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    Detection device for detecting dynamic quantity exerted on mechanical system including first and second mechanical oscillators
    1.
    发明授权
    Detection device for detecting dynamic quantity exerted on mechanical system including first and second mechanical oscillators 有权

    公开(公告)号：US10928198B2

    公开(公告)日：2021-02-23

    申请号：US15690710

    申请日：2017-08-30

    申请人： Kabushiki Kaisha Toshiba

    发明人： Yohei Hatakeyama ,  Tetsuro Itakura

    IPC分类号： G01C19/56 ,  G01C19/5776 ,  G01C19/5621 ,  G01C19/5614

    摘要： A detection device detects a dynamic quantity exerted on a detection mechanical system including first and second mechanical oscillators. The detection device includes first to third transducers, a canceller, a low-pass filter, and an inverting amplification unit. The first transducer detects the first mechanical oscillator position in a first direction to output a first signal. The second transducer detects the second mechanical oscillator position in a second direction to output a second signal. The canceller inverts a direction in which a signal detected by the second transducer from the second mechanical oscillator varies according to the first signal. The third transducer detects the second mechanical oscillator position in the second direction to output a third signal. The inverting amplification unit gives a control signal generated by inverting the third signal to a second actuator moving the second mechanical oscillator.

    ACCELEROMETER SYSTEM ENCLOSING GAS
    2.
    发明申请
    ACCELEROMETER SYSTEM ENCLOSING GAS 审中-公开

    公开(公告)号：US20200309524A1

    公开(公告)日：2020-10-01

    申请号：US16371657

    申请日：2019-04-01

    申请人： Honeywell International Inc.

    发明人： Chad Fertig ,  Arthur Savchenko ,  Steven Tin ,  Neil Krueger ,  Joshua Dorr

    IPC分类号： G01C19/5614 ,  G01C19/5621

    摘要： This disclosure is related to devices, systems, and techniques for determining, using an electro-opto-mechanical accelerometer system, a frequency value in order to determine an acceleration value. For example, an accelerometer system includes a light-emitting device configured to emit an optical signal and a circuit. The circuit is configured to determine a frequency value corresponding to the optical signal and determine an acceleration value based on the frequency value. Additionally, the accelerometer system includes a housing that encloses the light-emitting device, the circuit, and Helium gas, where the Helium gas defines a partial pressure within a range between 0.1 torr and 760 torr.

    Demodulation phase calibration
    3.
    发明授权
    Demodulation phase calibration 有权

    公开(公告)号：US10267650B2

    公开(公告)日：2019-04-23

    申请号：US15173530

    申请日：2016-06-03

    申请人： InvenSense, Inc.

    发明人： Doruk Senkal ,  Joseph Seeger

    IPC分类号： G01C25/00 ,  G01C19/5614 ,  G01C19/5649 ,  G01C19/5726 ,  G01C19/5776

    摘要： A method includes receiving a signal from a sensor. The signal includes a first in-phase component and a first quadrature component. The first in-phase and quadrature components are identified. A rate signal is applied to the sensor and the sensor generates a sensed rate signal. A second in-phase and quadrature components associated with the sensed rate signal are determined. A phase error based on the first and the second in-phase components, and the first and the second quadrature components is determined. The method may further include reducing error in measurements associated with the sensor by dynamically compensating for the determined phase error, e.g., by modifying a clock signal, by changing a demodulation phase of a demodulator used to identify the in-phase and the quadrature components.

    Circuit device, physical quantity detection device, electronic apparatus, and moving object
    4.
    发明授权
    Circuit device, physical quantity detection device, electronic apparatus, and moving object 有权

    公开(公告)号：US10254115B2

    公开(公告)日：2019-04-09

    申请号：US15044217

    申请日：2016-02-16

    申请人： Seiko Epson Corporation

    发明人： Hideo Haneda ,  Yasuhiro Sudo

    IPC分类号： G01C19/56 ,  G01C19/5614

    摘要： A circuit device includes a drive circuit which drives a vibrating reed; a detection circuit which outputs physical quantity information corresponding to the physical quantity, based on a detection signal according to a physical quantity that is output from the vibrating reed; and an arithmetic processing unit which performs arithmetic processing, based on the physical quantity information from the detection circuit and time interval information that is defined by a drive frequency of the drive circuit.

    Angular velocity sensor
    6.
    发明授权
    Angular velocity sensor 有权

    公开(公告)号：US10132631B2

    公开(公告)日：2018-11-20

    申请号：US15123756

    申请日：2015-04-17

    申请人： DENSO CORPORATION

    发明人： Minekazu Sakai ,  Naoki Yoshida ,  Kiyomasa Sugimoto

    IPC分类号： G01C19/5607 ,  G01C19/5614 ,  G01C19/5621 ,  G01C19/5628 ,  G01C19/5642 ,  H01L41/047 ,  H03H9/21 ,  H01L41/04 ,  H01L41/113

    摘要： An angular velocity sensor includes a first substrate having first and second surfaces, a vibrating member disposed on the first substrate and including a drive piece capable of vibrating along the first substrate, a second substrate disposed on the first surface side, a first drive piece control electrode, a first drive piece auxiliary electrode, and a first drive piece control circuit applying a voltage to the first drive piece auxiliary electrode. The first drive piece control circuit adjusts, based on the capacitance generated between the first drive piece control electrode and the first drive piece auxiliary electrode, the voltage to be applied to the first drive piece auxiliary electrode to maintain a constant distance between the first drive piece control electrode and the first drive piece auxiliary electrode.

    PHYSICAL QUANTITY DETECTION APPARATUS, ELECTRONIC DEVICE, AND MOBILE BODY
    7.
    发明申请
    PHYSICAL QUANTITY DETECTION APPARATUS, ELECTRONIC DEVICE, AND MOBILE BODY 审中-公开

    公开(公告)号：US20180328731A1

    公开(公告)日：2018-11-15

    申请号：US15774146

    申请日：2016-10-27

    申请人： Seiko Epson Corporation ,  DENSO CORPORATION

    发明人： Kiminori NAKAJIMA ,  Naoki YOSHIDA

    IPC分类号： G01C19/5614 ,  G01C19/5649

    摘要： A physical quantity detection apparatus includes a vibrator which outputs a detection signal in accordance with a physical quantity and a drive circuit which drives the vibrator to oscillate, wherein the drive circuit includes: an oscillation detecting unit which detects an oscillating state or a non-oscillating state of the vibrator based on a drive signal of the vibrator; a start-up oscillation unit which assists an oscillating operation of the vibrator when a detection result of the oscillation detecting unit represents the non-oscillating state; and a switching count monitoring unit which detects that the number of times switching is performed between the oscillating state and the non-oscillating state in the oscillation detecting unit has exceeded a set upper limit number of times.

    Detection device, sensor, electronic apparatus, and moving object
    8.
    发明授权
    Detection device, sensor, electronic apparatus, and moving object 有权
    检测装置，传感器，电子设备和移动物体

    公开(公告)号：US09506758B2

    公开(公告)日：2016-11-29

    申请号：US14217581

    申请日：2014-03-18

    申请人： Seiko Epson Corporation

    发明人： Katsuhiko Maki ,  Takashi Nomiya

    IPC分类号： G01C19/56 ,  G01C19/5776 ,  G01C19/5762 ,  G01C19/5614 ,  G01C19/5726

    CPC分类号： G01C19/5776 ,  G01C19/5614 ,  G01C19/5726 ,  G01C19/5762

    摘要： A detection device includes a driving circuit that drives a vibrator, and a detection circuit that receives a detection signal from the vibrator and performs a detection process of detecting a physical quantity signal corresponding to a physical quantity from the detection signal. The driving circuit performs intermittent driving in which the vibrator is driven in a driving period, and is not driven in a non-driving period, and the detection circuit performs the detection process of the physical quantity signal in the non-driving period of the intermittent driving.

    摘要翻译： 检测装置包括驱动振动器的驱动电路和接收来自振动器的检测信号的检测电路，并根据检测信号执行检测与物理量对应的物理量信号的检测处理。 驱动电路进行间歇驱动，其中振动器在驱动期间被驱动，并且不在非驱动时段中被驱动，并且检测电路在间歇的非驱动时段内执行物理量信号的检测处理 驾驶