Automatic zero-adjustment method and apparatus

Details Automatic zero-adjustment method and apparatus Automatic zero-adjustment method and apparatus

1984-04-27

1987-04-28

Lall, Parshotam S.

Boots, shoes, and leggings

177DIG3, 177164, 364567, G01G 1952, G06F 1102

Patent

active

046619208

ABSTRACT:
A method and apparatus for automatically adjusting the zero point of a weighing machine includes producing, in the form of a digital value, an initial zero-point correction value when the weighing machine is free of a load. The difference value between an unloaded weight value, which is produced by the unloaded weighing machine, and a value obtained by converting the digital value into an analog value, is calculated. The difference value is compared with a preset value, and digital values are sequentially converted in accordance with the result of the comparison operation to render the difference value equal, or nearly equal, to the preset value.

REFERENCES:
patent: 3916173 (1975-10-01), Williams et al.
patent: 4155411 (1979-05-01), Weaver
patent: 4241407 (1980-12-01), Sookikian et al.
patent: 4316516 (1982-02-01), Kupper
patent: 4316517 (1982-02-01), Jonath
patent: 4316518 (1982-02-01), Jonath
patent: 4417631 (1983-11-01), Johnson

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