Weighing scales – Computer – Electrical
Patent
1996-07-25
1998-08-04
Gellner, Michael L.
Weighing scales
Computer
Electrical
177185, G01G 300
Patent
active
057897131
ABSTRACT:
A weighing method and apparatus includes a weighing cell for weighing an article and outputting a weighing signal corresponding to the weight thereof and a floor vibration detecting cell for detecting vibration of a floor on which the weighing cell is installed and for outputting a floor vibration detection signal. The weighing signal and the floor vibration detection signal are selectively sampled at a predetermined sampling frequency and an A/D converter converts each of the sampled signals into a digital weighing signal or a digital floor vibration detection signal, respectively. A first digital filter filters the digital weighing signal and a second digital filter filters the digital floor vibration detection signal. A floor vibration compensator subtracts the filtered digital floor vibration detection signal from the filtered digital weighing signal and outputs a floor vibration compensated signal wherein an error of the weighing signal caused by the floor vibration is compensated for. A phase corrector nullifies a phase difference, caused by a difference in the times at which the weighing signal and the floor vibration detection signal are sampled, by applying a suitable correction, corresponding to the phase difference, to the weighing signal or the floor vibration detection signal before or after filtering.
REFERENCES:
patent: 4212361 (1980-07-01), Stocker
patent: 4593778 (1986-06-01), Konishi et al.
patent: 4624331 (1986-11-01), Naito
patent: 4751973 (1988-06-01), Freeman et al.
patent: 4926359 (1990-05-01), Konishi et al.
patent: 5117929 (1992-06-01), Nakamura et al.
patent: 5436858 (1995-07-01), Staver
patent: 5440077 (1995-08-01), Konishi et al.
patent: 5627746 (1997-05-01), Ziegler, Jr. et al.
patent: 5650951 (1997-07-01), Staver
Patent Abstracts of Japan, vol. 009, No. 054 (P-340), 8 Mar. 1985, & JP 59 190628 A (Ishida Kouki Seisakusho:KK), 29 Oct. 1984, *abstract*.
Tajiri Shoko
Wakasa Yukio
Gellner Michael L.
Gibson Randy W.
Ishida Co. Ltd.
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