Sensor and method for detecting a position of an effective surface of the sensor
US9816888B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 16, 2014 |
| Grant date | Nov 14, 2017 |
| Priority date | — |
| Expiry date | Jun 16, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/098
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A sensor for detecting a position of an effective surface of the sensor includes a first magnetic field generator, a magnetic tunnel resistor, and a second magnetic field generator. The first magnetic field generator generates a first magnetic field that is oriented in an axis of a movement direction of the effective surface. The magnetic tunnel resistor is spaced from the first magnetic field generator in the extension of the axis. The magnetic tunnel resistor has a first magnetic layer, a second magnetic layer, and a tunnel barrier. The tunnel barrier is arranged between the first layer and the second layer, and the first layer is electrically insulated from the second layer. The second magnetic field generator is configured to generate a second magnetic field that is oriented transversally to the axis. The second magnetic field generator is oriented in a fixed manner relative to the tunnel resistor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.