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
    • 7. 发明授权
    • Process for removing all ambiguity from the measurement by Doppler
effect of the speed of a moving target
    • 通过移动目标的速度的多普勒效应从测量中消除所有模糊度的过程
    • US4680739A
    • 1987-07-14
    • US719702
    • 1985-04-04
    • Olivier Lannuzel
    • Olivier Lannuzel
    • G01S15/50A61B8/06G01P5/24G01S15/58A61B5/02G01F1/708
    • A61B8/06G01P5/244G01S15/582G01S15/584
    • The present invention concerns a process for removing all ambiguity from the measurement by the Doppler effect of the speed of a target. It consists in obtaining a signal of Doppler shift relating to a series of ultrasonic pulses sent in the direction of the target and received after their reflection onto this target, the recurrence frequency of the pulses constituting an ambiguity limit of these speed measurements, wherein the measured Doppler shift is transposed by modulating the signal received by a signal at a frequency called determination frequency, so as to bring from a known value the spectral components to be analyzed in the useful measuring band and after measuring the true speed values are worked out by adjunction of a correction that depends upon the determination frequency that is used, this process being applicable to measuring the speed of blood in the medical field.
    • 本发明涉及一种通过目标速度的多普勒效应从测量中消除所有歧义的过程。 它包括获得与在目标方向上发送的一系列超声波脉冲相关的多普勒频移信号,并将其反射到该目标上后,构成这些速度测量值的模糊极限的脉冲的再现频率,其中测量 通过调制由称为确定频率的频率的信号接收的信号来调整多普勒频移,以便从已知值中获得要在有用测量带中分析的频谱分量,并且在测量真实速度值之后通过辅助 取决于所使用的确定频率的校正,该过程适用于测量医疗领域中的血液的速度。