Method of optically measuring the surface of yarn packages

Details Method of optically measuring the surface of yarn packages Method of optically measuring the surface of yarn packages

1997-03-24

1998-04-14

Pham, Hoa Q.

Optics: measuring and testing

Inspection of flaws or impurities

Textile inspection

356431, G01N 2100

Patent

active

057399042

ABSTRACT:
A method of optically measuring the surface of yarn packages, wherein the package surface is scanned by a light beam, and the reflected light signal is evaluated. The light beam scans the package surface along a predefined path. At each predetermined measuring time, the light beam is directed to a scanning spot of the package surface, and the two plane coordinates of the scanning spot are determined. A portion of the light rays diffused from the scanning spot is focused and directed to a sensor, so that they arrive at the sensor in one point of incidence. The actual position of the point of incidence is measured, and from the difference between the actual position of the point of incidence and the desired point of incidence, the actual third, i.e. elevation, coordinate of the scanning spot may be determined.

REFERENCES:
patent: 3667846 (1972-06-01), Nater et al.
patent: 4589773 (1986-05-01), Ido et al.
patent: 4866289 (1989-09-01), Kawamura et al.
patent: 5138151 (1992-08-01), Inada et al.
patent: 5224172 (1993-06-01), Masai
patent: 5315366 (1994-05-01), Inada et al.
Denfensive Publication, "Radiation Sensitive Apparatus for Detecting Rotating Yarn Package Defects", G.I. Buckson et al, published Apr. 29, 1969, 4 pages.
Barmag Electronic brochure; dated Feb. 2, 1994; 2 pages.
Barmag Electronic brochure; dated Feb. 15, 1994; 2 pages.
Automatic Package Analysis; Lawson-Hemphill Sales, Inc.; 2 page brochure.
"Triangulationssensor zur hochgenauen Messwertaufnahme an technischen Oberflachen"; Sensor 93 Kongressband III; P. Pfeifer, P. Sowa; Fraunhofer-Institut fur Produktionstechnologie IPT, pp. 227-235.
Barmag, "Automatic Package Inspection"; Subheading: Detection of Sloughs; Documentation: Introduction of the Measuring Technique; Proof of Feasibility; Second draft; Copyright G. Berger, Jul. 11, 1994; pp. 1-32.

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