ELECTROMECHANICAL TRANSDUCER
    91.
    发明申请
    ELECTROMECHANICAL TRANSDUCER 有权
    机电传感器

    公开(公告)号:US20130064035A1

    公开(公告)日:2013-03-14

    申请号:US13566308

    申请日:2012-08-03

    Inventor: Atsushi Kandori

    Abstract: An electromechanical transducer according to an embodiment of the present invention is capable of selectively performing a transmitting and receiving operation by using elements of different shapes. The electromechanical transducer has a plurality of cells, each of which has a vibrating film including two electrodes provided with a gap therebetween, two driving and detecting units, a potential difference setter, and a switch. Each of the driving and detecting units implements a transmitting and/or a receiving function. A first or second element includes first or second electrodes which are electrically connected and further connected to the common first or second driving and detecting unit, respectively. The potential difference setter sets a predetermined potential difference between the reference potentials of the first and second driving and detecting units, respectively, and the switch switches between the first and second driving and detecting units to perform the transmitting and receiving operation.

    Abstract translation: 根据本发明的实施例的机电换能器能够通过使用不同形状的元件选择性地执行发送和接收操作。 机电换能器具有多个单元,每个单元具有包括设置有间隙的两个电极的振动膜,两个驱动和检测单元,电位差设定器和开关。 每个驱动和检测单元实现发送和/或接收功能。 第一或第二元件包括分别电连接并进一步连接到公共第一或第二驱动和检测单元的第一或第二电极。 电位差设定器分别设定第一和第二驱动和检测单元的参考电位与第一和第二驱动和检测单元之间的开关开关之间的预定电位差,以执行发送和接收操作。

    Method of driving two-dimensional array ultrasonic probe, and ultrasonic diagnostic apparatus
    93.
    发明授权
    Method of driving two-dimensional array ultrasonic probe, and ultrasonic diagnostic apparatus 失效
    驱动二维阵列超声波探头的方法及超声波诊断仪

    公开(公告)号:US06868729B2

    公开(公告)日:2005-03-22

    申请号:US10400608

    申请日:2003-03-27

    Inventor: Shinichi Amemiya

    Abstract: For the purpose of reducing the load on hardware for driving a two-dimensional array ultrasonic probe having a multiplicity of transducers, an ultrasonic diagnostic apparatus includes programmable gain amplifiers a00-a99 for amplifying signal voltages e00-e99 from transducers in a two-dimensional array ultrasonic probe, voltage-to-current converters h00-h99 for converting the voltages into current signals i00-i99, a matrix switch M for outputting additive current signals I0-I9 obtained by dividing the current signals i00-i99 into groups and adding current signals in respective groups, current-to-voltage converters H0-H9 for converting the currents into voltage signals, programmable gain amplifiers A0-A9, A-D converters C0-C9, and a digital beamformer unit B for conducting reception beamforming using digital signals D0-D9 and outputting an acoustic line signal W.

    Abstract translation: 为了减少用于驱动具有多个换能器的二维阵列超声波探头的硬件上的负载,超声波诊断装置包括用于从二维阵列中的换能器放大信号电压e00-e99的可编程增益放大器a00-a99 超声波探头,用于将电压转换为电流信号i00-i99的电压 - 电流转换器h00-h99,用于输出通过将电流信号i00-i99分成组而获得的加法电流信号I0-I9的矩阵开关M,并且将电流信号 在各组中,用于将电流转换成电压信号的电流 - 电压转换器H0-H9,用于使用数字信号D0-D9进行接收波束成形的可编程增益放大器A0-A9,AD转换器C0-C9和数字波束形成器单元B 并输出声线信号W.

    Ultrasonic diagnostic apparatus
    94.
    发明授权
    Ultrasonic diagnostic apparatus 失效
    超声波诊断仪

    公开(公告)号:US06866634B2

    公开(公告)日:2005-03-15

    申请号:US10275715

    申请日:2001-05-09

    Abstract: An ultrasonic diagnostic apparatus is capable of displaying a three-dimensional image by performing three-dimensional scanning in an object with ultrasonic beams at rapid speed. Small transducer blocks are formed through selective connection on a two-dimensional transducer array of an ultrasonic probe. Driving pulse signals are modulated and these driving pulse signals, each having respectively different frequencies, are simultaneously provided to the selected small transducer blocks, causing said small transducer blocks to transmit ultrasonic beams to the interior of the object. Waves reflected from the interior of the object are received by each small transducer block. After the echo signals received by each small transducer block are demodulated, these signals are input to a phasing circuit to generate a plurality of received beam signals. The selected position of the small transducer blocks is moved at each repetition of ultrasonic transmission/repetition. The received beam signals are then image-processed image data, and thus displayed on a display.

    Abstract translation: 超声波诊断装置能够通过以超声波束以快速的方式对物体进行三维扫描来显示三维图像。 在超声波探头的二维换能器阵列上通过选择性连接形成小的换能器块。 驱动脉冲信号被调制,并且这些分别具有不同频率的驱动脉冲信号被同时提供给所选择的小换能器块,使得所述小的换能器块将超声波束传送到物体的内部。 从物体内部反射的波被每个小的换能器块接收。 在由每个小换能器块接收到的回波信号进行解调之后,这些信号被输入到定相电路以产生多个接收的波束信号。 在每次重复超声波发射/重复时移动小传感器块的所选择的位置。 接收到的波束信号是图像处理的图像数据,从而显示在显示器上。

    Method of driving two-dimensional array ultrasonic probe, and ultrasonic diagnostic apparatus
    96.
    发明申请
    Method of driving two-dimensional array ultrasonic probe, and ultrasonic diagnostic apparatus 失效
    驱动二维阵列超声波探头的方法及超声波诊断仪

    公开(公告)号:US20030188582A1

    公开(公告)日:2003-10-09

    申请号:US10400608

    申请日:2003-03-27

    Inventor: Shinichi Amemiya

    Abstract: For the purpose of reducing the load on hardware for driving a two-dimensional array ultrasonic probe having a multiplicity of transducers, the present invention comprises programmable gain amplifiers a00-a99 for amplifying signal voltages e00-e99 from transducers in a two-dimensional array ultrasonic probe, voltage-to-current converters h00-h99 for converting the voltages into current signals i00-i99, a matrix switch M for outputting additive current signals I0-I9 obtained by dividing the current signals i00-i99 into groups and adding current signals in respective groups, current-to-voltage converters H0-H9 for converting the currents into voltage signals, programmable gain amplifiers A0-A9, A-D converters C0-C9, and a digital beamformer unit B for conducting reception beamforming using digital signals D0-D9 and outputting an acoustic line signal W.

    Abstract translation: 为了减少用于驱动具有多个换能器的二维阵列超声波探头的硬件上的负载,本发明包括用于从二维阵列超声波中的换能器放大信号电压e00-e99的可编程增益放大器a00-a99 用于将电压转换为电流信号i00-i99的电压 - 电流转换器h00-h99,用于输出通过将电流信号i00-i99分成组并将电流信号相加得到的加法电流信号I0-I9的矩阵开关M 各组,用于将电流转换为电压信号的电流 - 电压转换器H0-H9,可编程增益放大器A0-A9,AD转换器C0-C9和用于使用数字信号D0-D9进行接收波束形成的数字波束形成单元B,以及 输出声线信号W.

    Mechanical resonator having a variable resonance frequency
    97.
    发明授权
    Mechanical resonator having a variable resonance frequency 有权
    具有可变谐振频率的机械谐振器

    公开(公告)号:US06134964A

    公开(公告)日:2000-10-24

    申请号:US150358

    申请日:1998-09-09

    Abstract: A mechanical resonator has an electronically adjustable resonance frequency and is especially adapted to be used as a tunable vibration absorber. The mechanical resonator includes an inertial mass mounted on a free end of a spring, which is secured at its other end to the structure that is to be vibrationally damped. In order to vary the resonant frequency of the resonator, an electromechanical converter such as a piezoelectric element is connected to the spring and/or the inertial mass, and a displacement and/or acceleration sensor provides a sensor signal that is dependent on the respective displacement and/or acceleration of the spring and/or the inertial mass. An electronic control circuit generates an actuating signal based on the sensor signal. The actuating signal is applied to the electro-mechanical converter, which responsively exerts an adjusting force onto the spring and/or the inertial mass. The control circuit may include one or more variable amplifiers, inverters, and phase shifters, to control the actuating signal such that the adjusting force exerted by the electromechanical converter either counteracts or reinforces the bending force exerted by the inertial mass on the spring. In this manner, the effective total spring constant of the resonator can be increased or decreased relative to the inherent spring constant of the spring, whereby the resonant frequency is adjusted.

    Abstract translation: 机械谐振器具有电子调节的共振频率,并且特别适合用作可调节振动吸收器。 机械谐振器包括安装在弹簧的自由端上的惯性质量体,其在另一端被固定在要被振动阻尼的结构上。 为了改变谐振器的谐振频率,诸如压电元件的机电转换器连接到弹簧和/或惯性块,位移和/或加速度传感器提供依赖于相应位移的传感器信号 和/或弹簧和/或惯性质量的加速度。 电子控制电路基于传感器信号产生启动信号。 致动信号被施加到电 - 机械转换器,其响应地对弹簧和/或惯性质量施加调节力。 控制电路可以包括一个或多个可变放大器,反相器和移相器,以控制致动信号,使得由机电转换器施加的调节力抵消或加强由惯性块施加在弹簧上的弯曲力。 以这种方式,可以相对于弹簧的固有弹簧常数增加或减小谐振器的有效总弹簧常数,从而调节谐振频率。

    Method of compensating for inoperative elements in an ultrasound
transducer
    98.
    发明授权
    Method of compensating for inoperative elements in an ultrasound transducer 失效
    补偿超声换能器中的不合格元件的方法

    公开(公告)号:US5676149A

    公开(公告)日:1997-10-14

    申请号:US710924

    申请日:1996-09-24

    Applicant: Lin-Xin Yao

    Inventor: Lin-Xin Yao

    CPC classification number: B06B1/0207 B06B2201/20

    Abstract: A method for compensating for inoperative transducer elements in an ultrasound transducer. The transmit voltage of the driving signals applied to transducer elements that are adjacent an inoperative element is increased to compensate for the inoperative element. Preferably, a linear interpolation used whereby the power/gain of the signals to be applied to the inoperative element is divided equally among the adjacent operative elements. If an inoperative transducer element is adjacent more than one inoperative element, then the gain of the operative transducer element is increased accordingly for each such inoperative element. In addition, the gain of the echo signals produced by the adjacent transducer elements is increased to compete for the inoperative element.

    Abstract translation: 一种用于补偿超声换能器中的不可操作的换能器元件的方法。 施加到与不活动元件相邻的换能器元件的驱动信号的发射电压被增加以补偿不起作用的元件。 优选地,使用的线性内插,其中施加到不操作元件的信号的功率/增益在相邻的操作元件之间被平均地分配。 如果不合适的换能器元件相邻多于一个不起作用的元件,则对于每个这样的不操作元件,操作换能器元件的增益相应地增加。 此外,由相邻的换能器元件产生的回波信号的增益增加以竞争不起作用的元件。

    Ultrasonic transducer array and manufacturing method thereof
    99.
    发明授权
    Ultrasonic transducer array and manufacturing method thereof 失效
    超声波换能器阵列及其制造方法

    公开(公告)号:US5637800A

    公开(公告)日:1997-06-10

    申请号:US374251

    申请日:1995-01-18

    Abstract: An ultrasonic transducer array, and a method for manufacturing it, having a plurality of transducer elements aligned along an array axis in an imaging plane. Each transducer element includes a piezoelectric layer and one or more acoustic matching layers. The piezoelectric layer has a concave front surface overlayed by a front electrode and a rear surface overlayed by a rear electrode. The shape of each transducer element is selected such that it is mechanically focused into the imaging plane. A backing support holds the plurality of transducer elements in a predetermined relationship along the array axis such that each element is mechanically focused in the imaging plane.

    Abstract translation: 一种超声换能器阵列及其制造方法,具有沿成像平面中的阵列轴排列的多个换能器元件。 每个换能器元件包括压电层和一个或多个声匹配层。 压电层具有由前电极覆盖的凹前表面和由后电极覆盖的后表面。 选择每个换能器元件的形状使得其被机械地聚焦到成像平面中。 背衬支撑件沿着阵列轴将多个换能器元件保持在预定关系中,使得每个元件在成像平面中被机械地聚焦。

    Microprocessor controlled drive circuit for a liquid nebulizer having a
plurality of oscillators
    100.
    发明授权
    Microprocessor controlled drive circuit for a liquid nebulizer having a plurality of oscillators 失效
    具有多个振荡器的液体雾化器的微处理器控制驱动电路

    公开(公告)号:US5563811A

    公开(公告)日:1996-10-08

    申请号:US55056

    申请日:1993-04-29

    Inventor: Cecil W. Embree

    Abstract: A circuit for causing an element to produce a substantially linear response to an input signal comprising an element for providing a response, a transistor oscillator circuit for providing an electrical output signal of variable amplitude to excite the element in response to the input signal, the transistor oscillator circuit normally causing the electrical output signal to vary non-linearly with respect to the input signal, and microprocessor means for correcting the non-linear relationship between the input signal and the electrical output signal to thereby cause the electrical output signal to vary substantially linearly with respect to the input signal when the input signal is applied to the microprocessor means.

    Abstract translation: 一种用于使元件对包括用于提供响应的元件的输入信号产生基本线性响应的电路,晶体管振荡器电路,用于提供可变幅度的电输出信号以响应于输入信号激励元件,晶体管 振荡器电路通常导致电输出信号相对于输入信号非线性地变化;以及微处理器装置,用于校正输入信号和电输出信号之间的非线性关系,从而使电输出信号基本线性地变化 当输入信号被施加到微处理器装置时相对于输入信号。

Patent Agency Ranking