Optoelectronic angle sensor and method for determining a rotational angle about an axis
US8462979B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 16, 2007 |
| Grant date | Jun 11, 2013 |
| Priority date | — |
| Expiry date | Jan 13, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D5/3473
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention relates to an optoelectronic angle sensor (1a) for determining a rotational angle about an axis (6), comprising a circular disk (2a) that can be rotated about the axis. Said circular disk comprises a coding, essentially over the entire surface, a flat photosensitive detector (3a), a device for producing an evaluable image of the coding on the detector and a memory and evaluation component (4a) for determining the rotational angle. A largely complete, or in particular an entire image of the coding is produced on the detector. The rotational angle is determined using a parameter-varying stochastic comparison method, from the image and a parameterised electronic reference pattern that is provided by means of the memory and evaluation component.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.