Lighting in a car always implies increased consumption. The more efficient a technology and its drive electronic is, the higher is the leverage for reductions. Power consumption can not only be achieved by efficient lighting technologies as LEDs. Also new control electronic concepts in combination with adaptive lighting systems may help to increase the power requirement. Intelligent control of an adaptive low beam as an all-weather lighting will need less energy than an additional fog lamp. Lead-free bulbs and circuits avoid unnecessary environmental contaminations, as same as mercury free xenon systems. In all cases the drive control needs at least a redesign. One of the most fascinating future lighting assistance functions is the adaptive driving beam. The driver will become the possibility to drive all the time with high beam without glaring any other cars. In combination with LED technology the beam can be segmented and according to the camera information the area with oncoming or proceeding cars can be out lighted. The light is only in that areas where it is needed, the other areas are dark and the electric power will be reduced. This idea leads to a lot of new functions for the low beam function to save energy by using the light just on demand The low beam light distribution of the Audi R8 is designed out of three different light output elements. The cut-off-line and far distance region is illuminated from the LEDs behind the plastic lens module. There are 6 Chips with a power consumption of 21 W. The area in the front and 28 Environmental Aspects for the side is illuminated with the two reflector shelves. Each shelve contains 4 chips with a power consumption of 14 W per shelve. Normally the car uses all LEDs although there are cars in front of it. The light mainly illuminates the trunk but not the road in front. Based on sensor informations the car can recognize these obstacles and reduce at least the far field illumination or even a part of the near field illumination. In case of the Audi R8 front light the system could save 21 to 35 Watt in city situations or traffic jams. Per car this even are 42 to 70 Watt.


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    Titel :

    Control electronic concepts for lighting systems under environmental aspects


    Beteiligte:
    Berlitz, Stephan (Autor:in) / Huhn, Wolfgang (Autor:in)


    Erscheinungsdatum :

    2009


    Format / Umfang :

    10 Seiten, 8 Bilder, 13 Quellen



    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Control Electronic Concepts for Lighting Systems under Environmental Aspects

    Berlitz, S. / Huhn, W. / VDI-Gesellschaft Fahrzeug- und Verkehrstechnik | British Library Conference Proceedings | 2009



    Control strategies and fail-safe-concepts for adaptive lighting systems

    Rosenhahn,E.O. / Automotive Lighting,DE | Kraftfahrwesen | 2002


    Control Strategies and Fail-Safe-Concepts for Adaptive Lighting Systems

    Rosenhahn, Ernst-Olaf | SAE Technical Papers | 2002


    2002-01-0525 Control Strategies and Fail-Safe-Concepts for Adaptive Lighting Systems

    Rosenhahn, E.-O. / Society of Automotive Engineers | British Library Conference Proceedings | 2002