Method and apparatus for recognizing particle impurities in textile fiber
AssigneeTrutzschler GmbH & Co. KG
InventorsFerdinand Leifeld, Stefan Schlichter, Norbert Tietgen
Life of this patent
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Abstract
A method of recognizing particle impurities in textile material includes the following steps: forming a thin fiber web; detecting each particle impurity by an electron-optical sensor; applying signals from the sensor to an image processing system; determining a specific characteristic for each particle impurity by an evaluating device forming part of the image processing system; classifying the particle impurities based on the specific characteristic by comparison with reference data; and counting the particle impurities.
Claims25
A method of recognizing particle impurities in textile material, including the following steps:
- (a) forming a thin fiber web;
- (b) passing a first light beam through the web;
- (c) reflecting a second light beam from the web;
- (d) positioning a single type of electron-optical sensor such as to receive the transmitted light and the reflected light;
- (e) detecting each particle impurity by the electron-optical sensor;
- (f) applying signals from the sensor to an image processing system;
- (g) determining a specific characteristic for each particle impurity by an evaluating device forming part of the image processing system;
- (h) classifying the particle impurities based on the specific characteristic by comparison with reference data;
- and
- (i) counting the particle impurities.
An apparatus for recognizing particle impurities in textile material, comprising
- (a) a single-type of electron-optical sensor means including a camera for being aimed at the textile material and to generate signals representing an image of the fiber material;
- (b) a support means for supporting the fiber material in an effective range of the camera;
- said support means having opposite first and second sides;
- said camera being disposed at said first side;
- (c) a first light source supported at said first side for providing the camera with light reflected by the fiber material;
- (d) a second light source supported at said second side for providing the camera with light passing through the fiber material;
- (e) an electronic image processing device connected to the camera for determining a specific characteristic for each particle impurity detected by the camera;
- (f) a classifying device connected to the image processing device for classifying particle impurities based on the specific characteristic;
- (g) a counter operatively connected to said camera for counting the particle impurities detected by the camera;
- and
- (h) a computer operatively connected to the camera, the image processing device, the classifying device and the counter.
Dependencies are inferred from the claim text.