Electronic weighing scale
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United States of America Patent
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-
Nov 5, 1991
Grant Date -
N/A
app pub date -
Feb 16, 1990
filing date -
Feb 18, 1989
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An electronic weighing scale is adapted to determine the weight of an object. A weight signal is generated having a direct current component indicative of the weight of the object and a superposed periodic oscillatory component. The period T.sub.1 of the periodic oscillatory component of the weight signal is determined. The weight signal is sampled at sampling intervals T.sub.2, having a relationship to period T.sub.1 defined by: nT.sub.1 =NT.sub.2 ; and N.gtoreq.2n where n and N are positive integers, n being the number of cycles of the periodic oscillatory component during which the samples takes place, and N being the number of samples taken. The samples of the weight signal are averaged and the weight of the object is determined based on the averaged samples.
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