WO2007028367A1 - Method and device for controlling a headlight - Google Patents

Method and device for controlling a headlight Download PDF

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Publication number
WO2007028367A1
WO2007028367A1 PCT/DE2006/001555 DE2006001555W WO2007028367A1 WO 2007028367 A1 WO2007028367 A1 WO 2007028367A1 DE 2006001555 W DE2006001555 W DE 2006001555W WO 2007028367 A1 WO2007028367 A1 WO 2007028367A1
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WO
WIPO (PCT)
Prior art keywords
headlamp
fog
headlight
range
reduced
Prior art date
Application number
PCT/DE2006/001555
Other languages
German (de)
French (fr)
Inventor
Joachim Schenk
Original Assignee
Robert Bosch Gmbh
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 Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Publication of WO2007028367A1 publication Critical patent/WO2007028367A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
    • B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
    • B60Q1/18—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights being additional front lights
    • B60Q1/20—Fog lights
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
    • B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
    • B60Q1/14—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights having dimming means
    • B60Q1/1415—Dimming circuits
    • B60Q1/1423—Automatic dimming circuits, i.e. switching between high beam and low beam due to change of ambient light or light level in road traffic
    • B60Q1/143—Automatic dimming circuits, i.e. switching between high beam and low beam due to change of ambient light or light level in road traffic combined with another condition, e.g. using vehicle recognition from camera images or activation of wipers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q2300/00—Indexing codes for automatically adjustable headlamps or automatically dimmable headlamps
    • B60Q2300/05—Special features for controlling or switching of the light beam
    • B60Q2300/054—Variable non-standard intensity, i.e. emission of various beam intensities different from standard intensities, e.g. continuous or stepped transitions of intensity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q2300/00—Indexing codes for automatically adjustable headlamps or automatically dimmable headlamps
    • B60Q2300/30—Indexing codes relating to the vehicle environment
    • B60Q2300/31—Atmospheric conditions
    • B60Q2300/312—Adverse weather
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q2300/00—Indexing codes for automatically adjustable headlamps or automatically dimmable headlamps
    • B60Q2300/40—Indexing codes relating to other road users or special conditions
    • B60Q2300/42—Indexing codes relating to other road users or special conditions oncoming vehicle

Definitions

  • the invention relates to a method and a device for controlling a headlamp, in particular for a motor vehicle, according to the type of independent
  • Headlight of the vehicle depending on the position of the vehicle, the time and the external brightness are switched. Furthermore, it is known to provide the horizontal deflection of the light cone of the headlights as a function of the steering angle, so that the light cone of the headlights is directed in a curve in the direction of the road.
  • sensors are known from various publications, which are able to detect fog and put the windshield wiper device in operation or increase the sensitivity for the commissioning of windshield wipers in the detection of such a fog state.
  • the method according to the invention with the features of the main claim has the advantage that the visibility for the driver of the motor vehicle is significantly improved in fog.
  • the headlight range of the normal vehicle headlights is reduced upon detection of a fog condition.
  • the detection means is designed as a switch which serves for switching on the fog lights or the rear fog lamp of the motor vehicle, so that the headlamp range of the headlamp is reduced by switching on the fog lamp or the rear fog lamp. This can be improved in a very simple way the view for the driver.
  • the detection means can also be designed as an optical sensor, so that the light range is automatically reduced when the optical sensor detects a fog condition.
  • the headlamp range of the headlamp is reduced by the inclination of the headlamp. It is equally advantageous if the headlight has a reflector and the headlight range is reduced by a movement or adjustment of the reflector.
  • the method is further improved by the fact that the fog state is characterized by a variable, for example the fog density, the recognition means recognizes this size and the reduction of the illumination range takes place as a function of this size.
  • the largest headlamp range of the headlamp in the case of the low beam is set when no fog condition is detected.
  • the device according to the invention for controlling a headlamp has the advantage that a control device is provided which is provided for carrying out the method according to one of the preceding claims.
  • Figure 1 is a schematic representation of a device according to the invention.
  • Figure 2 is a schematic representation of the method according to the invention.
  • FIG. 1 shows a schematic representation of a device according to the invention.
  • This essentially comprises a headlight 10, a detection means 12 and a controller 14.
  • the headlight 10 in this case comprises a halogen or xenon lamp 16, which is located in the region of a reflector 18.
  • the reflector 18 is to reduce the beam range, so the change in the light cone of the headlamp 10 by an adjustment means 20 adjustable.
  • This may be a servo motor or a piezo or polymer actuator which is capable of tilting the reflector 18. This is the case, for example, when the motor vehicle is heavily loaded in the rear area, so that the direction of illumination of the headlamps is directed too far upwards in normal low beam and therefore an excessive headlamp range is reached, the opposite - A -
  • a headlamp leveling switch 22 is provided in common vehicles, with which the headlamp range of the headlamp 10 can be reduced for the low beam.
  • the headlamp leveling switch 22 is connected to the controller 14, which controls the adjusting means 20.
  • the detection means 12 is designed as a switch, the
  • a current source 26 is provided for operating the device.
  • the power source 26 is connected to the headlight 10, with various switches and control devices are interposed here, which are not shown here for reasons of clarity.
  • the power source 26 is with the detection means
  • the controller 14 which controls the adjusting means 20, thereupon, according to the invention, lowers the light beam for the low beam of the headlamp 10, by correspondingly adjusting the reflector 18 of the headlamp 10, so that the headlight range of the headlamp 10 is reduced and glare of the driver is prevented.
  • the entire headlight 10 can be inclined downwards in the direction of the roadway and thus lowered, so that this also takes place a headlight range reduction.
  • appropriate panels or additional reflectors can be used for this purpose.
  • Another possibility is to provide the recognition means 12 as a sensor, in particular an optical sensor. Such sensors are already known and serve to control windshield wiper devices. If such a sensor now recognizes a fog condition as recognition means 12, then the rear fog lamp and / or the fog lamps 24 can be switched on and a signal can be transmitted to the controller 14. The controller 14 is then able to reduce the beam range of the headlamp 10.
  • the inventive method is shown in a schematic representation.
  • a recognition step 30 After starting the system, which usually starts with the start of the motor vehicle, it is checked in a recognition step 30 whether or not there is a fog condition. As soon as such a condition is present in one Inclination step 32, the headlight range of the headlamp 10 is reduced. Subsequently, the recognition step begins again until no more fog is detected. In this case, then in a reset step 34, the headlamp range of the headlamp 10 is raised back to its normal position.
  • the headlights 10 correspond to the normal headlights of the motor vehicle, which are also provided for the low beam and the high beam, so that no additional headlights are needed.
  • the luminous intensity of the headlamp 10 during the fog state so if the headlight range is reduced, can be increased.
  • the detection means
  • the adjusting means 20 which is designed for example as a fast servomotor, lowered in a variation of the invention, the reflector 18 and the headlight 10 from very quickly, so that a brief glare of the driver is avoided.
  • the lowering of the headlamp 10 and the reflector 18 always takes place in the minimum state, which corresponds to the state that is optimal for driving in fog, regardless of how much the vehicle is loaded.
  • a load-dependent lowering, or headlamp range reduction take place.
  • the controller 14 may also control the positioning motor 20 such that the reflector 18 or the headlight 10 is brought into the position which is provided for the highest load of the motor vehicle.
  • Wavelength of the headlight light positioned in front of the lamp 16 so that, for example, a longer-wave light, which is advantageous in fog, the light cone of the headlamp 10 forms.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)

Abstract

A method is proposed for controlling a headlight (10), in particular of a motor vehicle. The headlight (10) has a first beam width which corresponds to the beam width during normal driving operations. Furthermore, a detection means is provided for detecting a fog state. The beam width of the headlight (10) is reduced when a fog state is detected. The device according to the invention has a control device which is used to carry out the method described above.

Description

Verfahren und Vorrichtung zum Steuern eines ScheinwerfersMethod and device for controlling a headlamp
Stand der TechnikState of the art
Die Erfindung betrifft ein Verfahren und eine Vorrichtung zum Steuern eines Scheinwerfers, insbesondere für ein Kraftfahrzeug, nach Gattung der unabhängigenThe invention relates to a method and a device for controlling a headlamp, in particular for a motor vehicle, according to the type of independent
Ansprüche.Claims.
Es sind schon zahlreiche Verfahren und Vorrichtungen zum Steuern von Scheinwerfern bekannt. Beispielsweise ist aus der DE-A-19962394 ein Verfahren zum automatischen Schalten von Außenbeleuchtungseinrichtungen eines Kraftfahrzeugs bekannt, bei der dieNumerous methods and devices for controlling headlamps are already known. For example, from DE-A-19962394 a method for automatically switching exterior lighting devices of a motor vehicle is known in which the
Scheinwerfer des Kraftfahrzeugs in Abhängigkeit von der Position des Fahrzeugs, der Uhrzeit und der Außenhelligkeit geschaltet werden. Weiterhin ist bekannt, die horizontale Auslenkung des Lichtkegels der Scheinwerfer in Abhängigkeit des Lenkwinkels vorzusehen, sodass der Lichtkegel der Scheinwerfer in einer Kurve in Richtung der Fahrbahn gerichtet ist.Headlight of the vehicle depending on the position of the vehicle, the time and the external brightness are switched. Furthermore, it is known to provide the horizontal deflection of the light cone of the headlights as a function of the steering angle, so that the light cone of the headlights is directed in a curve in the direction of the road.
Darüber hinaus ist es bekannt, bei Kraftfahrzeugen eine so genannte Leuchtweitenregelung vorzusehen. Hierbei wird die vertikale Ausrichtung des Scheinwerfers, bzw. des Lichtkegels des Scheinwerfers, in Abhängigkeit der Beladung des Kraftfahrzeugs verändert. Auf diese Weise wird gewährleistet, dass die Leuchtweite der Scheinwerfer bei einem beladenen Kraftfahrzeug im Verhältnis zum unbeladenen Kraftfahrzeug konstant bleibt. Darüber hinaus sind auch Nebelscheinwerfer für Kraftfahrzeuge bekannt, welche eine niedrigere Leuchtweite als die normalen Scheinwerfer, im so genannten Abblendlicht, aufweisen und damit das Frontfeld des Kraftfahrzeugs bei Nebel stärker beleuchten, da bei derartigen Nebelzuständen die Sicht des Fahrers durch eine zu hohe Leuchtweite aufgrund der Lichtreflektion durch den Nebel eher verringert wird.In addition, it is known to provide a so-called headlight range control in motor vehicles. Here, the vertical orientation of the headlamp, or the light cone of the headlamp, is changed depending on the load of the motor vehicle. In this way, it is ensured that the headlamp range of the headlights remains constant in a loaded motor vehicle in relation to the unloaded motor vehicle. In addition, fog lights for motor vehicles are also known, which have a lower beam range than the normal headlights, in the so-called low beam, and thus illuminate the front of the vehicle in fog stronger, since in such fog conditions the driver's view through a too high beam range due to Light reflection through the fog is rather reduced.
Aus verschiedenen Veröffentlichungen sind darüber hinaus Sensoren bekannt, welche Nebel zu erkennen vermögen und bei der Erkennung eines solchen Nebelzustands die Scheibenwischvorrichtung in Betrieb setzen oder die Empfindlichkeit für das Inbetriebsetzen von Scheibenwischern erhöhen.In addition, sensors are known from various publications, which are able to detect fog and put the windshield wiper device in operation or increase the sensitivity for the commissioning of windshield wipers in the detection of such a fog state.
Vorteile der ErfindungAdvantages of the invention
Das erfindungsgemäße Verfahren mit den Merkmalen des Hauptanspruchs hat den Vorteil, dass die Sicht für den Fahrer des Kraftfahrzeugs bei Nebel wesentlich verbessert wird. Hierzu wird die Leuchtweite der normalen Fahrzeugscheinwerfer bei Erkennung eines Nebelzustands reduziert.The method according to the invention with the features of the main claim has the advantage that the visibility for the driver of the motor vehicle is significantly improved in fog. For this purpose, the headlight range of the normal vehicle headlights is reduced upon detection of a fog condition.
Durch die in den Unteransprüchen aufgeführten Maßnahmen ergeben sich vorteilhafte Weiterbildungen und Verbesserungen der im Hauptanspruch angegebenen Merkmale.The measures listed in the dependent claims, advantageous refinements and improvements of the main claim features.
Besonders vorteilhaft ist es, wenn das Erkennungsmittel als Schalter ausgebildet ist, der zum Einschalten der Nebelscheinwerfer oder der Nebelschlussleuchte des Kraftfahrzeugs dient, sodass die Leuchtweite des Scheinwerfers durch Einschalten des Nebelscheinwerfers oder der Nebelschlussleuchte reduziert wird. Hierdurch kann auf sehr einfache Weise die Sicht für den Fahrer verbessert werden.It is particularly advantageous if the detection means is designed as a switch which serves for switching on the fog lights or the rear fog lamp of the motor vehicle, so that the headlamp range of the headlamp is reduced by switching on the fog lamp or the rear fog lamp. This can be improved in a very simple way the view for the driver.
Das Erkennungsmittel kann aber auch als optischer Sensor ausgebildet sein, sodass die Leuchtweite automatisch reduziert wird, wenn der optische Sensor einen Nebelzustand erkennt.However, the detection means can also be designed as an optical sensor, so that the light range is automatically reduced when the optical sensor detects a fog condition.
In einer besonders einfachen und kostengünstigen Ausführung wird die Leuchtweite des Scheinwerfers durch die Neigung des Scheinwerfers reduziert. Ebenso vorteilhaft ist es, wenn der Scheinwerfer einen Reflektor aufweist und die Leuchtweite durch eine Bewegung oder Verstellung des Reflektors reduziert wird.In a particularly simple and inexpensive design, the headlamp range of the headlamp is reduced by the inclination of the headlamp. It is equally advantageous if the headlight has a reflector and the headlight range is reduced by a movement or adjustment of the reflector.
Weiter verbessert wird das Verfahren dadurch, dass der Nebelzustand durch eine Größe, beispielsweise die Nebeldichte, charakterisiert wird, das Erkennungsmittel diese Größe erkennt und die Reduzierung der Leuchtweite in Abhängigkeit dieser Größe erfolgt.The method is further improved by the fact that the fog state is characterized by a variable, for example the fog density, the recognition means recognizes this size and the reduction of the illumination range takes place as a function of this size.
Besonders vorteilhaft ist es hierbei, wenn die größte Leuchtweite des Scheinwerfers beim Abblendlicht dann eingestellt wird, wenn kein Nebelzustand erkannt wird.It is particularly advantageous in this case if the largest headlamp range of the headlamp in the case of the low beam is set when no fog condition is detected.
Die erfindungsgemäße Vorrichtung zum Steuern eines Scheinwerfers hat den Vorteil, dass ein Steuergerät vorgesehen ist, das zur Durchführung des Verfahrens nach einem der vorhergehenden Ansprüche vorgesehen ist.The device according to the invention for controlling a headlamp has the advantage that a control device is provided which is provided for carrying out the method according to one of the preceding claims.
Zeichnungendrawings
Ein Ausführungsbeispiel der Erfindung ist in den Zeichnungen dargestellt und in der nachfolgenden Beschreibung näher erläutert. Es zeigen:An embodiment of the invention is illustrated in the drawings and explained in more detail in the following description. Show it:
Figur 1 eine schematische Darstellung einer erfindungsgemäßen Vorrichtung undFigure 1 is a schematic representation of a device according to the invention and
Figur 2 eine schematische Darstellung der erfindungsgemäßen Verfahrens.Figure 2 is a schematic representation of the method according to the invention.
Beschreibung des AusführungsbeispielsDescription of the embodiment
In Figur 1 ist eine schematische Darstellung einer erfindungsgemäßen Vorrichtung gezeigt. Diese umfasst im Wesentlichen einen Scheinwerfer 10, ein Erkennungsmittel 12 sowie eine Steuerung 14. Der Scheinwerfer 10 umfasst hierbei eine Halogen- oder Xenonlampe 16, die sich im Bereich eines Reflektors 18 befindet. Der Reflektor 18 ist zur Reduzierung der Leuchtweite, also zur Veränderung des Lichtkegels des Scheinwerfers 10 durch ein Einstellmittel 20 verstellbar. Dies kann ein Stellmotor oder ein Piezo- oder Polymeraktuator sein, der den Reflektor 18 zu kippen vermag. Dies ist beispielsweise dann der Fall, wenn das Kraftfahrzeug im Heckbereich stark beladen wird, sodass die Leuchtrichtung der Scheinwerfer bei normalem Abblendlicht zu weit nach oben gerichtet ist und daher eine zu hohe Leuchtweite erreicht wird, die entgegen - A -FIG. 1 shows a schematic representation of a device according to the invention. This essentially comprises a headlight 10, a detection means 12 and a controller 14. The headlight 10 in this case comprises a halogen or xenon lamp 16, which is located in the region of a reflector 18. The reflector 18 is to reduce the beam range, so the change in the light cone of the headlamp 10 by an adjustment means 20 adjustable. This may be a servo motor or a piezo or polymer actuator which is capable of tilting the reflector 18. This is the case, for example, when the motor vehicle is heavily loaded in the rear area, so that the direction of illumination of the headlamps is directed too far upwards in normal low beam and therefore an excessive headlamp range is reached, the opposite - A -
kommende Fahrzeuge blenden kann. Hierzu ist bei gängigen Kraftfahrzeugen ein Leuchtweitenregelungsschalter 22 vorgesehen, mit dem die Leuchtweite des Scheinwerfers 10 für das Abblendlicht reduziert werden kann. Der Leuchtweitenregelungsschalter 22 ist mit der Steuerung 14 verbunden, die das Einstellmittel 20 ansteuert. Das Erkennungsmittel 12 ist als Schalter ausgebildet, der zumcan dazzle upcoming vehicles. For this purpose, a headlamp leveling switch 22 is provided in common vehicles, with which the headlamp range of the headlamp 10 can be reduced for the low beam. The headlamp leveling switch 22 is connected to the controller 14, which controls the adjusting means 20. The detection means 12 is designed as a switch, the
Ein- und Ausschalten einer Nebelschlussleuchte oder eines Nebelscheinwerfers 24 dient. Zum Betrieb der Vorrichtung ist darüber hinaus eine Stromquelle 26 vorgesehen. Die Stromquelle 26 ist mit dem Scheinwerfer 10 verbunden, wobei hier verschiedene Schalter und Steuergeräte zwischengeschaltet sind, die hier aus Gründen der Übersichtlichkeit nicht gezeichnet sind. Darüber hinaus ist die Stromquelle 26 mit dem ErkennungsmittelSwitching on and off of a rear fog lamp or fog lamp 24 is used. In addition, a current source 26 is provided for operating the device. The power source 26 is connected to the headlight 10, with various switches and control devices are interposed here, which are not shown here for reasons of clarity. In addition, the power source 26 is with the detection means
12 verbunden, welches dazu dient, die Nebelscheinwerfer 24 einzuschalten. Werden die Nebelscheinwerfer 24 durch das Erkennungsmittel 12 eingeschaltet, so erkennt die Steuerung 14, dass ein Nebelzustand vorliegt. Die Steuerung 14, die das Einstellmittel 20 ansteuert, senkt daraufhin erfϊndungsgemäß den Lichtkegel für das Abblendlicht des Scheinwerfers 10 ab, indem es den Reflektor 18 des Scheinwerfers 10 entsprechend verstellt, sodass die Leuchtweite des Scheinwerfers 10 reduziert wird und eine Blendung des Fahrers verhindert wird.12, which serves to turn on the fog lights 24. When the fog lights 24 are turned on by the detection means 12, the controller 14 recognizes that there is a fog condition. The controller 14, which controls the adjusting means 20, thereupon, according to the invention, lowers the light beam for the low beam of the headlamp 10, by correspondingly adjusting the reflector 18 of the headlamp 10, so that the headlight range of the headlamp 10 is reduced and glare of the driver is prevented.
In einer Variation der Erfindung kann selbstverständlich auch der gesamte Scheinwerfer 10 nach unten in Richtung der Fahrbahn geneigt und damit abgesenkt werden, sodass hierdurch ebenfalls eine Leuchtweitenreduzierung stattfindet. Auch entsprechende Blenden oder zusätzliche Reflektoren können hierzu verwendet werden. Eine weitere Möglichkeit besteht darin, das Erkennungsmittel 12 als Sensor, insbesondere optischen Sensor vorzusehen. Derartige Sensoren sind bereits bekannt und dienen zur Steuerung von Scheibenwischvorrichtungen. Erkennt ein derartiger Sensor als Erkennungsmittel 12 nun einen Nebelzustand, so können die Nebelschlussleuchte und/ oder die Nebelscheinwerfer 24 eingeschaltet werden und ein Signal an die Steuerung 14 vermittelt werden. Die Steuerung 14 vermag dann die Leuchtweite des Scheinwerfers 10 zu reduzieren.In a variation of the invention, of course, the entire headlight 10 can be inclined downwards in the direction of the roadway and thus lowered, so that this also takes place a headlight range reduction. Also appropriate panels or additional reflectors can be used for this purpose. Another possibility is to provide the recognition means 12 as a sensor, in particular an optical sensor. Such sensors are already known and serve to control windshield wiper devices. If such a sensor now recognizes a fog condition as recognition means 12, then the rear fog lamp and / or the fog lamps 24 can be switched on and a signal can be transmitted to the controller 14. The controller 14 is then able to reduce the beam range of the headlamp 10.
In Figur 2 ist das erfindungsgemäße Verfahren in einer schematischen Darstellung gezeigt. Nach dem Start des Systems, welches im Regelfall mit dem Start des Kraftfahrzeugs einsetzt, wird in einem Erkennungsschritt 30 überprüft, ob ein Nebelzustand vorliegt oder nicht. Sobald ein solcher Zustand vorliegt, wird in einem Neigungsschritt 32 die Leuchtweite des Scheinwerfers 10 reduziert. Anschließend beginnt der Erkennungsschritt von neuem so lange, bis kein Nebelzustand mehr erkannt wird. In diesem Fall wird dann in einem Rückstellschritt 34 die Leuchtweite des Scheinwerfers 10 wieder in ihre normale Position angehoben.In Figure 2, the inventive method is shown in a schematic representation. After starting the system, which usually starts with the start of the motor vehicle, it is checked in a recognition step 30 whether or not there is a fog condition. As soon as such a condition is present in one Inclination step 32, the headlight range of the headlamp 10 is reduced. Subsequently, the recognition step begins again until no more fog is detected. In this case, then in a reset step 34, the headlamp range of the headlamp 10 is raised back to its normal position.
Die Scheinwerfer 10 entsprechen hierbei den normalen Scheinwerfern des Kraftfahrzeugs, die auch für das Abblendlicht und das Fernlicht vorgesehen sind, sodass keine zusätzlichen Scheinwerfer benötigt werden. In einer Variation der Erfindung kann auch die Leuchtstärke des Scheinwerfers 10 während des Nebelzustands, wenn also die Leuchtweite reduziert ist, erhöht werden. In einer Variation kann das ErkennungsmittelThe headlights 10 correspond to the normal headlights of the motor vehicle, which are also provided for the low beam and the high beam, so that no additional headlights are needed. In a variation of the invention, the luminous intensity of the headlamp 10 during the fog state, so if the headlight range is reduced, can be increased. In a variation, the detection means
12 selbstverständlich auch über einen separaten Schalter realisiert sein. Das Einstellmittel 20, das beispielsweise als schneller Stellmotor ausgebildet ist, senkt in einer Variation der Erfindung, den Reflektor 18 bzw. den Scheinwerfer 10 sehr schnell ab, sodass auch eine kurzzeitige Blendung des Fahrers vermieden wird. Die Absenkung des Scheinwerfers 10 bzw. des Reflektors 18 erfolgt hierbei immer in den Minimalzustand, der dem Zustand entspricht, der für Fahrten bei Nebel optimal ist und zwar unabhängig davon, wie stark das Fahrzeug beladen ist. Natürlich kann hier auch eine beladungsabhängige Absenkung, bzw. Leuchtweitenreduzierung erfolgen.12 of course be realized via a separate switch. The adjusting means 20, which is designed for example as a fast servomotor, lowered in a variation of the invention, the reflector 18 and the headlight 10 from very quickly, so that a brief glare of the driver is avoided. The lowering of the headlamp 10 and the reflector 18 always takes place in the minimum state, which corresponds to the state that is optimal for driving in fog, regardless of how much the vehicle is loaded. Of course, here also a load-dependent lowering, or headlamp range reduction take place.
In einer einfachen Ausführung kann die Steuerung 14 den Stellmotor 20 auch derart ansteuern, dass der Reflektor 18 bzw. der Scheinwerfer 10 in die Stellung gebracht wird, die für die höchste Beladung des Kraftfahrzeugs vorgesehen ist.In a simple embodiment, the controller 14 may also control the positioning motor 20 such that the reflector 18 or the headlight 10 is brought into the position which is provided for the highest load of the motor vehicle.
In einer weiteren Variation der Erfindung werden zusätzlich zur Reduzierung der Leuchtweite des Scheinwerfers 10 noch verschiedene Farbfilter zur Veränderung derIn a further variation of the invention, in addition to reducing the beam range of the headlamp 10 different color filter for changing the
Wellenlänge des Scheinwerferlichts vor der Lampe 16 positioniert, sodass beispielsweise ein längerwelliges Licht, das bei Nebel vorteilhaft ist, den Lichtkegel des Scheinwerfers 10 bildet. Wavelength of the headlight light positioned in front of the lamp 16, so that, for example, a longer-wave light, which is advantageous in fog, the light cone of the headlamp 10 forms.

Claims

Verfahren und Vorrichtung zum Steuern eines ScheinwerfersAnsprüche Method and device for controlling a headlight claims
1. Verfahren zum Steuern eines Scheinwerfers (10), insbesondere eines Kraftfahrzeugs, wobei der Scheinwerfer (10) eine erste Leuchtweite aufweist und ein Erkennungsmittel (12) zur Erkennung eines Nebelzustandes vorgesehen ist, dadurch gekennzeichnet, dass dieA method for controlling a headlamp (10), in particular a motor vehicle, wherein the headlamp (10) has a first light range and a detection means (12) is provided for detecting a fog condition, characterized in that the
Leuchtweite bei Erkennung eines Nebelzustandes reduziert wird.Lighting range is reduced when detecting a fog condition.
2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass das Erkennungsmittel (12) als Schalter ausgebildet ist, der zum Einschalten mindestens eines Nebelscheinwerfers (24) oder einer Nebelschlussleuchte dient und die Leuchtweite des Scheinwerfers (10) durch2. The method according to claim 1, characterized in that the detection means (12) is designed as a switch which serves to switch on at least one fog light (24) or a rear fog lamp and the headlight range of the headlamp (10)
Einschalten des Nebelscheinwerfers (24) oder der Nebelschlussleuchte reduziert wird.Turning on the fog lamp (24) or the rear fog lamp is reduced.
3. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass als Erkennungsmittel (12) ein optischer Sensor, insbesondere ein Regensensor, vorgesehen ist.3. The method according to claim 1, characterized in that as a detection means (12), an optical sensor, in particular a rain sensor, is provided.
4. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Leuchtweite durch eine Neigung des Scheinwerfers (10) reduziert wird.4. The method according to any one of the preceding claims, characterized in that the headlight range is reduced by an inclination of the headlamp (10).
5. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Scheinwerfer einen Reflektor (18) aufweist und die Leuchtweite durch eine Bewegung des5. The method according to any one of the preceding claims, characterized in that the headlight has a reflector (18) and the headlight range by a movement of the
Reflektors (18) reduziert wird.Reflector (18) is reduced.
6. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Nebelzustand durch eine Größe charakterisiert wird, das Erkennungsmittel diese Größe erkennt und die Reduzierung der Leuchtweite in Abhängigkeit dieser Größe erfolgt.6. The method according to any one of the preceding claims, characterized in that the fog state is characterized by a size, the detection means detects this size and the reduction of the range of illumination takes place in dependence of this size.
7. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die größte Leuchtweite dann eingestellt wird, wenn kein Nebelzustand erkannt wird. 7. The method according to any one of the preceding claims, characterized in that the largest headlight range is set when no fog condition is detected.
8. Vorrichtung zum Steuern eines Scheinwerfers (10), insbesondere für ein Kraftfahrzeug, dadurch gekennzeichnet, dass eine Steuerung (14) zur Durchführung des Verfahrens nach einem der vorhergehenden Ansprüche vorgesehen ist. 8. An apparatus for controlling a headlamp (10), in particular for a motor vehicle, characterized in that a controller (14) for carrying out the method according to one of the preceding claims is provided.
PCT/DE2006/001555 2005-09-05 2006-09-05 Method and device for controlling a headlight WO2007028367A1 (en)

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DE102005041991.7 2005-09-05
DE200510041991 DE102005041991A1 (en) 2005-09-05 2005-09-05 Method and device for controlling a headlamp

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