Simplified inductive position sensor and circuit configuration
US7135855B2 · kind B2 · utility
11Cited by
18References
14Claims
0Family size
Inventor
Key dates
| Filing date | May 17, 2004 |
| Grant date | Nov 14, 2006 |
| Priority date | — |
| Expiry date | Sep 11, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D5/2216
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Inductive position sensors and circuit configurations are disclosed for the measurement of linear, rotary, or curved position along a motion axis. The simplified sensor structures combine one or two parts of a movable core element with a simple planar substrate having first and second inductances connected in series. Movement of the core element in parallel to the planar substrate causing the impedance of at least one of the inductances to change. Simple circuit configurations are taught by which the impedance change is converted into a useful output signal that indicates position along the motion axis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.