Rotation sensor
US8164324B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jul 17, 2009 |
| Grant date | Apr 24, 2012 |
| Priority date | — |
| Expiry date | Jul 8, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D2205/85
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A rotation sensor includes a detecting portion, a rotational state determining portion and a pulse generating portion. The detecting portion detects a rotation of a rotational member and outputs a detection signal. The rotational state determining portion determines a rotational state of the rotational member on the basis of the detection signal in a predetermined period. The pulse generating portion generates and outputs a first pulse and a second pulse, of which waveforms differ from each other, in response to a rotational direction of the rotational member after the predetermined period. The pulse generating portion further generates and outputs a third pulse regardless of the rotational state of the rotational member in the predetermined period.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.