Inductive sensor device
US10928223B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 7, 2017 |
| Grant date | Feb 23, 2021 |
| Priority date | — |
| Expiry date | Sep 7, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D5/2497
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An inductive sensor device (23) having a scale unit (24) and a sensor unit (25) that can be moved relative to each other in a measuring direction (M) is described. The scale unit contains scale elements (26) that are adapted to create a field pattern (P(x)) in measuring direction (M) that is detected by means of a receive circuit (35) of the sensor unit (25). The receive circuit (35) contains at least a first receive coil set (36) and a second receive coil set (37) that are offset in measuring direction (M). In so doing a first spatial phase and a second spatial phase receive signal is provided by these receive coil sets (36, 37) respectively. These spatial phases can be used for absolute position determination.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.