DE10215472B4 - Method for operating a lighting device for vehicles with a lamp arrangement having at least one light-emitting diode and illumination device for vehicles - Google Patents
Method for operating a lighting device for vehicles with a lamp arrangement having at least one light-emitting diode and illumination device for vehicles Download PDFInfo
- Publication number
- DE10215472B4 DE10215472B4 DE10215472A DE10215472A DE10215472B4 DE 10215472 B4 DE10215472 B4 DE 10215472B4 DE 10215472 A DE10215472 A DE 10215472A DE 10215472 A DE10215472 A DE 10215472A DE 10215472 B4 DE10215472 B4 DE 10215472B4
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- Germany
- Prior art keywords
- current
- time
- pulse width
- control
- control unit
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- 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.)
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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
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/20—Responsive to malfunctions or to light source life; for protection
- H05B47/21—Responsive to malfunctions or to light source life; for protection of two or more light sources connected in parallel
- H05B47/22—Responsive to malfunctions or to light source life; for protection of two or more light sources connected in parallel with communication between the lamps and a central unit
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- 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]
- H05B45/40—Details of LED load circuits
- H05B45/44—Details of LED load circuits with an active control inside an LED matrix
-
- 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]
- H05B45/50—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
Abstract
Verfahren zum Betrieb einer Beleuchtungseinrichtung für Fahrzeuge mit einer mindestens eine Leuchtdiode aufweisenden Lampenanordnung, welche über eine Verbindungsleitung mit einem Steuergerät zur Stromversorgung verbunden ist, wobei der vom Steuergerät zur Lampenanordnung fließende Strom von einer Stromüberwachungsschaltung für Glühlampen im Steuergerät zur Funktionskontrolle der Lampenanordnung gemessen wird, dadurch gekennzeichnet, daß der Stromfluß auf der Stromleitung direkt oder indirekt durch die Ansteuerung einer elektrischen Last (Stromsenke) eingestellt wird, wobei die Pulsweite (duty cycle: Verhältnis von high-level-time zu low-level-time) eines periodischen Signals zeitlich entsprechend der zu simulierenden Stromkennlinie einer Glühlampe moduliert wird.method for operating a lighting device for vehicles with at least one a light-emitting diode having lamp assembly, which via a Connecting cable connected to a control unit for power is, being from the control unit flowing to the lamp assembly Power from a power monitoring circuit for incandescent lamps in the control unit is measured to check the function of the lamp assembly, characterized characterized in that Current flow on the power line directly or indirectly by the control of a electrical load (current sink) is set, the pulse width (duty cycle: ratio from high-level-time to low-level-time) of a periodic signal in time according to the current characteristic to be simulated light bulb is modulated.
Description
Die Erfindung bezieht sich auf Verfahren zum Betrieb einer Beleuchtungseinreichtung für Fahrzeuge mit einer mindestens eine Leuchtdiode aufweisenden Lampenanordnung zur Simulation der Stromkennlinie, d.h. des zeitlichen Stromverlaufs, insbesondere der Kalteinschaltstromspitze einer Glühlampe, wobei auf einer Stromleitung ein der Stromkennlinie der Glühlampe zumindest ähnlicher Stromverlauf erzeugt wird, der von einer Strommeßschaltung gemessen wird.The The invention relates to methods of operating a lighting device for vehicles with a lamp arrangement having at least one light-emitting diode to simulate the current characteristic, i. the temporal current course, in particular the cold inrush current of an incandescent lamp, wherein on a power line one of the current characteristic of the incandescent lamp at least more similar Current waveform is generated, which is measured by a current measuring circuit.
Das Problem der Glühlampensimulation taucht insbesondere in Verbindung mit Blinkschaltungen auf, bei denen ein konventioneller Blinkgeber, der für die Ansteuerung und Kontrolle von Glühlampen ausgelegt ist, für die Ansteuerung und Kontrolle einer Lampenanordnung verwendet werden soll, welche Leuchtdioden anstatt von Glühlampen aufweist, da die Stromaufnahme von LEDs wesentlich geringer ist als die von Glühlampen. Dabei wird der Strom, der vom Blinkgeber über die Stromleitung zur Lampenanordnung fließt, über eine integrierte Strommeßschaltung gemessen, wobei ein Stromwert unterhalb eines bestimmten Schwellwertes als Lampenausfall gewertet wird.The Problem of the light bulb simulation emerges in particular in connection with flashing circuits, in which a conventional flasher used for driving and control from light bulbs is designed for the control and control of a lamp assembly can be used should, which has light-emitting diodes instead of incandescent lamps, since the current consumption of LEDs is much lower than that of incandescent lamps. This is the stream, from the flasher over the power line to the lamp assembly flows through an integrated current measuring circuit measured, with a current value below a certain threshold is rated as lamp failure.
Der
Betrieb von LED-Lampenanordnungen in Verbindung mit Kontrollschaltungen,
die eigentlich für
den Betrieb von Glühlampen
ausgelegt sind, sowie die Nachbildung des Glühlampenstroms ist auch aus
den Dokumenten
Darüber hinaus
ist es aus der nachveröffentlichten
Aufgabe der Erfindung ist es daher, ein Verfahren zum Betrieb einer Beleuchtungseinreichtung für Fahrzeuge mit einer mindestens eine Leuchtdiode aufweisenden Lampenanordnung anzugeben, mit dem in einfacher und zuverlässiger Weise die gesamte Stromkennlinie einer Glühlampe zumindest annähernd nachgebildet wird.task The invention therefore provides a method for operating a lighting device for vehicles with a lamp arrangement having at least one light-emitting diode specify with the in a simple and reliable way the entire current characteristic a light bulb at least approximately is reproduced.
Diese Aufgabe wird erfindungsgemäß gelöst, indem der Stromfluß auf der Stromleitung direkt oder indirekt durch die Ansteuerung einer elektrischen Last (Stromsenke) eingestellt wird, wobei die Pulsweite (duty cycle: Verhältnis von high-level-time zu low-level-time) eines periodischen Signals zeitlich entsprechend der zu simulierenden Stromkennlinie einer Glühlampe moduliert wird.These The object is achieved according to the invention by the current flow on the power line directly or indirectly by the control of a electrical load (current sink) is set, the pulse width (duty cycle: ratio from high-level-time to low-level-time) of a periodic signal in time according to the current characteristic to be simulated light bulb is modulated.
In einer ersten bevorzugten Ausführungsform wird das periodische, pulsweitenmodulierte Signal dem Eingang eines Tiefpasses zugeführt, wobei das geglättete Ausgangsspannungssignal des Tiefpasses dann dazu dient eine über einen Spannungspegel einstellbare Stromsenke anzusteuern, die wiederum letztendlich einen Stromfluß auf der Stromleitung bewirkt, der dem Verlauf einer Glühlampenstromkennlinie entspricht.In a first preferred embodiment the periodic, pulse width modulated signal is the input of a Fed low-pass, being the smoothed Output voltage signal of the low pass then serves one over a Voltage level adjustable current sink to control, in turn ultimately a current flow the power line causes the course of a light bulb current characteristic equivalent.
In einer alternativen Ausführungsform schaltet das periodische, pulsweitenmodulierte Signal direkt eine elektrische Last periodisch zu und ab. Damit wird über die Dauer des Blinkimpulses ein sich zeitlich gemäß einer Glühlampenstromkennlinie ändernder Effektivwert für den Strom erzeugt, wobei die Frequenz des periodischen Steuersignals höher ist als die höchste Frequenz, die die träge Strommeßschaltung im Blinkgeber auflösen kann.In an alternative embodiment Switches the periodic, pulse width modulated signal directly on electrical load periodically to and from. This is about the Duration of the flash pulse is a temporally changing according to a light bulb current characteristic Rms value for generates the current, the frequency of the periodic control signal is higher as the highest Frequency, which is lethargic current sensing circuit in the flasher can.
Anhand der beigefügten Zeichnungen soll die Erfindung nachfolgend näher erläutert werden. Es zeigt:Based the attached Drawings, the invention will be explained in more detail below. It shows:
Der Stromimpuls, der bei Ausfall mindestens einer LED erzeugt wird, wird in einem bestimmten Zeitfenster während des Blinkimpulses erzeugt, wobei die Detektionsschaltung im Vorschaltgerät ein Kontrollzeitfenster aufweist, das mit dem Zeitfenster für die Erzeugung des Fehlerstromimpulses synchronisiert ist. Wenn die Detektionsschaltung innerhalb des Kontrollzeitfensters einen Fehlerstrom detektiert, wird die „Simulationslast" nicht mehr zugeschaltet. So ist es in einer Ausführungsform beispielsweise vorgesehen, im Falle eines Ausfallfehlers 100 Millisekunden nach dem Start des Blinkimpulses einen Fehlerimpuls von 10 bis 20 Millisekunden Dauer zu generieren. Beim ersten Blinkimpuls nach einem Ausfallfehler wird dann zwar noch die „Simulationslast" zugeschaltet. Der detektierte Fehlerimpuls wird jedoch von der Steuer- und Überwachungsschaltung gespeichert, so daß das Zuschalten der „Simulationslast" bereits beim nächsten Blinkimpuls unterbleibt und so der Fehler vom Steuergerät/Blinkgeber erkannt wird. Um die Fehlerinformation auch während der Blinkpause, in der auch das Vorschaltgerät nicht mit elektrischer Energie versorgt wird, in der Steuer- und Überwachungsschaltung (z.B. einem Mikrokontroller) speichern zu können, ist im Vorschaltgerät eine Elektrolytkondensator (nicht dargestellt) als Versorgungspuffer vorgesehen.Of the Current pulse generated in case of failure of at least one LED, is generated in a certain time window during the blinking pulse, wherein the detection circuit in the ballast has a control time window, that with the time window for the generation of the residual current pulse is synchronized. If the Detection circuit within the control window a fault current detected, the "simulation load" is no longer activated it is in one embodiment for example, provided in the event of a failure error 100 milliseconds after the start of the flashing pulse an error impulse of 10 to 20 Milliseconds duration to generate. After the first blink after In the event of a failure, the "simulation load" will be switched on detected error pulse is however from the control and monitoring circuit stored so that the Connecting the "simulation load" already at the next blinking pulse is omitted and so the error is detected by the controller / flasher. To the error information also during the Blink break, in which even the ballast does not use electrical energy is supplied in the control and monitoring circuit (e.g. a microcontroller) to store, is in the ballast an electrolytic capacitor (not shown) provided as a supply buffer.
Zur
Ausfallkontrolle (siehe
In
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10215472A DE10215472B4 (en) | 2002-04-09 | 2002-04-09 | Method for operating a lighting device for vehicles with a lamp arrangement having at least one light-emitting diode and illumination device for vehicles |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10215472A DE10215472B4 (en) | 2002-04-09 | 2002-04-09 | Method for operating a lighting device for vehicles with a lamp arrangement having at least one light-emitting diode and illumination device for vehicles |
Publications (2)
Publication Number | Publication Date |
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DE10215472A1 DE10215472A1 (en) | 2003-11-06 |
DE10215472B4 true DE10215472B4 (en) | 2007-08-02 |
Family
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DE10215472A Expired - Fee Related DE10215472B4 (en) | 2002-04-09 | 2002-04-09 | Method for operating a lighting device for vehicles with a lamp arrangement having at least one light-emitting diode and illumination device for vehicles |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007052434A1 (en) | 2007-11-02 | 2009-05-07 | Hella Kgaa Hueck & Co. | Method for dimming a light-emitting diode arrangement of a motor vehicle |
Families Citing this family (12)
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DE102004027351B3 (en) * | 2004-06-01 | 2006-01-19 | Siemens Ag | Circuit arrangement for operating an LED signal generator |
GB2417788A (en) * | 2004-09-06 | 2006-03-08 | Lights And Signals Ltd | Emulation circuit for a low energy lamp |
DE102004045435B4 (en) * | 2004-09-18 | 2008-07-31 | Man Nutzfahrzeuge Ag | Monitoring the function of incandescent or LED lights in motor vehicles |
GB2429542B (en) * | 2005-08-25 | 2008-02-27 | Lights And Signals Ltd | Emulation circuit |
DE102006042470A1 (en) * | 2006-09-09 | 2008-03-27 | Hella Kgaa Hueck & Co. | Circuit arrangement for use for simulating load of direction indicator lamp of motor vehicle, has partial loads producing constant current with voltages, and another partial load providing current, which linearly dependent on voltage |
DE202007007777U1 (en) | 2007-06-01 | 2007-08-16 | Conwys Ag | Circuit arrangement for interconnection with towing vehicle and trailer of vehicle train electrical connection, has input connector designed for load by lamp, and potentiometer provided between input connector and output connector |
EP2390140B1 (en) | 2007-06-01 | 2015-07-08 | ConWys AG | Switching assembly |
DE102008042595B3 (en) * | 2008-10-02 | 2009-11-26 | Carsig GbR (Vertretungsberechtigter Gesellschafter: Herr Thomas Kliem, 78628 Rottweil) | Light i.e. rear wall light, monitoring method for e.g. passenger car, involves simulating filament lamp in regulating circuit by load switched parallel to light i.e. LED, where circuit restores part of power consumed during simulation |
DE102010064149A1 (en) * | 2010-12-24 | 2012-06-28 | Johann & Konen Gmbh & Co. Kg | Method for ensuring the correct evaluation of LED lights in combination with vehicle on-board computers |
EP2884821A3 (en) * | 2013-12-10 | 2015-07-29 | Transport-Teknik A/S | Control circuit for light sources in vehicles |
DE102017207346A1 (en) * | 2017-05-02 | 2018-11-08 | Osram Gmbh | CONTROLLING AT LEAST ONE BULB OF A VEHICLE HEADLAMP, DEPENDING ON AN ELECTRICAL SIZE AVAILABLE ON A VEHICLE HEADLAMP CONNECTION OF A VEHICLE |
EP3606289B1 (en) * | 2018-07-31 | 2021-09-15 | Valeo Iluminacion | Electronic device, method for controlling a lighting device and automotive lighting device |
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DE4232545C2 (en) * | 1992-09-29 | 1995-03-16 | Blaupunkt Werke Gmbh | Device for lighting control and / or display elements |
DE4314127C2 (en) * | 1993-04-29 | 1996-10-17 | Loesch Reiner | System for simulating a real, electrical consumer and handheld device as a system component |
US6150771A (en) * | 1997-06-11 | 2000-11-21 | Precision Solar Controls Inc. | Circuit for interfacing between a conventional traffic signal conflict monitor and light emitting diodes replacing a conventional incandescent bulb in the signal |
CA2316632A1 (en) * | 2000-08-22 | 2002-02-22 | Harmon Industries, Inc. | Signal interface module |
US20020033702A1 (en) * | 1999-11-19 | 2002-03-21 | Gelcore, Llc | Method and device for remote monitoring of LED lamps |
DE10107578A1 (en) * | 2001-02-17 | 2002-08-29 | Hella Kg Hueck & Co | Lighting system for motor vehicles |
-
2002
- 2002-04-09 DE DE10215472A patent/DE10215472B4/en not_active Expired - Fee Related
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4232545C2 (en) * | 1992-09-29 | 1995-03-16 | Blaupunkt Werke Gmbh | Device for lighting control and / or display elements |
DE4314127C2 (en) * | 1993-04-29 | 1996-10-17 | Loesch Reiner | System for simulating a real, electrical consumer and handheld device as a system component |
US6150771A (en) * | 1997-06-11 | 2000-11-21 | Precision Solar Controls Inc. | Circuit for interfacing between a conventional traffic signal conflict monitor and light emitting diodes replacing a conventional incandescent bulb in the signal |
US20020033702A1 (en) * | 1999-11-19 | 2002-03-21 | Gelcore, Llc | Method and device for remote monitoring of LED lamps |
CA2316632A1 (en) * | 2000-08-22 | 2002-02-22 | Harmon Industries, Inc. | Signal interface module |
DE10107578A1 (en) * | 2001-02-17 | 2002-08-29 | Hella Kg Hueck & Co | Lighting system for motor vehicles |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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DE102007052434A1 (en) | 2007-11-02 | 2009-05-07 | Hella Kgaa Hueck & Co. | Method for dimming a light-emitting diode arrangement of a motor vehicle |
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Publication number | Publication date |
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DE10215472A1 (en) | 2003-11-06 |
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Legal Events
Date | Code | Title | Description |
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OP8 | Request for examination as to paragraph 44 patent law | ||
8127 | New person/name/address of the applicant |
Owner name: HELLA KGAA HUECK & CO., 59557 LIPPSTADT, DE |
|
8364 | No opposition during term of opposition | ||
R081 | Change of applicant/patentee |
Owner name: HELLA GMBH & CO. KGAA, DE Free format text: FORMER OWNER: HELLA KGAA HUECK & CO., 59557 LIPPSTADT, DE |
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R079 | Amendment of ipc main class |
Free format text: PREVIOUS MAIN CLASS: H05B0037030000 Ipc: H05B0047200000 |
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R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |