Systems and methods for detection of dielectric change in material and structure
US7288945B2 · kind B2 · utility
21Cited by
9References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 11, 2005 |
| Grant date | Oct 30, 2007 |
| Priority date | — |
| Expiry date | Aug 11, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K17/955
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Methods and systems are described for efficiently detecting an object. The system includes at least one electrode for measuring a displacement current. The at least one electrode is coupled to a floating ground configuration provided by an op-amp, where the inverting node of the op-amp is coupled to electrode and the non-inverting node is coupled to a signal generator. The system may include a single capacitance sensor for detecting an object. Systems may include a plurality of capacitance sensors in an array configuration for detecting an object.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.