Measuring and testing – With fluid pressure – Dimension – shape – or size
Patent
1993-09-15
1994-12-13
Williams, Hezron E.
Measuring and testing
With fluid pressure
Dimension, shape, or size
209509, 356355, 356356, 356 3, 356446, 73 375, 73 81, 73 378, G01B 1102, G01N 310
Patent
active
053720300
ABSTRACT:
A firmness measuring device for non-destructive testing of objects with rough surfaces (such as fruit) is disclosed. The device comprises the following components: a means to generate an impulsive jet of a fluid (such as air) aimed at the surface of the object under test; a laser to generate a beam of coherent light aimed at the area on the surface of the object under test impacted by the fluid jet; a detector to sense the light reflected off of the surface of the object from the laser beam; an analyzer to determine the amount of deformation of the surface caused by the fluid jet based on the input to the detector; and a controller to coordinate the release of the impulsive jet with the analyzer.
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Astleford John J.
Hewlett Bob
Hung Yen-Con
Prussia Stanley E.
The University of Georgia Research Foundation Inc.
Wiggins J. David
Williams Hezron E.
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