公开(公告)号：US5301129A

公开(公告)日：1994-04-05

申请号：US875672

申请日：1992-04-29

申请人： Stephen V. McKaughan ,  Gary F. Nevers ,  Joseph W. Landry ,  John P. Fallon ,  Paul R. Adomaitis

发明人： Stephen V. McKaughan ,  Gary F. Nevers ,  Joseph W. Landry ,  John P. Fallon ,  Paul R. Adomaitis

IPC分类号： G01N21/89 ,  G01N21/93 ,  G06T7/00 ,  G06F11/00

CPC分类号： G06T7/001 ,  G01N21/89 ,  G01N21/93 ,  G01N2021/936 ,  G06T2207/10016 ,  G06T2207/30124

摘要： Method and apparatus for inspecting the surface of a moving web of homogeneous material for anomalies, the apparatus including a light source for illuminating the web surface and a light sensitive detector for receiving data from the web surface. The data is representative of the light reflected from the surface, as the light is affected by surface anomalies and background information. Computational means are provided for receiving output data from the detector in response to the data the detector receives from the web surface, and for processing the output data in a manner that determines the presence of surface anomalies. The computation means includes a plurality of filters for transforming the surface data in a manner that effects substantial elimination of the background information, and means for establishing threshold levels for background information. In addition, automatic means is provided for modifying the threshold levels in response to changes in the reflectance, frequency, or contrast of background information received by the detector and forwarded to the computation means.

摘要翻译： 用于检查用于异常的均质材料的移动幅材的表面的方法和装置，该装置包括用于照射幅材表面的光源和用于从幅材表面接收数据的光敏检测器。 数据表示从表面反射的光，因为光受到表面异常和背景信息的影响。 提供计算装置，用于响应于检测器从卷筒纸表面接收到的数据，并且以确定表面异常存在的方式处理输出数据，从检测器接收输出数据。 计算装置包括多个滤波器，用于以实质上消除背景信息的方式变换表面数据，以及用于建立背景信息的阈值水平的装置。 此外，提供自动装置，用于响应于由检测器接收并转发到计算装置的背景信息的反射率，频率或对比度的变化来修改阈值电平。

公开(公告)号：US4675730A

公开(公告)日：1987-06-23

申请号：US773065

申请日：1985-09-06

申请人： Paul R. Adomaitis ,  Nicholaas L. Brouwer ,  Bernard J. Hobi

发明人： Paul R. Adomaitis ,  Nicholaas L. Brouwer ,  Bernard J. Hobi

IPC分类号： G01N21/89 ,  H04N7/18

CPC分类号： G01N21/8903 ,  G01N2021/889

摘要： The invention comprises a system for continuously inspecting the surface of a moving object for defects therein while illuminating the surface of the moving object with both specular and/or diffused light of selected wavelengths, automatically detecting the presence of a defect, and automatically transmitting a visual image of a defect, when detected, to a storage vehicle capable of subsequent permanent display and electronic characterization of the visual image containing the defect.

摘要翻译： 本发明包括一种系统，用于连续检查运动物体表面的缺陷，同时用选定波长的镜面和/或漫射光照亮移动物体的表面，自动检测缺陷的存在，并自动传输视觉 当检测到缺陷的图像时，可以对能够随后永久显示和电子表征包含缺陷的视觉图像的存储车辆进行。

公开(公告)号：US5619587A

公开(公告)日：1997-04-08

申请号：US166891

申请日：1993-12-15

申请人： Louis G. Willoughby, Jr. ,  Donald G. Jordan ,  Paul R. Adomaitis ,  Avraham C. Goldman ,  Anthony J. Tomasello ,  Steve Montellese ,  Edward W. Weed ,  Abraham Shtrahman

发明人： Louis G. Willoughby, Jr. ,  Donald G. Jordan ,  Paul R. Adomaitis ,  Avraham C. Goldman ,  Anthony J. Tomasello ,  Steve Montellese ,  Edward W. Weed ,  Abraham Shtrahman

IPC分类号： B21C51/00 ,  G01B11/245 ,  G06K9/00

CPC分类号： B21C51/00 ,  G01B11/245

摘要： There is disclosed a system for visually measuring the cross-sectional thickness of a light-reflective object, such as a vehicle wheel, said object having a plurality of curved surfaces. The system includes: means for transmitting a line of light onto each curved surface of the object at substantially the same cross-sectional area through the object; means for sensing the lines of light reflected from each curved surface and producing a plurality of signals thereby, said signals representing a linear profile of each curved surface at the same cross-sectional area; and means for comparing the profile signals from each curved surface for calculating a cross-sectional thickness of the object at one or more points along the same cross-sectional area. On a more preferred basis, this system further includes means for supporting the object, and means for rotating the object about at least one axis of support to measure a plurality of cross-sectional thicknesses thereof. Most preferably, the light transmittal means of this system include a plurality of light sources for transmitting collimated laser lines across the object's inner curved surfaces from opposite sides of the object substantially simultaneously. A method for inspecting a vehicle wheel to determine whether it is within dimensional specification is also disclosed. This method employs a system substantially as set forth above.

摘要翻译： 公开了一种视觉测量诸如车轮的光反射物体的横截面厚度的系统，所述物体具有多个曲面。 该系统包括：用于通过物体以基本相同的横截面面积将光线传输到物体的每个弯曲表面上的装置; 用于感测从每个弯曲表面反射的光线并由此产生多个信号的装置，所述信号表示在相同横截面积处的每个弯曲表面的线性轮廓; 以及用于比较来自每个弯曲表面的轮廓信号的装置，用于在沿相同横截面积的一个或多个点处计算物体的横截面厚度。 在更优选的基础上，该系统还包括用于支撑物体的装置，以及用于围绕至少一个支撑轴旋转物体以测量其多个横截面厚度的装置。 最优选地，该系统的光传输装置包括多个光源，用于基本上同时从对象的相对侧将物镜的内弯曲表面传送准直激光线。 还公开了一种用于检查车轮以确定其是否在尺寸规格内的方法。 该方法采用基本上如上所述的系统。