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    • 1. 发明申请
    • METHOD FOR DESIGNING ULTRASONIC TRANSDUCERS WITH ACOUSTICALLY ACTIVE INTEGRATED ELECTRONICS
    • 用有声集成电路设计超声波传感器的方法
    • WO2004109656A1
    • 2004-12-16
    • PCT/IB2004/050851
    • 2004-06-07
    • KONINKLIJKE PHILIPS ELECTRONICS, N.V.OSSMANN, William
    • OSSMANN, William
    • G10K11/00
    • G10K11/02B06B1/0614B06B1/067Y10T29/42
    • Ultrasonic transducer (10) including a multi-layer transformer (14) arranged between a backing block (12) and piezoelectric layer (16) on each of which at least one matching layer (18,20) is arranged. The transformer (14) includes a substrate (30) having an electronic circuit, one or more acoustically active layers (32,34,36,38) and an interconnect layer (40) interposed between the piezoelectric layer (16) and the substrate (30). The properties of the substrate (30), each acoustically active layer (32,34,36,38) and the interconnect layer (40) are selected and then the acoustic impedance of the transformer (14) at a side of the piezoelectric layer (16) adjacent the transformer (14) is determined. The properties are then varied, e.g., using a computer simulation, until values for these properties are obtained which provide a desired acoustic performance characteristic at the side of the piezoelectric layer (16) adjacent the transformer (14). The electronic circuit is thus considered in the determination of the acoustic impedance of the transformer (14).
    • 超声波换能器(10)包括布置在背衬块(12)和压电层(16)之间的多层变压器(14),每个压电层布置有至少一个匹配层(18,20)。 变压器(14)包括具有电子电路的衬底(30),一个或多个声学有源层(32,34,36,38)和置于压电层(16)和衬底(16)之间的互连层(40) 30)。 选择衬底(30),每个声学有源层(32,34,36,38)和互连层(40)的性质,然后变压器(14)在压电层一侧的声阻抗( 16)相邻。 然后,例如使用计算机模拟来改变特性,直到得到这些性质的值,其在与变压器(14)相邻的压电层(16)侧提供期望的声学性能特性。 因此,在确定变压器(14)的声阻抗时考虑电子电路。
    • 4. 发明申请
    • SYSTEM FOR PRODUCING SOUND WAVES
    • 用于生产声波的系统
    • WO2015019116A1
    • 2015-02-12
    • PCT/GB2014/052451
    • 2014-08-11
    • ATLAS ELEKTRONIK UK LTD
    • HARDIE, David
    • B06B1/06
    • B06B1/0614B06B1/0633B06B1/0655B06B2201/74
    • A system for producing sound waves in a medium, the system comprising: at least two first free-flooded ring transducers (100) centred about a first axis, the first free-flooded ring transducers (100) being substantially cylindrical and having an axial gap of height g therebetween such that they form a first column; and at least one cylindrical body (500a, 500b) centred about the first axis nested in the first column, such that the cylindrical body is aligned with the axial gap. The cylindrical body may be a tweeter free-flooded ring transducer. This provides for improved wideband performance in a free flooded ring array.
    • 一种用于在介质中产生声波的系统,所述系统包括:至少两个以第一轴为中心的第一自由溢流环形换能器(100),所述第一自由淹没环形换能器(100)基本上为圆柱形并且具有轴向间隙 的高度g,使得它们形成第一柱; 以及至少一个以嵌套在第一列中的第一轴为中心的圆柱体(500a,500b),使得圆柱体与轴向间隙对齐。 圆柱体可以是高音扬声器自由充水的环形换能器。 这提供了在自由淹没环阵列中改进的宽带性能。
    • 5. 发明申请
    • ENHANCED BANDWIDTH TRANSDUCER FOR WELL INTEGRITY MEASUREMENT
    • 增强带宽传感器,用于良好的完整性测量
    • WO2013090596A1
    • 2013-06-20
    • PCT/US2012/069537
    • 2012-12-13
    • MATAM, MaheshLAUTZENHISER, FransGWIN, PatPIEZOTECH LLC
    • MATAM, MaheshLAUTZENHISER, FransGWIN, Pat
    • G01V1/02B06B1/02
    • E21B47/00B06B1/0614E21B47/0005E21B47/091E21B47/16G01B17/02H01L41/083H01L41/09H04B11/00
    • A single critically damped acoustic stack yields a wide frequency range as an acoustic transmitter or as an acoustic transducer having particular use in well integrity determination. The critically damped present acoustic stack utilizes a plurality of stacked acoustic elements such as piezoelectric ceramics that are energized in two manners, providing different center frequencies, each producing a respective center frequency of 100% bandwidth to yield an acoustic stack having a total bandwidth exceeding the bandwidth of an acoustic element or the bandwidth of the plurality of acoustic elements. One manner of energizing is to pulse only one of the the acoustic elements. The other manner is to pulse a first acoustic element then pulse a second acoustic element after a delay equal to the amount of time it takes for the first pulse to reach the face of the second acoustic element. The acoustic elements are bonded together and onto a critically damped backing of tungsten, The assembly is retained in a housing that is preferably made of PEEK. The acoustic stack is primarily used in pulse-echo analysis of metal casing wall thickness and cement bond quality detection of wells.
    • 单个临界阻尼声堆叠产生作为声发射器的宽频率范围,或作为在完整性确定中特别有用的声换能器。 临界阻尼的本声堆叠利用多个堆叠的声学元件,例如压电陶瓷,其以两种方式通电,提供不同的中心频率,每个中心频率产生相应的100%带宽的中心频率,以产生总带宽超过 声学元件的带宽或多个声学元件的带宽。 一种激励方式是仅脉冲声学元件之一。 另一种方式是脉冲第一声学元件,然后在等于第一脉冲到达第二声学元件的面部所花费的时间的延迟之后脉冲第二声学元件。 声学元件结合在一起并在钨的极限阻尼背衬上。组件保持在优选由PEEK制成的外壳中。 声堆叠主要用于井的金属套管壁厚度和水泥粘结质量检测的脉冲回波分析。
    • 7. 发明申请
    • WIDEBAND TRANSDUCER
    • 宽带传感器
    • WO02054827A3
    • 2003-12-24
    • PCT/NO0200005
    • 2002-01-07
    • ANGELSEN BJOERN A JJOHANSEN TONNI F
    • ANGELSEN BJOERN A JJOHANSEN TONNI F
    • G01N29/24A61B8/00B06B1/06G10K11/02H04R1/00H04R17/00
    • B06B1/0614G10K11/02H04R17/00
    • Ultrasound bulk wave transducers and bulk wave transducer arrays for wide band or multi frequency band operation, in which the bulk wave is radiated from a front surface and the transducer is mounted on a backing material with sufficiently high absorption that reflected waves in the backing material can be neglected. The transducer is formed of layers that include a high impedance section comprised of at least one piezoelectric layer covered with electrodes to form an electric port, and at least one additional elastic layer, with all of the layers of the high impedance section having substantially the same characteristic impedance to yield negligible reflection between the layers. The transducer further includes a load matching section comprised of a set of eleastic layers for impedance matching between the high impedance section and the load material and, optionally, impedance matching layers between the high impedance section and the backing material for shaping the transducer frequency response. For multiband operation, the high impedance section includes multiple piezoelectric layers covered with electrodes to form multiple electric ports that can further be combined by electric parallel, anti-parallel, serial, or anti-serial galvanic coupling to form electric ports with selected frequency transfer functions. Each electric port may be connected to separate electronic transceiver systems to obtain, through selection of drive signals on individual ports, selectable electric parallel, anti-parallel, serial, or anti-serial coupling of the ports in transmit mode, enabling transmission of ultrasound pulses with multi-band frequency components. In receive mode, signals from the individual electric ports can be combined after isolation amplifiers in a filter-combination unit to obtain composite electric ports with extreme wide-band transfer functions and multi-band transfer functions covering a range from a 1st to a 4th harmonic band.
    • 用于宽带或多频带操作的超声体波换能器和体波换能器阵列,其中体波从前表面辐射并且换能器安装在具有足够高吸收的背衬材料上,背衬材料中的反射波可以 被忽视 换能器由包括由至少一个被电极覆盖以形成电气端口的压电层组成的高阻抗部分的层形成,以及至少一个额外的弹性层,其中高阻抗部分的所有层具有基本相同的 特征阻抗在层之间产生可忽略的反射。 换能器还包括负载匹配部分,其包括用于高阻抗部分和负载材料之间的阻抗匹配的一组层,以及可选地,高阻抗部分和背衬材料之间的阻抗匹配层,用于对换能器频率响应进行整形。 对于多频段操作,高阻抗部分包括覆盖有电极的多个压电层,以形成多个电端口,其可以通过电并联,反并联,串联或反串联电耦合进一步组合以形成具有所选频率传递函数的电端口 。 每个电气端口可以连接到单独的电子收发器系统,以通过在各个端口上选择驱动信号来获得端口在发射模式下的可选择的电并联,反并联,串联或反串行耦合,从而能够传输超声脉冲 具有多频段频率分量。 在接收模式下,来自各个电气端口的信号可以在滤波器组合单元中的隔离放大器之后组合,以获得具有极宽带传输函数的复合电端口和覆盖从1到4谐波的范围的多频带传输函数 带。