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    DISPLACEMENT MEASUREMENT USING MILLIMETER-WAVE METAMATERIAL TARGETS
    24.
    发明公开
    DISPLACEMENT MEASUREMENT USING MILLIMETER-WAVE METAMATERIAL TARGETS 审中-公开

    公开(公告)号：US20240310507A1

    公开(公告)日：2024-09-19

    申请号：US18435515

    申请日：2024-02-07

    Applicant: Infineon Technologies AG

    Inventor： Dirk HAMMERSCHMIDT ,  Christof MICHENTHALER

    IPC: G01S13/75 ,  G01D5/48

    CPC classification number: G01S13/751 ,  G01D5/48 ,  G01D2205/10 ,  G01D2205/20 ,  G01D2205/90

    Abstract: A sensor system includes at least one transmitter; a receiver circuit; and a metamaterial layer having a relative position that is configured to vary relative to the transmitter. The metamaterial layer includes an array of elementary structures arranged within a coordinate system of the metamaterial layer. The array of elementary structures includes a first metamaterial characteristic that changes along a first coordinate variation of the coordinate system and a second metamaterial characteristic, different from the first metamaterial characteristic, that changes along a second coordinate variation of the coordinate system. The at least one transmitter is configured to transmit an electromagnetic transmit wave toward the metamaterial layer. The metamaterial layer is configured to convert the electromagnetic transmit wave into an electromagnetic receive wave based on the relative position. The receiver circuit is configured to receive the electromagnetic receive wave and determine the relative position based on the electromagnetic receive wave.

    METAMATERIAL BASED TORQUE AND SHAFT ROTATIONAL SPEED SENSOR
    25.
    发明申请
    METAMATERIAL BASED TORQUE AND SHAFT ROTATIONAL SPEED SENSOR 有权

    公开(公告)号：US20230131760A1

    公开(公告)日：2023-04-27

    申请号：US17509724

    申请日：2021-10-25

    Applicant: Infineon Technologies AG

    Inventor： Alexander SCHOSSMANN ,  Alexander BERGMANN ,  Franz Michael DARRER ,  Dirk HAMMERSCHMIDT ,  Christof MICHENTHALER

    IPC: G01L3/10

    Abstract: A torque measurement system includes an outer rotational shaft and an inner rotational shaft both configured to rotate about a rotational axis. A rotation of the inner rotational shaft causes a rotation of the outer rotational shaft via a coupling structure. At least one torque applied to the inner rotational shaft is translated into a first torque-dependent angular shift between the shafts. A first metamaterial track is coupled to the outer rotational shaft and configured to co-rotate with the outer rotational shaft. A second metamaterial track is coupled to the inner rotational shaft and configured to co-rotate with the inner rotational shaft. The tracks are configured to convert an electro-magnetic transmit signal into a first electro-magnetic receive signal based on the first torque-dependent angular shift and a receiver is configured to receive the electro-magnetic receive signal and measure the at least one torque based on the electro-magnetic receive signal.

    DEVICE AND METHOD FOR CALIBRATING A MAGNETIC ANGLE SENSOR
    26.
    发明申请
    DEVICE AND METHOD FOR CALIBRATING A MAGNETIC ANGLE SENSOR 有权

    公开(公告)号：US20220364891A1

    公开(公告)日：2022-11-17

    申请号：US17740594

    申请日：2022-05-10

    Applicant: Infineon Technologies AG

    Inventor： Dirk HAMMERSCHMIDT

    IPC: G01D18/00 ,  G01D5/14

    Abstract: A method for calibrating a magnetic angle sensor includes measuring, for a plurality of angle positions within a 360° rotation of a measurement object, in each case a first sensor signal for a first magnetic field component and a second sensor signal for a second magnetic field component orthogonal to the first magnetic field component, wherein the first and second sensor signals are in each case 360° periodic and representable as a Fourier series with a Fourier component of a fundamental and a Fourier component of a harmonic; determining the Fourier component of the harmonic for the first and second sensor signals based on a difference between a trajectory defined by the measured first and second sensor signals and a circular path; and correcting the angle positions based on the Fourier component of the harmonic determined for the first and second sensor signals.

    ENCRYPTED COMMUNICATION OF A SENSOR DATA CHARACTERISTIC
    27.
    发明申请
    ENCRYPTED COMMUNICATION OF A SENSOR DATA CHARACTERISTIC 有权

    公开(公告)号：US20220263806A1

    公开(公告)日：2022-08-18

    申请号：US17249030

    申请日：2021-02-17

    Applicant: Infineon Technologies AG

    Inventor： Dirk HAMMERSCHMIDT ,  Christof MICHENTHALER

    IPC: H04L29/06

    Abstract: A sensor may obtain sensor data. The sensor may transmit the sensor data to a controller via a sensor-controller interface. The sensor may determine, based on the sensor data, a security characteristic for the sensor data. The sensor may encrypt the security characteristic to generate an encrypted security characteristic. The sensor may transmit the encrypted security characteristic to the controller via the sensor-controller interface.

    DETECTION OF A DISCRETE POSITIONAL RELATIONSHIP BETWEEN A MAGNETIC FIELD GENERATOR AND A MAGNETIC FIELD SENSOR ARRANGEMENT
    28.
    发明申请
    DETECTION OF A DISCRETE POSITIONAL RELATIONSHIP BETWEEN A MAGNETIC FIELD GENERATOR AND A MAGNETIC FIELD SENSOR ARRANGEMENT 有权

    公开(公告)号：US20220155104A1

    公开(公告)日：2022-05-19

    申请号：US17665850

    申请日：2022-02-07

    Applicant: Infineon Technologies AG

    Inventor： Dirk HAMMERSCHMIDT ,  Robert HERMANN

    IPC: G01D5/14 ,  G01D5/16

    Abstract: By a relative movement between an arrangement of at least three magnetic field sensors and a magnetic field generator, different discrete positional relationships can be produced between the same. A first signal is calculated as a first linear combination using at least two of three sensor signals. It is checked whether the first signal uniquely indicates one of the different discrete positional relationships. If yes, it is determined that the arrangement is located in the one discrete positional relationship. If no, a second signal is calculated as a second linear combination using at least two of the three sensor signals, at least one of which differs from the sensor signals used in the calculation of the first signal, and at least the second signal is used to determine in which of the different discrete positional relationships the arrangement is located relative to the magnetic field generator.

    VECTOR LENGTH VARIANCE CHECK FOR FUNCTIONAL SAFETY OF ANGLE SENSORS
    30.
    发明申请
    VECTOR LENGTH VARIANCE CHECK FOR FUNCTIONAL SAFETY OF ANGLE SENSORS 有权

    公开(公告)号：US20210180938A1

    公开(公告)日：2021-06-17

    申请号：US16715084

    申请日：2019-12-16

    Applicant: Infineon Technologies AG

    Inventor： Dirk HAMMERSCHMIDT

    IPC: G01B7/30 ,  G01R33/02

    Abstract: A magnetic angle sensor system includes a first magnetic sensor configured to generate a first sensor signal, a second magnetic sensor configured to generate a second sensor signal, and at least one signal processor configured to: generate an angle signal including an angular value corresponding to an orientation of a magnetic field based on the first sensor signal and the second sensor signal; generate a vector length signal comprising a plurality of vector lengths corresponding to the first sensor signal and the second sensor signal; determine a vector length variance between at least two consecutively sampled vector lengths of the plurality of vector lengths; compare the determined vector length variance to a tolerance range defined by at least one of a minimum tolerance threshold and a maximum tolerance threshold; and generate a warning signal on a condition that the determined vector length variance is outside the tolerance range.

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