利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

78 条记录 (耗时 0.027 秒)

    SUB-APERTURES WITH INTERLEAVED TRANSMIT ELEMENTS FOR WIRELESS POWER TRANSFER
    3.
    发明申请
    SUB-APERTURES WITH INTERLEAVED TRANSMIT ELEMENTS FOR WIRELESS POWER TRANSFER 有权
    具有用于无线电力传输的交互式发送元件的子通道

    公开(公告)号：US20160268813A1

    公开(公告)日：2016-09-15

    申请号：US14736054

    申请日：2015-06-10

    申请人： uBeam Inc.

    发明人： Paul Reynolds ,  Andrew Joyce ,  Meredith Perry

    IPC分类号： H02J5/00

    CPC分类号： H02J5/005 ,  G10K11/34 ,  G10K11/343 ,  G10K11/346 ,  G10K11/348 ,  H02J50/15 ,  H02J50/50 ,  H02J50/80 ,  H04B11/00

    摘要： A signal generator generates an electrical signal that is sent to an amplifier, which increases the power of the signal using power from a power source. The amplified signal is fed to a sender transducer to generate ultrasonic waves that can be focused and sent to a receiver. The receiver transducer converts the ultrasonic waves back into electrical energy and stores it in an energy storage device, such as a battery, or uses the electrical energy to power a device. In this way, a device can be remotely charged or powered without having to be tethered to an electrical outlet.

    摘要翻译： 信号发生器产生发送到放大器的电信号，其使用来自电源的功率来增加信号的功率。 放大的信号被馈送到发送器换能器以产生可被聚焦并发送到接收器的超声波。 接收器传感器将超声波转换回电能并将其存储在诸如电池的能量存储装置中，或者使用电能来为设备供电。 以这种方式，可以将设备远程充电或供电，而无需连接到电源插座。

    METAMATERIAL BASED ACOUSTIC LENSES FOR STRUCTURAL HEALTH MONITORING
    4.
    发明申请
    METAMATERIAL BASED ACOUSTIC LENSES FOR STRUCTURAL HEALTH MONITORING 有权
    用于结构健康监测的基于METAMATERIAL的声学透镜

    公开(公告)号：US20150228269A1

    公开(公告)日：2015-08-13

    申请号：US14577556

    申请日：2014-12-19

    申请人： University of Notre Dame du Lac

    发明人： Fabio Semperlotti ,  Hongfei Zhu

    IPC分类号： G10K11/30 ,  G01N29/22

    CPC分类号： G10K11/30 ,  G01N29/04 ,  G01N29/221 ,  G01N2291/0231 ,  G01N2291/02491 ,  G01N2291/0258 ,  G01N2291/042 ,  G01N2291/106 ,  G10K11/343

    摘要： An embedded acoustic metamaterial lenses allows for ultrasonic beam-forming and high resolution identification of acoustic sources for structural health monitoring. The lenses design provides an alternative to conventional phased-array technology enabling the formation of steerable and collimated (or focused) ultrasonic beams by exploiting a single transducer. The ultrasonic beam can be steered by simply tuning the frequency of the excitation. Also, the embedded lens can be designed to achieve sub-wavelength resolution to clustered acoustic sources which is a typical scenario encountered in incipient structural damage.

    摘要翻译： 嵌入式声学超材料透镜允许用于结构健康监测的声源的超声波束形成和高分辨率识别。 透镜设计提供了常规相控阵列技术的替代方案，通过利用单个传感器能够形成可导向和准直（或聚焦）的超声波束。 可以通过简单地调谐激励频率来控制超声波束。 此外，嵌入式透镜可以被设计为实现对聚集声源的亚波长分辨率，这是在初始结构损伤中遇到的典型场景。

    FREQUENCY-DOMAIN BEAMFORMING
    5.
    发明申请
    FREQUENCY-DOMAIN BEAMFORMING 有权
    频域波束形成

    公开(公告)号：US20140160883A1

    公开(公告)日：2014-06-12

    申请号：US14097281

    申请日：2013-12-05

    申请人： Technion Research & Development Foundation Ltd.

    发明人： Yonina Eldar ,  Tatiana Chernyakova ,  Ron Amit

    IPC分类号： G03B42/06 ,  A61B8/08

    CPC分类号： G03B42/06 ,  A61B8/52 ,  G01S7/32 ,  G01S7/52025 ,  G10K11/343

    摘要： A method includes receiving from multiple transducers respective signals including reflections of a transmitted signal from a target. An image of the target is produced irrespective of sparsity of the received signals, by computing transducer-specific frequency-domain coefficients for each of the received signals, deriving, from the transducer-specific frequency-domain coefficients, beamforming frequency-domain coefficients of a beamformed signal in which the reflections received from a selected direction relative to the transducers are emphasized, and reconstructing the image of the target at the selected direction based on the beamforming frequency-domain coefficients.

    摘要翻译： 一种方法包括从多个换能器接收包括来自目标的发射信号的反射的相应信号。 通过计算每个接收信号的换能器特定频域系数，产生目标的图像，而不管接收到的信号的稀疏度，从换能器特定的频域系数导出波束形成频域系数 波长形成的信号，其中强调从相对于换能器的所选方向接收的反射，并且基于波束形成频域系数重建所选方向上的目标的图像。

    Variable directivity loud hailing device
    6.
    发明授权
    Variable directivity loud hailing device 有权
    可变方向性大声打击装置

    公开(公告)号：US08194502B1

    公开(公告)日：2012-06-05

    申请号：US12100000

    申请日：2008-04-09

    申请人： James J. Croft, III

    发明人： James J. Croft, III

    IPC分类号： H03G5/00

    CPC分类号： G10K11/343

    摘要： A system and method for varying the directionality of an acoustic output of a loud hailing and warning device is disclosed. The method includes the operation of placing a sliding high-pass filter in a signal path of a transducer array having a frequency-dependant dispersion characteristic. A control is provided that varies a lower cutoff frequency of the sliding high-pass filter. The lower cutoff frequency of an electronic audio signal is variably controlled and sent to the transducer array to variably control the directionality of the acoustic output of the loud hailing and warning device.

    摘要翻译： 公开了一种用于改变声音输出和警告装置的声输出的方向性的系统和方法。 该方法包括将滑动高通滤波器放置在具有频率依赖色散特性的换能器阵列的信号路径中的操作。 提供了改变滑动高通滤波器的较低截止频率的控制。 电子音频信号的较低截止频率被可变地控制并被发送到换能器阵列以可变地控制大声呼叫和警告装置的声输出的方向性。

    Variable origin-variable acoustic scanning method and apparatus
    9.
    发明授权
    Variable origin-variable acoustic scanning method and apparatus 失效
    可变原始角度声波扫描方法及装置

    公开(公告)号：US5261408A

    公开(公告)日：1993-11-16

    申请号：US913829

    申请日：1992-07-16

    申请人： Samuel H. Maslak ,  Hugh G. Larsen ,  Joel S. Chaffin ,  Paul E. Chandler ,  Ian A. Galton ,  Mehebub S. Karmali

    发明人： Samuel H. Maslak ,  Hugh G. Larsen ,  Joel S. Chaffin ,  Paul E. Chandler ,  Ian A. Galton ,  Mehebub S. Karmali

    IPC分类号： G01N29/26 ,  G01S7/52 ,  G10K11/34 ,  A61B8/00

    CPC分类号： G01S7/5209 ,  G01N29/262 ,  G01S15/8927 ,  G01S7/52063 ,  G01S7/52095 ,  G10K11/343

    摘要： An acoustic scanning method and apparatus implemented by transmitting ultrasonic pressure waves and receiving return echoes on a set of spatially non-overlapping acoustic lines scanned along a transducer array with the active acoustic lines shifted and steered so that each acoustic line originates at an arbitrary point on and at an arbitrary angle to the face of the array. In a preferred embodiment, an extension of each acoustic line may also pass through a substantially common vertex that is not on the face of the transducer array, but preferably behind it a selectable distance to provide an extended field of view. The extended field-of-view is defined by the selectively variable location of the common vertex of the acoustic lines and the physical ends of the array, may use the entire transducer array in the near-field, has high quality resolution in both near and far fields, and may simultaneously transmit and receive two or more ultrasound beams from the same transducer aperture.

    摘要翻译： 一种声学扫描方法和装置，其通过发射超声波压力波并在沿着换能器阵列扫描的一组空间上不重叠的声线上接收返回回波而实现，其中有源声线被移动和转向，使得每个声线起始于任意点 并且与阵列的表面成任意角度。 在优选实施例中，每个声线的延伸部也可以通过不在换能器阵列的表面上的基本上共同的顶点，但优选地在其后方具有可选择的距离以提供扩展的视场。 扩展视野由声线的公共顶点和阵列的物理端的选择性可变位置定义，可以使用近场中的整个换能器阵列，在近场和 并且可以同时从相同的换能器孔径发送和接收两个或更多个超声波束。