Method and device for correcting the output signal from a digita

Details Method and device for correcting the output signal from a digita Method and device for correcting the output signal from a digita

1976-07-28

1977-12-06

Ruehl, Charles A.

Measuring and testing

Volume or rate of flow

System

235 92FL, 73229, G01F 105

Patent

active

040610306

ABSTRACT:
A method and circuit is provided for correcting an output signal pulse train received from a digital transducer representing a physical magnitude. In a graph the relationship of pulse frequency versus said magnitude will be illustrated by a straight line which will not, due to various influences, intersect the origin of the graph but will pass on either side thereof. By superimposing (adding or subtracting) correction pulses on the transducer pulses, said line is displaced and caused to intersect the origin, said relationship thus being changed to a directly proportional one. Conditions for proper superimposition are defined and an electronic circuit for fulfilling the conditions in a simple and reliable way is disclosed.

REFERENCES:
patent: 3425274 (1969-02-01), Clement et al.
patent: 3566685 (1971-03-01), Zimmerman et al.
patent: 3605497 (1971-09-01), Zimmerman et al.
patent: 3705295 (1972-12-01), Betz

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