专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US5252836A Reflective grain defect scanning 失效
标题翻译：反光谷物缺陷扫描
公开(公告)号：US5252836A
公开(公告)日：1993-10-12
申请号：US906537
申请日：1992-06-30
申请人： Peter C. Matthews , Barry G. Wilson , Jon F. Soest
发明人： Peter C. Matthews , Barry G. Wilson , Jon F. Soest
IPC分类号： G01N21/55 , G01N21/898 , G01N21/86
CPC分类号： G01N33/46 , G01N21/8986 , G01N2021/556
摘要： Grain structure defect scanning is accomplished by a pair of light detectors directed toward an inspection point illuminated by a collimated light beam incident upon the inspection surface at a given angle of incidence. One detector, the specular detector, is positioned generally along the specular angle of reflection as defined by the angle of incidence and the other detector, the diffuse detector, lies substantially along the angle of incidence. When specular reflection dominates, as when the inspection point corresponds to clearwood, the specular detector indicates a higher reflective light intensity than the diffuse detector. When diffuse reflection dominates, however, as when the inspection point corresponds to a grain defect, both detectors indicate similar reflective light intensity. Grain defect discrimination is accomplished by calculating a ratio of specular detector output to diffuse detector output. Further analysis of the relative magnitudes of the detector outputs provides a basis for identifying grading marks, such as ink and wax marks, at the inspection point.
摘要翻译：颗粒结构缺陷扫描是通过一对光检测器来实现的，所述光检测器指向由以给定入射角入射在检查表面上的准直光束照射的检查点。一个检测器，镜面检测器通常沿着入射角定义的反射角定位，而另一个检测器，扩散检测器基本上沿入射角定位。当镜面反射占主导地位时，当检查点对应于清除木材时，镜面检测器表示比漫射检测器更高的反射光强度。然而，当漫反射占优势时，当检查点对应于晶粒缺陷时，两个检测器表示相似的反射光强度。通过计算镜面检测器输出与扩散检测器输出的比例来实现晶粒缺陷识别。检测器输出的相对幅度的进一步分析提供了在检查点识别分级标记（例如油墨和蜡痕）的基础。

2. 发明授权

US4606645A Method for determining localized fiber angle in a three dimensional fibrous material 失效
标题翻译：用于确定三维纤维材料中局部纤维角度的方法
公开(公告)号：US4606645A
公开(公告)日：1986-08-19
申请号：US665609
申请日：1984-10-29
申请人： Peter C. Matthews , Jon F. Soest
发明人： Peter C. Matthews , Jon F. Soest
IPC分类号： B27D1/00 , G01B11/26 , G01N21/47 , G01N21/88 , G01N21/93
CPC分类号： G01N21/4738 , G01N2021/4716
摘要： The invention is a method for measuring fiber angle in a fibrous solid material relative to three mutually orthogonal reference axes. It is particularly well suited for measuring diving grain and grain surface angle in wood. The method is based on the measurement of the intensity of reflected light at different azimuthal angles when a beam of light of small diameter is impinged upon the surface. The nature of the specular reflections from a light beam striking the surface of a cylinder serves as a model for the system. A preferred apparatus for practicing the method comprises a light source, which may be a low powered laser, aimed normal to the surface of the fibrous material. A plurality of photosensors lying in a plane normal to the axis of the light beam are placed around the light source to detect the light reflected at various azimuthal angles. When the fibers of the material lie normal to the light beam, reflected light maxima are seen 180.degree. apart at positions normal to the longitudinal axis of the fibers. If the fiber axes in the material are tilted out of normalcy with respect to the incoming light beam, even though the surface of the material is normal, the azimuthal angle between the reflected light maxima decreases as a function of the tilt angle. Various alternative methods include the use of an on-axis photosensor with a multiplexed series of light sources arranged around the axis. These lights may be used simultaneously if they are of different wavelengths and the photosensor employs a beam splitting and filtering system sensitive to each different light source.
摘要翻译：本发明是相对于三个相互正交的参考轴测量纤维固体材料中的纤维角度的方法。特别适用于测量木材中的潜水颗粒和颗粒表面角度。该方法基于当小直径的光束撞击在表面上时在不同方位角处的反射光的强度的测量。来自撞击气缸表面的光束的镜面反射的性质是系统的模型。用于实施该方法的优选装置包括可以是低功率激光的光源，其垂直于纤维材料的表面。位于与光束轴垂直的平面中的多个光电传感器被放置在光源周围以检测以各种方位角度反射的光。当材料的纤维垂直于光束时，反射光最大值在垂直于纤维纵轴的位置处被看到180°。如果材料中的纤维轴相对于入射光束倾斜超出正常状态，即使材料的表面是正常的，反射光最大值之间的方位角随倾斜角的减小而减小。各种替代方法包括使用具有围绕该轴布置的多路复用的一系列光源的轴上光电传感器。这些光可以同时使用，如果它们具有不同的波长，并且光电传感器使用对每个不同光源敏感的光束分离和滤波系统。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式