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Non-contact tension measurement of moving fiber using traveling wave time-of-flight analysis

  • US 5,710,432 A
  • Filed: 01/18/1996
  • Issued: 01/20/1998
  • Est. Priority Date: 01/18/1996
  • Status: Expired due to Term
First Claim
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1. An optical fiber producing apparatus having non-contact fiber tension monitoring, comprising:

  • a traveling wave wavelet transformation processor, responsive to a fiber transverse position processor signal representing information relating to a traveling wave propagating in one direction along a moving fiber and a reflection of the traveling wave propagating back in an opposite direction along the moving fiber, for providing a traveling wave wavelet transformation processor signal; and

    a time-of-flight fiber tension processor, responsive to the traveling wave wavelet transformation processor signal, and further responsive to a fiber draw speed signal, for providing a time-of-flight fiber tension processor signal indicative of a fiber tension of the moving fiber using traveling wave time-of-flight analysis.

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