Drivable slope-sensitive unit for measuring curvature and crossf

Details Drivable slope-sensitive unit for measuring curvature and crossf Drivable slope-sensitive unit for measuring curvature and crossf

1993-06-10

1995-08-15

Chilcot, Jr., Richard E.

Measuring and testing

Tire, tread or roadway

Tire inflation testing installation

33521, 33341, 33366, G01B 700

Patent

active

054409233

ABSTRACT:
A method and an apparatus for measuring the curvature and the slope of ground surfaces in two different directions are disclosed. Use is made of a drivable slope-sensitive unit which emits electric signals relating to the crossfall, the hilliness, the horizontal curvature, and the covered road stretch and/or the velocity, by means of two electronic angle sensors for measuring the inclination in the vertical direction. According to the invention, the acceleration or deceleration in the direction of travel of the vehicle, the velocity, and the covered road stretch are measured by a pulse means provided in a nondriving wheel of the drivable unit and by a velocity measuring unit, the inclination of the vehicle relative to the plane through its ruts and or relative to the plane of the roadway is measured by laser ranging units, and a continuous zero-point monitoring and calibration, respectively, of the angular-velocity gyro are performed by a compass.

REFERENCES:
patent: 3797124 (1974-03-01), Easterling et al.
patent: 4653316 (1987-03-01), Fukuhara
patent: 4674327 (1987-06-01), Swindall et al.
patent: 4741207 (1988-05-01), Spangler
patent: 4896964 (1990-01-01), Kitazume
patent: 4899296 (1990-02-01), Khattak

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