Electronic bathroom scale apparatus using planar coil sensors

Details Electronic bathroom scale apparatus using planar coil sensors Electronic bathroom scale apparatus using planar coil sensors

1983-05-26

1985-03-12

Goldberg, E. A.

Weighing scales

Self-positioning

Electrical current generating or modifying

177210FP, G01G 314, G01G 316

Patent

active

045039224

ABSTRACT:
An electronic bathroom scale employs a low profile planar coil position sensor which responds to the positioning of a pivotable lever system. The levers are coupled to a platform which moves in the vertical direction as a weight is placed upon the top or supporting platform of the scale. The sensor provides variable amplitude or frequency proportional to the weight on the scale. The output signal is processed so that a direct reading of the weight is displayed by means of a digital display. The circuitry described serves to compensate for the nonlinearity of the transducer while further providing other compensation to eliminate environmental effects such as temperature and other factors from affecting the direct display of weight.

REFERENCES:
patent: 3799281 (1974-03-01), Wernitz
patent: 4042876 (1977-08-01), Visioli, Jr.
patent: 4366875 (1983-01-01), Dauge et al.
patent: 4405025 (1983-09-01), Yanagita et al.
patent: 4425511 (1984-01-01), Brosh
patent: 4458770 (1984-07-01), Bucci

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