Patent · US Active

Method for contactless determination of electrical potential using oscillating electrode, and device

US9121878B2 · kind B2 · utility

0Cited by

3References

8Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Jens Makuth · Feucht, DE
Dirk Scheibner · Nuremberg, DE
Jürgen Schimmer · Koblenzer Straße, DE

Key dates

Filing date	Apr 14, 2011
Grant date	Sep 1, 2015
Priority date	—
Expiry date	Aug 29, 2031

Classification

Technology area (CPC G)Physics
CPC primaryG01R29/12
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

The electrical potential of an object is determined by providing a mechanically oscillating electrode located at a distance from the object and making the electrode mechanically oscillate. A change in a state of electric charge of the electrode over time and amplitudes of at least two frequency components during the change in the state of electric charge over time are determined. Based on the amplitudes, at least one parameter that forms part of the value of a capacitance of an arrangement formed by the electrode and the object is determined, so that the capacitance of the arrangement formed by the electrode and object can be determined based on the parameter. Finally, the electrical potential is determined from the change in the state of electric charge and the capacitance.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.