Systems and methods for detecting physical changes without physical contact
US11026593B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 8, 2018 |
| Grant date | Jun 8, 2021 |
| Priority date | — |
| Expiry date | Aug 8, 2038 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/7225
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Systems and methods are provided for detecting and analyzing changes in a body. For example, a system includes an electric field generator configured to produce an electric field. The system includes an external sensor device configured to detect physical changes in the electric field, where the physical changes affect amplitude and frequency of the electric field. The system includes a quadrature demodulator configured to detect changes of the frequency of the output of the electric field generator. The system includes an amplitude reference source and an amplitude comparison switch configured to detect changes of the amplitude of the output of the electric field generator. The system includes a signal processor configured to analyze the changes of the amplitude and frequency of the output of the electric field generator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.