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5 November 2018 Color temperature changeable adaptive driving beam for enhanced human perception
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Abstract
In this paper, we propose the novel LED Adaptive Driving Beam which enables to increase the visibility of the driver under the heavy weather condition such as fogs, rain fall, snow, yellow dust. For higher visibility, the Beam had lamp with 2-chips LED( 6,000K and 3,000K) has been synchronized with light, humidity, rain sensors to detect harsh weather condition on a road. Stereovision system with wide angle camera analyzed visibility of a driver under such weather condition and LDM commended ECU to control the color temperature of the head lamp simultaneously. Also visibility of the lamp and simulator for the further system research has been developed for the validation of the lamp. The developed beam which enable color temperature variation illuminates target object such as traffic signs, reflective sheet with various brightness and color. Human perception and the luminance of the target object with a CL-500A illuminometer has been analyzed for Adaptive Driving Beam. The average luminance of 6,000K light source on the high luminance reflection sheet under clear road obstacle is 26.7% higher than that of 3,000K. On the other hand, the average luminance of 3,000K light source on the high luminance reflection sheet on the road obstacle during rainy day was 11.25% higher than that of 6,000K.
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Jae Young Joo, Eun Jung Choi, and Hyen Sou Park "Color temperature changeable adaptive driving beam for enhanced human perception", Proc. SPIE 10815, Optical Design and Testing VIII, 108150H (5 November 2018); https://doi.org/10.1117/12.2502960
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