Honeywell International Inc.

Honeywell G.m.b.h.

Sensata Technologies, Inc.

Kent E Van Ostrand

Anthony M Dmytriw

Wayne A Lamb

Robert E Bicking

Albert Ferdinand Zwijze

Kenneth V Bechtold

Bruce B Figi

Edward L Stern

Shaun Cinnamon

In an embodiment, a method may be used to measure a plurality of positions associated with a plurality of magnets based on, for example, a magnetic angle of the magnets. The method may include various acts that may involve, for example, measuring magnetic field components associated with the plurality of magnets. In addition, the acts may include identifying a first angle and a second angle based on the measured magnetic field components. The identified first and second angles may be used to identify a position of a first magnet of the plurality of magnets and a second magnet of the plurality of magnets.

Method and apparatus for sensing positions of a plurality of magnets

An AMR array magnetic position sensing method and system for improving sensor-to-magnet carrier misposition. A magnetic carrier can be provided, which maintains two or more magnets with angled magnetic vectors position above an array of AMR array sensors. The magnet carrier can then be passed over the AMR array sensors to generate an output signal having less susceptibility to variations in air gap because the angles of flux lines generated by the magnets do not change much with air gap variation. The AMR array sensors are generally sensitive to variation in a direction being sensed, because a constant magnetic field angle sensed by AMR runners located on the AMR array sensors do not change with respect to variation in other directions.

Magnetoresistive array design for improved sensor-to-magnet carrier tolerances

An AMR array magnetic position sensing system for improved sensor flexibility and improved air gap performance is disclosed. A pair of magnets can be enclosed in a magnet carrier that moves along a path and located above an array of AMR position sensors. The magnets are generally magnetized through the length of the magnets, and the magnets are positioned in the carrier such that an angle between the magnets exists in a manner similar to an angle made by AMR runners on a surface of the AMR positions sensors to create magnetic flux lines thereof. The AMR position sensors come into contact with the uniform magnetic flux lines to sense a change in linear and angular position associated with the magnet carrier. The output signal generated by the AMR position sensors have less susceptibility to variations in air gap as the angles of the magnetic flux lines generated by the magnets do note change with respect to air gap variation.

AMR array magnetic design for improved sensor flexibility and improved air gap performance

A method and system for sensing linear position utilizing a magnetoresistive bridge circuit. A permanent magnet is provided having a gap formed therein. The magnetoresistive bridge circuit is generally located within the gap of the permanent magnet. The magnetoresistive bridge circuit includes a plurality of magnetoresistors. The magnet can be positioned in proximity to the ferrous target, which is associated with a slider that moves along a shaft. The magnetoresistive bridge circuit is generally biased by a magnetic field of the magnet. The magnetic field can saturate the magnetoresistive bridge circuit and a response of the magnetoresistors thereof. An output signal of the magnetoresistive bridge circuit can then be detected such that the output signal is produced by a change in an angle of the magnetic bias field. The output signal determines a target position with respect to a torque applied to the shaft.

Saturated magnetoresistive approach for linear position sensing

Angular position sensing apparatuses and methods are disclosed. An angular position sensing apparatus can include a rotatable base and two or more magnets located proximate to one another upon the rotatable base. The magnets are generally magnetized parallel and opposite to one another to create a uniform magnetic field thereof. Additionally, a sensor can be located external to the two magnets, such that the sensor comes into contact with the uniform magnetic field to sense a change in angular position associated with the rotatable base.

Magnetic angular position sensor apparatus

A safety restraint sensor system for detecting a latched position and/or an unlatched position of a latch and a buckle. The latch is movably mounted with respect to a housing. A vane projects from the latch. A magnet and a Hall element are mounted with respect to the housing. When the buckle engages the latch, the vane and the buckle move within the magnetic field of the magnet. A magnetic field is distributed through the Hall element by way of the buckle and the vane. The Hall element sends a signal indicating the latched position to an appropriate receptor, such as a safety restraint.

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Freeport, IL, United States of America

Kent E Van Ostrand