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公开(公告)号：US10418962B2
公开(公告)日：2019-09-17
申请号：US15874259
申请日：2018-01-18
发明人： Heikki Kuisma
IPC分类号： H03H3/007 , G01C19/5726 , G01C19/5776 , H03H9/24 , G01R33/028 , G01R33/00
摘要： The present invention relates to a method and a device for stabilization of amplitude of a mechanical vibration of a mechanical resonator in a microelectromechanical sensor device. The method comprises exciting the mechanical resonator with an oscillating excitation force by an input transducer. The input transducer is driven with an input AC voltage having essentially constant amplitude at a frequency that deviates from the resonant frequency of the mechanical resonator by a first frequency difference. The first frequency difference is configured to stabilize the amplitude of the mechanical vibration.
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公开(公告)号：US10411524B2
公开(公告)日：2019-09-10
申请号：US15069570
申请日：2016-03-14
IPC分类号： H02J50/90 , G01R33/02 , H01F38/14 , H02J50/10 , G01D5/20 , H04B5/00 , G01R33/028 , B60L53/12 , B60L53/38 , B60L53/39 , B60L53/36
摘要： An apparatus for determining a relative position of a wireless power transmitter from a wireless power receiver is provided. The apparatus comprises a plurality of sense coils, each configured to generate a respective signal under influence of an alternating magnetic field comprising a plurality of wave pulses, each wave pulse occurring in a respective time slot of a plurality of time slots. The apparatus further comprises a processor configured to determine the relative position of the wireless power transmitter from the wireless power receiver based on the respective signal from each of the plurality of sense coils.
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公开(公告)号：US10401233B2
公开(公告)日：2019-09-03
申请号：US15504428
申请日：2015-08-25
发明人： David P. Erickson , Chaodi Li , Cheryl Lee Senger Elsbernd , Jia Hu , Andrew P. Bonifas , Orlin B. Knudson , Richard L. Rylander
IPC分类号： G01K7/32 , G01N19/10 , G01N29/14 , G01N29/24 , G01N29/46 , G01R33/00 , G01R33/028 , A61L2/28 , G01K7/36 , G01K11/00
摘要： Some aspects of the present disclosure feature a sensing device comprising a magnetic bias layer, a resonator, a spacer, and a housing. The spacer includes an environmental change receptor. The thickness of the environmental change receptor rapidly increases in response to a change to an environment variable.
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公开(公告)号：US10333355B2
公开(公告)日：2019-06-25
申请号：US15656927
申请日：2017-07-21
摘要： A method of determining a value of a magnetic characteristic of a wireless-power receiver system includes: obtaining a first frequency indication of a first resonant frequency of a power reception circuit of the wireless-power receiver system corresponding to a power transmit circuit and the power reception circuit being in a first state having a first combined circuit configuration; obtaining a second frequency indication of a second resonant frequency of the power reception circuit corresponding to the combination of the power transmit circuit and the power reception circuit being in a second state having a second combined circuit configuration, the first combined circuit configuration differing from the second combined circuit configuration by at least one of component content or a value of at least one component; and using the first frequency indication and the second frequency indication to determine the value of the magnetic characteristic of the wireless-power receiver system.
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公开(公告)号：US20190162798A1
公开(公告)日：2019-05-30
申请号：US15826425
申请日：2017-11-29
IPC分类号： G01R33/028 , G01R33/28 , C01B32/182 , C01B33/40 , G01R33/44
摘要： Atomic forcipes is a nanomechanical magnetoelectric element having an insulator, an atom-thick conductive graphene sheet suspended as a heterostructure onto the insulator, and a gallery between the insulator and the graphene sheet. Atomic forcipes can be actuated acoustically or electromagnetically. Activation generates a chemical potential of directionally enhanced chemical reaction rate. Atomic forcipes can be formed by selecting enhanced graphene having a particle size, providing piezoelectric smectite clay of the particle size, combining graphene particles with clay, adding a compatibilizer, and irradiating with ultrasound, UV, or microwaves. Isotope separation apparatus and methods are supported by atomic forcipes. A method by mixing an aqueous phase suspension of atomic forcipes with nuclear magnetic isotope (NMI) ions, applying ultrasound to promote NMI ion intercalation, applying ultraviolet light to generate free radicals on the NMI ions, and extracting enriched NMI ions from the piezoelectric sheets. Another method employs nuclear spin using nuclear magnetic stiction.
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公开(公告)号：US10280648B2
公开(公告)日：2019-05-07
申请号：US15495829
申请日：2017-04-24
申请人： GOOGLE LLC
发明人： Andrew W. Goldenson
IPC分类号： E05B45/06 , E05B45/08 , G01R33/02 , G01B7/30 , G01R33/028 , E05B47/00 , G01D5/14 , G08B21/18
摘要： A door lock detection system is disclosed. The system includes a magnet flexibly attached to a strike plate. The strike plate includes an opening. The magnet extends across the opening of the strike plate in a first orientation when a bolt does not extend into the opening of the strike plate. The magnet is configured to be deflected from the first orientation to a second orientation, distinct from the first orientation, in response to the bolt being extended into the opening of the strike plate. The system includes a magnetometer configured to detect one or more magnetic fields of the magnet that is flexibly attached to the strike plate in the first orientation and in the second orientation.
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公开(公告)号：US20190113133A1
公开(公告)日：2019-04-18
申请号：US15833834
申请日：2017-12-06
发明人： Seunghyun Woo , Gi Beom Hong , Daeyun An
IPC分类号： F16H59/08 , G01R33/028
摘要： A vehicle configured to receive an input of a shift command corresponding to a change in position of a vehicle accessory seated in a shift command input portion and a control method for the same, may include a vehicle accessory; a shift command input portion in which the vehicle accessory is configured to be seated and which receives an input of a shift command corresponding to a change in position of the seated vehicle accessory; a shift device configured to change a shift range; and a controller configured to control the shift device to change the shift range in accordance with the shift command input by the shift command input portion.
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公开(公告)号：US10175306B1
公开(公告)日：2019-01-08
申请号：US15366330
申请日：2016-12-01
申请人： John E. Miesner
发明人： John E. Miesner
IPC分类号： G01R33/02 , G01R33/028
摘要： An exemplary magnetic flux sensor in accordance with the present invention is characterized by an electrical output that is proportional to the total static and dynamic flux passing normally through a large area. An oscillating electrical current passing down a conducting area produces Lorentz forces, which are transferred to piezoelectric areas. The piezoelectric areas produce electrical voltage at the oscillation frequency whereby amplitude is proportional to the total magnetic flux passing normally through the conducting area. Demodulating the voltage provides an electrical signal with high sensitivity, dynamic range, and noise immunity.
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公开(公告)号：US10168398B2
公开(公告)日：2019-01-01
申请号：US15287740
申请日：2016-10-07
申请人： Fu-Te Yuan , Jen-Tzong Jeng , Meng-Huang Lai
发明人： Fu-Te Yuan , Jen-Tzong Jeng , Meng-Huang Lai
IPC分类号： G01R33/02 , G01R33/09 , G01R33/12 , G01R15/20 , G01R33/028 , G01R33/038 , G01V3/10 , G01C17/02
摘要： A magnetic field sensing apparatus including a magnetic flux concentrator and a plurality of magnetoresistance units is provided. The magnetic flux concentrator has a top surface, a bottom surface opposite to the top surface, and a plurality of side surfaces connecting the top surface and the bottom surface. The magnetoresistance units are respectively disposed beside the side surfaces. The magnetoresistance units are electrically connected to form at least one kind of Wheatstone full bridge in three different periods, so as to measure magnetic field components in three different directions, respectively, and to cause the at least one kind of Wheatstone full bridge to output three signals corresponding to the magnetic field components in the three different directions, respectively.
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公开(公告)号：US10094888B2
公开(公告)日：2018-10-09
申请号：US14947968
申请日：2015-11-20
申请人： APPLE INC.
发明人： Henry H. Yang , Jian Guo
IPC分类号： G01R33/00 , G01R33/022 , G01R33/028
摘要： Systems, methods, and computer-readable media for calibrating the offset of a magnetometer assembly with reduced power are provided. In one embodiment, a method for operating an assembly may include determining a difference between a current signal measurement output component of a first magnetometer sensor and a previous signal measurement output component of the first magnetometer sensor, comparing the determined difference with a current threshold value, and generating an assembly output based on the comparing, where, when the determined difference is greater than the current threshold value, the generating may include providing a first assembly output using a current offset output component of a second magnetometer sensor, and, when the determined difference is less than the current threshold value, the generating may include providing a second assembly output using a previous offset output component of the second magnetometer sensor.
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