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公开(公告)号：US20210199730A1
公开(公告)日：2021-07-01
申请号：US17122163
申请日：2020-12-15
Applicant: Melexis Technologies SA
Inventor： Gael CLOSE , Samuel HUBER LINDENBERGER
IPC: G01R33/038 , G01R33/07 , G01D5/14
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.
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公开(公告)号：US20210088603A1
公开(公告)日：2021-03-25
申请号：US17023798
申请日：2020-09-17
Applicant: Melexis Technologies SA
Inventor： Yves BIDAUX , Jean-Claude DEPOORTER
Abstract: A linear or angular position sensor system comprising a magnetic structure for generating a magnetic field, and a sensor device movable relative to the magnetic structure. The sensor device comprises a plurality of sensor elements for measuring at least two characteristics of said magnetic field, and a processing circuit for determining a linear or angular position of the sensor device relative to the magnetic structure in accordance with a predefined function of these characteristics (e.g. components or gradients). The magnetic structure comprises one or more grooves, having a shape and size which can be described by a limited set of parameters, having values optimized to reduce a maximum error between the actual position of the sensor device, and the calculated position based on said predefined function, by at least a factor of 2.
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公开(公告)号：US20210018574A1
公开(公告)日：2021-01-21
申请号：US17030900
申请日：2020-09-24
Applicant: Melexis Technologies SA
Inventor： Jian CHEN , Matthijs PARDOEN , Arnaud LAVILLE , Orlin GUEORGUIEV SARADJOV
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 comprising at least two recesses or at least two lateral protrusions arranged on two opposite sides of the housing, for allowing the sensor to be mounted to the support. A component assembly comprising said sensor mounted on a support, the support comprising a plurality of first and second posts and a plurality of electrical contacts. A method of producing said component assembly, comprising the step of arranging said sensor with its elongated leads adjacent the first posts, and arranging its lateral protrusions and/or lateral recesses adjacent the second posts, and connecting the elongated leads to the electrical contacts.
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公开(公告)号：US20200372730A1
公开(公告)日：2020-11-26
申请号：US16880077
申请日：2020-05-21
Applicant: Melexis Technologies SA
Inventor： Julien CANIONCQ , Ivan ZAGAN , Yevgeniy SOSULIAKA
Abstract: A sensor system for acquiring a perturbation, induced by a contact patch of a tire, in data generated by a sensor system mounted in the tire, comprises at least one sensor adapted for generating the data related to a physical property of the tire, and an acquisition system comprising memory. The sensor system is adapted for triggering the acquisition system to acquire the data and for storing it in a buffer in the memory, until a predefined delay after the perturbation is recognized. The perturbation is recognized by comparing the stored data with at least one characterizing feature of the perturbation.
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公开(公告)号：US20200348151A1
公开(公告)日：2020-11-05
申请号：US16963333
申请日：2019-01-22
Applicant: MELEXIS TECHNOLOGIES SA
Inventor： Samuel HUBER LINDENBERGER , Javier BILBAO DE MENDIZABAL , Jan-Willem BURSSENS , Wolfram KLUGE , Jorg RUDIGER , Kevin FAHRNI
Abstract: An apparatus is arranged for sensing a position of a target, in particular for offset invariant sensing of the position of the target is described, as well as the respective target and the method. The apparatus comprises at least two sensor elements. At least one sensor element of the at least two sensor elements generates a magnetic field. At least one other sensor element of the at least two sensor elements receives the magnetic field and outputs at least one signal associated with the received magnetic field. The target affects a coupling of a magnetic flux of the magnetic field between the at least one sensor element generating the magnetic field and the at least one other sensor element receiving the magnetic field and wherein the target is non-rotational invariant.
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Patent Agency Ranking
公开(公告)号：US20200149925A1
公开(公告)日：2020-05-14
申请号：US16678336
申请日：2019-11-08
Applicant: Melexis Technologies SA
Inventor： Yves BIDAUX
IPC: G01D5/14 , G01R33/022
Abstract: A position sensor system for determining a position of a sensor device relative to a magnetic structure, the system comprising: said magnetic structure comprising a plurality of poles; said sensor device comprising a plurality of magnetic sensors; the magnetic structure being movable relative to the sensor device, or vice versa; wherein: a distance between centres of adjacent poles varies along the movement direction; the sensor device is adapted: for determining a first magnetic field component parallel to, and a second magnetic field component perpendicular to a movement direction, and for calculating a coarse signal based on these components; and for determining a first and second gradient of these signals along the movement direction, and for calculating a fine signal based on these gradients; and for determining said position based on the coarse signal and the fine signal.
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公开(公告)号：US20200081057A1
公开(公告)日：2020-03-12
申请号：US16563403
申请日：2019-09-06
Applicant: Melexis Technologies SA
Inventor： Olivier DUBRULLE , Marie DLEVAQUE , Pierre LETOUSEY
Abstract: A coil arrangement for generating a configurable 3D magnetic field vector inside a cavity, comprises a solenoid forming the cavity and having a first axis, a first pair of coils having a second common axis, and a second pair of coils having a third common axis, the three axes intersecting in a point where a chip to be tested is to be located. A test arrangement further comprises a container for holding a liquid and having at least one opening for providing access to the at least one cavity. A test system further comprises an electrical unit with a plurality of current sources, and a mechanical positioning mechanism for placing and holding the chip to be tested.
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公开(公告)号：US20200011941A1
公开(公告)日：2020-01-09
申请号：US16503803
申请日：2019-07-05
Applicant: Melexis Technologies SA
Inventor： Johan RAMAN , Pieter ROMBOUTS
Abstract: A method of reading out a Hall plate which comprises at least 4 contacts. The method comprises: reading out two of the contacts while biasing two other contacts of the at least 4 contacts thereby obtaining a readout signal; switching biasing and readout contacts according to a random or pseudo-random sequence of phases, each phase corresponding with a different permutation of biasing and readout contacts selected from the at least 4 contacts of the Hall plate wherein the biasing and readout contacts are selected such that the readout signal is a measure for the magnetic field; processing of the readout signal to obtain a readout of the Hall plate representative for the magnetic field.
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公开(公告)号：US20190312584A1
公开(公告)日：2019-10-10
申请号：US16378794
申请日：2019-04-09
Applicant: MELEXIS TECHNOLOGIES SA
Inventor： Johan RAMAN , Pieter ROMBOUTS
IPC: H03M3/00
Abstract: An analog-to-digital converter comprises a first quantizer arranged for yielding a first digital signal; an error signal generation block arranged for generating an error signal representative of a difference between an analog input signal and the first digital signal; an analog loop filter arranged for receiving the error signal; a second quantizer arranged for receiving an output signal of the analog loop filter and for outputting a second digital signal; a digital loop filter arranged for receiving the second digital signal and for providing an input signal to the first quantizer; and a recombiner block comprising a first recombination and a second recombination filter, and an adder circuit for adding outputs of the first and second recombination filters. The first and second recombination filters are selected to obtain an analog-to-digital converted output signal being less dependent on quantization noise caused by the first quantizer than a first digital signal.
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公开(公告)号：US20190293454A1
公开(公告)日：2019-09-26
申请号：US16249139
申请日：2019-01-16
Applicant: Melexis Technologies SA
Inventor： Yves BIDAUX , Jean-Claude DEPOORTER , Jan-Willem BURSSENS
Abstract: A sensor system comprises a magnetic field generator and a sensor device arranged at a distance from said magnetic field generator and adapted for measuring or determining at least one magnetic field component and/or at least one magnetic field gradient component. The magnetic field generator comprises a multi-pole magnet having a number N of pole pairs that are axially magnetized to generate an N-pole magnetic field that is substantially rotationally symmetric around an axis. The magnet comprises a plurality of grooves and/or elongate protrusions that are arranged in a rotationally symmetric pattern around the axis to provide a substantially constant magnetic field gradient in a central region around said axis.
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