Dielectric detecting device

Details Dielectric detecting device Dielectric detecting device

1993-04-21

1995-08-29

Regan, Maura K.

Electricity: measuring and testing

Impedance, admittance or other quantities representative of...

Lumped type parameters

340562, G01R 2726

Patent

active

054463912

ABSTRACT:
A dielectric detecting device includes an earth electrode and a sensor electrode opposed to the earth electrode which constitute a capacitor whose capacitance is varied with an existence of a dielectric object therebetween. A detecting device is provided for detecting a change in the capacitance of the capacitor and a capacitance of a circuit in the dielectric detecting device. The detecting device includes an input signal processing device disposed between an output side of the detecting device and an input side of the sensor electrode, a switching device disposed between the input signal processing device and the sensor electrode, and a judging device for judging whether the dielectric object exists or not on the basis of an output of the detecting device and judging whether an error has occurred at one or more of the earth electrode, the sensor electrode, the detecting device and input signal processing device on the basis of capacitances when the switching device is in its on and off conditions.

REFERENCES:
patent: 4370611 (1983-01-01), Gregory et al.
patent: 4433286 (1984-02-01), Capots et al.
patent: 4796013 (1989-01-01), Yasuda et al.
Patent Abstracts of Japan P-1298, Jan. 14, 1992, vol. 15, No. 15 (Abstract for JP 3-233391).

Affiliated with

Also associated with

Rating

Dielectric detecting device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Dielectric detecting device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dielectric detecting device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1822165