Patent ID: 9310454
Filing Date: 2016-04-12
CPC Classification: G01R,H03K

Claim Text:
1. A measuring device for detecting a dielectric object, comprising: a potential probe configured to determine an electrical potential in an electric field; a first capacitance device; a second capacitance device; a control device configured to supply the first capacitance device and the second capacitance device with alternating voltages, wherein the control device is configured to amplify the alternating voltages in opposite directions to one another in order to minimize the magnitude of an alternating voltage component, which is clock-synchronous with the alternating voltages, of a voltage which is recorded by means of the potential probe, and wherein the control device is further configured to detect the dielectric object when a ratio of the alternating voltages does not correspond to a ratio of (i) a first distance of the potential probe from the first capacitance device to (ii) a second distance of the potential probe from the second capacitance device.