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公开(公告)号:US5859694A
公开(公告)日:1999-01-12
申请号:US876236
申请日:1997-06-16
申请人: Frederic Galtier , Olivier Besson
发明人: Frederic Galtier , Olivier Besson
IPC分类号: G01P5/00 , G01P5/20 , G01P5/22 , G01P5/26 , G06F15/332
CPC分类号: G01P5/26
摘要: An optical velocimeter probe a device to illuminate a volume of measurement in which there may pass particles, and an optical detector to produce an electrical signal x(t) in response to the passage of a particle in the illuminated volume. It also includes a device to extract information representing the velocity v of particles from the electrical signal, including, in particular, a device to convert the electrical signal x(t) into a complex signal .sub.x (t), an apparatus to set up a self-correlation function r.sub.x (m) of the signal x(t), and a device to estimate the velocity v from the computation of the phase .phi..sub.x (m) of the function r.sub.x (m).
摘要翻译: 光学测速仪探测照射可能通过颗粒的测量体积的装置,以及光学检测器,以响应于照射体积中的颗粒通过而产生电信号x(t)。 它还包括从电信号提取表示粒子速度v的信息的装置,特别包括将电信号x(t)转换为复信号+ E,cir x + EE(t)的装置, 设置信号x(t)的自相关函数r + E,cir x + EE(m)的装置,以及从相位phi + E的计算估计速度v的装置,cir x + 函数r + E,cir x + EE(m)的EE(m)。
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公开(公告)号:US5856865A
公开(公告)日:1999-01-05
申请号:US876235
申请日:1997-06-16
申请人: Frederic Galtier , Olivier Besson
发明人: Frederic Galtier , Olivier Besson
CPC分类号: G01P5/26
摘要: An optical velocimetrical probe comprises means to illuminate a volume of measurement in which particles may pass, and optical detection means to produce an electrical signal x(t) in response to the passage of a particle in the illuminated volume. It also comprises means to extract information representing the velocity v of particles from the electrical signal, these means comprising,in particular, means to compute the density of probability p(x,.theta.) of the signal vector x(t), means to determine a frequency representing the velocity v for which this probability is the maximum.
摘要翻译: 光学速度探头包括照亮粒子可以通过的测量体积的装置,以及响应于照射体积中的颗粒通过而产生电信号x(t)的光学检测装置。 它还包括从电信号中提取表示粒子速度v的信息的装置,这些装置尤其包括计算信号向量x(t)的概率密度ρ(x,θ)的手段, 表示该概率为最大值的速度v的频率。
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