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    POSITION SENSING METHOD AND SYSTEM
    3.
    发明申请
    POSITION SENSING METHOD AND SYSTEM 有权

    公开(公告)号：US20250027760A1

    公开(公告)日：2025-01-23

    申请号：US18354895

    申请日：2023-07-19

    Applicant: Allegro MicroSystems, LLC

    Inventor： Zachary Richards ,  Alexander Latham ,  Rémy Lassalle-Balier ,  Solène Bastien ,  Mathew Drouin

    IPC: G01B7/00 ,  G01B7/30 ,  G01R33/07

    Abstract: A system is provided comprising: a first target including a plurality of first teeth; and a second target that is coupled to the first target via a mechanical link, the second target including a plurality of second teeth, the second target being disposed above or below the first target, the plurality of first teeth including a different number of teeth than the plurality of second teeth, wherein the first target and the second target are configured to generate respective magnetic fields in response to one or more excitation magnetic fields, the respective magnetic fields being usable to measure a twisting force that is incident on the mechanical link that couples the first target to the second target.

    SYSTEMS AND METHODS FOR PROCESSING TEMPERATURE DATA OR OTHER SIGNALS
    5.
    发明申请
    SYSTEMS AND METHODS FOR PROCESSING TEMPERATURE DATA OR OTHER SIGNALS 有权
    处理温度数据或其他信号的系统和方法

    公开(公告)号：US20160238671A1

    公开(公告)日：2016-08-18

    申请号：US15138559

    申请日：2016-04-26

    Applicant: Allegro Microsystems, LLC

    Inventor： Mathew Drouin ,  Devon Fernandez ,  William P. Taylor

    IPC: G01R33/00 ,  G01R33/09 ,  G01R33/07

    CPC classification number: G01R33/0082 ,  G01D3/0365 ,  G01K7/00 ,  G01K7/01 ,  G01R33/0017 ,  G01R33/0029 ,  G01R33/0041 ,  G01R33/07 ,  G01R33/09 ,  G01R35/005

    Abstract: In an embodiment, a circuit is configured to produce a magnetic field signal having a frequency spectrum. The circuit may also produce a temperature signal. A modulation circuit may modulate the temperature signal with a frequency outside the frequency spectrum of the magnetic field signal. The modulated signal and the magnetic field signal may be combined to produce a combined signal. A separation circuit may be configured to separate component signals from the combined signal. The separation circuit may include a first filter, which, when applied to the combined signal, produces a filtered signal; a modulation circuit configured to shift the data representing the temperature signal to a baseband frequency; and a second filter configured to separate the data representing the temperature signal from the combined signal.

    Abstract translation: 在一个实施例中，电路被配置为产生具有频谱的磁场信号。 电路也可能产生温度信号。 调制电路可以用在磁场信号的频谱之外的频率来调制温度信号。 调制信号和磁场信号可以被组合以产生组合信号。 分离电路可以被配置为从组合信号中分离分量信号。 分离电路可以包括第一滤波器，当应用于组合信号时，产生滤波信号; 调制电路，被配置为将表示温度信号的数据移位到基带频率; 以及第二滤波器，被配置为将表示温度信号的数据与组合信号分离。

    Systems and Methods for Diagnostic Circuit Testing
    7.
    发明申请
    Systems and Methods for Diagnostic Circuit Testing 审中-公开

    公开(公告)号：US20190025374A1

    公开(公告)日：2019-01-24

    申请号：US15657324

    申请日：2017-07-24

    Applicant: Allegro MicroSystems, LLC

    Inventor： Mathew Drouin ,  Jonathan Zimmermann

    IPC: G01R31/319 ,  G01R31/28 ,  G01R31/30

    Abstract: An integrated circuit including a first multiplexor configured to receive one of a plurality of diagnostic signals from circuitry under test (DUT), the first multiplexor responsive to diagnostic signals provided thereto and configured to selectively output one of the diagnostic signals in response to a control signal, a second multiplexor configured to receive one of a plurality of reference signals from one of a plurality of nodes on a reference circuit, the second multiplexor configured to selectively output one of the diagnostic signals in response to a control signal, and a comparator configured to compare the diagnostic signal elicited from the first multiplexor with the reference signal elicited from the second multiplexor, the comparator further configured to output the result of the comparison between the diagnostic signal and the reference signal.

    POSITION SENSING METHOD AND SYSTEM
    8.
    发明申请
    POSITION SENSING METHOD AND SYSTEM 有权

    公开(公告)号：US20250029780A1

    公开(公告)日：2025-01-23

    申请号：US18354903

    申请日：2023-07-19

    Applicant: Allegro MicroSystems, LLC

    Inventor： Rémy Lassalle-Balier ,  Alexander Latham ,  Benjamin Geiger ,  Mathew Drouin

    IPC: H01F38/14 ,  H02J50/80

    Abstract: An apparatus, comprising: a first transmitting coil including at least one first portion and at least one second portion, the first and second portions having different polarities; and a second transmitting coil that is disposed above or below the first transmitting coil, the second transmitting coil including at least one third portion and at least one fourth portion, the third and fourth portions having different polarities, wherein the first and second transmitting coils are configured so that, when the first transmitting coil is not driven and the second transmitting coil is driven, a net magnetic flux through at least one of the first portions is approximately zero, the net magnetic flux being a magnetic flux that is entirely attributable to the second transmitting coil.

    Phase compensation for an inductive position sensor
    9.
    发明授权
    Phase compensation for an inductive position sensor 有权

    公开(公告)号：US11435206B2

    公开(公告)日：2022-09-06

    申请号：US17082151

    申请日：2020-10-28

    Applicant: Allegro MicroSystems, LLC

    Inventor： Mathew Drouin

    IPC: G01D5/22 ,  H03L7/099 ,  H03K5/00 ,  G01D18/00 ,  G01R33/12 ,  H03L7/093

    Abstract: An interface circuit for a position sensor system including an oscillator generating an oscillation signal having a carrier frequency and a primary phase, a primary coil responsive to the oscillation signal, and a secondary coil electromagnetically coupled to the primary coil by a target and configured to generate a secondary signal having the carrier frequency and a secondary phase provides phase compensation. The interface circuit includes a sampling and conversion circuit configured to sample the secondary signal during sample periods and convert the secondary signal into a digital signal, a demodulator coupled to receive the digital signal and configured to demodulate the digital signal in order to generate a position signal indicative of a position of the target, a phase detector coupled to receive the position signal and configured to detect an alignment of the secondary phase with respect to the sample periods and generate a phase detector output signal indicative of whether the secondary phase is aligned with the sample periods, and a delay circuit responsive to the phase detector output signal and configured to apply a delay to the sampling and conversion circuit if the phase detector output signal indicates that the secondary phase is not aligned with the sample periods.

    Phase Compensation For An Inductive Position Sensor
    10.
    发明申请
    Phase Compensation For An Inductive Position Sensor 有权

    公开(公告)号：US20220128382A1

    公开(公告)日：2022-04-28

    申请号：US17082151

    申请日：2020-10-28

    Applicant: Allegro MicroSystems, LLC

    Inventor： Mathew Drouin

    IPC: G01D5/22 ,  H03K5/00 ,  H03L7/099

    Abstract: An interface circuit for a position sensor system including an oscillator generating an oscillation signal having a carrier frequency and a primary phase, a primary coil responsive to the oscillation signal, and a secondary coil electromagnetically coupled to the primary coil by a target and configured to generate a secondary signal having the carrier frequency and a secondary phase provides phase compensation. The interface circuit includes a sampling and conversion circuit configured to sample the secondary signal during sample periods and convert the secondary signal into a digital signal, a demodulator coupled to receive the digital signal and configured to demodulate the digital signal in order to generate a position signal indicative of a position of the target, a phase detector coupled to receive the position signal and configured to detect an alignment of the secondary phase with respect to the sample periods and generate a phase detector output signal indicative of whether the secondary phase is aligned with the sample periods, and a delay circuit responsive to the phase detector output signal and configured to apply a delay to the sampling and conversion circuit if the phase detector output signal indicates that the secondary phase is not aligned with the sample periods.

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