G - Physics – 01 – C
Patent
G - Physics
01
C
G01C 7/04 (2006.01) E01C 23/01 (2006.01)
Patent
CA 2098321
2098321 9210720 PCTABS00013 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 of the drivable unit in and transversely of the direction of travel, and an angular-velocity gyro with its measuring direction in the vertical direction. According to the invention, the acceleration/retardation in the direction of travel of the vehicle, the velocity and the covered road stretch are measured by a pulse means provided in a non-driving 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.
Arnberg Peter W.
Ostergren Roland
Scandiaconsult Bygg & Mark Ab
Sim & Mcburney
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