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US 2019/0195853 A1Published application
Method and system for yarn quality monitoring
OwnerPetr PERNER, Ondrej Zelinka +1inventors
InventorsPetr PERNER, Ondrej Zelinka, Josef Suska
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Abstract
There is disclosed a method and an apparatus for monitoring textile yarn quality. Textile yarn is checked for quality to meet the required criteria such as diameter evenness and unwanted foreign fiber presence by utilizing an artificial diffuse light illuminating image sensor, with the yarn placed as an obstacle, into the pathway of the light, the contours of the light being focused for sharp image capture. The yarn diameter is determined by processing of focused yarn image.
Claims17
An yarn quality monitoring device, comprising:
- a primary light source for emitting light, the light propagation defining an optical path;
- a diffuser proximate to the first light source for diffusing the emitted light;
- an image sensor illuminated by the diffused light emitted from the primary light source, for capturing a yarn contour image from illumination of a moving yarn in the optical path;
- a focusing element in the optical path between the first light source and the image sensor, for focusing the yarn contour image on the image sensor;
- and
- a controller in communication with the image sensor for processing the captured yarn contour image, to determine yarn diameter.
3 more elements
A method of yarn quality monitoring comprising:
- illuminating an image sensor with light from a primary light source configured for creating a contour image of a yarn on the image sensor, the primary light source diffused by a diffuser and focused by a focusing element, on an image sensor, the primary light source, diffuser and focusing element aligned to define an optical path;
- obtaining a contour image of the yarn by the image sensor, the moving yarn positioned in the optical path between the primary light source and the image sensor;
- and
- processing the yarn contour image to obtain a yarn diameter.
1 more element
Dependencies are inferred from the claim text.