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31.发明申请Magnetic Field Sensor for Sensing a Movement of a Ferromagnetic Target Object 有权用于感测铁磁性目标物体运动的磁场传感器公开(公告)号：US20160123774A1
公开(公告)日：2016-05-05
申请号：US14529577
申请日：2014-10-31
Applicant: ALLEGRO MICROSYSTEMS, LLC
Inventor： Andrea Foletto , Jeffrey Eagen , Paul A. David
IPC: G01D5/20
CPC classification number: G01D5/2046 , G01D5/145 , G01R33/09
Abstract: A magnetic field sensor operates as a motion detector for sensing a movement of a ferromagnetic target object having features. The magnetic field sensor has a plurality of magnetoresistance elements to generate, in a first channel, a feature signal indicative of a proximity of a feature of a ferromagnetic target object and, in a second channel, an edge signal indicative of a proximity of an edge of a feature of a ferromagnetic target object.
Abstract translation: 磁场传感器用作运动检测器，用于感测具有特征的铁磁性目标物体的运动。 磁场传感器具有多个磁阻元件，以在第一通道中产生指示铁磁性目标物体的特征接近的特征信号，并且在第二通道中产生指示边缘接近的边缘信号 铁磁目标物体的特征。
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公开(公告)号：US11782103B2
公开(公告)日：2023-10-10
申请号：US16899746
申请日：2020-06-12
Applicant: Allegro MicroSystems, LLC
Inventor： Rémy Lassalle-Balier , Paolo Campiglio , Noémie Belin , Damien Dehu , Jeffrey Eagen
IPC: G01R33/09
CPC classification number: G01R33/091 , G01R33/093 , G01R33/098
Abstract: In one aspect, a dual double-pinned spin valve element includes a first spin valve that includes a first pinned layer and a second pinned layer and a second spin valve disposed on the first spin valve and comprising a third pinned layer and a fourth pinned layer. The first, second, third and fourth pinned layers each have a magnetization in a first direction.
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公开(公告)号：US20230236268A1
公开(公告)日：2023-07-27
申请号：US17648601
申请日：2022-01-21
Applicant: Allegro MicroSystems, LLC
Inventor： Rémy Lassalle-Balier , Jeffrey Eagen , Damien Dehu
CPC classification number: G01R33/07 , G01R33/093 , G01R33/098
Abstract: According to an embodiment, a magnetic field sensor includes: one or more magnetic field sensing elements; and a magnet structure to provide a bias magnetic field about the one or more magnetic field sensing elements, the magnet structure includes alternating magnetic layers and non-magnetic layers with at least three magnetic layers.
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公开(公告)号：US11686599B2
公开(公告)日：2023-06-27
申请号：US17647350
申请日：2022-01-07
Applicant: Allegro MicroSystems, LLC
Inventor： Rémy Lassalle-Balier , Jeffrey Eagen , Damien Dehu , Paul A. David , Andrea Foletto , Maxime Rioult
CPC classification number: G01D5/16 , G01R33/091
Abstract: Methods and apparatus that can include a rotatable target to generate a sinusoidal signal in a magnetic field sensor, wherein the target includes a plurality of sinusoidal teeth to reduce angular error. A magnetic field sensor can be configured to determine a position of the target. In embodiments, a rotatable target to generate a sinusoidal signal in a magnetic field sensor can include a plurality of sinusoidal teeth and a number of harmonics to reduce angular error.
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公开(公告)号：US20210389393A1
公开(公告)日：2021-12-16
申请号：US16899746
申请日：2020-06-12
Applicant: Allegro MicroSystems, LLC
Inventor： Rémy Lassalle-Balier , Paolo Campiglio , Noémie Belin , Damien Dehu , Jeffrey Eagen
IPC: G01R33/09
Abstract: In one aspect, a dual double-pinned spin valve element includes a first spin valve that includes a first pinned layer and a second pinned layer and a second spin valve disposed on the first spin valve and comprising a third pinned layer and a fourth pinned layer. The first, second, third and fourth pinned layers each have a magnetization in a first direction.
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Patent Agency Ranking
公开(公告)号：US10809094B2
公开(公告)日：2020-10-20
申请号：US15883721
申请日：2018-01-30
Applicant: Allegro MicroSystems, LLC
Inventor： Andrea Foletto , Rémy Lassalle-Balier , Yannick Vuillermet , Paul A. David , Jeffrey Eagen
IPC: G01B7/14 , G01D5/14 , G01D5/165 , G01R33/09 , G01R33/025
Abstract: Methods and apparatus for a sensor system having a first magnetic field sensing element with first and second segments where the first and second segments are located at positions to generate magnetic field bias in opposite directions for reducing sensitivity due to misalignment of the first and second segments. A processing module is configured to receive an output of the magnetic field sensing element.
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公开(公告)号：US20200209017A1
公开(公告)日：2020-07-02
申请号：US16232348
申请日：2018-12-26
Applicant: Allegro MicroSystems, LLC
Inventor： Jeffrey Eagen , Paul A. David
IPC: G01D5/245 , G01M13/021 , G01D5/14
Abstract: A magnetic field sensor for sensing a movement of a target object an include a substrate having a major planar surface and three or more magnetic field sensing elements disposed upon the major planar surface of the substrate. The three or more magnetic field sensing elements can have respective major response axes, each major response axis parallel to the major planar surface of the substrate. The three or more magnetic field sensing elements comprise first and third magnetic field sensing elements and a second magnetic field sensing element disposed between the first and third magnetic field sensing elements. A first spacing between the first and second magnetic field sensing elements is less than a second spacing between the second and third magnetic field sensing elements. No other magnetic field sensing elements are disposed between the first and third magnetoresistance elements.
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38.发明申请公开(公告)号：US20190234763A1
公开(公告)日：2019-08-01
申请号：US15883721
申请日：2018-01-30
Applicant: ALLEGRO MICROSYSTEMS, LLC
Inventor： Andrea Foletto , Rémy Lassalle-Balier , Yannick Vuillermet , Paul A. David , Jeffrey Eagen
CPC classification number: G01D5/145 , G01D5/165 , G01R33/025 , G01R33/09 , G01R33/093
Abstract: Methods and apparatus for a sensor system having a first magnetic field sensing element with first and second segments where the first and second segments are located at positions to generate magnetic field bias in opposite directions for reducing sensitivity due to misalignment of the first and second segments. A processing module is configured to receive an output of the magnetic field sensing element.
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公开(公告)号：US10114085B2
公开(公告)日：2018-10-30
申请号：US15061190
申请日：2016-03-04
Applicant: Allegro Microsystems, LLC
Inventor： Jeffrey Eagen , William P. Taylor
Abstract: A magnetic field sensor includes a plurality of magnetoresistance elements, each having at least one characteristic selected to provide a respective, different response to an applied magnetic field, wherein each of the plurality of magnetoresistance elements is coupled in parallel. Illustrative characteristics selected to provide the respective responses include dimensions and/or construction parameters such as materials, layer thickness and order, and spatial relationship of the magnetoresistance element to the applied magnetic field. A method includes providing each of a plurality of magnetoresistance elements with at least one characteristic selected to provide a respective, different response to an applied magnetic field, wherein each of the plurality of magnetoresistance elements is coupled in parallel.
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公开(公告)号：US09719806B2
公开(公告)日：2017-08-01
申请号：US14529577
申请日：2014-10-31
Applicant: Allegro MicroSystems, LLC
Inventor： Andrea Foletto , Jeffrey Eagen , Paul A. David
CPC classification number: G01D5/2046 , G01D5/145 , G01R33/09
Abstract: A magnetic field sensor operates as a motion detector for sensing a movement of a ferromagnetic target object having features. The magnetic field sensor has a plurality of magnetoresistance elements to generate, in a first channel, a feature signal indicative of a proximity of a feature of a ferromagnetic target object and, in a second channel, an edge signal indicative of a proximity of an edge of a feature of a ferromagnetic target object.
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