公开(公告)号：US20230204636A1

公开(公告)日：2023-06-29

申请号：US18148020

申请日：2022-12-29

Applicant: Melexis Technologies SA

Inventor： Bruno BOURY ,  Simon HOUIS ,  Stephane RAUW ,  Lionel TOMBEZ ,  Guido DUPONT ,  Adrian HILL

IPC: G01R19/165

CPC classification number: G01R19/16571

Abstract: The present invention relates to a current sensor device comprising: current sensing means for sensing a current, a circuit arranged to convert a signal received from the current sensing means into a signal indicative of the sensed current, storage means for storing a plurality of values of the signal indicative of the sensed current, a processing circuit arranged for receiving a subset of the plurality of values stored in the storage means, for detecting or predicting an event based on a function of the subset, said function being stored in the storage means, and for generating a corresponding event signal, said current supervisory device further comprising an interface circuit arranged to output the corresponding event signal.

公开(公告)号：US11668770B2

公开(公告)日：2023-06-06

申请号：US17122163

申请日：2020-12-15

Applicant: Melexis Technologies SA

Inventor： Gael Close ,  Samuel Huber Lindenberger

IPC: G01R33/038 ,  G01D5/14 ,  G01R33/07

CPC classification number: G01R33/038 ,  G01D5/145 ,  G01R33/07

Abstract: A position sensor system includes a magnetic source for generating a magnetic field, and a position sensor device movable relative to the magnetic source, or vice versa. The position sensor device comprises at least three magnetic sensor elements for measuring at least three magnetic field values of the magnetic field, and a processing circuit configured for determining at least two magnetic field gradients or magnetic field differences based on the at least three magnetic field values, and for deriving from the at least two magnetic field gradients or differences a first value indicative of a position of the position sensor device, and for deriving from the at least two magnetic field gradients or differences a second value indicative of integrity of the position sensor system.

公开(公告)号：US20230160680A1

公开(公告)日：2023-05-25

申请号：US18099421

申请日：2023-01-20

Applicant: Melexis Technologies SA

Inventor： Gael CLOSE ,  Lorenzo LUGANI

IPC: G01B7/30 ,  G01B7/00 ,  G01D5/14 ,  G01D5/16

CPC classification number: G01B7/30 ,  G01B7/003 ,  G01D5/145 ,  G01D5/16

Abstract: A hybrid position sensor for determining the position of a hybrid target includes a main transducer for obtaining a first signal indicative for a position of the hybrid target within a first range and with a first resolution using a first or second technology; a support transducer for obtaining a second signal indicative for the position of the hybrid target within a second range and with a second resolution using the second technology if the main transducer is using the first technology and vice versa, wherein the first range is smaller than the second and the first resolution is higher than the second, and wherein the first technology is magnet based and the second technology is an inductive technology; a combiner for combining the obtained first signal and second signal to determine the position of the hybrid target.

公开(公告)号：US20230130262A1

公开(公告)日：2023-04-27

申请号：US17971120

申请日：2022-10-21

Applicant: Melexis Technologies SA

Inventor： Gael CLOSE ,  Johan RAMAN ,  Pieter ROMBOUTS ,  Andreas BONIN ,  Eric SACHSE

IPC: G01D18/00 ,  G01D3/02 ,  G01D5/14

Abstract: A sensor circuit for measuring a physical quantity including: a signal acquisition circuit having a sensor to provide an input signal related to the physical quantity; a processing circuit to receive the input signal and for providing an output signal representative of the physical quantity; the processing circuit comprising a closed loop comprising: a first sub-circuit arranged for receiving the input signal and a feedback signal, and configured for providing a first signal; a frequency dependent filter for receiving and filtering the first signal, and for providing the output signal; a second sub-circuit for receiving and converting the filtered signal into the feedback signal using a non-linear function.

公开(公告)号：US20230084942A1

公开(公告)日：2023-03-16

申请号：US17949868

申请日：2022-09-21

Applicant: Melexis Technologies SA

Inventor： Robert RACZ ,  Amalia SPATARU ,  Simon HOUIS ,  Bruno BOURY ,  Javier BILBAO DE MENDIZABAL

IPC: G01R19/00 ,  G01R15/20 ,  G01R33/00 ,  G01R33/07 ,  G01R33/09

Abstract: The present invention relates to a current-sensor structure comprising a conductor for conducting electrical current in a current direction. The conductor has one or more conductor surfaces. At least one current sensor is disposed on, over, adjacent to or in contact with the conductor and is offset from a centre of the conductor in an offset direction orthogonal to the current direction and optionally parallel to a conductor surface. The current-sensor structure can comprise a substrate on which the conductor is disposed. The current sensor can be located on a side of the conductor opposite or orthogonal to a surface of the substrate. The current sensor can be aligned with, near to or adjacent to an edge of the conductor. The current-sensor structure can comprise a shield, such as a U-shaped laminated shield that at least partially surrounds the conductor and the current sensor.

公开(公告)号：US11525716B2

公开(公告)日：2022-12-13

申请号：US17544218

申请日：2021-12-07

Applicant: Melexis Technologies SA

Inventor： Mohammed El-Shennawy ,  Paul Jordan ,  Yassine Akermi

IPC: G01D18/00 ,  G01D5/20 ,  G01D5/244

Abstract: A method of determining a set of calibration values for offset-compensation of an inductive angular sensor arrangement includes: a substrate with a transmitter coil and three receiver coils, and a rotatable target. The method involves the steps of: a) exciting the transmitter coil; b) positioning the target at or near predefined positions, c) measuring and processing the signals, including calculating sums of squares of difference signals. A sensor device, and an angular sensor system may be arranged or adapted in view of the method.

公开(公告)号：US11480591B2

公开(公告)日：2022-10-25

申请号：US16241111

申请日：2019-01-07

Applicant: Melexis Technologies SA

Inventor： Javier Bilbao De Mendizabal ,  Simon Houis

IPC: G01R19/00 ,  G01R15/20 ,  G01R33/00 ,  G01R33/07 ,  G01R33/09

Abstract: A current-sensor structure comprises a conductor for conducting electrical current in a current direction. The conductor has one or more conductor surfaces and an edge. At least one current sensor is disposed on, over, adjacent to or in contact with the conductor and is offset from a centre of the conductor in an offset direction orthogonal to the current direction. The current sensor is aligned with the edge of the conductor or the conductor has a width W and the current sensor is within a distance of W/2.5, W/3, W/4, W/5 or W/6 of the conductor edge. The current-sensor structure can comprise a substrate on which the conductor is disposed.

公开(公告)号：US11474165B2

公开(公告)日：2022-10-18

申请号：US17084947

申请日：2020-10-30

Applicant: Melexis Technologies SA

Inventor： Jian Chen ,  Orlin Gueorguiev Saradjov

IPC: G01R33/00 ,  H01L23/495 ,  H05K3/34 ,  H05K3/30

Abstract: A sensor comprises a housing; and a lead frame comprising at least three elongated leads having an exterior portion extending from the housing; and a magnetic sensor circuit disposed in the housing, and connected to the lead frame. The housing comprises two recesses arranged on two opposite sides of the housing for allowing the sensor to be mounted to a support. The lead frame may further comprise a plurality of tabs disposed between the elongated leads, for use as test pins. A component assembly comprising said sensor mounted on a support between deformable protrusions. A method of making said component assembly, comprising the step of positioning said component on the support between said protrusions, and deforming said protrusions such that they are at least partially disposed within the recesses.

公开(公告)号：US11422163B2

公开(公告)日：2022-08-23

申请号：US17319673

申请日：2021-05-13

Applicant: Melexis Technologies SA

Inventor： Javier Bilbao De Mendizabal

IPC: G01R15/20

Abstract: A current sensor is disclosed. The current sensor is substantially immune to stray fields due to the position and orientation of at least two magnetic field sensors and their respective axes of maximum sensitivity, as well as a total current sensor output that is a based on a difference of the individual magnetic field sensor outputs. The specific position and orientation of the magnetic field sensors allows for the current sensor to be smaller than known sensors of similar sensitivity.

公开(公告)号：US20220196435A1

公开(公告)日：2022-06-23

申请号：US17544014

申请日：2021-12-07

Applicant: Melexis Technologies SA

Inventor： Christian SCHOTT ,  Gael CLOSE ,  Bruno BRAJON

IPC: G01D5/14 ,  G01D5/244

Abstract: A position sensor system is arranged for determining a position of a sensor device movable along a predefined path relative to a magnetic source. The system includes the magnetic source and the sensor device. The magnetic source has a first plurality of magnetic pole pairs arranged along a first track and a second plurality of magnetic pole pairs arranged along a second track, centrelines of the tracks are spaced apart by a predefined track distance. The sensor device is configured for measuring at least two orthogonal magnetic field components at a first sensor location, and at least two second orthogonal magnetic field components at a second sensor location. The first and second sensor location are spaced apart by a predefined sensor distance smaller than the predefined track distance, in a direction transverse to the tracks.