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公开(公告)号：US20240426865A1
公开(公告)日：2024-12-26
申请号：US18662884
申请日：2024-05-13
Applicant: THALES
Inventor： Matthieu DUPONT-NIVET , Benjamin WIRTSCHAFTER , Soizic HELLO
Abstract: An ultracold-atom sensor includes an atom chip (ACh) comprising a first and a second waveguide (CPWX1, CPWX2) that are suitable for propagating microwave waves and DC currents, at least a first conductive wire and a second conductive wire (WId, WId1) the respective projections of which are secant at a point defining a first crossing point (C1), an atom generation device (ACG), a power supply device (PSD) comprising at least one microwave generator (GMW) and at least one DC current generator (GDC), the power supply device being configured to apply, to the first and second waveguides and to spatially separate the two traps, the microwave signals in order to initiate the spatial separation, and then the CMW electric currents instead of the microwave signals in order to maintain the spatial separation.
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公开(公告)号：US12166453B1
公开(公告)日：2024-12-10
申请号：US18210371
申请日：2023-06-15
Applicant: SiTime Corporation
Inventor： Aaron Partridge , Sassan Tabatabaei , Lijun Chen , Kamran Souri
IPC: H03B5/36 , G01C19/56 , G01C19/5726 , H03F3/04 , H03F3/70
Abstract: An oscillator includes a resonator, sustaining circuit and detector circuit. The sustaining circuit receives a sense signal indicative of mechanically resonant motion of the resonator generates an amplified output signal in response. The detector circuit asserts, at a predetermined phase of the amplified output signal, one or more control signals that enable an offset-reducing operation with respect to the sustaining amplifier circuit.
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公开(公告)号：US12025588B2
公开(公告)日：2024-07-02
申请号：US17539686
申请日：2021-12-01
Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
Inventor： Chung-Yuan Su , Chin-Fu Kuo , Liang-Ying Liu , Chao-Ta Huang
Abstract: A microelectromechanical sensing apparatus with calibration function comprises a microelectromechanical sensor and an IC chip. The microelectromechanical sensor comprises a proof mass, a movable driving electrode and a movable sensing electrode disposed on the proof mass, and a stationary driving electrode and stationary sensing electrode disposed on a substrate, wherein the sensing electrodes output a sensing signal when the proof mass vibrates. The IC chip comprises a conversion module electrically connected to the microelectromechanical sensor, wherein the conversion module converts the sensing signal into an input spectrum signal, and a calibration module electrically connected to the conversion module, wherein the calibration module receives the input spectrum signal and transforms the input spectrum signal into an output spectrum signal; wherein, the output spectrum signal is equal amplitude spectrum signal when the microelectromechanical sensor is subjected to an equal amplitude vibration and the input spectrum signal is an unequal amplitude spectrum signal.
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公开(公告)号：US20240093994A1
公开(公告)日：2024-03-21
申请号：US18467306
申请日：2023-09-14
Applicant: SEIKO EPSON CORPORATION
Inventor： Yoshiyuki MATSUURA
IPC: G01C19/56 , G01P1/00 , G01P15/125 , G01P15/18
CPC classification number: G01C19/56 , G01P1/00 , G01P15/125 , G01P15/18
Abstract: An inertial measurement device includes: a first case and a second case; a board that is disposed in a space formed by the first case and the second case, that includes a first surface and a second surface, and in which a first inertial sensor is disposed at the first surface; a first filling material configured to fill between the first surface of the board and the first case and between the first inertial sensor and the first case; and a second filling material configured to fill between the second surface of the board and the second case.
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公开(公告)号：US11913808B2
公开(公告)日：2024-02-27
申请号：US17276683
申请日：2019-09-16
Applicant: Cambridge Enterprise Limited
Inventor： Xin Zhou , Chun Zhao , Ashwin A. Seshia
IPC: G01P15/097 , G01C19/56 , G01C19/5726 , G01C19/5755 , G01C25/00 , G01P15/125 , G01P21/00 , G05D19/02 , G01P15/08
CPC classification number: G01C25/005 , G01P15/097 , G01P21/00 , G01C19/56 , G01C19/5726 , G01C19/5755 , G01P2015/0814 , G01P15/125 , G05D19/02
Abstract: There is provided an inertial sensor comprising a frame, a resonator assembly fixed to the frame comprising a first and second resonator coupled to one another by a mechanical coupling and a drive means coupled to the resonator assembly for driving the first and second resonators to vibrate. The resonator assembly is configured such that energy is transferred between the first and second resonators through the mechanical coupling. An amount of energy transferred through the mechanical coupling is dependent on the value of an input measurand acting on one of the first and second resonators. The inertial sensor also comprises a pumping means coupled to the resonator assembly for applying a pumping signal to the resonator assembly, the pumping means controlled by electrical circuitry, and a sensor assembly configured to detect the amplitude of oscillation of the first resonator at a first resonant frequency and the amplitude of oscillation of the second resonator at a second resonant frequency. The electrical circuitry is configured to control the pumping means to apply a pumping signal that has a frequency substantially equal to a difference between the first resonant frequency and the second resonant frequency. When the input measurand has the first value, the signal from the pumping means adjusts an amplitude ratio of the amplitudes of oscillation of the first and second resonator detected by the sensor assembly so that the amplitude ratio is within a predetermined amplitude ratio range over an expected range of input measurand values. An output of the inertial sensor is based on the amplitude ratio.
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Patent Agency Ranking
公开(公告)号：US20230040197A1
公开(公告)日：2023-02-09
申请号：US17967927
申请日：2022-10-18
Applicant: SEIKO EPSON CORPORATION
Inventor： Tetsuya OTSUKI , Tsugio IDE
IPC: H03H9/215 , H03H9/05 , H03H9/17 , B81B3/00 , H03H9/02 , H03H3/007 , H03L1/04 , H03L1/02 , G01C19/5621 , G01C19/56 , H03B5/32 , H03H9/10 , H03H9/19 , B81B7/00
Abstract: A vibrator device includes a vibration element including a vibration portion and a fixed portion, a supporting member to which the fixed portion is attached to support the vibration element, and a first substrate to which the supporting member is attached, the supporting member includes a attaching portion attached to the first substrate, and A1≥A2 is satisfied in a case where an area of a rectangular region including the fixed portion is A1 and an area of a rectangular region including the attaching portion is A2 in a plan view seen from a thickness direction of the vibration element.
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公开(公告)号：US11566898B2
公开(公告)日：2023-01-31
申请号：US17463689
申请日：2021-09-01
Applicant: Georgia Tech Research Corporation
Inventor： Haoran Wen , Farrokh Ayazi
IPC: G01C19/5684 , G01C19/56 , G01C19/5698 , G01C19/5719 , H03H9/02 , G01C19/5677
Abstract: A bulk acoustic wave resonator apparatus includes a resonator member, at least one anchor structure coupling the resonator member to a substrate, and a comb-drive element connected to the resonator member. The comb-drive element includes first comb fingers protruding from the resonator member, and second comb fingers of a different material than the first comb fingers interdigitated with the first comb fingers to define sub-micron capacitive gaps therebetween. Respective sidewalls of the first comb fingers are oppositely-tapered relative to respective sidewalls of the second comb fingers along respective lengths thereof, such that operation of the comb-drive element varies the sub-micron capacitive gaps at the respective sidewalls thereof. Respective tuning electrodes, which are slanted at respective angles parallel to an angle of respective sidewalls of the resonator member, may also be provided for quadrature tuning between different resonance modes of the resonator member. Related devices and fabrication methods are also discussed.
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公开(公告)号：US11307034B2
公开(公告)日：2022-04-19
申请号：US16337581
申请日：2018-09-04
Inventor： Ying Wang , Tien Lun Ting , Xue Cao , Peizhi Cai , Hao Liu , Chuncheng Che , Hailin Xue , Xibin Shao , Jie Wu
Abstract: A gyroscope, an electronic device and a method of detecting an angular velocity. The gyroscope includes: a photoelectric detector and a light source, wherein the light source is movable relative to the photoelectric detector, and light emitted by the light source is able to be irradiated onto the photoelectric detector.
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公开(公告)号：US11293778B1
公开(公告)日：2022-04-05
申请号：US15353417
申请日：2016-11-16
Applicant: TIAX LLC
Inventor： Thomas Kotwal , Michael Jacob Rutberg , Matthew Wiggins , J. Thomas Fowler
Abstract: An attitude sensor system with automatic bias correction having a primary attitude sensor wherein the primary attitude sensor comprises at least one accelerometer and an auxiliary sensor system configured to automatically estimate a bias of the accelerometer of the primary attitude sensor such that the resulting error is removed from an output of the attitude sensor system.
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公开(公告)号：US11255736B2
公开(公告)日：2022-02-22
申请号：US16286708
申请日：2019-02-27
Applicant: KABUSHIKI KAISHA TOSHIBA
Inventor： Yongfang Li
Abstract: A vibration sensor according to an embodiment includes a laminated body. The laminated body includes a support layer a first end of which is fixed; a piezoelectric layer on the support layer; an insulating layer disposed between the support layer and the piezoelectric layer; a common electrode disposed on a first principal surface of the piezoelectric layer; a first sensing electrode disposed in a first area on a second principal surface of the piezoelectric layer on the side opposite to the first principal surface; and a drive electrode disposed in a second area different from the first area on the second principal surface of the piezoelectric layer. The first area is located near the first end of the support layer.
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