WO2009027406A1 - Method for operating headlights in a motor vehicle - Google Patents

Method for operating headlights in a motor vehicle Download PDF

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Publication number
WO2009027406A1
WO2009027406A1 PCT/EP2008/061160 EP2008061160W WO2009027406A1 WO 2009027406 A1 WO2009027406 A1 WO 2009027406A1 EP 2008061160 W EP2008061160 W EP 2008061160W WO 2009027406 A1 WO2009027406 A1 WO 2009027406A1
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WO
WIPO (PCT)
Prior art keywords
vehicle
motor vehicle
headlights
headlamps
oncoming
Prior art date
Application number
PCT/EP2008/061160
Other languages
German (de)
French (fr)
Inventor
Gökhan Albayrak
Original Assignee
Continental Automotive Gmbh
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Publication date
Application filed by Continental Automotive Gmbh filed Critical Continental Automotive Gmbh
Publication of WO2009027406A1 publication Critical patent/WO2009027406A1/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
    • B60Q1/14—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
    • 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
    • B60Q2300/056—Special anti-blinding beams, e.g. a standard beam is chopped or moved in order not to blind
    • 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
    • B60Q2300/41—Indexing codes relating to other road users or special conditions preceding vehicle
    • 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

  • a method of operating headlamps in a motor vehicle wherein the headlamps are switched between low beam and high beam by signals which are formed in a control unit, wherein a light sensor arranged in the motor vehicle measures the light of oncoming vehicles when the headlights of the motor vehicle operated with high beam become.
  • Such methods of operating headlamps are well-known in the art. After switching on the headlights, the driver can choose between the two types of lighting by switching on either the low beam or the high beam via a switch. Due to the emission characteristic, the high beam has the disadvantage that enticing motor vehicles are dazzled. To avoid this, the driver has to switch from high beam to low beam for oncoming vehicles.
  • a light sensor in the motor vehicle, preferably in the front area, which detects the backlight conditions. If an oncoming vehicle is detected when the main beam is switched on, the headlight on the vehicle side facing the oncoming vehicle is switched from the high beam to the low beam.
  • the automatic switching from high to low beam should be achieved as early as possible to prevent oncoming vehicles from being blinded for an unnecessarily long time, because the driver does not switch to dipped beam until later or in the worst case.
  • switching the high beam to the dipped beam causes the brightness to be considerably reduced very rapidly. is graced. The amount of time until the driver has adapted his vision to the new lighting conditions poses a certain security risk.
  • the present invention is therefore an object of the invention to provide a method for operating headlamps in a motor vehicle, which on the one hand reliably avoids dazzling oncoming vehicles and on the other hand requires less adaptation of the vision of the driver to changing light conditions.
  • the object is achieved in that the light sensor in the detection of a vehicle, which accommodates headlamps turned on, generates a signal that the signal is passed to the control unit, that in the control unit in response to the signal of the light sensor, a signal to Switching from high beam to low beam is formed, and this signal is supplied to those headlights, which is arranged on the side facing the opposite vehicle.
  • the headlight of the motor vehicle is switched from high beam to low beam, which is arranged on the side facing the oncoming vehicle, glare of the oncoming vehicle is avoided.
  • the brightness is reduced by switching only one headlamp to a much lesser extent than would be the case when switching both headlamps.
  • the headlights continue to be illuminated very well by means of the headlamps, which continue to be fitted with high beam, so that persons, animals or cyclists continue to remain easily recognizable. As a result, the driver is less affected, which leads to an increase in safety.
  • the safety of a well-lit roadway is further increased by the fact that the headlights, due to switched to high beam when switching to a high beam headlight when the light sensor is not detecting an oncoming vehicle with headlights turned on. In this way it is ensured that shortly after the oncoming vehicle has passed, the high beam is used to illuminate the road. Delays to switch the headlamp to high beam by the driver are thereby avoided.
  • the detection of oncoming vehicles with activated headlamps, the switching from high beam to low beam and back again, automatically performed by the driver selects the appropriate lighting program. Due to the automatic execution of the individual steps of the procedure, the driver is relieved. Since the driver no longer has to take care of a timely and adequate illumination of the road in response to approaching vehicles, his concentration is less distracted from the traffic, which also contributes to increasing driving safety.
  • an embodiment has proven to be advantageous in which the high beam of the headlamp, which is arranged on the side facing away from the oncoming vehicle, is directed in the direction of the roadside.
  • the deflection of the high beam on the side facing away from the opposite vehicle can be done in addition to switching the headlight, which is arranged on the side facing the oncoming vehicle.
  • Such an embodiment is particularly advantageous in tight bends in which oncoming vehicles otherwise get into the light cone of the headlamp, which is arranged on the side of the motor vehicle facing the roadside.
  • the method not only applies to oncoming vehicles with headlamps on but also in front of driving vehicles with switched taillights and / or brake lights.
  • FIG. 1a a motor vehicle with high beam
  • Figure 2 two oncoming motor vehicles in a further embodiment.
  • Figure Ia shows a road 1 with two lanes 2, 3, wherein in each case one lane 2, 3 is available for traffic in one direction.
  • a motor vehicle moves 4.
  • the headlights 5, 6 of the motor vehicle 4 are switched to high beam 7 due to the lack of oncoming traffic.
  • the motor vehicle 4 further has a light sensor 8, which is arranged in the present case in the front region 9 of the motor vehicle 4. It is also conceivable to arrange the light sensor 8 in the upper region of the windshield 10 of the motor vehicle 4.
  • the light sensor 8 detects the light of oncoming vehicles.
  • the motor vehicle 4 is approached by a vehicle with turned-on headlights 11 on the roadway 3.
  • the light sensor 8 in the motor vehicle 4 the light of the headlights of the vehicle 11 is detected and as a result the headlight 5, which is arranged on the side facing the oncoming vehicle 11, is switched from the high beam 7 to the low beam 12.
  • Only the headlight 6 remains on the high beam 7.
  • a dazzling effect of the oncoming vehicle 11 by the headlight 5 avoided.
  • By further operated with high beam 7 headlight 6 while preventing the illumination of the lane 2 is too much prevented.
  • FIG. 1c shows the further course in which the oncoming vehicle 11 passes the motor vehicle 4.
  • the light sensor 8 detects that the headlight 5 is switched back to the high beam 7.
  • the method achieves a significant reduction in the time in which the road surface is not maximally illuminated.
  • the embodiment shown in Figure 2 corresponds to the method of Figure Ib, in which after the detection of an oncoming headlamps oncoming motor vehicle 11 of the headlight 5 was switched from high beam to low beam 12.
  • the light cone of the high beam 7 of the headlight 6 is directed by the roadway 2 in the direction of the roadside edge 13.
  • the illumination of the road 2 is only slightly reduced.
  • the light cone of the high beam 7 of the headlight 6 is deflected back from the roadside 13 onto the roadway 2 when an oncoming vehicle is detected by the light sensor 8.

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

Abstract

Method for operating headlights in a motor vehicle, wherein the headlights are switched over between dipped headlights and full beam by means of signals which are formed in a control unit, in which method a light sensor which is arranged in the motor vehicle measures the light of oncoming vehicles if the headlights of the motor vehicle are operated with full beam. When an oncoming vehicle which is approaching with its headlights switched on is detected, the light sensor generates a signal which is conducted to the control unit. A signal for switching over from full beam to dipped headlights is formed in the control unit as a function of the signal of the light sensor. Said signal for switching over from full beam to dipped headlights is fed to that headlight which is arranged on the side facing the oncoming vehicle.

Description

Beschreibungdescription
Verfahren zum Betreiben von Scheinwerfern in einem KraftfahrzeugMethod for operating headlamps in a motor vehicle
Verfahren zum Betreiben von Scheinwerfern in einem Kraftfahrzeug, wobei die Scheinwerfer durch Signale, die in einer Steuereinheit gebildet werden, zwischen Abblendlicht und Fernlicht umgeschaltet werden, bei dem ein im Kraftfahrzeug angeordneter Lichtsensor das Licht entgegenkommender Fahrzeuge misst, wenn die Scheinwerfer des Kraftfahrzeugs mit Fernlicht betrieben werden.A method of operating headlamps in a motor vehicle, wherein the headlamps are switched between low beam and high beam by signals which are formed in a control unit, wherein a light sensor arranged in the motor vehicle measures the light of oncoming vehicles when the headlights of the motor vehicle operated with high beam become.
Derartige Verfahren zum Betreiben von Scheinwerfern sind be- kannter Stand der Technik. Nach dem Einschalten der Scheinwerfer kann der Fahrzeugführer zwischen den beiden Beleuchtungsarten wählen, indem er über einen Schalter entweder das Abblend- oder das Fernlicht einschaltet. Das Fernlicht hat aufgrund der Abstrahlcharakteristik den Nachteil, dass entge- genkommende Kraftfahrzeuge geblendet werden. Um dies zu vermeiden, muss der Fahrzeugführer bei entgegenkommenden Fahrzeugen vom Fernlicht auf Abblendlicht umschalten.Such methods of operating headlamps are well-known in the art. After switching on the headlights, the driver can choose between the two types of lighting by switching on either the low beam or the high beam via a switch. Due to the emission characteristic, the high beam has the disadvantage that enticing motor vehicles are dazzled. To avoid this, the driver has to switch from high beam to low beam for oncoming vehicles.
Es ist weiter bekannt, einen Lichtsensor im Kraftfahrzeug, vorzugsweise im Frontbereich, anzuordnen, der die Gegenlichtverhältnisse detektiert. Wird bei eingeschaltetem Fernlicht ein entgegenkommendes Fahrzeug detektiert, so wird der Scheinwerfer auf der Fahrzeugseite, die dem entgegenkommenden Fahrzeug zugewandt ist, von Fernlicht auf Abblendlicht ge- schaltet. Mit dem automatischen Schalten von Fern- auf Abblendlicht soll ein möglichst frühzeitiges Umschalten erreicht werden, um zu verhindern, dass entgegenkommenden Fahrzeuge unnötig lange geblendet werden, weil der Fahrzeugführer erst später oder im schlimmsten Fall nicht auf Abblendlicht schaltet. Trotz dieses Verfahrens besteht weiterhin der Nachteil, dass durch das Umschalten von Fernlicht auf Abblendlicht die Helligkeit sehr schnell im erheblichen Maße redu- ziert wird. Die Zeitspanne, bis der Fahrzeugführer sein Sehvermögen an die neuen Beleuchtungsverhältnisse angepasst hat, stellt ein gewisses Sicherheitsrisiko dar.It is also known to arrange a light sensor in the motor vehicle, preferably in the front area, which detects the backlight conditions. If an oncoming vehicle is detected when the main beam is switched on, the headlight on the vehicle side facing the oncoming vehicle is switched from the high beam to the low beam. The automatic switching from high to low beam should be achieved as early as possible to prevent oncoming vehicles from being blinded for an unnecessarily long time, because the driver does not switch to dipped beam until later or in the worst case. Despite this method, there is still the disadvantage that switching the high beam to the dipped beam causes the brightness to be considerably reduced very rapidly. is graced. The amount of time until the driver has adapted his vision to the new lighting conditions poses a certain security risk.
Der vorliegenden Erfindung liegt daher die Aufgabe zugrunde, ein Verfahren zum Betreiben von Scheinwerfern in einem Kraftfahrzeug zu schaffen, welches zum einen eine Blendung entgegenkommender Fahrzeuge zuverlässig vermeidet und zum anderen eine geringere Anpassung des Sehvermögens des Fahrzeugführers an veränderte Lichtverhältnisse erfordert.The present invention is therefore an object of the invention to provide a method for operating headlamps in a motor vehicle, which on the one hand reliably avoids dazzling oncoming vehicles and on the other hand requires less adaptation of the vision of the driver to changing light conditions.
Die Aufgabe wird erfindungsgemäß dadurch gelöst, dass der Lichtsensor bei der Detektion eines Fahrzeugs, welches mit eingeschalteten Scheinwerfern entgegenkommt, ein Signal er- zeugt, dass das Signal an die Steuereinheit geleitet wird, dass in der Steuereinheit in Abhängigkeit des Signals des Lichtsensors ein Signal zum Umschalten von Fernlicht auf Abblendlicht gebildet wird, und dieses Signal demjenigen Scheinwerfer zugeführt wird, der auf der dem entgegenkommen- den Fahrzeug zugewandten Seite angeordnet ist.The object is achieved in that the light sensor in the detection of a vehicle, which accommodates headlamps turned on, generates a signal that the signal is passed to the control unit, that in the control unit in response to the signal of the light sensor, a signal to Switching from high beam to low beam is formed, and this signal is supplied to those headlights, which is arranged on the side facing the opposite vehicle.
Indem lediglich der Scheinwerfer des Kraftfahrzeugs von Fernlicht auf Abblendlicht umgeschaltet wird, der auf der dem entgegenkommenden Fahrzeug zugewandten Seite angeordnet ist, wird eine Blendung des entgegenkommenden Fahrzeugs vermieden. Zugleich wird die Helligkeit durch das Umschalten nur eines Scheinwerfers in einem wesentlich geringeren Maße vermindert als dies bei Umschalten beider Scheinwerfer der Fall wäre. Überdies wird durch den einen weiter mit Fernlicht betriebe- nen Scheinwerfer der Fahrbahnrand weiterhin sehr gut ausgeleuchtet, so dass Personen, Tiere oder Radfahrer weiterhin gut erkennbar bleiben. Dadurch wird der Fahrzeugführer weniger beeinträchtigt, was zu einer Erhöhung der Sicherheit führt.By only the headlight of the motor vehicle is switched from high beam to low beam, which is arranged on the side facing the oncoming vehicle, glare of the oncoming vehicle is avoided. At the same time, the brightness is reduced by switching only one headlamp to a much lesser extent than would be the case when switching both headlamps. In addition, the headlights continue to be illuminated very well by means of the headlamps, which continue to be fitted with high beam, so that persons, animals or cyclists continue to remain easily recognizable. As a result, the driver is less affected, which leads to an increase in safety.
Die Sicherheit durch eine gut ausgeleuchtete Fahrbahn wird weiter dadurch erhöht, dass der Scheinwerfer, der aufgrund eines mit eingeschalteten Scheinwerfern entgegenkommenden Kraftfahrzeugs auf Abblendlicht geschaltet wurde, auf Fernlicht umgeschaltet wird, wenn der Lichtsensor kein entgegenkommendes Fahrzeug mit eingeschalteten Scheinwerfern detek- tiert. Auf diese Weise wird sichergestellt, dass bereits kurz nachdem das entgegenkommende Fahrzeug passiert wurde, das Fernlicht zur Ausleuchtung der Fahrbahn genutzt wird. Verzögerungen bis zum Umschalten des Scheinwerfers auf Fernlicht durch den Fahrzeugführer werden dadurch vermieden.The safety of a well-lit roadway is further increased by the fact that the headlights, due to switched to high beam when switching to a high beam headlight when the light sensor is not detecting an oncoming vehicle with headlights turned on. In this way it is ensured that shortly after the oncoming vehicle has passed, the high beam is used to illuminate the road. Delays to switch the headlamp to high beam by the driver are thereby avoided.
In einer besonders vorteilhaften Ausgestaltung wird die De- tektion entgegenkommender Fahrzeuge mit eingeschalteten Scheinwerfern, das Umschalten von Fernlicht auf Abblendlicht und wieder zurück, automatisch durchgeführt, indem der Fahr- zeugführer das entsprechende Beleuchtungsprogramm auswählt. Infolge der automatischen Ausführung der einzelnen Schritte des Verfahrens wird der Fahrzeugführer entlastet. Da sich der Fahrzeugführer nicht mehr selbst um eine zeitnahe und ausreichende Ausleuchtung der Fahrbahn in Abhängigkeit entgegenkom- mender Fahrzeuge kümmern muss, wird seine Konzentration weniger vom Verkehrsgeschehen abgelenkt, was ebenso zur Steigerung der Fahrsicherheit beiträgt.In a particularly advantageous embodiment, the detection of oncoming vehicles with activated headlamps, the switching from high beam to low beam and back again, automatically performed by the driver selects the appropriate lighting program. Due to the automatic execution of the individual steps of the procedure, the driver is relieved. Since the driver no longer has to take care of a timely and adequate illumination of the road in response to approaching vehicles, his concentration is less distracted from the traffic, which also contributes to increasing driving safety.
Um eine eventuelle Blendwirkung für entgegenkommende Fahrzeug noch weiter auszuschließen, hat sich eine Ausgestaltung als vorteilhaft erwiesen, in der das Fernlicht des Scheinwerfers, welcher auf der dem entgegenkommenden Fahrzeug abgewandten Seite angeordnet ist, in Richtung des Straßenrands gelenkt wird. Das Ablenken des Fernlichts auf der dem entgegenkommen- den Fahrzeug abgewandten Seite kann zusätzlich zum Umschalten des Scheinwerfers, welcher auf der dem entgegenkommenden Fahrzeug zugewandten Seite angeordnet ist, erfolgen. Eine derartige Ausführung ist insbesondere in engen Kurven von Vorteil, in denen entgegenkommende Fahrzeuge ansonsten in den Lichtkegel des Scheinwerfers geraten, der auf der dem Straßenrand zugewandten Seite des Kraftfahrzeugs angeordnet ist. In einer weiteren vorteilhaften Ausgestaltung findet das Verfahren nicht nur Anwendung bei entgegenkommenden Fahrzeugen mit eingeschalteten Scheinwerfern sondern auch bei vorausfahrenden Fahrzeugen mit eingeschalteten Rücklichtern und/oder Bremslichtern.In order to further exclude a possible dazzling effect for oncoming vehicle, an embodiment has proven to be advantageous in which the high beam of the headlamp, which is arranged on the side facing away from the oncoming vehicle, is directed in the direction of the roadside. The deflection of the high beam on the side facing away from the opposite vehicle can be done in addition to switching the headlight, which is arranged on the side facing the oncoming vehicle. Such an embodiment is particularly advantageous in tight bends in which oncoming vehicles otherwise get into the light cone of the headlamp, which is arranged on the side of the motor vehicle facing the roadside. In a further advantageous embodiment, the method not only applies to oncoming vehicles with headlamps on but also in front of driving vehicles with switched taillights and / or brake lights.
An zwei Ausführungsbeispielen wird die Erfindung näher beschrieben. Dabei zeigen:Two embodiments of the invention will be described in more detail. Showing:
Figur Ia: ein Kraftfahrzeug mit Fernlicht,FIG. 1a: a motor vehicle with high beam,
Figur Ib, c: zwei sich entgegenkommende Kraftfahrzeuge,Figure Ib, c: two oncoming motor vehicles,
Figur 2: zwei sich entgegenkommende Kraftfahrzeuge in einer weiteren Ausführung.Figure 2: two oncoming motor vehicles in a further embodiment.
Figur Ia zeigt eine Straße 1 mit zwei Fahrbahnen 2, 3, wobei jeweils eine Fahrbahn 2, 3 für den Verkehr in einer Richtung zur Verfügung steht. Auf der Fahrbahn 2 bewegt sich ein Kraftfahrzeug 4. Die Scheinwerfer 5, 6 des Kraftfahrzeugs 4 sind aufgrund des nicht vorhandenen Gegenverkehrs auf Fernlicht 7 geschalten. Das Kraftfahrzeug 4 weist weiter einen Lichtsensor 8 auf, der im vorliegenden Fall im Frontbereich 9 des Kraftfahrzeugs 4 angeordnet ist. Es ist auch denkbar, den Lichtsensor 8 im oberen Bereich der Windschutzscheibe 10 des Kraftfahrzeugs 4 anzuordnen. Der Lichtsensor 8 detektiert das Licht entgegenkommender Fahrzeuge.Figure Ia shows a road 1 with two lanes 2, 3, wherein in each case one lane 2, 3 is available for traffic in one direction. On the roadway 2, a motor vehicle moves 4. The headlights 5, 6 of the motor vehicle 4 are switched to high beam 7 due to the lack of oncoming traffic. The motor vehicle 4 further has a light sensor 8, which is arranged in the present case in the front region 9 of the motor vehicle 4. It is also conceivable to arrange the light sensor 8 in the upper region of the windshield 10 of the motor vehicle 4. The light sensor 8 detects the light of oncoming vehicles.
In Figur Ib kommt dem Kraftfahrzeug 4 ein Fahrzeug mit einge- schalteten Scheinwerfern 11 auf der Fahrbahn 3 entgegen. Vom Lichtsensor 8 im Kraftfahrzeug 4 wird das Licht der Scheinwerfer des Fahrzeugs 11 detektiert und infolge dessen der Scheinwerfer 5, der auf der dem entgegenkommenden Fahrzeug 11 zugewandten Seite angeordnet ist, von Fernlicht 7 auf Ab- blendlicht 12 geschaltet. Lediglich der Scheinwerfer 6 bleibt weiter auf Fernlicht 7. Dadurch wird eine Blendwirkung des entgegenkommenden Fahrzeugs 11 durch den Scheinwerfer 5 ver- mieden. Durch den weiter mit Fernlicht 7 betriebenen Scheinwerfer 6 wird dabei gleichzeitig verhindert, dass die Ausleuchtung der Fahrbahn 2 zu stark verringert wird.In FIG. 1 b, the motor vehicle 4 is approached by a vehicle with turned-on headlights 11 on the roadway 3. From the light sensor 8 in the motor vehicle 4, the light of the headlights of the vehicle 11 is detected and as a result the headlight 5, which is arranged on the side facing the oncoming vehicle 11, is switched from the high beam 7 to the low beam 12. Only the headlight 6 remains on the high beam 7. As a result, a dazzling effect of the oncoming vehicle 11 by the headlight 5 avoided. By further operated with high beam 7 headlight 6 while preventing the illumination of the lane 2 is too much prevented.
Figur Ic zeigt den weiteren Verlauf, in dem das entgegenkommende Fahrzeug 11 das Kraftfahrzeug 4 passiert. Sobald das Kraftfahrzeug 4 und das Fahrzeug 11 auf gleicher Höhe sind, wird vom Lichtsensor 8 kein Licht aus den Scheinwerfern des entgegenkommenden Fahrzeugs 11 detektiert, so dass der Scheinwerfer 5 wieder auf Fernlicht 7 geschaltet wird. Auf diese Weise wird mit dem Verfahren eine deutlich Reduzierung der Zeit, in der die Fahrbahn nicht maximal ausgeleuchtet ist erreicht .FIG. 1c shows the further course in which the oncoming vehicle 11 passes the motor vehicle 4. As soon as the motor vehicle 4 and the vehicle 11 are at the same height, no light from the headlights of the oncoming vehicle 11 is detected by the light sensor 8, so that the headlight 5 is switched back to the high beam 7. In this way, the method achieves a significant reduction in the time in which the road surface is not maximally illuminated.
Das in Figur 2 dargestellte Ausführungsbeispiel entspricht hinsichtlich des Verfahrens der Figur Ib, bei dem nach der Detektion eines mit eingeschalteten Scheinwerfern entgegenkommendes Kraftfahrzeug 11 der Scheinwerfer 5 von Fernlicht auf Abblendlicht 12 geschalten wurde. Um eine bei dem darge- stellten Straßenverlauf mögliche Blendwirkung des Gegenverkehrs noch weiter zu reduzieren, wird der Lichtkegel des Fernlichts 7 des Scheinwerfers 6 von der Fahrbahn 2 in Richtung Straßenrand 13 gelenkt. Somit wird die Ausleuchtung der Fahrbahn 2 nur gering reduziert. Analog zu der Darstellung in Figur Ic wird der Lichtkegel des Fernlichts 7 des Scheinwerfers 6 vom Straßenrand 13 wieder auf die Fahrbahn 2 zurückgelenkt, wenn vom Lichtsensor 8 ein entgegenkommendes Fahrzeug detektiert wird. The embodiment shown in Figure 2 corresponds to the method of Figure Ib, in which after the detection of an oncoming headlamps oncoming motor vehicle 11 of the headlight 5 was switched from high beam to low beam 12. In order to further reduce a dazzling effect of oncoming traffic possible in the illustrated road course, the light cone of the high beam 7 of the headlight 6 is directed by the roadway 2 in the direction of the roadside edge 13. Thus, the illumination of the road 2 is only slightly reduced. Analogous to the representation in FIG. 1c, the light cone of the high beam 7 of the headlight 6 is deflected back from the roadside 13 onto the roadway 2 when an oncoming vehicle is detected by the light sensor 8.

Claims

Patentansprüche claims
1. Verfahren zum Betreiben von Scheinwerfern in einem Kraftfahrzeug, wobei die Scheinwerfer durch Signale, die in ei- ner Steuereinheit gebildet werden, zwischen Abblendlicht und Fernlicht umgeschaltet werden, bei dem ein im Kraftfahrzeug angeordneter Lichtsensor das Licht entgegenkommender Fahrzeuge misst, wenn die Scheinwerfer des Kraftfahrzeugs mit Fernlicht betrieben werden, d a d u r c h g e k e n n z e i c h n e t , dass der Lichtsensor bei der Detektion eines Fahrzeugs, welches mit eingeschalteten Scheinwerfern entgegenkommt, ein Signal erzeugt, dass das Signal an die Steuereinheit geleitet wird, dass in der Steuereinheit in Abhängigkeit des Signals des Lichtsensors ein Signal zum Umschalten von Fernlicht auf Abblendlicht gebildet wird, und dieses Signal demjenigen Scheinwerfer zugeführt wird, der auf der dem entgegenkommenden Fahrzeug zugewandten Seite angeordnet ist.1. A method for operating headlights in a motor vehicle, wherein the headlights are switched by signals that are formed in a control unit between low beam and high beam, in which a light sensor arranged in the motor vehicle measures the light of oncoming vehicles when the headlights of Motor vehicle are operated with high beam, characterized in that the light sensor in the detection of a vehicle, which accommodates headlamps, generates a signal that the signal is passed to the control unit that in the control unit in response to the signal of the light sensor, a signal for switching is formed from high beam to low beam, and this signal is the headlight is supplied, which is arranged on the side facing the oncoming vehicle.
2. Verfahren zum Betreiben von Scheinwerfern eines Kraftfahrzeugs nach Anspruch 1, d a d u r c h g e k e n n z e i c h n e t , dass der Scheinwerfer, der aufgrund eines mit eingeschalteten Scheinwerfern entgegenkommenden Fahrzeugs auf Abblendlicht geschaltet wurde, auf Fernlicht umgeschaltet wird, wenn der Lichtsensor kein entgegenkommendes Fahrzeug mit eingeschalteten Scheinwerfern detek- tiert.2. A method for operating headlamps of a motor vehicle according to claim 1, wherein a headlamp, which was switched to dipped beam due to a vehicle with headlamps turned on, is switched to high beam when the light sensor does not detect an oncoming vehicle with headlamps turned on.
3. Verfahren nach Anspruch 1 und 2, d a du r c h g e - k e n n z e i c h n e t , dass die Detektion entgegenkommender Fahrzeug mit eingeschalteten Scheinwerfern und das Umschalten von Fernlicht auf Abblendlicht und wieder zurück, automatisch durch Wahl eines Beleuchtungsprogramms durch den Fahrzeugführer durchgeführt wird.3. The method according to claim 1, wherein a detection of oncoming vehicle with headlamps switched on and switching from high beam to low beam and back again is carried out automatically by the driver selecting a lighting program.
4. Verfahren zum Betreiben von Scheinwerfern eines Kraftfahrzeugs nach Anspruch 1 oder 2, d a du r c h g e k e n n - z e i c h n e t , dass das Fernlicht des Scheinwerfers, welcher auf der dem entgegenkommenden Fahrzeug abgewandten Seite angeordnet ist, in Richtung des Straßenrands gelenkt wird .4. A method for operating headlamps of a motor vehicle according to claim 1 or 2, since you rchgekenn - records that the high beam of the headlamp, which is arranged on the side facing away from the oncoming vehicle, is directed in the direction of the roadside.
5. Verfahren zum Betreiben von Scheinwerfern eines Kraftfahrzeugs nach Anspruch 4, d a d u r c h g e k e n n z e i c h n e t , dass das Fernlicht des Scheinwerfers, welcher auf der dem entgegenkommenden Fahrzeug abgewandten Seite angeordnet ist, zurück auf die Fahrbahn gelenkt wird, wenn der Lichtsensor kein entgegenkommendes Fahrzeug mit eingeschalteten Scheinwerfern detektiert.5. A method for operating headlamps of a motor vehicle according to claim 4, characterized in that the high beam of the headlamp, which is arranged on the side facing away from the oncoming vehicle, is directed back to the roadway when the light sensor detects no oncoming vehicle with headlights turned on.
6. Verfahren zum Betreiben von Scheinwerfern eines Kraftfahr- zeugs nach Anspruch 5, d a d u r c h g e k e n n z e i c h n e t , dass bei der Detektion eines Fahrzeugs, welches mit eingeschalteten Scheinwerfern entgegenkommt, der Scheinwerfer, der auf der dem entgegenkommenden Fahrzeug zugewandten Seite angeordnet ist, auf Abblendlicht geschaltet wird, und dass das Fernlicht des Scheinwerfers, welcher auf der dem entgegenkommenden Fahrzeug abgewandten Seite angeordnet ist, in Richtung des Straßenrands gelenkt wird. 6. A method for operating headlamps of a motor vehicle according to claim 5, characterized in that in the detection of a vehicle, which accommodates headlamps, the headlamp, which is arranged on the side facing the oncoming vehicle, is switched to low beam, and that the high beam of the headlamp, which is arranged on the side facing away from the oncoming vehicle, is directed in the direction of the roadside.
PCT/EP2008/061160 2007-08-29 2008-08-26 Method for operating headlights in a motor vehicle WO2009027406A1 (en)

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