Calibrating passive LC sensor
US11284840B1 · kind B1 · utility
2Cited by
32References
24Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 28, 2017 |
| Grant date | Mar 29, 2022 |
| Priority date | — |
| Expiry date | Jun 22, 2039 |
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.