Apparatus mounted on vehicles for detecting road surface conditions
AssigneeKabushiki Kaisha Komatsu Seisakusho
InventorToshihiko Fukuhara
Life of this patent
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Abstract
A road surface is scanned with a laser beam in a direction transverse to the road surface to pick up the scanning locus of the laser beam on the road surface in a direction inclined to a beam scanning surface so as to obtain transverse profile data. The laser light reflected from the road surface is received in a direction inclined to the beam scanning surface for obtaining crack data. The distances to the road at three points in the longitudinal direction of a measuring car are measured. The running distance of the car is measured and the measured distance data are recorded in a recording device together with crack data, transverse profile data and longitudinal profile data.
Claims11
A road surface condition detecting apparatus mounted on a vehicle comprising;
- laser beam scanning means for scanning a laser beam in a transverse direction of the road surface;
- image pick-up means for picking up locus of a scanning of said laser beam in an inclined direction for producing transverse profile data of the road surface;
- light receiving means for receiving a laser beam reflected from said road surface in an inclined direction for producing crack data of said road surface;
- road distance detecting means for measuring distances to said road surface from three positions on a line in the longitudinal direction of said vehicle for producing longitudinal profile data of said road surface;
- running distance detecting means for measuring a running distance of said vehicle;
- and
- recording means for recording data respectively produced by said image pick-up means, said light receiving means and said distance detecting means together with the running distance data produced by said running distance detecting means.
Dependencies are inferred from the claim text.