| CPC G01C 9/06 (2013.01) [G01C 2009/066 (2013.01); G01S 17/08 (2013.01)] | 17 Claims |
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1. A device for measuring a 3-dimensional slope of a surface, the device comprising:
a tilt sensor;
three distance sensors coupled to the tilt sensor, wherein each one of the distance sensors is coupled to a center point of the device and extends from the center point away from the other distance sensors such that the three distance sensors are configured at an angle relative to each other, and wherein the angle between the distance sensors is between 40 and 70 degrees;
a device centerline extending from the device to the surface; and
a processor configured for calculating the slope of the surface based on measurements provided by the tilt sensor and the three distance sensors,
wherein each of the three distance sensors is aimed downward at the surface.
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