Radiant energy – Photocells; circuits and apparatus – With circuit for evaluating a web – strand – strip – or sheet
Patent
1995-04-11
1996-08-27
Allen, Stephone
Radiant energy
Photocells; circuits and apparatus
With circuit for evaluating a web, strand, strip, or sheet
25055946, 356429, G01N 2186
Patent
active
055503845
ABSTRACT:
An apparatus and method for scanning a carpet is used for detecting tuft defects in the carpet during manufacture. The apparatus or system incorporates a light source for providing light along a width of the carpet; a scanning array for detecting light from the light source passing through the carpet; and control circuit means for controlling the sensor array to scan the carpet and for receiving the output signals from the first and second sensor cells detecting tuft defects in the carpet based on the light passing through the carpet. The scanning array has at least one pair of first and second sensor cells, and is positioned opposite the light source with the carpet passing transversely therebetween. Each of the first and second sensor cells includes first and second sets of sensor elements, and an output node between the first and second sets of sensor elements. The output node outputs a signal detecting tuft defects in the carpet based on an amount of light passing through the carpet. The first set of sensor elements of the second sensor cell is positioned adjacent the first set of the first sensor cell, the second set of the first sensor cell is positioned adjacent the first set of the second sensor cell, and the second set of the second sensor cell is positioned adjacent the second set of the first sensor cell.
REFERENCES:
patent: 3188478 (1965-06-01), Binks
patent: 3589816 (1971-06-01), Sugaya
patent: 3835332 (1974-09-01), Bridges
patent: 3859538 (1975-01-01), Mannonen
patent: 3877821 (1975-04-01), Price et al.
patent: 4591726 (1986-05-01), Schenk
Allen Stephone
Appalachian Electronic Instruments, Inc.
LandOfFree
Method and apparatus of automatically scanning for density defec does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus of automatically scanning for density defec, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus of automatically scanning for density defec will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1057746