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2. 发明授权

US06456375B1 Focused laser light turbidity sensor apparatus and method for measuring very low concentrations of particles in fluids 失效
标题翻译：聚焦激光浊度传感器设备和测量流体中极低浓度颗粒的方法
公开(公告)号：US06456375B1
公开(公告)日：2002-09-24
申请号：US09788724
申请日：2001-02-20
申请人： Gregory J. Ottens , Kevin J. Engler , Thomas R. Guiffre , Thomas M. Moyer
发明人： Gregory J. Ottens , Kevin J. Engler , Thomas R. Guiffre , Thomas M. Moyer
IPC分类号： G01N2100
CPC分类号： G01N21/532 , D06F39/004 , G01N21/49 , G01N33/2888 , G01N2021/4707 , G01N2021/4709 , G01N2021/4711 , G01N2021/4726 , G01N2021/4769 , G01N2021/5969
摘要： A turbidity sensor apparatus and method for measuring very low concentrations of particles in a fluid. The turbidity sensor comprises a laser light source for emitting laser light through a fluid. Such a fluid may be hydraulic fluid, oil, water utilized in water purification systems, or other translucent fluids. The turbidity sensor includes a first light-sensitive detector located 90 degrees to incident laser light emitted from the laser light source, and a second light-sensitive detector located at an angle obtuse to the incident laser light emitted from the laser light source, wherein the first and second light-sensitive detectors respectively measure side scattered light and forward scattered light reflected from particles contained within the fluid that come into contact with laser light emitted from the laser light source, thereby providing an accurate and reliable measurement of very low concentrations of particles within the fluid. The turbidity sensor also includes a component for capturing incident laser light entirely emitted from the laser light source, thereby preventing reflection of the laser light back into the fluid. The laser light source may be a Vertical Cavity Surface Emitting Laser (VCSEL) or other light emitting light source.
摘要翻译：用于测量流体中极低浓度颗粒的浊度传感器装置和方法。浊度传感器包括用于通过流体发射激光的激光光源。这种流体可以是在水净化系统中使用的液压流体，油，水，或其它半透明流体。浊度传感器包括：第一感光探测器，其位于与激光光源发射的入射激光成90度角;以及第二感光探测器，其位于与激光光源发射的入射激光角度钝角处，其中，第一和第二感光检测器分别测量侧向散射光和从与激光光源发射的激光接触的流体中包含的颗粒反射的向前散射光，从而提供非常低浓度的颗粒的精确和可靠的测量在流体内。浊度传感器还包括用于捕获从激光光源全部发射的入射激光的部件，从而防止激光反射回流体。激光光源可以是垂直腔表面发射激光（VCSEL）或其他发光光源。

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