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11. 发明申请

US20070293759A1 Doppler Flow Measurement Apparatus 审中-公开
标题翻译：多普勒流量测量仪
公开(公告)号：US20070293759A1
公开(公告)日：2007-12-20
申请号：US11574605
申请日：2005-09-02
申请人： George Eilers , Wes Weber , Edward Spence
发明人： George Eilers , Wes Weber , Edward Spence
IPC分类号： A61B8/06
CPC分类号： A61M1/3663 , A61B8/06 , G01F1/663
摘要： The present invention relates to a measurement of a flow by the use of Doppler ultrasound, and in particular, by analyzing the spectrum of the reflected ultrasonic signal. The reflected signal is mixed electronically with the transmitted signal in a product detector, demodulator or similar component (250) to produce a signal that is shifted in frequency. In another embodiment, the method includes analyzing the spectrum (280, 300) of the reflected ultrasonic beams by performing the step of: (a) determining a maximum frequency of the detector output signal which is representative of a maximum particle velocity; and (b) calculating a total flow of the particles based on the maximum particle velocity.
摘要翻译：本发明涉及通过使用多普勒超声测量流量，特别是通过分析反射的超声波信号的频谱。反射信号与产品检测器，解调器或类似部件（250）中的发射信号以电子方式混合，以产生频率偏移的信号。在另一个实施例中，该方法包括通过执行以下步骤来分析反射超声波束的频谱（280,300）：（a）确定代表最大粒子速度的检测器输出信号的最大频率; 和（b）基于最大粒子速度计算颗粒的总流量。

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