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    • 6. 发明授权
    • Ultrasound imaging system probe with alternate transducer polling for
common-mode noise rejection
    • 超声成像系统探头,用于共模噪声抑制的替代传感器轮询
    • US5062429A
    • 1991-11-05
    • US454581
    • 1989-12-15
    • Lowell S. SmithEdward J. Piel, Jr.
    • Lowell S. SmithEdward J. Piel, Jr.
    • G01S15/89G10K11/34
    • G01S15/8911G10K11/341G01S7/52077
    • An ultrasonic imaging system has a probe with an even-numbered plurality of N of transducer elements, with one transducer element being present in each of a like plurality N of signal-processing channels, and with successive ones of the transducers polarized in alternating directions. The transducers require channel excitation drive signals which are either a positive-polarity pulse or a negative-polarity pulse, with signal polarity being dependent upon the polarity of the transducer in the particular channel. The processed outputs of each odd channel is connected directly to an associated input of a coherent summer while the processed output of each even channel is individually amplitude-inverted before connection to an associated summer of input. The summation means output is the sum of all channel transducer outputs, with suppression of any common-mode signal appearing anywhere in the system channels, from the transducer to the summation means inputs.
    • 超声波成像系统具有具有偶数个N个换能器元件的探针,其中一个换能器元件存在于相似的多个N个信号处理通道中的每一个中,并且连续的换能器在交替方向上极化。 传感器需要信道激励驱动信号,它们是正极性脉冲或负极性脉冲,信号极性取决于特定通道中的换能器的极性。 每个奇信道的处理输出直接连接到相干夏季的相关输入,而每个偶数通道的处理输出在连接到相关联的输入的夏天之前被单独振幅反转。 求和意味着输出是所有通道传感器输出的总和,抑制从系统通道中任何地方出现的任何共模信号,从传感器到求和单位输入。