Opacity-based rotary position sensor and method
US9091569B2 · kind B2 · utility
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13References
20Claims
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Key dates
| Filing date | Apr 19, 2011 |
| Grant date | Jul 28, 2015 |
| Priority date | — |
| Expiry date | Feb 28, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D5/34784
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A rotary position sensor includes a rotatable disk, a first light sensor configured to generate a first opacity signal, a second light sensor configured to generate a second opacity signal, and a comparator. The opacity of the rotatable disk is substantially unique at each radial angle value. The comparator is configured to generate a disk position signal as a function of the first opacity signal and the second opacity signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.