公开(公告)号：US4823053A

公开(公告)日：1989-04-18

申请号：US105956

申请日：1987-10-07

Applicant: William McCracken ,  Alexander J. Waddell

Inventor： William McCracken ,  Alexander J. Waddell

IPC: B06B1/02 ,  H02K33/00

CPC classification number: B06B1/0261 ,  B06B2201/53 ,  B06B2201/70

Abstract: An arrangement to controllably vibrate a resiliently supported body including electromagnetic drive means energizable to vibrate the body, means to control the device means, means to detect the actual vibration of the body, the control means including digital signal processing means to produce a control pulse train representing a required phased difference from the detected vibration to control the energization of the drive means with an independently set phase difference from the detected frequency to sustain the vibration of the body.

Abstract translation: 一种用于可控制地振动弹性支撑体的装置，包括可激发振动身体的电磁驱动装置，用于控制装置装置的装置，用于检测身体的实际振动的装置，所述控制装置包括数字信号处理装置，以产生控制脉冲串 表示与检测到的振动的所需相位差，以通过与检测到的频率独立设置的相位差来控制驱动装置的通电，以维持身体的振动。

公开(公告)号：US4526477A

公开(公告)日：1985-07-02

申请号：US498694

申请日：1983-05-27

Applicant: Fumikazu Murakami

Inventor： Fumikazu Murakami

IPC: G10K9/122 ,  B06B1/02 ,  G04C21/02 ,  G04G13/02 ,  G10K9/12 ,  G04C21/16

CPC classification number: G04G13/021 ,  B06B1/0284 ,  B06B2201/70

Abstract: A piezoelectric buzzer directly secured to a portion of a wrist watch casing and driven to vibrate the casing and produce an alarm sound. Associated circuitry alternately drives the piezoelectric buzzer at two different frequencies having a frequency ratio of 4:5 and at monotonically decreasing amplitudes as to produce alarm sounds like chimes.

Abstract translation: 一种压电蜂鸣器，其直接固定在手表壳体的一部分上并被驱动以振动壳体并产生报警声。 相关电路交替地以两个不同频率驱动压电蜂鸣器，频率比为4:5，单调递减幅度，产生诸如铃声的警报声。

公开(公告)号：US4300083A

公开(公告)日：1981-11-10

申请号：US21503

申请日：1979-03-19

Applicant: Robert W. Heiges

Inventor： Robert W. Heiges

IPC: B06B1/02 ,  H02K33/00 ,  G05B11/00

CPC classification number: H02K33/00 ,  B06B1/0261 ,  B06B2201/53 ,  B06B2201/70

Abstract: There is disclosed a constant amplitude controller with feedback control for a vibratory feeder apparatus wherein a controlled rectifier is used to rectify the A.C. line voltage applied to the feeder solenoid and to control the voltage to the feeder solenoid. Triggering of the controlled rectifier is accomplished by a bias control signal which is composed of an A.C. phase shift voltage superpositioned by a variable D.C. bias voltage. Mechanical coupling is provided between the solenoid and a transducer which provides feedback to control logic circuitry. In the control logic circuitry, the signal received from the transducer is compared with a signal received from an operator adjusted potentiometer. In this manner, the desired amplitude of the vibrator apparatus is compared with the actual amplitude of the vibrator apparatus and, if there is a discrepancy, the control logic circuitry modifies the amount of control voltage being transferred by the controlled rectifier.

Abstract translation: 公开了一种具有用于振动给料装置的反馈控制的恒定幅度控制器，其中使用受控整流器来对施加到馈线螺线管的交流线路电压进行整流，并控制馈电线圈的电压。 可控整流器的触发由偏置控制信号来实现，该偏置控制信号由由可变直流偏置电压叠加的交流电相移电压组成。 在螺线管和向控制逻辑电路提供反馈的换能器之间提供机械耦合。 在控制逻辑电路中，将从换能器接收的信号与从操作员调节的电位计接收的信号进行比较。 以这种方式，将振动器装置的期望振幅与振动器装置的实际振幅进行比较，如果存在差异，则控制逻辑电路改变受控整流器传输的控制电压的量。

公开(公告)号：US4027280A

公开(公告)日：1977-05-31

申请号：US580678

申请日：1975-05-23

Applicant: Billy Wesley Beyers, Jr.

Inventor： Billy Wesley Beyers, Jr.

IPC: B06B1/02 ,  H04B11/00

CPC classification number: B06B1/0269 ,  B06B2201/70

Abstract: A wide bandwidth, ultrasonic frequency transducer drive circuit incorporates a first unidirectional signal path from a source of drive signals to the transducer. A second unidirectional signal path from the source of drive signals couples signals away from the transducer. A circuit resonant with the transducer causes a relatively high signal voltage to be developed across this transducer.

Abstract translation: 宽带宽超声波频率传感器驱动电路包含从驱动信号源到换能器的第一个单向信号路径。 来自驱动信号源的第二单向信号路径将信号远离换能器耦合。 与换能器谐振的电路导致在该换能器上产生相对较高的信号电压。

公开(公告)号：US3916373A

公开(公告)日：1975-10-28

申请号：US51766474

申请日：1974-10-24

Applicant: INT STANDARD ELECTRIC CORP

Inventor： SCHRODER WOLFGANG

IPC: B06B1/02 ,  H03J9/04 ,  G01S3/80

CPC classification number: H03J9/04 ,  B06B1/0215 ,  B06B2201/51 ,  B06B2201/70

Abstract: A polarizing DC voltage is generated at the capacitance of an ultrasonic transducer and then short circuited by a parallelly arranged electronic switch controlled by the command signal frequency to be radiated. A direct current stored in an inductance during the shorting phase is supplied by way of a decoupling diode to the electrodes to the electrostatic transducer upon opening of the switch thereby generating a polarizing DC voltage for the transducer which is regenerated periodically. For achieving additional energy recuperation, a booster capacitor is disposed in series with the inductance and a booster diode is connected in parallel with the booster capacitor and a portion of the inductance.

Abstract translation: 在超声波换能器的电容下产生极化的直流电压，然后由被放射的指令信号频率控制的并列布置的电子开关短路。 在开关期间，在短路期间存储在电感中的直流通过去耦二极管提供给静电换能器的电极，从而为周期性地再生的换能器产生极化的DC电压。 为了实现额外的能量回收，升压电容器与电感串联布置，并且升压二极管与升压电容器和电感的一部分并联连接。

公开(公告)号：US1675879A

公开(公告)日：1928-07-03

申请号：US33961819

申请日：1919-11-21

Applicant: WESTERN ELECTRIC CO

Inventor： CRANDALL IRVING B

IPC: B06B1/02

CPC classification number: B06B1/0276 ,  B06B2201/51 ,  B06B2201/70

公开(公告)号：US11861931B2

公开(公告)日：2024-01-02

申请号：US17414372

申请日：2020-06-02

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Yingming Liu ,  Haisheng Wang ,  Xiaoliang Ding ,  Lei Wang ,  Changfeng Li

IPC: G06K9/00 ,  G06V40/13 ,  B06B1/06 ,  H10K59/65 ,  H10N30/045 ,  H10N30/077 ,  H10N30/857

CPC classification number: G06V40/1318 ,  B06B1/0692 ,  H10K59/65 ,  H10N30/045 ,  H10N30/077 ,  H10N30/857 ,  B06B2201/70

Abstract: A piezoelectric sensor, a manufacturing method thereof and an electronic device are provided. The piezoelectric sensor includes a substrate, an active layer, the active layer being disposed at a side of the substrate: a first electrode, the first electrode being disposed at a side of the active laver a wav from the substrate, and the first electrode including a plurality of sub-electrodes disposed at intervals: a piezoelectric layer, the piezoelectric layer being disposed at a side of the first electrode away from the active layer; and a second electrode, the second electrode being disposed at a side of the piezoelectric layer away from the first electrode. The active layer is configured to be capable of switching between an insulating state and a conducting state, and in the conducting state the active layer is capable of conducting the plurality of sub-electrodes.

公开(公告)号：US11847851B2

公开(公告)日：2023-12-19

申请号：US17675832

申请日：2022-02-18

Applicant: INVENSENSE, INC.

Inventor： Julius Ming-Lin Tsai ,  Mike Daneman ,  Sanjiv Kapoor

IPC: B06B1/06 ,  B81B7/00 ,  G06V40/13 ,  B81C1/00 ,  G01H11/08

CPC classification number: G06V40/1306 ,  B06B1/067 ,  B06B1/0666 ,  B81B7/007 ,  B81C1/00238 ,  B81C1/00246 ,  B81C1/00301 ,  G01H11/08 ,  B06B2201/70 ,  B81B2201/0271 ,  B81B2201/032 ,  B81B2203/0127 ,  B81B2207/012 ,  B81B2207/015 ,  B81C2201/0105 ,  B81C2201/0109 ,  B81C2203/035 ,  B81C2203/036 ,  B81C2203/0792

Abstract: Microelectromechanical (MEMS) devices and associated methods are disclosed. Piezoelectric MEMS transducers (PMUTs) suitable for integration with complementary metal oxide semiconductor (CMOS) integrated circuit (IC), as well as PMUT arrays having high fill factor for fingerprint sensing, are described.

公开(公告)号：US11798308B2

公开(公告)日：2023-10-24

申请号：US17448037

申请日：2021-09-17

Applicant: QUALCOMM Incorporated

Inventor： Jessica Liu Strohmann ,  Hrishikesh Vijaykumar Panchawagh ,  Nai-Kuei Kuo ,  Yipeng Lu ,  Ali Lopez ,  Kostadin Dimitrov Djordjev

IPC: G01N29/09 ,  G06V40/13 ,  H10K59/65 ,  B06B1/06

CPC classification number: G06V40/1306 ,  B06B1/0688 ,  H10K59/65 ,  B06B2201/70

Abstract: Some disclosed implementations include an ultrasonic sensor stack and an acoustic resonator. The acoustic resonator may be configured to enhance ultrasonic waves transmitted by the ultrasonic sensor stack in an ultrasonic frequency range that is suitable for ultrasonic fingerprint sensors. In some examples, the acoustic resonator may include one or more low-impedance layers residing between a first higher-impedance layer and a second higher-impedance layer. Each of the one or more low-impedance layers may have a lower acoustic impedance than an acoustic impedance of the first higher-impedance layer or an acoustic impedance of the second higher-impedance layer. At least one low-impedance layer may have a thickness corresponding to a multiple of a half wavelength at a peak frequency of the acoustic resonator. The peak frequency may be within a frequency range from 1 MHz. to 20 MHz.

公开(公告)号：US11786933B2

公开(公告)日：2023-10-17

申请号：US16919037

申请日：2020-07-01

Applicant: CLARION CO., LTD.

Inventor： Takeshi Hashimoto ,  Yasuhiro Fujita

IPC: B06B1/02 ,  H04R1/02 ,  H04R5/02

CPC classification number: B06B1/0238 ,  H04R1/025 ,  H04R5/023 ,  B06B2201/70 ,  H04R2201/028

Abstract: A vibration signal generation apparatus includes an absolute value signal generator configured to generate an absolute value signal by detecting an absolute value of amplitude of an acoustic signal, an envelope signal generator configured to generate an envelope signal by detecting an envelope of the absolute value signal, a differentiator configured to differentiate the envelope signal, an amplitude limiter configured to generate an amplitude-limited signal by limiting amplitude of the envelope signal so that an amplitude value of the differentiated envelope signal becomes zero or greater, and a vibration signal generator configured to generate a vibration signal by multiplying the amplitude-limited signal by a reference signal having a frequency that allows a human to perceive a vibration.