Calibrating passive LC sensor
US11864919B1 · kind B1 · utility
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32References
5Claims
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Key dates
| Filing date | Feb 23, 2022 |
| Grant date | Jan 9, 2024 |
| Priority date | — |
| Expiry date | Jul 2, 2042 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2560/0247
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A flexible, passive pressure sensor includes three LC tank circuits. The first LC tank circuit is a pressure sensing LC tank circuit, having a capacitance that varies in response to changes in environmental pressure. The second and third LC tank circuits are reference LC tank circuits, having capacitances that are relatively constant over changes in environmental pressure. A measurement tool measures the resonant frequencies of the three LC tank circuits and then computes a pressure measurement that accounts for changes in resonant frequencies in the LC tank circuits due to environmental effects and deforming.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.