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    DEVICE AND METHOD FOR ATTENUATING AN ANTI-RESONANT CIRCUIT
    12.
    发明申请
    DEVICE AND METHOD FOR ATTENUATING AN ANTI-RESONANT CIRCUIT 审中-公开
    用于阻尼平行振动电路的装置和方法

    公开(公告)号：WO2006061305A2

    公开(公告)日：2006-06-15

    申请号：PCT/EP2005055939

    申请日：2005-11-14

    Applicant: BOSCH GMBH ROBERT ,  REICHE MARTIN

    Inventor： REICHE MARTIN

    IPC: H03B5/12

    CPC classification number: G01S7/524 ,  B06B1/0215 ,  B06B2201/30 ,  H03J3/20 ,  H03J5/246 ,  Y10S367/903

    Abstract: The invention relates to a device for attenuating an anti-resonant circuit comprising a first capacitor (5) and a secondary inductance (4b). A signal (1) can be coupled into the anti-resonant circuit by means of a primary inductance. An attenuation member is connected in parallel to a switching device (S 1 ) and to the secondary inductance (4b) and/or the primary inductance (4a).

    Abstract translation: 本发明涉及一种用于阻尼并联谐振电路的装置，其具有第一电容（5）和第二电感（4b）。 通过初级电感，信号（1）可以耦合到并联谐振电路中。 平行于次级电感（4b）和/或初级电感（4a），衰减器与开关器件（S1）并联连接。

    VERFAHREN ZUM BETREIBEN EINES ULTRASCHALLSENSORS EINES KRAFTFAHRZEUGS, ULTRASCHALLSENSORVORRICHTUNG, FAHRERASSISTENZSYSTEM SOWIE KRAFTFAHRZEUG
    13.
    发明公开
    VERFAHREN ZUM BETREIBEN EINES ULTRASCHALLSENSORS EINES KRAFTFAHRZEUGS, ULTRASCHALLSENSORVORRICHTUNG, FAHRERASSISTENZSYSTEM SOWIE KRAFTFAHRZEUG 审中-公开
    一种用于操作超声传感器的机动车辆，换能器装置，驾驶员辅助系统和机动车

    公开(公告)号：EP3146360A1

    公开(公告)日：2017-03-29

    申请号：EP15716814.7

    申请日：2015-04-17

    Applicant: Valeo Schalter und Sensoren GmbH

    Inventor： HALLEK, Michael ,  LUDWIG, Michael

    IPC: G01S15/93 ,  G01S7/52 ,  G01S7/526 ,  H04R3/00

    CPC classification number: G01S15/931 ,  B06B1/0215 ,  B06B2201/30 ,  G01S7/52004 ,  G01S7/52006 ,  G01S7/524 ,  G01S7/526 ,  G01S2015/932

    Abstract: The invention relates to a method for operating an ultrasonic sensor (2) of a motor vehicle, in which method a transmission signal is emitted with an excitation frequency during a transmission phase by exciting a diaphragm (4) of the ultrasonic sensor (2), subsequently during a damping phase (10) the diaphragm (4) is excited with a damping frequency which is in anti-phase with respect to the excitation frequency, and subsequently during a reception phase (11) mechanical oscillation of the diaphragm (4) is detected, wherein during the damping phase (10) an amplitude of the mechanical oscillation of the diaphragm (4) is detected, wherein during the damping phase (10) it is determined whether the amplitude undershoots (S2) an oscillation threshold value (12) for a duration of a predetermined damping time interval (15).

    Abstract translation: 本发明涉及一种用于在超声传感器操作（2）的机动车辆，在该方法中发送信号时通过激发隔膜传输阶段在激励频率所发射的具有的（4）超声波传感器（2）的 随后在一个阻尼阶段（10），所述隔膜（4）被激励有阻尼频率全部是在反相位相对于所述激励频率，并且随后在接收阶段（11）的隔膜的机械振动（4）是 检测，在检测时的阻尼阶段（10）到所述隔膜（4）的机械振动的振幅worin，在阻尼阶段（10）worin它是确定性开采无论下振荡阈值的芽（S2）的振幅（12） 为规定的衰减时间间隔（15）的持续时间。

    ULTRASONIC SENSOR DRIVE CIRCUIT
    14.
    发明公开
    ULTRASONIC SENSOR DRIVE CIRCUIT 审中-公开
    换能器驱动电路

    公开(公告)号：EP2848961A4

    公开(公告)日：2016-03-16

    申请号：EP13788264

    申请日：2013-04-26

    Applicant: MURATA MANUFACTURING CO

    Inventor： TAKAHATA SATOSHI

    IPC: G01S7/524 ,  G01S15/10 ,  H04R3/00

    CPC classification number: B06B1/0207 ,  B06B2201/30 ,  B06B2201/55 ,  G01S7/524 ,  G01S15/10 ,  G01S15/104

    Abstract: An ultrasonic sensor (1) includes a signal generation circuit (11), an amplifier (12), and a matching circuit (13) as a transmission-side circuit. The signal generation circuit (11) includes a driving signal generation circuit (111) that generates a driving signal for transmitting ultrasonic waves from an ultrasonic transducer (10) for transmission and reception and a reverberation suppression signal generation circuit (112) that generates a reverberation suppression signal for suppressing reverberation occurring at the ultrasonic transducer (10) from which the ultrasonic waves are transmitted. The reverberation suppression signal generation circuit (111) generates the reverberation suppression signal having a frequency of 1/2 times the frequency of the driving signal and applies the reverberation suppression signal to the ultrasonic transducer (10) at a time delayed from the driving signal by a half wavelength. With the above configuration, an ultrasonic sensor driving circuit capable of reducing the duration of the reverberation occurring at the ultrasonic transducer is provided.

    Devices, systems and processes for improving frequency measurements during reverberation periods for ultra-sonic transducers
    15.
    发明授权
    Devices, systems and processes for improving frequency measurements during reverberation periods for ultra-sonic transducers 有权

    公开(公告)号：US11759822B2

    公开(公告)日：2023-09-19

    申请号：US16867298

    申请日：2020-05-05

    Applicant: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC

    Inventor： Zdenek Axman ,  Tomas Suchy ,  Petr Kamenicky

    IPC: B06B1/02

    CPC classification number: B06B1/0215 ,  B06B2201/30 ,  B06B2201/55

    Abstract: Embodiments include a primary short circuit (PSC) coupled to a primary side of a transformer and a dampening element, coupled to a transducer coupled to a secondary side of the transformer, configured to dampen a received signal during a portion of a reverberation period. The PSC and the dampening element may be activated substantially simultaneously. Activation of the PSC circuit mitigates a parallel resonance otherwise arising, in part, in the transducer, but, increases the received signal by a DC shift voltage. The dampening element dampens the DC shift voltage. The received signal may be dampened prior to amplification of the received signal by an amplifier. The dampening facilitates earlier and more precise measurement, during the reverberation period, of at least one operating characteristic for the PAS sensor. Another embodiment prevents the DC shift voltage by selectively activating the PSC within a determined time of a zero-crossing of a given signal.

    Vibration damping system for charged particle beam apparatus
    16.
    发明授权
    Vibration damping system for charged particle beam apparatus 有权

    公开(公告)号：US11664185B2

    公开(公告)日：2023-05-30

    申请号：US17536223

    申请日：2021-11-29

    Applicant: Hitachi High-Tech Corporation

    Inventor： Jun Etoh ,  Hironori Ogawa ,  Shuichi Nakagawa ,  Terunobu Funatsu

    IPC: H01J37/02 ,  B06B1/02 ,  H03G3/20

    CPC classification number: H01J37/023 ,  B06B1/0253 ,  B06B2201/30 ,  H01J2237/0216 ,  H03G3/20

    Abstract: A vibration damping system for a charged particle beam apparatus according to the present invention includes a column through which a charged particle beam passes, a vibration detection unit that detects vibration of the column, a damping mechanism that applies vibration to the column to suppress the vibration of the column, and a control device that controls the damping mechanism. The control device includes a damping gain control unit that amplifies a detection signal of the vibration detection unit with a set amplification factor and outputs an amplified detection signal as a control signal to the damping mechanism, and a saturation suppression unit that adjusts a feedback gain value of the damping gain control unit according to a detection signal of the vibration detection unit, a signal of the damping mechanism, and a maximum output value and a minimum output value of the damping mechanism.

    Ultrasonic sensor driving circuit
    17.
    发明授权
    Ultrasonic sensor driving circuit 有权

    公开(公告)号：US10005105B2

    公开(公告)日：2018-06-26

    申请号：US14535574

    申请日：2014-11-07

    Applicant: MURATA MANUFACTURING CO., LTD.

    Inventor： Satoshi Takahata

    IPC: B60B1/00 ,  B06B1/02 ,  G01S7/524 ,  G01S15/10

    CPC classification number: B06B1/0207 ,  B06B2201/30 ,  B06B2201/55 ,  G01S7/524 ,  G01S15/10 ,  G01S15/104

    Abstract: An ultrasonic sensor includes a signal generation circuit, an amplifier, and a matching circuit as a transmission-side circuit. The signal generation circuit includes a driving signal generation circuit that generates a driving signal for transmitting ultrasonic waves from an ultrasonic transducer for transmission and reception and a reverberation suppression signal generation circuit that generates a reverberation suppression signal for suppressing reverberation occurring at the ultrasonic transducer from which the ultrasonic waves are transmitted. The reverberation suppression signal generation circuit generates the reverberation suppression signal having a frequency of 1/2 times the frequency of the driving signal and applies the reverberation suppression signal to the ultrasonic transducer at a time delayed from the driving signal by a half wavelength. With the above configuration, an ultrasonic sensor driving circuit capable of reducing the duration of the reverberation occurring at the ultrasonic transducer is provided.

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