G - Physics – 01 – P
Patent
G - Physics
01
P
354/25
G01P 3/80 (2006.01) G06F 17/15 (2006.01)
Patent
CA 1223071
ABSTRACT OF THE DISCLOSURE The device according to the invention comprises: - n independent delayed lines, which are connected in parallel are provided for receiving said first signal at said first point, n being equal or greater than two, - samples of said first signal taken at n different sampling frequencies are stored - in said n delayed lines respectively, samples of said second signal are taken in the direct line at one of said n frequencies, and - the correlation function between the samples of the direct line and the samples of one of said n independent delay lines is calculated, said one of said n independent delay lines being determined as a function of the value of the measured delay. The invention finds an application for measuring the speed of a movable object advancing in linear manner, such as for example a web of paper.
477849
Galet Philippe
Henrioux Jean P.
Moisan Eric
Centre National de La Recherche Scientifique
Centre Technique de L'industrie Des Papiers Cartons Et Celluloses (c.t.p.)
Goudreau Gage Dubuc
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