Position sensing apparatus and method
US11555940B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 30, 2019 |
| Grant date | Jan 17, 2023 |
| Priority date | — |
| Expiry date | Oct 7, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D2205/50
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Inductive position sensors for sensing relative position (e.g., relative rotary position) between members are provided. In one example implementation, the inductive position sensor includes a transmit aerial having at least one transmit winding. The inductive position sensor can include a receive aerial having one or more receive windings. The inductive position sensor can include a coupling element operable to be disposed on the second member. The inductive position sensor can include processing circuitry configured to provide one or more signals indicative of the position of the first member relative to the second member based on current induced in the one or more receive windings resulting from an oscillating signal provided to the transmit winding. The inductive position sensor includes at least one electrostatic shield. The electrostatic shield can include a plurality of conductive traces arranged so that no current loops are formed in the electrostatic shield.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.