Multi-channel magnetic sensor device
AssigneeWoodward, Inc.
InventorsZenon Szulyk, David M. Thunga, Kirill Goldin, Kevin Spahr
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Abstract
Methods and systems for a rotary contactless potentiometer device, which includes one or more sensors, such as a Hall Effect sensor. The sensors are mounted on one or more substrates, such as a printed circuit board (PCB). In examples, each sensor channel is electrically isolated on the substrate. The sensors are arranged within range of a magnetic field, such as from a magnet rotatable about a shaft. The potentiometer device is housed in a frame to reduce stray magnetic interference.
Claims20
A contactless potentiometer device comprising:
- a plurality of sensors mounted on one or more substrates, each sensor configured to measure change in a magnetic field and to be physically and electrically isolated from another sensor;
- and
- a ring magnet positioned a distance from the one or more sensors, such that the one or more sensors are within range of the magnetic field from the magnet.
A rotary sensing device configured to sense changes in angle in a rotary sensor comprising:
- a plurality of sensors mounted on one or more substrates, each sensor configured to measure change in a magnetic field and be electrically isolated from another sensor;
- and
- a magnet positioned a distance from the one or more sensors, such that the one or more sensors are within range of the magnetic field from the magnet, wherein each sensor is configured to detect a change in angle from a reference position based on a rotation of the magnet.
A method of programming a contactless potentiometer device comprising:
- arranging a first magnetic sensor on a substrate;
- aligning the first magnetic sensor with a magnetic field corresponding to a given rotation angle of a rotatable control device;
- programming the first magnetic sensor with linearization data corresponding to the given rotation angle;
- arranging a second magnetic sensor on the substrate;
- aligning the second magnetic sensor with the first magnetic sensor;
- and
- programming the second magnetic sensor with linearization data corresponding to the given rotation angle.
Dependencies are inferred from the claim text.