Measurement Of Velocity With Cross-Correlation Technique For An Industrial Application

F Francini; G Longobardi; R Bottos; F Grego

doi:10.1117/12.938286

17 November 1986 Measurement Of Velocity With Cross-Correlation Technique For An Industrial Application

F Francini, G Longobardi, R Bottos, F Grego

Proceedings Volume 0654, Automatic Optical Inspection; (1986) https://doi.org/10.1117/12.938286
Event: 1986 International Symposium/Innsbruck, 1986, Innsbruck, Austria

Abstract

In the process of continuous spinning it is particulary important the measurement of the velocity of textile fibers: in fact the uniformity, smoothness and tenacity of the yarn depend on the velocity of the fibers at the moment they reach the twisting organ and on the average number of the collected fibers. It is important that the applied tecnique should not affect the flow. An electro-optical system is described for the measurement of the velocity of fibers ( 20 mm long, 25 μm diameter) suspended in an airflow. The samples are carried along by the surrounding medium in a duct that has two windows (one for lighting, the other for viewing). A cross correlation of the detectors output is carried on to obtain the velocity and density of the fibers.

Citation Download Citation

F Francini, G Longobardi, R Bottos, and F Grego "Measurement Of Velocity With Cross-Correlation Technique For An Industrial Application", Proc. SPIE 0654, Automatic Optical Inspection, (17 November 1986); https://doi.org/10.1117/12.938286

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