Detecting apparatus using a digital computer

Details Detecting apparatus using a digital computer Detecting apparatus using a digital computer

1981-12-10

1984-10-23

Thomas, James D.

Boots, shoes, and leggings

364571, 364505, G05B 106

Patent

active

044791909

ABSTRACT:
A detecting apparatus for compensating for changes in supply voltage to a physical parameter sensor. The apparatus includes an input element, such as a heatsensitive resistor connected to a voltage source to produce a voltage signal (C.sub.S) corresponding to a physical factor, e.g., a temperature. A constant voltage circuit or a voltage divider connected to the same voltage source as the input element produces a reference voltage signal (C.sub.R) corresponding to a predetermined reference value of the input element. Both voltage signals (C.sub.S, C.sub.R) are applied to a microcomputer in which a correction value (C.sub.C) is calculated on the basis of the both voltage signals (C.sub.S, C.sub.R) and a theoretical set value (C.sub.O) of the reference voltage signal (C.sub.R). The detected physical factor by the input element is corrected by the correction value (C.sub.C).

REFERENCES:
patent: 4198676 (1980-04-01), Varnum et al.
patent: 4340882 (1982-07-01), Maio et al.
patent: 4369352 (1983-01-01), Bowles

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