Honeywell International Inc.

Christopher Kenney

Richard M Andrews

Pascal Schweizer

Nicholas F Busch

ShanoPrasad Kunjappan

Dinesh Naik

Perry A Holman, Jr

Madhan Raj Bagianathan

Ravi Kasturi Raj

Apparatus and associated methods relate to measuring position and displacement of a 2D surface magnet array of at least three adjacent magnetic north and south tracks with an acute angle versus its motion displacement relative to a magnetic field sensor (e.g., magnetic sensing probe). In an illustrative example, the geometry of the 2D surface magnet array may be planar with adjacent and alternating north and south pole regions. In some embodiments, the 2D surface magnet array geometry may take the form of (1) an axial cylindrical helical multipole magnet array having individually magnetized layers that are oriented in helical shape, or (2) a radial disk spiral multipole magnet array with at least three adjacent north and south tracks oriented as a spiral shape.

Off-axis magnetic angular sensor using a magnetic sensing probe and multi-pole magnet array

This disclosure describes techniques for sensing an angular position of a rotating object over an angular position range that includes up to 360 degrees using an arc position encoder comprising a substantially 180-degree angular position sensing range. The encoder may include a base comprising an arc length defined by a first and a second end, one or more magnetic field sensors disposed within the base between the first and second ends, and one or more polarity transition sensors also disposed within the base between the first and second ends. The encoder may further include a magnetic target that includes first and second magnetic poles disposed on opposite ends so as to generate a uniform magnetic field, wherein the magnetic target is coupled to the rotating object so as to rotate about an axis of rotation located substantially in a center of a circle defined by the base.

180-degree arc position encoder with an extended angular position sensing range

A magnet's N and S polarity can be alternately assembled within a MR sensor housing to determine the type of sensor that is assembled. In an MR sensor package including a housing having a sensing face and adapted for containing a sensing transducer and magnet, it can be determined if the MR sensor package is to be an X-type or Y-type sensor by testing the MR sensor package prior to labeling, shipping and/or use to determine its type by measuring the magnetic field emanating from the sensing face using a magnetic gauss probe. During assembly, the magnets N or S polarity is positioned to face the sensing face of the sensor to indicate the sensor type.

Magnetic tagging of magnetoresistive sensors

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Davis, IL, United States of America

Christopher Kenney