Patent · US Active

Sensor assembly for determining a spatial position of a first part relative to a second part

US9234736B2 · kind B2 · utility

6Cited by

10References

16Claims

0Family size

Assignees

Carl Zeiss Industrielle Messtechnik GmbH · DE
Sensitec GmbH · DE

Inventors

Thomas Engel · Aalen, DE
Uwe Loreit · Wetzlar, DE

Key dates

Filing date	Feb 7, 2013
Grant date	Jan 12, 2016
Priority date	—
Expiry date	Nov 1, 2033

Classification

Technology area (CPC G)Physics
CPC primaryG01R33/0082
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A sensor assembly for determining a spatial position of a first part relative to a second part has at least one magnet disposed on the first part. The magnet generates a magnetic field that extends to the second part. The sensor assembly further has a pair of magnetic field sensors arranged at a spatial distance from each other on the second part. The magnet is positioned in an interval defined by the spatial distance between the magnetic field sensors. The magnetic field sensors each produce an output signal depending on the magnetic field. The output signals of the two magnetic field sensors are combined to form a common sensor signal related to the spatial position of the first part relative to the second part. The output signals of the two magnetic field sensors essentially represent a direction of the magnetic field at the location of the respective magnetic field sensors.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.