Magnetoresistive sensor for high precision measurements of lengths and angles
US6191578A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 7, 1998 |
| Grant date | Feb 20, 2001 |
| Priority date | — |
| Expiry date | May 7, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/096
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A sensor for measuring linear or angular dimension. The sensor can be moved with respect to a magnetized scale with a period .lambda.. It is equipped with magnetoresistive electrodes provided with barber-pole structures and connected so as to form n measuring bridges, each measuring bridge formed by four sets of magnetoresistive electrodes. The magnetoresistive electrodes making up each set are connected in series, the magnetoresistive electrodes being distributed spatially so as to constitute x groups. Each group being formed by more than eight consecutive magnetoresistive electrodes coming from two sets of a same measuring bridge.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.