Patent ID: 6644121
Filing Date: 2003-11-11
Classification: G01B,G01N

Abstract:
An improvement in an on-line measurement system for product formed in a continuous manner, which includes:means for receiving a first waveform signal indicative of a presence of an indicia of a first wall side of the product and a second waveform signal indicative of a presence of an indicia of a second wall side of the product; means for shifting phase of each said first waveform signal and said second waveform signal by a predetermined amount to produce a respective first transformed waveform signal and a second transformed waveform signal; and means for combining said first waveform signal and said first transformed waveform signal in manner to produce a first rectified waveform having an increasingly defined peak and for combining said second waveform signal and said second transformed waveform signal in manner to produce a second rectified waveform having an increasingly defined peak, wherein said peaks are useful the on-line measurement system for defining an indicia of a wall thickness between said first wall side and said second wall side of the product.