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    • 2. 发明授权
    • Micron resolution particle image velocimeter
    • 微米分辨率粒子图像测速仪
    • US06653651B1
    • 2003-11-25
    • US09453138
    • 1999-12-02
    • Carl D. MeinhartJuan G. SantiagoRonald J. AdrianSteve T. Wereley
    • Carl D. MeinhartJuan G. SantiagoRonald J. AdrianSteve T. Wereley
    • G01N2185
    • G01N15/1427G01F1/712G01N15/1459G01N15/1463G01N2015/1075G01N2015/1447
    • A method and apparatus for measuring fluid motion with micron scale spatial resolution has been developed. Here, micron or submicron solid fluorescent particles are injected into the fluid body. The particles are chosen to closely follow the motion of the fluid. Pulses of light, at the excitation wavelength, broadly illuminate the test device and the fluorescent particles, The flourescent particles absorb the excitation light and emit pulses of fluorescent light, at the emission wavelength. The fluorescent light is collected by a microscope objective lens, and relayed through a fluorescent filter to an image recording device, such as a CCD camera. Subsequently, discrete images of discrete particles at two or more instances in time are recorded. These images can then be analyzed using correlation analysis to obtain velocity measurements. Since the illumination light broadly illuminates the test section, the depth of field of the objective lens is used to define the thickness of the two-dimensional measurement plane.
    • 已经开发了用于以微米尺度空间分辨率测量流体运动的方法和装置。 这里,将微米或亚微米固体荧光颗粒注入流体中。 颗粒被选择以紧密地跟随流体的运动。 在激发波长处的光脉冲广泛地照射测试装置和荧光颗粒。荧光颗粒吸收激发光并以发射波长发射荧光脉冲。 荧光灯由显微镜物镜收集,并通过荧光过滤器中继到例如CCD照相机的图像记录装置。 随后,记录两个或更多个时间的离散粒子的离散图像。 然后可以使用相关分析来分析这些图像,以获得速度测量。 由于照明光广泛地照射测试部分,所以物镜的景深用于限定二维测量平面的厚度。