Icing detector and method

Details Icing detector and method Icing detector and method

1990-09-26

1992-07-28

Harvey, Jack B.

Electricity: measuring and testing

Impedance, admittance or other quantities representative of...

Lumped type parameters

324663, 324693, 340602, 340580, G01R 2722, G01R 2726

Patent

active

051343800

ABSTRACT:
A device and method for detecting the nature and condition of ice, water or air on a surface by producing output signals by measurement of dynamic dielectric constant and electrical conductivity of the material on the surface and decoding digital signals therefrom to display information as to the condition. More particularly, a sensing apparatus for producing output voltage signals in response to the formation of ice, water or air at a surface and processing a combination of voltage levels as digital signals to decoding circuitry to provide information which is independent of contamination and impurities and of the size and nature of sensor elements.

REFERENCES:
patent: 3882381 (1975-05-01), Gregory
patent: 4135151 (1979-01-01), Rogers et al.
patent: 4333004 (1982-06-01), Forgue et al.
patent: 4468610 (1984-08-01), Hanson
patent: 4522060 (1985-06-01), Murata et al.
patent: 4604612 (1986-08-01), Watkins et al.

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