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US 10,415,997 B2Granted
Position sensor and method of position sensing
AssigneeMelexis Technologies SA
InventorsSamuel Huber Lindenberger, Javier Bilbao De Mendizabal
Life of this patent
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Abstract
A method of determining a position of a sensor device relative to an external magnetic field, comprises: providing currents to conductors to generate an internal magnetic field that will superimpose with the external magnetic field, measuring field components of the combined magnetic field, calculating a position based on the applied currents and/or on the measured residual magnetic field. A position sensor is provided for performing the method.
Claims13
A method of determining a position of a sensor device relative to an external magnetic field, the method comprising the steps of:
- applying or adjusting a first current to a first electrical conductor to generate a first internal magnetic field that will superimpose with the external magnetic field so as to form a first total magnetic field;
- measuring a component of the first total magnetic field at a first location using a first magnetic sensing element;
- applying or adjusting a second current to a second electrical conductor different from the first electrical conductor to generate a second internal magnetic field that will superimpose with the external magnetic field so as to form a second total magnetic field;
- measuring a component of the second total magnetic field at a second location using a second magnetic sensing element different from the first magnetic sensing element;
- calculating the position of said sensor device
- as a function of at least the first and the second current or
- as a function of the first and the second current and taking into account-the measured component of the first total magnetic field at the first location, and/or the measured component of the second total magnetic field at the second location.
4 more elements
Dependencies are inferred from the claim text.