A beam of light is transmitted from a transmitter (30) which is broken as the moving fiber (22) passes through the beam. A receiver (32) receives the light and generates a signal in response thereto. The signal is processed to determine the status of the pattern generated by the moving fiber (22) of...http://www.google.es/patents/US5208064?utm_source=gb-gplus-sharePatente US5208064 - Method and apparatus for optically monitoring and controlling a moving fiber of material
Method and apparatus for optically monitoring and controlling a moving fiber ...
