Apparatus for measuring a shape of road surface

Details Apparatus for measuring a shape of road surface Apparatus for measuring a shape of road surface

1995-12-14

1998-04-28

Hellner, Mark

Optics: measuring and testing

Range or remote distance finding

With photodetection

356 501, 3561414, 356376, G01C 308, G01B 1126

Patent

active

057452253

ABSTRACT:
An apparatus of for measuring roughness of a road surface such as convex, concave or inclination is to be mounted on the vehicle. The apparatus comprises a rotation driving member for generating rotation motion in vertical plane and for outputting a signal concerning its rotation angle. An inclinometer is provided to detect an inclined angle of the rotation driving member. A distance measuring member for measuring distance from road surface as being rotated by the rotation motion from said rotation driving member. A processing unit calculates a vertical distance and a horizontal distance between the apparatus and the road surface by means of the inclined angle detected by the inclinometer and the rotation angle detected by the rotation driving member.

REFERENCES:
patent: 4653331 (1987-03-01), Fukuhara
patent: 4674327 (1987-06-01), Swindall et al.
patent: 4796998 (1989-01-01), Soma
patent: 4878754 (1989-11-01), Honma et al.
patent: 5141307 (1992-08-01), Bennett
patent: 5235398 (1993-08-01), Miller et al.
patent: 5323647 (1994-06-01), Blanco
patent: 5515156 (1996-05-01), Yoshida et al.
patent: 5546188 (1996-08-01), Wangler et al.
Japan Abstract of Narutake 3-185310(A) Aug. 1991.
Japan Abstract of Terada 60-122306 (A) Jun. 1985.

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