Speed sensor authority for and method of measuring speed of rotation
US9880188B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 28, 2012 |
| Grant date | Jan 30, 2018 |
| Priority date | — |
| Expiry date | Nov 3, 2034 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2270/304
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Sensor arrangement for measuring a rotation speed of a salient member of a rotatable body comprising a first electrode arrangement providing a first input, a second electrode arrangement providing a second input different from the first input, the first and second electrode arrangements configured so noise in the first and second inputs is substantially the same, and wherein variations in the first and second inputs are caused by rotation of the rotatable body and the salient member past the first and second electrode arrangements, an output arrangement for receiving the first and second inputs, and for providing an output proportional to a difference between the first and second inputs, and a retaining member for retaining one or more of the first and second electrode arrangements and output arrangement, the speed of rotation of the salient member measurable from a variation in the output caused by rotation of that salient member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.