Device for measuring a transverse dimension of a thread-like str

Details Device for measuring a transverse dimension of a thread-like str Device for measuring a transverse dimension of a thread-like str

1979-11-26

1981-12-22

Punter, William H.

Optics: measuring and testing

By configuration comparison

With photosensitive film or plate

356429, G01B 1110, G01B 1102

Patent

active

043068120

ABSTRACT:
A device for measuring the instantaneous value of the diameter or other transverse dimension of a traveling yarn comprises a linear array of photoelectric sensors and an electronic measuring device for digitally processing the electric signals furnished by the sensors in parallel form. A ground signal is taken with no yarn present and stored in the measuring device, and a measuring signal is taken with yarn present. The measuring device comprises logic circuitry for subtracting the stored ground signal from the measuring signal such as to eliminate the ground signal and to furnish a pure yarn signal representative of the yarn diameter.

REFERENCES:
patent: 3894803 (1975-07-01), McLean et al.
patent: 4162052 (1979-07-01), Lamelot
patent: 4173788 (1979-11-01), Laliotis

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