Direction detection sensor
US8022692B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 19, 2009 |
| Grant date | Sep 20, 2011 |
| Priority date | — |
| Expiry date | Feb 7, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D2205/85
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A sensor responsive to movement of a detection target includes a magnetic field transducer operative to provide a magnetic field signal proportional to a magnetic field associated with the detection target, a peak detector for tracking positive and negative peaks of the magnetic field signal to generate a tracking signal, and a comparator having a first input responsive to the magnetic field signal, a second input responsive to an input signal related to the tracking signal, and an output at which is provided an output signal comprising first pulses having a first pulse width when the detection target moves in a first direction and second pulses having a second pulse width when the detection target moves in a second direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.