Surrounding state measuring apparatus utilizing an impedance ele

Details Surrounding state measuring apparatus utilizing an impedance ele Surrounding state measuring apparatus utilizing an impedance ele

1995-06-05

1997-08-12

Wieder, Kenneth A.

Electricity: measuring and testing

Determining nonelectric properties by measuring electric...

324693, 324705, 324712, 7333502, 7333505, 364557, G01N 2702

Patent

active

056569289

ABSTRACT:
Measuring apparatus includes a first element having its impedance dependant on the state of its surroundings and a second element having a variable impedance connected to the first element. A voltage at the connection point between the first and second elements is converted into a digital value and the impedance of the second element is set based on the converted digital value. The surrounding state (e.g., humidity) is determined based on the converted digital value.

REFERENCES:
patent: 2873607 (1959-02-01), Van Kuyk
patent: 3713337 (1973-01-01), Stroman
patent: 4161880 (1979-07-01), Prosky
patent: 4216675 (1980-08-01), Nagata et al.
patent: 4362988 (1982-12-01), Weimer
patent: 4369661 (1983-01-01), Gibb
patent: 4816748 (1989-03-01), Tazawa et al.
patent: 4844788 (1989-07-01), Takahashi et al.
patent: 5027077 (1991-06-01), Yanagisawa et al.
patent: 5105294 (1992-04-01), Degura et al.
patent: 5113278 (1992-05-01), Degura et al.
patent: 5519325 (1996-05-01), Park
Patent Abstracts of Japan, Publ. No. JP62062230, vol. 011256, "A/D Converter for Photometer Adapted Measure Light About Multiple Pieces of Information", Shuji et al. (Aug. 20, 1987).

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