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公开(公告)号：US12130134B2
公开(公告)日：2024-10-29
申请号：US17971254
申请日：2022-10-21
发明人： Wolfram Kluge
IPC分类号： G01B7/30 , G01B7/14 , G01D5/14 , G01D5/20 , G01R33/00 , G01R33/06 , G01R33/07 , G01R33/09 , G06F15/00
摘要： A sensor circuit for determining an angular position of a rotating object configured for generating or modulating a magnetic field includes: a first sensor for providing a first sensor signal; a second sensor for providing a second sensor signal a signal correction block for receiving the first/second sensor signal or a signal derived therefrom as a first/second input signal, and for receiving a plurality of feedback signals; and configured for providing a first corrected signal and a second corrected signal; an angle calculation block configured for receiving the first and the second corrected signal, and for determining the angular position signal as a function of a ratio of the first and the second corrected signal; a feedback block configured for receiving the angular position signal, and for generating the plurality of feedback signals based on the angular position signal, with an improved linearity.
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公开(公告)号：US20240328827A1
公开(公告)日：2024-10-03
申请号：US18744014
申请日：2024-06-14
发明人： Kyungmin LEE , Jinsoo Choi , Sungbum Park , Sangwook Lee , Bohwan Choi
CPC分类号： G01D5/20 , G01R19/0092 , G01R25/00 , H05B6/1236
摘要： An induction device includes: a wireless power transmission circuit; a current sensor; and at least one processor connected to the wireless power transmission circuit and the current sensor, wherein the at least one processor is configured to output first power for detecting of an external device through the wireless power transmission circuit, identify a first phase of a first current by measuring the first current flowing through a transmission coil of the wireless power transmission circuit using the current sensor while outputting the first power, in a first state where the external device is not in proximity, identify a phase delay value between the first phase of the first current and a second phase of a second current, and identify a second state where the external device is in proximity when the identified phase delay value is equal to or greater than a designated threshold.
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公开(公告)号：US12092492B2
公开(公告)日：2024-09-17
申请号：US17912604
申请日：2021-03-01
发明人： Thilo Stopfer
摘要： The disclosure relates to an inductive linear displacement sensor that includes a primary coil and two secondary coils inductively coupled to the primary coil. The linear displacement sensor has a calibration coil inductively coupled to the primary coil. The calibration coil is arranged such that a signal produced by the calibration coil has only one zero crossing at the center of the linear displacement sensor.
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公开(公告)号：US20240283451A1
公开(公告)日：2024-08-22
申请号：US18608691
申请日：2024-03-18
发明人： Paul M. Walsh , Kofi MAKINWA , Matheus PIMENTA , Çagri GÜRLEYÜK , Dermot MACSWEENEY , Daniel O'KEEFFE , Dennis R. SEGUINE
CPC分类号： H03K17/9547 , G01D5/2006 , G01R27/2611 , G01V3/102 , H03K17/9502
摘要： Front-end circuits that combine inductive and capacitive sensing are described. In one embodiment, an apparatus includes a plurality of inductive elements, an inductive measurement circuit, and a frequency divider circuit. The inductive measurement circuit is to output a first signal with a first frequency. The first signal is associated with an inductance change of one of the inductive elements. A feedback circuit can maintain the sinusoidal operation of the first signal. The frequency divider circuit can generate a second signal with a second frequency that is lower than the first frequency.
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公开(公告)号：US12068744B2
公开(公告)日：2024-08-20
申请号：US18142294
申请日：2023-05-02
CPC分类号： H03K17/9618 , G01D5/202 , H01F5/003 , H02K11/28 , H03K17/97 , H03K2017/9706
摘要： A trigger assembly, for use with a power tool having an electric motor, includes a trigger, a conductor coupled for movement with the trigger, and a printed circuit board. The printed circuit board has an inductive sensor thereon responsive to relative movement between the conductor and the inductive sensor caused by movement of the trigger. An output of the inductive sensor is used to activate the electric motor.
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公开(公告)号：US20240271965A1
公开(公告)日：2024-08-15
申请号：US18441244
申请日：2024-02-14
申请人： KSR IP Holdings, LLC
发明人： Jaesung Kim , Martin Parks , Addison Copeland
摘要： Embodiments herein are directed to a position sensor. The position sensor includes an inductive sensor assembly, a secondary sensor, and a coupler member. The inductive sensor assembly includes a transmitter coil and at least one receiver coil located proximate to the transmitter coil. The at least one receiver coil generating a receiver signal when the transmitter coil is excited. The receiver signal being sensitive to a position of a part. The secondary sensor is positioned within an inner diameter of the transmitter coil. The coupler member is coupled to the part and configured to move with a movement of the part. The coupler member overlies at least a portion of the at least one receiver coil. The coupler member including a body, at least one projecting portion extending from the body and at least one magnet concentrically positioned with the body.
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公开(公告)号：US12061246B2
公开(公告)日：2024-08-13
申请号：US17654624
申请日：2022-03-14
发明人： Paul A. David , William P. Taylor
CPC分类号： G01R33/093 , G01D5/2013 , G01R33/07 , G01R33/09 , G01R33/00
摘要： Methods and apparatus for detecting a magnetic field include a semiconductor substrate, a coil configured to provide a changing magnetic field in response to a changing current in the coil; and a magnetic field sensing element supported by the substrate. The coil receives the changing current and, in response, generates a changing magnetic field. The magnetic field sensing element detects the presence of a magnetic target by detecting changes to the magnetic field caused by the target and comparing them to an expected value.
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公开(公告)号：US12061100B2
公开(公告)日：2024-08-13
申请号：US17913684
申请日：2021-03-23
申请人： Moog Inc.
发明人： William J. Ekhaml , Heath E. Kouns
CPC分类号： G01D5/2046 , G01P3/488 , H02K24/00 , H05K1/181 , H02K2211/03
摘要： A variable reluctance resolver with a stator assembly including a printed circuit board having a first surface and a second surface. A plurality of inductors coupled with the annular printed circuit board first surface, wherein the plurality of inductors are in electrical connection with a power source. The variable reluctance resolver also having a rotor including a body with a first surface and a second surface, an annular recess located in the rotor first surface. The annular recess including a radially inner surface and a radially outer surface, wherein the annular recess defines a width variable with angular position. The plurality of inductors are located at least partially within the annular recess and the rotor is operable to rotate relative to the stator assembly.
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公开(公告)号：US20240249867A1
公开(公告)日：2024-07-25
申请号：US18562647
申请日：2022-05-11
发明人： Alain FONTANET
CPC分类号： H01F27/006 , G01B7/003 , G01D5/2053 , H01F27/2804 , H01F2027/2809
摘要： An inductive position sensor includes, on the one hand, a primary coil and, on the other hand, at least one secondary coil that includes at least two secondary windings each consisting of a plurality of turns formed on two layers of a printed circuit board. Each of the turns has a first generally concave portion placed on one layer of the printed circuit board and a second generally concave portion placed on another layer of the printed circuit board. Among the first portions and second portions of the turns of the two secondary windings, at least some of these first and second portions are arranged in mirror symmetry on either side of a transverse separation plane, this transverse separation plane being located between the two secondary windings and being orthogonal to the longitudinal direction.
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公开(公告)号：US20240247988A1
公开(公告)日：2024-07-25
申请号：US18443539
申请日：2024-02-16
发明人： Udo Ausserlechner
CPC分类号： G01L3/105 , G01B7/30 , G01D5/20 , G01D5/2006 , G01D5/2053 , G01L5/0042 , G01L5/26
摘要： The described techniques are directed to inductive torque sensors that implement independent target coil and pickup coil systems. By utilizing the various principles of inductive angle sensors, and as a result of the specific physical arrangement of target coils, the inductive torque sensor may independently obtain a rotational position (i.e., mechanical angle) of the rotatable input shaft via one pickup coil system, and a rotational position (i.e., mechanical angle) of the rotatable output shaft via another pickup coil system. Combiner circuitry is also provided to calculate the torsion angle using the signals induced in each of two separate pickup coil systems. By using different k-fold symmetry periodicities in the target coils with respect to the coil configurations, the inductive torque sensor advantageously reduces or eliminates mutual coupling between the different target coil systems and provide robustness to stray or external electromagnetic fields.
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