On-Line Volume Measurement Of Bulk Materials

J. F. Claridge; D. J. Purll

doi:10.1117/12.956596

1 January 1978 On-Line Volume Measurement Of Bulk Materials

J. F. Claridge, D. J. Purll

Proceedings Volume 0145, Industrial Applications of Solid State Image Scanners; (1978) https://doi.org/10.1117/12.956596
Event: Industrial Applications of Solid State Image Scanners, 1978, London, United States

Abstract

The authors will describe a technique initially developed for automatic inspection and gauging of extruded products which has more recently been applied to on-line volume measure-ment of bulk materials carried on conveyor belts. The technique involves a light-sectioning optical system in which a straight edge of light is projected across the direction of flow. When viewed from a different angle, this edge is seen to follow the external profile of the material, and this view is imaged onto a two-dimensional photodiode array. Processing of the array output signal with an electronic system including a microprocessor enables the instantaneous cross-sectional area of the load to be computed, since the underside profile formed by the empty conveyor belt is known. Integration of these measurements over a given length of conveyor movement yields a measurement which is proportional to volume.

Citation Download Citation

J. F. Claridge and D. J. Purll "On-Line Volume Measurement Of Bulk Materials", Proc. SPIE 0145, Industrial Applications of Solid State Image Scanners, (1 January 1978); https://doi.org/10.1117/12.956596

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