the actual power supply and thus unnecessary power consumption is avoided.
  • the impedance of the identification unit is preferably small compared with the LED impedance applied to the LED unit in proportion to the power supply small voltage effective.
  • the figure shows a system of a supply unit 1 and an LED unit 2, which are connected to each other via the supply lines 4a, 4b.
  • further connections 8 for connecting further LED units 2 can be provided on the LED unit 2, which can then likewise receive the required power supply through the supply unit 1.
  • the supply unit 1 contains a recognition unit 7, via which the supply unit 1 can recognize information about the connected LED units 2, for example the supply voltage or the like required for the power supply by the supply unit 1 for operating the LED unit 2.
  • an identification unit 3 is provided in the LED unit 2 according to the invention in addition to the LEDs 9.
  • the identification unit 3 returns information about the identity of the corresponding LED unit 2 to the recognition unit 7 in the supply unit 1. This happens because the detection unit 7 initially outputs an electrical quantity (as a rule a voltage which is small in relation to the supply voltage for the connected LEDs) to the LED unit 2 via the supply lines 4a, 4b (position A of the switch 13).
  • the identification unit 3 may consist only of an impedance characteristic of the LED unit, an ohmic resistance. This impedance is preferably small compared to the effective at a small voltage impedance of the LEDs 9, so that approximately at an applied voltage, a current flows only through the identification unit 3 and the detection unit 7, the LEDs 9 therefore does not " see” and thus only a response of the Identification unit 3 to the detection unit 7 takes place.
  • the identification unit can also contain other electrical or electronic (also active) components which are suitable for a signal characteristic of the identification unit 3 of the corresponding LED unit 2 in response to one of the detection unit 7 via the supply terminals 4a, 4b to provide provided electrical size.
  • the detection unit 7 can now determine the power supply (supply voltage) required for the connected LED unit 2. Via an optional control unit 6, the information about the power supply can be forwarded to a provided in the supply unit 1 output unit 5, for example, generates and outputs the necessary supply voltage for the LED unit (s) 2. For this purpose, the control unit 6 switches to the switch state B, and the power supply of the LED unit (s) 2 generated by the output unit 5 via the supply terminals 4a, 4b.
  • the control unit 6 switches to the switch state B, and the power supply of the LED unit (s) 2 generated by the output unit 5 via the supply terminals 4a, 4b.
  • the identification unit 3 also represents a power consumer, it can optionally be switched off, for example via a switch 12 triggered by a control 10, when the power supply begins. This can occur, for example, in that the control element 10 detects a supply voltage output by the supply unit 1 and then switches the switch 12 to the open state, so that a supply current only flows through the LEDs 9.
  • the power supply can be switched to the detection mode (switch position A), for example, to check whether an LED unit 2 has been broken or replaced.
  • the supply parameters can be redetermined during operation and adjusted accordingly in the output mode (switch position 2).

Landscapes

  • Control Of El Displays (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Burglar Alarm Systems (AREA)
  • Led Devices (AREA)

Claims (8)

  1. Procédé de reconnaissance de l'identité d'au moins une unité à LED (2) qui comporte les étapes suivantes :
    fourniture d'une première grandeur électrique pour l'unité à LED (2) à reconnaître,
    reconnaissance de l'identité de l'unité à LED (2) à l'aide d'une deuxième grandeur électrique fournie par l'unité à LED (2) en réaction à la première grandeur électrique, la reconnaissance de l'identité s'effectuant par l'intermédiaire de bornes d'alimentation (4a, 4b) servant à l'alimentation en puissance de l'unité à LED (2),
    caractérisé par le fait que,
    pour la reconnaissance de l'identité de l'unité à LED (2), on applique une petite tension par rapport à l'alimentation en puissance et on reconnaît l'unité à LED (2) par une impédance d'une unité d'identification (3),
    l'impédance de l'unité d'identification (3) étant petite par rapport à l'impédance de LED efficace pour la petite tension appliquée.
  2. Procédé selon la revendication 1, caractérisé par le fait qu'il comprend aussi la commande de l'alimentation en puissance de l'unité à LED (2) ou des unités à LED (2) sur la base de l'identité reconnue de l'unité à LED (2) .
  3. Procédé selon la revendication 1 ou 2, caractérisé par le fait qu'il est exécuté plusieurs fois lors du fonctionnement de l'unité à LED (2).
  4. Procédé selon l'une des revendications 1 à 3, caractérisé par le fait que la reconnaissance et l'alimentation en puissance de l'unité à LED (2) s'effectuent exclusivement par l'intermédiaire des bornes d'alimentation (4a, 4b).
  5. Unité à LED (2) à raccorder à une unité d'alimentation (1),
    l'unité d'alimentation (1) ayant les caractéristiques suivantes :
    une unité de reconnaissance (7) conçue pour la reconnaissance de l'identité de l'unité à LED (2) par l'intermédiaire de grandeurs électriques,
    des bornes d'alimentation (4a, 4b) pour l'alimentation en puissance de l'unité à LED (2) par l'unité d'alimentation (1),
    la reconnaissance de l'identité de l'unité à LED (2) s'effectuant par l'intermédiaire des bornes d'alimentation (4a, 4b),
    et l'unité à LED (2) ayant les caractéristiques suivantes :
    au moins une LED (9),
    une unité d'identification (3) avec des propriétés techniques détectables lors de la reconnaissance de l'identité de l'unité à LED (2), l'unité d'identification (3) étant identifiable par l'intermédiaire des bornes de raccordement (4a, 4b),
    et l'unité à LED (2) étant caractérisée par le fait que l'impédance de l'unité d'identification (3) est petite par rapport à une impédance de LED efficace pour une tension qui est appliquée à l'unité à LED (2) et qui est petite par rapport à l'alimentation en puissance.
  6. Unité à LED (2) selon la revendication 5, caractérisée par le fait que la reconnaissance et l'alimentation en puissance peuvent s'effectuer exclusivement par l'intermédiaire de deux bornes d'alimentation (4a, 4b).
  7. Unité à LED (2) selon la revendication 5 ou 6, caractérisée par le fait que l'unité d'identification (3) peut être arrêtée.
  8. Système constitué d'au moins une unité à LED (2) selon l'une des revendications 5 à 7 et d'une unité d'alimentation (1), avec les caractéristiques suivantes :
    une unité de reconnaissance (7) conçue pour la reconnaissance de l'identité de l'unité à LED (2) par l'intermédiaire de grandeurs électriques,
    des bornes d'alimentation (4a, 4b) pour l'alimentation en puissance de l'unité à LED (2) par l'unité d'alimentation (1),
    la reconnaissance de l'identité de l'unité à LED (2) s'effectuant par l'intermédiaire des bornes d'alimentation (4a, 4b).
EP03014744A 2002-07-04 2003-06-27 Module d'alimentation et d'identification de LED Expired - Lifetime EP1379108B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10230154 2002-07-04
DE10230154A DE10230154A1 (de) 2002-07-04 2002-07-04 Versorgungseinheit

Publications (2)

Publication Number Publication Date
EP1379108A1 EP1379108A1 (fr) 2004-01-07
EP1379108B1 true EP1379108B1 (fr) 2006-09-27

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Family Applications (1)

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EP03014744A Expired - Lifetime EP1379108B1 (fr) 2002-07-04 2003-06-27 Module d'alimentation et d'identification de LED

Country Status (5)

Country Link
US (1) US6975214B2 (fr)
EP (1) EP1379108B1 (fr)
AT (1) ATE341184T1 (fr)
CA (1) CA2434240A1 (fr)
DE (2) DE10230154A1 (fr)

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DE102013207700A1 (de) * 2013-04-26 2014-11-13 Tridonic Gmbh & Co Kg Modul mit Messsignalrückführung über potentialtrennenden Wandler
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EP3075212B1 (fr) * 2013-11-28 2021-03-17 Tridonic GmbH & Co. KG Convertisseur à del pour un module à del
EP3075213B1 (fr) * 2013-11-28 2019-01-09 Tridonic GmbH & Co. KG Module à led
WO2015077809A1 (fr) * 2013-11-28 2015-06-04 Tridonic Gmbh & Co Kg Procédé et dispositif de détection d'un module à led
AT14906U1 (de) * 2013-11-28 2016-08-15 Tridonic Gmbh & Co Kg LED-Modul
AT15120U1 (de) * 2013-12-20 2017-01-15 Tridonic Gmbh & Co Kg LED-Treiber zum Auslesen von Information eines LED-Moduls
DE102014208710A1 (de) * 2014-05-09 2015-11-26 Tridonic Gmbh & Co Kg Betriebsgerät, Leuchte und Verfahren zum Versorgen eines LED-Moduls
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Also Published As

Publication number Publication date
DE50305158D1 (de) 2006-11-09
CA2434240A1 (fr) 2004-01-04
ATE341184T1 (de) 2006-10-15
US6975214B2 (en) 2005-12-13
DE10230154A1 (de) 2004-01-15
EP1379108A1 (fr) 2004-01-07
US20040056774A1 (en) 2004-03-25

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