Abstract: A method for dynamic and non-contact measurement of the displacement of a conductive substance with respect to a capacitive sensor formed by two parallel conductive plates, superimposed, electrically insulated from one another, and fed by a high frequency signal having a predetermined voltage, the capacitive sensor being connected to a device for detecting a current value. Also disclosed is a method for dynamic and non-contact measurement of the permittivity of a dielectric substance between a conductive part and a capacitive sensor of the above-mentioned type.
Type:
Grant
Filed:
August 24, 1998
Date of Patent:
November 23, 1999
Assignee:
Hydro Quebec
Inventors:
Marius Cloutier, Sylvain Savard, Jean Marc Bourgeois, Fran.cedilla.ois Lalonde