Process for contactless measurement of the electrical resistance

Details Process for contactless measurement of the electrical resistance Process for contactless measurement of the electrical resistance

1991-04-11

1993-05-11

Harvey, Jack B.

Electricity: measuring and testing

Impedance, admittance or other quantities representative of...

Lumped type parameters

324664, 324674, 324693, 324707, G01R 2726

Patent

active

052105008

ABSTRACT:
Process for contactless measurement of the electrical resistance (or of the electrical conductivity) of a preferably flat material (test material) in which an alternating current is capacitively coupled into the test material with the help of two coupling electrodes. The total impedance is measured at at least three different frequencies, and from that measurement, the stray capacitance between the two coupling electrodes, the coupling capacitance between the two coupling electrodes and the test material, as well as the resistance of the test material are determined. In a preferred embodiment the process is used for controlling the windshield wipers of a motor vehicle.

REFERENCES:
patent: 3408566 (1968-10-01), Norwich
patent: 3774238 (1973-11-01), Hardway, Jr.
patent: 3781672 (1973-12-01), Maltby et al.
patent: 3796950 (1974-03-01), Kuecken
patent: 3826979 (1974-07-01), Steinmann
patent: 3882381 (1975-05-01), Gregory
patent: 3967191 (1976-06-01), Roche
patent: 3988669 (1976-10-01), Fasching
patent: 4451780 (1984-05-01), Ogasawara
patent: 4523142 (1985-06-01), Murata et al.
patent: 4554493 (1985-11-01), Armstrong
patent: 4924172 (1990-05-01), Holmagren
patent: 4968947 (1990-11-01), Thorn

Affiliated with

Also associated with

Rating

Process for contactless measurement of the electrical resistance does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for contactless measurement of the electrical resistance, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for contactless measurement of the electrical resistance will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1353933