Detection of a dielectric object
First Claim
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, andwherein 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.
1 Assignment
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Accused Products
Abstract
A measuring apparatus for detecting a dielectric object comprises a potential probe for determining an electric potential in an electric field, a first capacitance device, a second capacitance device, and a control device configured to supply alternating voltages to the first and the second capacitance devices. The control device is configured to amplify the alternating voltages in opposite directions to one another in order to minimize the magnitude of an AC voltage component, which is clock-synchronous with the alternating voltages, of a voltage which is recorded by means of the potential probe. The dielectric object is detected 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.
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Citations
11 Claims
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1. A measuring device for detecting a dielectric object, comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for detecting a dielectric object comprising:
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determining an electrical potential in an electric field by means of a potential probe; supplying a first capacitance device and a second capacitance device with alternating voltages which are amplified in opposite directions in such a way that the magnitude of an alternating voltage component, which is clock-synchronous with the alternating voltages, of the determined electrical potential is minimized; and detecting 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.
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11. A non-transitory computer-readable storage medium comprising:
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programmed instructions configured to be executed by a processing device and to cause the processing device to perform a method of detecting a dielectric object, wherein the method includes (i) determining an electrical potential in an electric field by means of a potential probe, (ii) supplying a first capacitance device and a second capacitance device with alternating voltages which are amplified in opposite directions in such a way that the magnitude of an alternating voltage component, which is clock-synchronous with the alternating voltages, of the determined electrical potential is minimized, and (iii) detecting the dielectric object when a ratio of the alternating voltages does not correspond to a ratio of a first distance of the potential probe from the first capacitance device to a second distance of the potential probe from the second capacitance device.
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Specification