Citation

Ogura T, Kageyama I, Nasukawa K, Miyashita Y, Kitagawa H, Imada Y. JSAE Rev. 2002; 23(3): 333-339.

Copyright

(Copyright © 2002, Society of Automotive Engineers of Japan, Publisher Elsevier Publishing)

DOI

10.1016/S0389-4304(02)00200-X

PMID

unavailable

Abstract

This paper deals with the fundamental research related to a new sensing system for road surface as the first step to construct an identification tool for the friction coefficient of the road ahead. In this paper, the albedo value is used for the measurement. Because the previous albedo meter measured the road surface by using sunlight, it was not used at night. Therefore, we propose a vehicle-mounted road surface sensing system by using a pair of solar cells with an additional light. From the experimental results, it is shown that the sensing system can measure the difference of road conditions, not only during daytime but also at night. For high reliability of detection, an image processing system of the road surface is proposed. It is shown that the sensor fusion can recognize the difference of the road surface.