利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

10 条记录 (耗时 0.015 秒)

    RANDOMIZED SPINNING OF HALL PLATES
    1.
    发明公开
    RANDOMIZED SPINNING OF HALL PLATES 审中-公开

    公开(公告)号：EP3591417A1

    公开(公告)日：2020-01-08

    申请号：EP18182041.6

    申请日：2018-07-05

    申请人： Melexis Technologies SA

    发明人： RAMAN, Johan ,  ROMBOUTS, Pieter

    IPC分类号： G01R33/07

    摘要： 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.

    BRIDGE SENSOR BIASING AND READOUT SYSTEM
    2.
    发明公开
    BRIDGE SENSOR BIASING AND READOUT SYSTEM 审中-公开

    公开(公告)号：EP3995801A1

    公开(公告)日：2022-05-11

    申请号：EP20206824.3

    申请日：2020-11-10

    申请人： Melexis Technologies SA

    发明人： RAMAN, Johan ,  ROMBOUTS, Pieter

    IPC分类号： G01L9/00

    摘要： A sensor system (100) for measuring a physical quantity. The sensor system (100) comprising: a bridge sensor (110) comprising at least two terminal pairs, a current source (150) for applying a bias current between the bias terminal pair, resulting in a differential sensor signal on a readout terminal pair (113, 114), wherein the differential sensor signal is indicative for the physical quantity, and an amplifier (120) comprising a first input node (121) and a second input node (122) for receiving the differential signal and at least one output node (123, 124), wherein the amplifier (120) is configured for amplifying the differential sensor signal and putting the resulting signal on the at least one output node (123, 124), wherein the sensor system (100) is configured such that, in operation, the amplifier (120) is powered by at least part of the bias current.

    SENSOR DEVICE AND SYSTEM WITH NON-LINEARITY COMPENSATION
    3.
    发明公开
    SENSOR DEVICE AND SYSTEM WITH NON-LINEARITY COMPENSATION 审中-公开

    公开(公告)号：EP4170292A1

    公开(公告)日：2023-04-26

    申请号：EP22199529.3

    申请日：2022-10-04

    申请人： Melexis Technologies SA

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

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

    摘要： A sensor circuit (620) for measuring a physical quantity, the sensor circuit comprising: a signal acquisition circuit (640) comprising a sensor (621, 622) to provide an input signal (vl, v2) related to the physical quantity; a processing circuit (650) to receive said input signal (vl, v2) and for providing an output signal (θcorr) representative of the physical quantity; the processing circuit comprising a closed loop comprising: a first sub-circuit (660) arranged for receiving said input signal (vl, v2) and a feedback signal (fbi, fbq), and configured for providing a first signal (θest); a frequency dependent filter (632) for receiving and filtering said first signal (θest), and for providing the output signal (θcorr); a second sub-circuit (670) for receiving and converting said filtered signal (θcorr) into said feedback signal (fbi, fbq) using a non-linear function.

    POSITION SENSING DEVICE
    5.
    发明公开
    POSITION SENSING DEVICE 审中-公开

    公开(公告)号：EP3517897A1

    公开(公告)日：2019-07-31

    申请号：EP18153346.4

    申请日：2018-01-25

    申请人： Melexis Technologies SA

    发明人： RAMAN, Johan ,  CLOSE, Gael ,  ROMBOUTS, Pieter

    IPC分类号： G01D5/243 ,  G01D18/00

    摘要： The present invention relates to a position sensing device for measuring a position, comprising a position sensing device for measuring a position, comprising
    - a plurality of sensors (2) arranged to produce sense signals each being a function of an input phase (θ i ) representative of a position to be measured,
    -a combiner circuit (4) arranged to generate an error signal (5) by combining said sense signals according to an array of weight factors,
    - a processing block (6) arranged for filtering said error signal and for outputting a phase value representative of said position,
    - a feedback loop comprising a feedback signal unit (8) arranged for receiving said output phase value and for adjusting based on said received output phase value said array of weight factors.

    BRIDGE SENSOR BIASING AND READOUT
    6.
    发明公开
    BRIDGE SENSOR BIASING AND READOUT 审中-公开

    公开(公告)号：EP3396397A1

    公开(公告)日：2018-10-31

    申请号：EP17168592.8

    申请日：2017-04-28

    申请人： Melexis Technologies SA

    发明人： RAMAN, Johan ,  ROMBOUTS, Pieter

    IPC分类号： G01R33/07 ,  G01D3/02

    摘要： The present invention relates to a circuit (1) for biasing and reading out a bridge sensor structure (2). The circuit comprises at least two pairs of connection terminals (3), each pair adapted for connecting to complementary terminals of the bridge. The circuit comprises an excitation signal generator (4) for generating an excitation signal for biasing and/or exciting the bridge, in which the excitation signal is provided as a non-constant periodic continuous function of time. The circuit also comprises a detection circuit (5) for obtaining the sensor signal from the bridge sensor structure (2) by electrically connecting the detection circuit to any pair of connection terminals (3) while applying the excitation signal to another pair. The circuit comprises a switch unit (6) for switching the electrical excitation signal from being supplied to a first pair to another pair of the connection terminals and for switching the detection circuit from being connected to a second pair to another pair of the connection terminals, and a controller (7) for controlling the switch unit (6) to switch the first pair from being connected to the excitation signal generator (4) at a time when the generated excitation signal is in a predetermined signal range where the excitation signal value is substantially equal to zero.

    OFFSET COMPENSATION CIRCUIT FOR A TRACKING LOOP
    10.
    发明公开
    OFFSET COMPENSATION CIRCUIT FOR A TRACKING LOOP 审中-公开

    公开(公告)号：EP3528388A1

    公开(公告)日：2019-08-21

    申请号：EP18157510.1

    申请日：2018-02-19

    申请人： Melexis Technologies SA

    发明人： RAMAN, Johan ,  ROMBOUTS, Pieter

    IPC分类号： H03M1/06 ,  H03M1/48 ,  G01R33/07 ,  H03M1/12 ,  H03M1/66

    摘要： The present invention relates to an offset compensation circuit comprising
    - an error signal generation block (10) arranged for receiving an input phase ( θ i ) and an output phase ( θ o ) and for generating an error signal indicative of an error between said input phase and said output phase,
    - means (20) for combining said error signal with an offset compensation signal, yielding an offset compensated signal,
    - a loop filter (30) arranged for receiving said offset compensated signal and for outputting said output phase ( θ o ),
    - an offset compensation block (40) arranged for receiving said output phase ( θ o ) and for determining said offset compensation signal, said offset compensation signal comprising at least a contribution proportional to a periodic function of said output phase.