会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 51. 发明授权
    • Method and apparatus for acoustic examination using time reversal
    • 使用时间反转的声学检查方法和装置
    • US5428999A
    • 1995-07-04
    • US125855
    • 1993-09-24
    • Mathias Fink
    • Mathias Fink
    • A61B8/00G01N29/38G01S7/52G01S15/88G10K11/34H04R17/00G01N29/00
    • G01S7/52049G10K11/346G10K2200/10
    • A method for acoustic examination of a medium and detection of reflective targets includes a preliminary step of injecting a divergent sound beam into the medium from at least one transducer. Then the echo signals reflected by the medium and received by several transducers in an array are picked up. A time gate is used to select echoes coming from a particular zone of the medium. The echoes are stored, time-reversed and re-emitted. The signals newly reflected by the medium are stored and the time-reversal operation is repeated. After a final time reversal of rank 2n+1 (where n is a positive non-zero integer) over the full depth of the measurement time gate, the characteristics of the wavefront passing closest to the maxima of the signals are determined, advantageously in the form of a time distribution of the maxima. The characteristics can often be approximated with a polynomial law. An apparatus is disclosed for implementing the method.
    • 介质的声学检查方法和反射目标的检测包括从至少一个换能器将发散声束注入到介质中的预备步骤。 然后,拾取由介质反射并由阵列中的几个换能器接收的回波信号。 时间门用于选择来自介质的特定区域的回波。 回波被存储,时间反转和重新发射。 存储由介质新反射的信号,并重复时间反转操作。 在测量时间门的整个深度上最后一次颠倒秩2n + 1(其中n是正非零整数)之后,确定最接近信号最大值的波前通过的特性,有利地在 最大值的时间分布形式。 这些特征常常可以用多项式定律近似。 公开了一种用于实现该方法的装置。
    • 53. 发明授权
    • Method of and device for scanning objects by ultrasound echography
    • 超声波回波检查方法和扫描对象的方法
    • US4594896A
    • 1986-06-17
    • US659798
    • 1984-10-11
    • Jean-Francois CardosoMathias FinkFrancois Hottier
    • Jean-Francois CardosoMathias FinkFrancois Hottier
    • A61B8/08A61B8/00G01N29/28G01N29/44G01S7/52G01N29/00
    • G01S7/52058G01S7/52025G01S7/52036
    • A method for the scanning of non-linearly dispersive objects whereby changes of the energy spectrum of echographic signals can be quantitatively related to parameters of the objects examined, that is to say the ultrasonic attenuation factor .beta. and the exponent r which characterizes the relationship between the non-linear variation of the attenuation and the frequency. To this end, the signals received are split into a number of (n) substantially equally wide, consecutive frequency bands which together cover approximately all frequencies of the signals received. The envelope of the signals in each frequency band is determined and each of the envelopes is multiplied by a correction signal in order to compensate for the diffraction effect. The logarithm of the envelopes thus corrected is determined, after which the following operations are performed by means of the n signals thus obtained:(a) the slope .beta.f.sub.i.sup.r of each of these n signals is determined;(b) this signal .beta.f.sub.i.sup.r is converted into logarithmic form;(c) in a table or a curve the relationship is laid down between the logarithmic value of the frequency for each channel log f.sub.i and the logarithmic value log .beta.f.sub.i.sup.r is generated; and(d) the slope of the curve thus obtained and the value of log .beta.f.sup.r for log f=0 are determined.
    • 一种用于扫描非线性色散物体的方法,其中回波信号的能谱的变化可以与被检查物体的参数定量相关,也就是说超声衰减因子β和指数r表示 衰减和频率的非线性变化。 为此,所接收的信号被分成若干(n)个基本相等宽的连续频带,它们共同覆盖所接收信号的大约所有频率。 确定每个频带中的信号的包络,并且将每个包络乘以校正信号以补偿衍射效应。 确定如此校正的包络的对数,之后通过如此获得的n个信号执行以下操作:(a)确定这n个信号中的每一个的斜率βfir; (b)将该信号βfir转换成对数形式; (c)在表或曲线中,生成每个通道log fi的频率的对数值和对数值logβfir之间的关系; 和(d)如此获得的曲线的斜率和log f = 0的logβfr的值被确定。
    • 60. 发明授权
    • Method for locating an impact on a surface and device therefor
    • 用于定位对表面的冲击的方法及其装置
    • US07511711B2
    • 2009-03-31
    • US11024514
    • 2004-12-28
    • Ros Kiri Kiri IngStefan CathelineNicolas QuieffinMathias Fink
    • Ros Kiri Kiri IngStefan CathelineNicolas QuieffinMathias Fink
    • G06T15/00
    • G06F3/0433
    • Apparatus and methods for locating an impact point on a surface of an object. The object is provided with an acoustic sensor that senses the impact from the acoustic waves that are generated when the object is subjected to the impact. The location of the impact on the surface of the object is determined by a recognition step that includes a comparison of the sensed signal to one or more predetermined signals. Each predetermined signal represents an active zone on the surface of the object. A predetermined signal corresponds to the sensed signal when the impact causing the sensed signal is generated in the active zone represented by the predetermined signal. The impact is associated with the active zone represented by a predetermined signal when the sensed signal and the predetermined signal sufficiently correspond to each other.
    • 用于定位物体表面上的冲击点的装置和方法。 该物体设置有一个声学传感器,它感测当物体受到冲击时产生的声波的冲击。 通过包括感测信号与一个或多个预定信号的比较的识别步骤确定对物体表面的冲击的位置。 每个预定信号表示物体表面上的活动区域。 当在由预定信号表示的活动区域中产生感测信号的冲击时,预定信号对应于感测信号。 当感测信号和预定信号彼此充分对应时,影响与由预定信号表示的活动区域相关联。