Device for measuring the transverse dimension of a thread

Details Device for measuring the transverse dimension of a thread Device for measuring the transverse dimension of a thread

1982-09-10

1985-04-16

Evans, F. L.

Optics: measuring and testing

By configuration comparison

With photosensitive film or plate

250560, 356429, G01B 1110, G01B 1102

Patent

active

045112533

ABSTRACT:
A device for measuring the transverse dimension, such as the diameter of a textile thread, comprises a light source, a linear array of optoelectrical sensors, a clock for periodically scanning the linear array, and electronic circuitry for evaluating the serial signals furnished by the linear array. The electronic circuitry comprises amplifying means, a limiter such as a Schmitt-trigger, and means for integrating the pulse amplitudes furnished by the linear array over a plurality of scanning periods or cycles. Further, means are provided for automatically controlling the response of the electronic circuitry in inverse proportion to the averaged output of the integrating means.

REFERENCES:
patent: 4294545 (1981-10-01), Stutz
patent: 4306812 (1981-12-01), Lapp et al.

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