Noninvasive mass determination stockpiled materials

Details Noninvasive mass determination stockpiled materials Noninvasive mass determination stockpiled materials

1998-10-16

2000-02-22

Gibson, Randy W.

Weighing scales

Processes

73382R, 73382G, 172 1, 33 1V, 356379, G01G 900, G01M 112, G01B 1100, G01B 1128

Patent

active

060282703

ABSTRACT:
The mass of stockpiled materials is determined from detailed measurements of the elevation of the pile surface at many points and the measurement of the gravitational field along several profile lines across the surface of the stockpiled material. The elevation measurements allow the calculation of the pile volume. Measured gravity values are adjusted using standard gravity corrections in such a manner as to imply all gravity data are collected along the same reference datum. Variations in the corrected gravity values are assumed to be caused solely by the pile material. The gravity measurements are interpreted using analytical and statistical methods to determine the volume-average bulk density value of the pile material. The pile volume is multiplied by the volume-average bulk density to obtain the weight of the stockpiled material.

REFERENCES:
patent: 4399693 (1983-08-01), Gournay
patent: 5001634 (1991-03-01), Nordin
patent: 5218864 (1993-06-01), Pennybaker
patent: 5502898 (1996-04-01), Manore
patent: 5553407 (1996-09-01), Stump

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