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    • 2. 发明授权
    • Automatic processing of ultrasonic data
    • 自动处理超声波数据
    • US09513372B2
    • 2016-12-06
    • US13943791
    • 2013-07-17
    • Schlumberger Technology Corporation
    • Henri-Pierre ValeroAdam PedryczTakeo Fujihara
    • G01S15/00G01V1/48
    • G01S15/006G01N29/07G01N29/4472G01N29/46G01N2291/011G01N2291/044G01V1/48G06F17/14
    • An example method for automatically characterizing an echo contained in an ultrasonic signal generated with an ultrasonic transducer can include receiving data corresponding to the ultrasonic signal, calculating an energy ratio of the ultrasonic signal and localizing the echo using the energy ratio. The method can include windowing a portion of the ultrasonic signal around the localized echo and calculating a Fast Fourier Transform (FFT) and a Hilbert envelop of the windowed portion. The method can include estimating M echo parameters from the FFT and the Hilbert envelope of the windowed portion, where each of the M parameter vectors includes a plurality of echo parameters, calculating M parametric echo models based on each of the M echo parameter vectors and iteratively minimizing a difference between the windowed portion of the ultrasonic signal and a sum of the M parametric echo models.
    • 用于自动表征包含在用超声波换能器产生的超声信号中的回波的示例性方法可以包括接收与超声波信号相对应的数据,计算超声信号的能量比并使用能量比定位回波。 该方法可以包括在局部回波周围加窗超声波信号的一部分,并计算窗口部分的快速傅立叶变换(FFT)和希尔伯特包络。 该方法可以包括从FFT和希尔伯特包络估计M回波参数,其中M个参数矢量中的每一个包括多个回波参数,基于每个M个回波参数向量计算M个参数回波模型, 最小化超声波信号的窗口部分与M个参数回波模型的和之间的差异。
    • 8. 发明申请
    • Automatic Processing of Ultrasonic Data
    • 超声波数据自动处理
    • US20140204700A1
    • 2014-07-24
    • US13943791
    • 2013-07-17
    • Schlumberger Technology Corporation
    • Henri-Pierre ValeroAdam PedryczTakeo Fujihara
    • G01S15/00
    • G01S15/006G01N29/07G01N29/4472G01N29/46G01N2291/011G01N2291/044G01V1/48G06F17/14
    • An example method for automatically characterizing an echo contained in an ultrasonic signal generated with an ultrasonic transducer can include receiving data corresponding to the ultrasonic signal, calculating an energy ratio of the ultrasonic signal and localizing the echo using the energy ratio. The method can include windowing a portion of the ultrasonic signal around the localized echo and calculating a Fast Fourier Transform (FFT) and a Hilbert envelop of the windowed portion. The method can include estimating M echo parameters from the FFT and the Hilbert envelope of the windowed portion, where each of the M parameter vectors includes a plurality of echo parameters, calculating M parametric echo models based on each of the M echo parameter vectors and iteratively minimizing a difference between the windowed portion of the ultrasonic signal and a sum of the M parametric echo models.
    • 用于自动表征包含在用超声波换能器产生的超声信号中的回波的示例性方法可以包括接收与超声波信号相对应的数据,计算超声信号的能量比并使用能量比定位回波。 该方法可以包括在局部回波周围加窗超声波信号的一部分,并计算窗口部分的快速傅立叶变换(FFT)和希尔伯特包络。 该方法可以包括从FFT和希尔伯特包络估计M回波参数,其中M个参数矢量中的每一个包括多个回波参数,基于每个M个回波参数向量计算M个参数回波模型, 最小化超声波信号的窗口部分与M个参数回波模型的和之间的差异。
    • 10. 发明申请
    • CALCULATING VELOCITY OF MOVING OBJECTS WITH TIME OF FLIGHT OF ULTRASOUND PULSES AND RECTIFYING DETECTING DEPTH WITH REDUCED ULTRASOUND SPEED
    • 用超声波脉冲的时间计算移动物体的速度,并用减少的超声波速度进行修复检测深度
    • US20150362590A1
    • 2015-12-17
    • US14305074
    • 2014-06-16
    • Hai Huang
    • Hai Huang
    • G01S7/52A61B8/08A61B8/06
    • G01S7/52017A61B8/06A61B8/488A61B8/5223A61B8/5269G01S15/006
    • During transmission the speed of ultrasound pulses gradually reduces due to their energy loss. So, calculating the detecting depth with fixed transmitting speed may distort two dimensional images due to the reduction of pulse speed. Correcting TOF error will rectify the depth registration and improve the quality of images.The thickness of activated piezoelectric materials decides the size and quantity of ultrasound pulses, which is related to its penetrating ability. So, increasing thickness of activated piezoelectric materials will increase the quantity of ultrasound pulses, which increase their penetrating depth.Moving objects change the speed of reflected ultrasound pulses. The forward moving objects increase reflected speed and reversely moving objects decrease reflected speed, which change their TOF. Therefore TOF shift can be used to calculate the velocity of moving objects in the continuous and pulse wave and color ultrasound, and correct aliasing of pulse and color ultrasound.
    • 在传输期间,超声脉冲的速度由于其能量损失而逐渐降低。 因此,以固定的传输速度计算检测深度可能会由于脉冲速度的降低而扭曲二维图像。 更正TOF错误将纠正深度注册,提高图像质量。 激活的压电材料的厚度决定了超声脉冲的尺寸和数量,这与其穿透能力有关。 因此,增加活化压电材料的厚度将增加超声脉冲的数量,从而增加其穿透深度。 移动的物体改变反射超声脉冲的速度。 向前移动的物体增加反射速度,反向移动物体降低反射速度,从而改变其TOF。 因此,可以使用TOF移位来计算连续脉冲波和彩色超声中移动物体的速度,并纠正脉冲和彩色超声波的混叠。