Weighing balance with automatic zero correction

Details Weighing balance with automatic zero correction Weighing balance with automatic zero correction

1980-10-09

1982-02-23

Miller, Jr., George H.

Weighing scales

Computer

Electrical

177 50, 177185, 177DIG3, G01G 1904, G01G 1952, G01G 2310

Patent

active

043165168

ABSTRACT:
When the difference between the weight proportional signal and the tare value is less than a predetermined threshold value, it is assumed that the zero point is changing. Main difference signals less than the threshold signal are stored and subsequently generated ones algebraically added to the first one. The so-created cumulative difference signal is compared to a predetermined limiting value. When it exceeds the limiting value the cumulative difference signal is divided by the number of differences which together created the cumulative difference signal. The so-formed average difference signal is added to the tare value prior to generation of the next main difference signal.

REFERENCES:
patent: 3665169 (1972-05-01), Henderson et al.
patent: 3786884 (1974-01-01), Allenspach
patent: 3797595 (1974-03-01), Yin et al.
patent: 3860802 (1975-01-01), Knothe et al.
patent: 3986012 (1976-10-01), Loshbough et al.
patent: 4044846 (1977-08-01), Matilainen
patent: 4137979 (1979-02-01), Itani

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