Optical imaging system for fabric seam detection

Details Optical imaging system for fabric seam detection Optical imaging system for fabric seam detection

1991-03-13

1992-09-22

Rosenberger, Richard A.

Optics: measuring and testing

By monitoring of webs or thread

250559, 356238, G01N 2186

Patent

active

051501759

ABSTRACT:
A non-contacting optical imaging system for seam or other periodic pattern detection for a web of material such as a strip of fabric is disclosed in which a line scan camera is used to capture a seam or other periodic pattern image and the electrical output from the camera is converted to an alternating current signal and then to a direct current signal which is proportional to the presence or absence of a seam other periodic pattern. The DC signal is integrated and then compared to a preset reference value to produce a signal for driving an alarm, display or machine control devices.

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