Methods providing enhanced material thickness sensing with capacitive sensors using inductance-generated resonance and related devices
US11614317B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jun 19, 2020 |
| Grant date | Mar 28, 2023 |
| Priority date | — |
| Expiry date | Mar 16, 2041 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60C2019/004
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
Methods of measuring a thickness of a material are disclosed. An oscillating signal at a measurement frequency is applied to a circuit including an inductive component and a capacitive component provided using a pair of capacitive sensor electrodes adjacent the material. The measurement frequency is less than a resonant frequency of the circuit, and the resonant frequency is based on the inductive component and the capacitive component. Information regarding a value of a measured parameter is generated based on applying the oscillating signal at the measurement frequency to the circuit. A value of the measured parameter is related to the thickness of the material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.