System for measuring irregularities of road surface

Details System for measuring irregularities of road surface System for measuring irregularities of road surface

1987-10-01

1990-01-30

Rosenberger, Richard A.

Optics: measuring and testing

By polarized light examination

With light attenuation

73146, G01B 1130

Patent

active

048969648

ABSTRACT:
A system for measuring irregularities of a road surface, wherein laser rays irradiated on the road surface are received and processed in a predetermined manner. This system includes a body frame mounted on the road surface, a movable frame movably supported by this body frame, and a laser ray transmitting-receiving section connected to this movable frame. The laser ray transmitting-receiving section is additionally provided thereon with a signal process circuit, by which received signals are processed in a predetermined manner, whereby the irregularities of the road surface are measured. Processing performed in the signal process circuit is controlled in timing in accordance with a moving speed of the laser ray transmitting-receiving section.

REFERENCES:
patent: 3649123 (1972-03-01), Ulicki
patent: 4632543 (1986-12-01), Endo
patent: 4653316 (1987-03-01), Fukahara
patent: 4658639 (1987-04-01), Arnberg
patent: 4685806 (1987-08-01), Arnberg

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