World Journal of Engineering Research and Technology

R. Rashmi* and Dr. B. Ramachandra

ABSTRACT

Head lamps are designed to light / illuminate the way ahead. Traditionally automotive designs use two beams; Main beam is normally used on unlit roads where long sight distance is needed and high speeds are allowed and Dipped beam is normally used to provide good road illumination & still offer no dazzling intensity (glare) to the oncoming traffic. The primary objective for the use of headlamp leveling systems in the vehicle is to control the increase in glare that occurs with headlamps aimed too high. Dipped beam light cut off will move up-down as per the vehicle loading conditions such as co- passenger, rear seat occupants and boot load. Due to different loading conditions, naturally beam will move up and certainly cause the glare for the oncoming traffic. To overcome this problem National and International regulations currently specifies a limited range within which the vertical aim (illumination range) of the dipped headlamps must be maintained under various vehicle load conditions either by automatically or by manual headlamp leveling system to avoid the glare for the oncoming traffic. Earlier one is cost effective and generally used in all types of lower and middle class of vehicle. Second one used in higher segment class of vehicles and more expensive. To overcome this problem Investigation and formulation of low cost semiautomatic headlamp leveling devices is developed. This proposed technology will address the lower and mid-segment vehicle in India, considering India is a still developing and lower economy country. This paper describe the study of load sensors located in different seating position and boot load to provide the signals to the headlamp actuator for maintaining the required beam pattern. Finally total system was integrated and calibrated as per the national and international norms.

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