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公开(公告)号：US20240426862A1
公开(公告)日：2024-12-26
申请号：US18337562
申请日：2023-06-20
Applicant: Allegro MicroSystems, LLC
Inventor： Sarkis Dono , Syed Bilal Ali
Abstract: A magnetic field speed sensor includes one or more magnetic field sensing elements to generate a magnetic field signal indicative of a magnetic field associated with a moveable target and a controller to generate a controller output signal including a plurality of output words, each including a speed pulse and a plurality of data pulses capable of having four different amplitudes. The time between the speed pulses of consecutive output words is indicative of the speed of movement of the target. Each data pulse corresponds to a data bit having a binary value represented by a transition direction of the data pulse and the amplitude of the data pulse. Features include a programmable data pulse width or an adaptively adjustable data pulse width to avoid truncation.
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Patent Agency Ranking
公开(公告)号：US20200232823A1
公开(公告)日：2020-07-23
申请号：US16254874
申请日：2019-01-23
Applicant: Allegro MicroSystems, LLC
Inventor： Dominik Weiland , Nathan Shewmon , Syed Bilal Ali
Abstract: A magnetic field sensor for sensing an absolute position of a target object can include a first one or more magnetic field sensing elements disposed proximate to a first portion of the target object, the first one or more magnetic field sensing elements operable to generate a first magnetic field signal responsive to the movement of the first portion; a second one or more magnetic field sensing elements disposed proximate to a second portion of the target object, the second one or more magnetic field sensing elements operable to generate a second magnetic field signal responsive to the movement of the second portion; a position detection module coupled to use the first and second magnetic field signals to generate a position value indicative of the absolute position; and an output format module coupled to receive the position value and to generate a position signal from the magnetic field sensor indicative of the absolute position.
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3.发明申请公开(公告)号：US20230037545A1
公开(公告)日：2023-02-09
申请号：US17393432
申请日：2021-08-04
Applicant: Allegro MicroSystems, LLC
Inventor： Syed Bilal Ali , Andreas P. Friedrich , Fabian Winkler
IPC: G01B7/30
Abstract: A method includes receiving a signal that is generated at least in part by one or more magnetic field sensing elements in response to a magnetic field associated with a rotating target, the rotating target a changing feature that changes with target rotation angle, the one or more magnetic field sensing elements being part of a sensor; detecting a current value of the signal; and identifying a current angular position of the rotating target relative to the sensor based on: (i) the current value of the signal and (ii) a map that maps each of a plurality of values of the signal to a different respective angular position of the rotating target.
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公开(公告)号：US20250044382A1
公开(公告)日：2025-02-06
申请号：US18362357
申请日：2023-07-31
Applicant: Allegro MicroSystems, LLC
Inventor： Syed Bilal Ali , Cédric Gillet
Abstract: According to one aspect of the disclosure, a method includes: receiving, by a magnetic field sensor, first and second magnetic field signals responsive to motion of a target; generating first and second digital pulse signals responsive to the first and second magnetic field signals, respectively; calculating a first time between a pulse edge of the first digital pulse signal and a next pulse edge of the second digital pulse signal; calculating a second time between two different pulse edges of the first digital pulse signal or two different pulse edges of the second digital pulse signal; calculating, using the calculated first and second times, a phase shift between the first and second magnetic field signals; and generating, using the calculated phase shift, a third magnetic field signal having a predetermined phase shift from the first magnetic field signal or from the first magnetic field signal.
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公开(公告)号：US10816366B2
公开(公告)日：2020-10-27
申请号：US16254869
申请日：2019-01-23
Applicant: Allegro MicroSystems, LLC
Inventor： Dominik Weiland , Nathan Shewmon , Syed Bilal Ali
Abstract: A magnetic field sensor for sensing an absolute position of a target object can include one or more magnetic field sensing elements disposed proximate to a mechanical intersection of first and second portions of a target object, wherein the one or more magnetic field sensing elements are operable to generate a first magnetic field signal responsive to the movement of both the first and second portions. The magnetic field sensor can also include a position detection module operable to use the first magnetic field signal to generate a position value indicative of the absolute position. The magnetic field sensor can also include an output format module coupled to receive the position value and to generate an output signal from the magnetic field sensor indicative of the absolute position.
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公开(公告)号：US20200232822A1
公开(公告)日：2020-07-23
申请号：US16254869
申请日：2019-01-23
Applicant: Allegro MicroSystems, LLC
Inventor： Dominik Weiland , Nathan Shewmon , Syed Bilal Ali
Abstract: A magnetic field sensor for sensing an absolute position of a target object can include one or more magnetic field sensing elements disposed proximate to a mechanical intersection of first and second portions of a target object, wherein the one or more magnetic field sensing elements are operable to generate a first magnetic field signal responsive to the movement of both the first and second portions. The magnetic field sensor can also include a position detection module operable to use the first magnetic field signal to generate a position value indicative of the absolute position. The magnetic field sensor can also include an output format module coupled to receive the position value and to generate an output signal from the magnetic field sensor indicative of the absolute position.
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