G - Physics – 01 – C
Patent
G - Physics
01
C
G01C 7/04 (2006.01) E01C 23/01 (2006.01) G01S 5/14 (2006.01)
Patent
CA 2569494
A virtual profilograph is disclosed that can provide measurements indicative of the ride quality of a roadway as the road is being constructed. As a result, a more timely, less costly indication of the ride quality of a roadway is obtained as compared to prior methods. In a first embodiment a Global Navigation Satellite System antenna is attached to a vehicle. When the vehicle travels over a roadway, measurements of the position of the antenna are recorded at different times. A profile of the roadway is created by measuring the elevation of the antenna as a function of the distance traveled from a starting point. In another embodiment, tilt sensors are used to measure the slope of the roadway and the tilt of the vehicle so that a precise orientation of the vehicle and, hence, the contours of the roadway, can be determined.
Kirby Eades Gale Baker
Topcon Positioning Systems Inc.
LandOfFree
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