Magnetic current sensor calibration system and method
AssigneeHoneywell International Inc.
InventorsAndy Peczalski, Tom Rezachek
Life of this patent
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Abstract
A magnetic current sensor calibration system includes a plurality of sensors and a substrate. The substrate has a first surface and a second surface, and the sensors are mounted on the first surface. The substrate includes a bipolar calibration conductor and a unipolar calibration conductor. The bipolar calibration conductor is spaced apart from the plurality of sensors and is disposed between the first and second surfaces. The unipolar calibration conductor is spaced apart from the plurality of sensors and the bipolar calibration conductor, and is disposed between the first and second surfaces.
Claims20
A magnetic current sensor calibration system, comprising:
- a plurality of sensors;
- and
- a substrate having a first surface and a second surface, the plurality of sensors mounted on the first surface, the substrate comprising:
- a bipolar calibration conductor spaced apart from the plurality of sensors and disposed between the first and second surfaces;
- and
- a unipolar calibration conductor spaced apart from the plurality of sensors and the bipolar calibration conductor, the unipolar calibration disposed between the first and second surfaces.
A magnetic current sensor calibration system, comprising:
- a plurality of sensors;
- a substrate having a first surface and a second surface, the plurality of sensors mounted on the first surface, the substrate comprising:
- a bipolar calibration conductor spaced apart from the plurality of sensors and disposed between the first and second surfaces;
- and
- a unipolar calibration conductor spaced apart from the plurality of sensors and the bipolar calibration conductor, the unipolar calibration conductor disposed between the first and second surfaces;
- and
- a controller electrically coupled to the bipolar calibration conductor, to the unipolar calibration conductor, and to the plurality of sensors, the controller configured to:
- energize the bipolar calibration conductor and the unipolar calibration conductor;
- adjust a gain and an offset of each of the plurality of sensors;
- and
- measure outputs of each of the plurality of sensors and differential outputs of sensor pairs.
A magnetic current sensor calibration system, comprising:
- a plurality of sensors;
- a substrate having a first surface and a second surface, the plurality of sensors mounted on the first surface, the substrate comprising a bipolar calibration conductor and a unipolar calibration conductor;
- a first bipolar calibration current output conductor electrically connected to the bipolar calibration conductor;
- a second bipolar calibration current output conductor spaced apart from the first bipolar calibration current output conductor and electrically connected to the bipolar calibration conductor;
- a bipolar calibration current input conductor electrically connected to the bipolar calibration conductor, the bipolar calibration current input conductor disposed between, and spaced equidistant from, the first and second bipolar calibration current input conductors;
- a unipolar calibration current output conductor electrically connected to the unipolar calibration conductor;
- and
- a unipolar calibration current input conductor electrically connected to the unipolar calibration conductor and spaced apart from the unipolar calibration current input conductor,
- wherein:
- the bipolar calibration conductor is spaced apart from the plurality of sensors and is disposed between the first and second surfaces,
- the unipolar calibration conductor is spaced apart from the bipolar calibration conductor and the plurality of sensors and is disposed between the first and second surfaces,
- the bipolar calibration conductor is configured such that, upon being electrically energized, a first half of the sensors are exposed to a first magnetic field, and a second half of the sensors are exposed to a second magnetic field, the first magnetic field having a first magnitude and a first direction, the second magnetic field having the first magnitude and a second direction, the second direction opposite the first direction, and
- the unipolar calibration conductor is configured such that, upon being electrically energized, all of the sensors are exposed to a third magnetic field having a third magnitude and one of the first direction or the second direction.
Dependencies are inferred from the claim text.