Displacement sensor with temperature compensation by combining outputs in a predetermined ratio
US5545983A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 16, 1994 |
| Grant date | Aug 13, 1996 |
| Priority date | — |
| Expiry date | Sep 16, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01B3/04
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A displacement sensor provided with a magnet (4) and magnetoelectric conversion element for sensing the variation of magnetism caused by the magnet to sense the displacement of the magnetic material to be measured, which includes a first magnetoelectric conversion element (5) located in the place where the magnetic flux density is varied by the displacement of the material to be measured (7), a second magnetoelectric conversion element (6) of the same kind as the first magnetoelectric conversion element (5) located in the place where the magnetic flux density is not varied by the displacement of the material to be measured, and a circuit element (10) for adding the outputs of the first and second magnetoelectric conversion element at a predetermined ratio of V20/V10, wherein V20 and V10 are outputs from the first and second magnetoelectric conversion elements, respectively, for a displacement of 0 at a temperature of 20.degree. C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.