Apparatus and method for detecting contaminants in textile produ

Details Apparatus and method for detecting contaminants in textile produ Apparatus and method for detecting contaminants in textile produ

1993-01-13

1995-01-17

Rosenberger, Richard A.

Optics: measuring and testing

Inspection of flaws or impurities

Textile inspection

356430, G01B 902

Patent

active

053830172

ABSTRACT:
For the detection of the presence of contaminants in yarn a first optical sensor is used to measure the amount of light reflected from the yarn. The signal from this sensor not only depends on the presence of contaminants but also on the diameter of the yarn. For eliminating the dependence on the yarn's diameter, a second signal is recorded, which depends essentially only on the yarn's diameter. By appropriate combination of these two signals in a microprocessor system the influence of the yarn's diameter in the first signal can be eliminated.

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patent: 4963757 (1990-10-01), Liefde et al.
patent: 5054317 (1991-10-01), Laubscher
patent: 5182457 (1993-01-01), Hagmann

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