Device and Method for Detecting and Displaying Crossover Pattern in Precision Winding.
Patent Application, filed 16 Apr 90,
DEPARTMENT OF THE ARMY WASHINGTON DC
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In precision winding of fiber, such as optical fiber or natural or synthetic fabric thread, the fiber is wound layer by layer over a tapered cylindrical bobbin. All odd layers are wound in one direction example from left to right and all even layers are wound in the opposite direction i.e. from right to left. The device and method for detecting and displaying crossover pattern in precision winding makes it possible to observe crossover patterns without stopping the winding process. A lag angle detector LAD is used to detect crossover occurring during a winding process. In conjunction with a suitable circuit built of a differentiator, threshold, angle counter, turn counter, status latch and data latch, the information from LAD can be used to display crossover patterns graphically on a computer monitor and enable observation of the patterns without stopping the winding process. The crossover pattern information can be stored in the computer and retrieved at a later time for underlying layers where visual inspection after completion of winding is impossible. Patent applications. jes
- Manufacturing and Industrial Engineering and Control of Production Systems