公开(公告)号：US11169039B2

公开(公告)日：2021-11-09

申请号：US16557213

申请日：2019-08-30

Applicant: Melexis Technologies NV

Inventor： Laurent Otte ,  Appolonius Jacobus Van Der Wiel ,  Jian Chen

IPC: G01L9/00 ,  G01L19/06

Abstract: A pressure sensor device comprises a device package (110) arranged to define a cavity (116) having an opening for fluid communication with an internal volume thereof. The cavity (116) comprises a side wall (114, 115). An elongate pressure sensor element (100) is provided and has a proximal end (120) and a distal end (122). The side wall (114, 115) is arranged to hold fixedly the proximal end (120) of the pressure sensor element (100) therein so that the pressure sensor element (100) is cantilever-suspended from the side wall (114, 115) within the cavity (116).

公开(公告)号：US20210293941A1

公开(公告)日：2021-09-23

申请号：US17203382

申请日：2021-03-16

Applicant: Melexis Technologies NV

Inventor： Hans VAN DEN BROECK

IPC: G01S7/497 ,  G01S17/08 ,  H04N17/00 ,  H04N13/204

Abstract: A method for diagnosing an optical sensor includes a photodetector and an integrator. The method comprises exposing the photodetector to incoming light; obtaining an initial integrated signal at an initial frame; at least once executing the steps of changing at least one control parameter of the optical sensor, exposing the photodetector to incoming light, and obtaining one or more subsequent integrated signals at a subsequent frame; obtaining a characteristic of the optical sensor from the obtained integrated signals; comparing the obtained characteristic with a pre-determined characteristic of the optical sensor to diagnose the optical sensor.

公开(公告)号：US11102031B2

公开(公告)日：2021-08-24

申请号：US16423806

申请日：2019-05-28

Applicant: Melexis Technologies NV

Inventor： Martin Bölter ,  Thomas Freitag ,  Jörgen Sturm ,  Anton Babushkin

IPC: G08C17/00 ,  H04L12/40 ,  H04L12/12

Abstract: The present invention relates to a receiver circuit for processing an incoming bit stream from a bus system. The circuit comprises an analog interface for converting the analog signal to a digital input data stream. The interface comprises an analog filter and a switch to process the analog signal before generating the digital input data stream using the filter if, and only if, a selection criterion controlling the switch is met. The circuit comprises a frame decoding unit for decoding a data frame encoded in the digital input data stream in accordance with a CAN protocol, and a frame processing unit that comprises a flexible data rate detector and a recessive bit counter for counting consecutive recessive bits after detecting the flexible data rate frame. The selection criterion is satisfied when the flexible data rate frame is detected and unsatisfied when the recessive bit counter reaches a predetermined number.

公开(公告)号：US11085953B2

公开(公告)日：2021-08-10

申请号：US16512526

申请日：2019-07-16

Applicant: Melexis Technologies NV

Inventor： Asparuh Ivanov Grigorov ,  Johan Vergauwen

IPC: G01R17/10 ,  G01R19/00 ,  G01R31/28

Abstract: The present invention relates to a half-bridge signal processing circuit comprising a first and a second branch. The first branch comprises a first stimulus responsive sense element and a first current source arranged to provide a current to the first sense element. The second branch comprises a second stimulus responsive sense element and a second current source arranged to provide a current to said second sense element. The first and the second branch have a terminal in common. The first branch comprises a first node between said the current source and the first stimulus responsive sense element configured to generate a first signal related to a voltage over the first sense element. The second branch comprises a second node between the second current source and the second stimulus responsive sense element configured to generate a second signal related to a voltage over the second sense element.

公开(公告)号：US20210173088A1

公开(公告)日：2021-06-10

申请号：US17117303

申请日：2020-12-10

Applicant: Melexis Technologies NV

Inventor： Volodymyr SELIUCHENKO ,  Andreas OTT ,  Kyle LEGG

IPC: G01S17/894 ,  G01B11/26 ,  G01S17/46

Abstract: A phase angle error calculation apparatus (100) comprising a light source (102) that emits light according to an indirect time of flight (iToF) measurement technique. A photonic mixer cell (104) generates and stores a plurality of electrical output signals corresponding to a plurality of predetermined phase offset values. A signal processing circuit processes the electrical output signals according to the iToF measurement technique in order to calculate a reference vector and a reference phase angle therefrom. The output signals correspond to measurement at a first level of precision. The circuit processes a subset of output signals according to the iToF measurement technique and calculates a measurement vector and a measurement phase angle therefrom. The subset of the output signals corresponds to measurement at a second level of precision lower than the first level of precision. The circuit calculates a phase angle correction value using the reference phase angle and the measurement phase angle.

公开(公告)号：US20210173054A1

公开(公告)日：2021-06-10

申请号：US17109356

申请日：2020-12-02

Applicant: Melexis Technologies NV

Inventor： Andreas OTT

IPC: G01S7/4865 ,  G01S17/36 ,  G01S17/89 ,  G01S7/48 ,  G01S7/497

Abstract: An optical range calculation apparatus (100) comprises a light source configured to emit light in accordance with an indirect time of flight measurement technique. A photonic mixer cell (102) is configured to generate and store a plurality of electrical output signals respectively corresponding to a plurality of predetermined phase offset values applied (112) in accordance with the indirect time of flight measurement technique. A signal processing circuit (110, 124) is configured to process the plurality of electrical output signals in accordance with the indirect time of flight measurement technique in order to calculate a measurement vector and a measured phase angle from the measurement vector. The signal processing circuit (110, 124) is configured to calculate a phase angle correction value using reference illumination data and to apply the calculated phase angle correction value in order to correct the measured phase angle, and the signal processing circuit is configured to calculate a range using the corrected measured phase angle.

公开(公告)号：US20210018336A1

公开(公告)日：2021-01-21

申请号：US17060758

申请日：2020-10-01

Applicant: MELEXIS TECHNOLOGIES NV

Inventor： Christian SCHOTT ,  Samuel HUBER

IPC: G01D5/14

Abstract: A system for measuring an angular position of a rotor with respect to a stator, wherein the rotor is rotatable around a rotation axis, the system comprising: a magnetic source mounted on the rotor, having at least four magnet poles and providing a periodically repetitive magnetic field pattern with respect to the rotation axis; a sensor mounted on the stator and comprising a plurality of sensor elements for measuring at least one magnetic field component of the magnetic field and for providing a measurement signal thereof; the sensor being located substantially centered around the rotation axis, in a plane substantially perpendicular to the rotation axis at a first distance from the magnetic source; the sensor elements being located substantially on a circle at a second distance from the rotation axis; a calculator that determines the angular position by calculating it from the measurement signals.

公开(公告)号：US20200378834A1

公开(公告)日：2020-12-03

申请号：US16866698

申请日：2020-05-05

Applicant: Melexis Technologies NV

Inventor： Viktor KASSOVSKI ,  Slaveyko Ivanov SLAVEYKOV ,  Aleksandar Ivanov GARGAVELOV ,  Luc BUYDENS

IPC: G01J5/56 ,  G01J5/52

Abstract: A method of measuring temperature based upon a system of equations applying Stefan-Boltzmann's law and using a measurement value for an object to be measured and an ambient temperature value (Ta) comprises: pre-calculating (200, 202) a first vector (LUT1) and a second vector (LUT2). The first vector (LUT1) is a series of values proportional to received power based upon respective temperature values and in respect of a predetermined generic range of temperatures. The second vector (LUT2) is a series of sensitivity characteristic factor values based upon expected measured temperature values and in respect of a predetermined range of expected object measured temperatures. The first vector (LUT1) and the second vector (LUT2) are used (206) to generate a temporary vector (LUTT) of a series of values limited to the ambient temperature value to solve the system of equations in respect of the measurement value for the object, thereby determining (208) a temperature (To) for the object from the measurement value.

公开(公告)号：US20200341125A1

公开(公告)日：2020-10-29

申请号：US16849107

申请日：2020-04-15

Applicant: Melexis Technologies NV

Inventor： Volodymyr SELIUCHENKO

IPC: G01S7/4861 ,  G01S17/10 ,  G01S7/484

Abstract: A method of generating a time domain echo waveform comprises: a triggered source of pulsed electromagnetic radiation (108) emitting (202) a plurality of electromagnetic radiation pulses (132). A plurality of reflected pulses (134) irradiates an electromagnetic radiation detector cell (116), the detector (116) generating a plurality of stored electrical measurements in response thereto. The method also comprises generating a time-varying mixing signal and respectively applying (204, 206) phase-shifted variations thereof to the detector (116) while generating the plurality of electrical measurements. A signal pre-processor (126) reads out (210) the plurality of electrical measurements from the detector (116). A signal reconstruction unit (128) and then generates (300, 302, 500, 502) a spectrum (404, 604) in respect of the electrical measurements and a spectrum (406, 606) of the mixing signal. The signal reconstruction unit (126) generates a reconstruction signal spectrum (408) by deconvolving (304, 504) the spectrum (404, 604) of the stored electrical measurements using the spectrum (406, 606) of the mixing signal and then generates the echo waveform by converting (306, 506) the reconstruction signal spectrum (408) to the time domain.

公开(公告)号：US10811327B2

公开(公告)日：2020-10-20

申请号：US16735117

申请日：2020-01-06

Applicant: Melexis Technologies NV

Inventor： Gunnar Munder ,  Heiko Grimm ,  Thomas Freitag

IPC: G01R31/28 ,  H01L21/66 ,  H01L23/66 ,  H01L23/64 ,  H01L23/00

Abstract: An edge crack monitoring system for an integrated circuit provided on a die, comprises a conductive trace comprising at least a first conductive path for allowing current in a first direction, and a second adjacent conductive path for allowing current in a second direction opposite to the first direction. Both adjacent conductive paths form at least one loop surrounding a semiconductor device on a die. The arrangement of the trace is adapted to provide compensation of EM interferences. The trace comprises two terminals being connectable to a detection circuit for detecting damages by generating a fault signal upon detection of disruption of the conductive trace due to a damage. The conductive trace comprises high resistance portions with a resistance of at least 1 kΩ, adapted for reducing self-resonance.