公开(公告)号：US5168322A

公开(公告)日：1992-12-01

申请号：US747903

申请日：1991-08-19

Applicant: Donald A. Clarke ,  Rodger L. Reynolds ,  Timothy R. Pryor

Inventor： Donald A. Clarke ,  Rodger L. Reynolds ,  Timothy R. Pryor

IPC: G01B11/30 ,  G01N21/88

CPC classification number: G01N21/8806 ,  G01B11/306 ,  G01N2021/8819 ,  G01N2021/8887 ,  G01N2201/102

Abstract: This invention relates to an electro-optical technique which senses form type and other defects on surfaces such as sheet metal or plastic panels. Method and apparatus are disclosed for allowing the inspection of the entire surface of interest from a single point of view while reducing the complexity of defects' optical signatures to simplify their subsequent analysis.

Abstract translation: 本发明涉及一种电光技术，其可以感测诸如金属板或塑料板的表面上的形状类型和其它缺陷。 公开了用于允许从单个角度检查感兴趣的整个表面的方法和装置，同时减少缺陷的光学特征的复杂性，以简化其随后的分析。

公开(公告)号：US5118195A

公开(公告)日：1992-06-02

申请号：US579462

申请日：1990-09-10

Applicant: William Dobbie

Inventor： William Dobbie

IPC: G01N21/892

CPC classification number: G01N21/8921 ,  G01N2021/8887 ,  G01N2021/8912 ,  G01N2201/102

Abstract: The invention features a real time system for detecting streaks or scratches which occur substantially parallel to the direction of motion of a continuous web of material. The system can also be used to inspect sheets of material that may have been cut from such webs. An energy source such as an incandescent lamp or a bank of lamps generates electromagnetic energy that impinges upon the continuous web of material. CCD cameras receive reflected specular radiation from the web and generate video signals. The CCD cameras are disposed opposite the energy source and within 5.degree. of the plane perpendicular to the continuous web plane. Alternatively, the energy sources may transmit energy through the web material, which energy can be received by the CCD cameras. A processor is connected to the CCD cameras to process the video signals and to generate an enhanced signal-to-noise ratio signal that represents a streak or scratch on the web.

Abstract translation: 本发明的特征在于一种用于检测基本上平行于连续卷材的运动方向发生的条纹或划痕的实时系统。 该系统还可以用于检查可能已经从这种网上切割的材料的片材。 诸如白炽灯或一束灯的能量源产生撞击在连续的材料网上的电磁能。 CCD摄像机从网络接收反射的镜面辐射并产生视频信号。 CCD摄像机与能量源相对设置，垂直于连续卷筒纸平面的平面的5度内。 或者，能量源可以通过幅材材料传输能量，这些能量可由CCD照相机接收。 处理器连接到CCD摄像机以处理视频信号并产生增强的信噪比信号，其表示网上的条纹或划痕。

公开(公告)号：US5072127A

公开(公告)日：1991-12-10

申请号：US622349

申请日：1990-11-29

Applicant: Don W. Cochran ,  James R. Austin

Inventor： Don W. Cochran ,  James R. Austin

IPC: G01N21/84 ,  G01N21/88 ,  G01N21/90 ,  G01N21/954 ,  G01N21/956 ,  H04N7/18

CPC classification number: G01N21/909 ,  G01N21/8806 ,  H04N7/18 ,  G01N2021/8455 ,  G01N2021/8887 ,  G01N2021/95615 ,  G01N2201/06153 ,  G01N2201/102

Abstract: An engineered video inspection lighting system includes a three-dimensional array of solid-state light emitting diodes focused to an inspection area. A single high-current, low-duration pulse is applied to selected elements of the array. Light thus generated is passed through a diffuser and to a specimen. Light reflected from the specimen is received by a lens of a video camera disposed in an interior of the three-dimensional array. Data thus obtained is used to determine acceptability of the specimen in accordance with preselected standards.

Abstract translation: 设计的视频检查照明系统包括聚焦到检查区域的固态发光二极管的三维阵列。 单个大电流，低持续时间脉冲被施加到阵列的选定元件。 因此产生的光通过扩散器和样品。 从样本反射的光被设置在三维阵列内部的摄像机的镜头接收。 使用如此获得的数据来根据预选标准确定样品的可接受性。

公开(公告)号：US5068799A

公开(公告)日：1991-11-26

申请号：US726529

申请日：1985-04-24

Applicant: Harold M. Jarrett, Jr.

Inventor： Harold M. Jarrett, Jr.

IPC: G01N21/89 ,  G06T7/00 ,  G01N21/88

CPC classification number: G06T7/0004 ,  G01N21/89 ,  G01N2021/8887 ,  G01N2201/102 ,  G06T2207/20076 ,  G06T2207/30124

Abstract: A method and apparatus for detecting flaws in continuous web material illuminated by a light source and optically scanned to produce a digitalized electronic image of said material. The digitized image data representative of the continuous web material is stored in memory. The image data is also applied to a digital signal processor which identifies areas of the image which represent potential flawed areas of the continuous web material. A variety of spatial matched filters are employed to detect the flaws. Information concerning the locations of the potential flaws is transferred to a computer which analyzes in detail portions of the stored image in the vicinity of the identified areas. The processing performed in the computer verifies the presence of flaws in the material.

Abstract translation: 一种用于检测由光源照射的连续纤维网材料中的缺陷并被光学扫描以产生所述材料的数字化电子图像的方法和装置。 表示连续网页素材的数字化图像数据被存储在存储器中。 图像数据也被应用于数字信号处理器，其识别表示连续幅材材料的潜在有缺陷区域的图像区域。 采用各种空间匹配滤波器来检测缺陷。 关于潜在缺陷的位置的信息被传送到计算机，该计算机详细分析所识别区域附近的存储图像的一部分。 在计算机中执行的处理验证材料中存在缺陷。

公开(公告)号：US5064291A

公开(公告)日：1991-11-12

申请号：US504460

申请日：1990-04-03

Applicant: Kurt Reiser

Inventor： Kurt Reiser

IPC: B23K1/00 ,  B23K31/00 ,  B23K101/36 ,  G01N21/47 ,  G01N21/84 ,  G01N21/88 ,  G01N21/93 ,  G01N21/956 ,  H05K13/08

CPC classification number: H05K13/08 ,  G01N21/95684 ,  G01N2021/8816 ,  G01N2021/8845 ,  G01N2021/8887 ,  G01N2021/95646 ,  G01N2201/102

Abstract: Inspection of solder joints utilizing ilumination, reflected light intensity measurements to determine surface heights and comparison with predetermined inspection criteria to determine the integrity of the solder joint. A solder fillet (16b) is sequentially illuminated from first and second angles and optically scanned and reflected light intensity values at incremental values of inclination are measured. The heights of the fillet wall (16d) at predetermined points and the integrity of the fillet (16b) are determined using the measured reflected light intensity values and either using real-time computation or accessing an array of predetermined incremental inclination values as a function of the reflected light intensity values. Alternatively, the ratio of the sensed reflected light intensity values at each point may be used as an input variable to a one dimensional look-up table or for real-time computation. The solder fillet may be coated with a matte coating.

Abstract translation: 使用照明，反射光强度测量来检查焊点以确定表面高度，并与预定的检查标准进行比较，以确定焊点的完整性。 焊接圆角（16b）从第一和第二角度顺序地照射，并且测量以渐变值倾斜的光学扫描和反射光强度值。 使用测量的反射光强度值确定在预定点处的圆角壁（16d）的高度和圆角（16b）的完整性，并且使用实时计算或访问预定增量倾斜值的阵列作为 反射光强度值。 或者，每个点处的感测反射光强度值的比率可以用作一维查找表的输入变量或用于实时计算。 焊锡圆角可以涂有无光泽涂层。

公开(公告)号：US5011289A

公开(公告)日：1991-04-30

申请号：US439543

申请日：1989-11-20

Applicant: Nicholaas C. Swart

Inventor： Nicholaas C. Swart

IPC: G01N21/88 ,  G01N21/90 ,  G01N21/93 ,  G01N21/954

CPC classification number: G01N21/909 ,  G01N2021/8887 ,  G01N2201/102

Abstract: The invention relates to a method for inspecting the filling with sealing compound of a gutter present in an object, e.g. a metal lid. Such a method can according to the invention take place by carrying out the following steps:(1) providing an object to be inspected;(2) directing a light beam on said gutter;(3) previously determining the shape of the reflection picture of at least said gutter of an object satisfying a predetermined standard;(4) determining the picture of said gutter;(5) comparing the results of steps (4) and generating a rejection signal in case of a detected deviation outside a chosen tolerance range. Should only e.g. a diverging beam be used, it can happen that a local lack of filling compound is not detected by a sensing device, since from the zone in question no reflection in the direction of the sensing device can take place as a result of shadow-effect. In view thereof according to the invention preference is given to a method which is characterized by(6) carrying out step (2) in such a way that the gutter is illuminated from two directions which are both substantially perpendicular on the axis of said gutter and forming an angle with the plain of the gutter between about 45.degree. and 90.degree., and 135.degree. and 90.degree., respectively. Here use is made of two beams, one divergent and one convergent, respectively.

公开(公告)号：US5003831A

公开(公告)日：1991-04-02

申请号：US458586

申请日：1989-12-29

Applicant: Rainer Link ,  Wolfgang Nuding

Inventor： Rainer Link ,  Wolfgang Nuding

IPC: G01N21/91 ,  G01N27/84

CPC classification number: G01N21/91 ,  G01N27/84 ,  G01N2021/8887 ,  G01N2201/102

Abstract: In a process for monitoring a device for automatically detecting and evaluating surface cracks by means of magnetic powder or the dye penetration process comprising an image pick-up camera and a digital image processing and control unit, a typical defect pattern is projected by means of a projector onto the surface of the article to be examined in the pick-up region of the image pick-up camera and registered, and a defect indication is triggered if the device ceases to operate reliably.

Abstract translation: 在用于通过磁粉或包含图像拾取相机和数字图像处理和控制单元的染料渗透处理来自动检测和评估表面裂纹的装置的监测过程中，典型的缺陷图案通过 将投影仪投影到摄像机的拾取区域中被检查物品的表面并进行登记，并且如果设备不再可靠地操作，则触发缺陷指示。

公开(公告)号：US4969037A

公开(公告)日：1990-11-06

申请号：US387754

申请日：1989-08-02

Applicant: Richard Poleschinski ,  Detlef Gerhard

Inventor： Richard Poleschinski ,  Detlef Gerhard

IPC: G03B15/00 ,  G01B11/00 ,  G01N21/88 ,  H04N5/225 ,  H04N5/30

CPC classification number: H04N5/2256 ,  G01B11/00 ,  G01N21/8806 ,  H04N5/2354 ,  G01N2021/8887 ,  G01N2201/102

Abstract: An optical pick-up device for image processing systems has an objective for generating an optical image of a subject to be registered, an image-to-signal transducer, particularly a CCD camera that converts the optical image into a video signal and an illumination device for illumination of the subject to be registered in incident light. The rugged and high-performance illumination device, that yields an optimum light distribution in the plane of registration, has a plurality of infrared diodes that are arranged with equal spacing on at least one circle coaxial with the optical axis of the objective. It also has at least one annular deflection device that is similarly arranged coaxial with the optical axis. This deflection device concentrates the light emitted by the infrared diodes obliquely onto the subject from all sides.

Abstract translation: 用于图像处理系统的光学拾取装置具有用于产生要登记的被摄体的光学图像的目标，图像信号传感器，特别是将光学图像转换为视频信号的CCD照相机和照明装置 用于照明在入射光下注册的被摄体。 在配准平面中产生最佳光分布的坚固且高性能的照明装置具有多个红外二极管，其在与物镜的光轴同轴的至少一个圆周上具有相等的间隔。 它还具有与光轴同轴布置的至少一个环形偏转装置。 该偏转装置将红外二极管发出的光从各侧倾斜地集中到被检体上。

公开(公告)号：US4875170A

公开(公告)日：1989-10-17

申请号：US206924

申请日：1988-05-31

Applicant: Shigeo Sakurai ,  Sadao Umezawa ,  Saburo Usami ,  Hiroshi Miyata ,  Hajime Toriya ,  Kuniyoshi Tsubouchi ,  Ryoichi Kaneko

Inventor： Shigeo Sakurai ,  Sadao Umezawa ,  Saburo Usami ,  Hiroshi Miyata ,  Hajime Toriya ,  Kuniyoshi Tsubouchi ,  Ryoichi Kaneko

IPC: G01N21/88 ,  G07C3/00

CPC classification number: G01N21/88 ,  G07C3/00 ,  G01N2021/8874 ,  G01N2021/8887 ,  G01N2201/102

Abstract: The life expectancy of a mechanical structure that undergoes repeated loading is estimated by determining the maximum crack length on the surface of the structure. The maximum length of the cracks on the surface of the structure is related to the life ratio of the structure, wherein the life ratio is a ratio of the number of loads the structure has undergone to the number of loads the structure will undergo until failure. An optical system is used to measure the crack length of the cracks on the surface of the structure being inspected. A statistical distribution of greatest length cracks for a sampling of areas within a larger area can be made. Apparatus is provided to statistically process such distribution data to obtain a statistically estimated maximum length crack for the larger area. The maximum crack length determination can be used to estimate the life expectancy of the structure from the relationship between crack length and life ratio.

Abstract translation: 通过确定结构表面上的最大裂纹长度来估计经历重复加载的机械结构的预期寿命。 结构表面上的裂纹的最大长度与结构的寿命比有关，其中寿命比是结构经历的负载数量与结构将经历的负载数量之间的比例。 光学系统用于测量被检结构表面裂缝的裂纹长度。 可以对较大区域内的区域进行采样的最大长度裂缝的统计分布。 提供装置以统计处理这种分布数据以获得用于较大区域的统计估计的最大长度裂纹。 最大裂纹长度确定可用于根据裂纹长度和寿命比的关系来估计结构的预期寿命。

公开(公告)号：US4847510A

公开(公告)日：1989-07-11

申请号：US130508

申请日：1987-12-09

Applicant: Paul I. Douglas

Inventor： Paul I. Douglas

IPC: G01B11/30 ,  G01N21/84 ,  G01N21/95 ,  G01N21/956

CPC classification number: G01N21/8806 ,  G01B11/303 ,  G01N2021/845 ,  G01N2021/8887 ,  G01N21/9515 ,  G01N21/95607 ,  G01N2201/102

Abstract: A method is presented for the comparison of a second surface with a normalized surface model generated by reference to a group of esthetically acceptable first surfaces. A light pattern is typically projected onto a plurality of first surfaces moving beneath a light projection apparatus such that the light reflected from the first surfaces is received by a light receiver apparatus, and thereafter evaluated by appropriate computer software to define a nominal surface for the first group of esthetically acceptable surfaces. Each additional second surface passed below the light projection and light receiver apparatus is then compared to the normalized model generated by the first articles, such that undesirable surface deformities in the second article become readily apparent.

Abstract translation: 提出了一种用于将第二表面与通过引用一组美学上可接受的第一表面产生的归一化表面模型进行比较的方法。 通常将光图案投影到在光投射装置下方移动的多个第一表面上，使得从第一表面反射的光被光接收装置接收，然后由适当的计算机软件评估，以定义第一 一组美学可接受的表面。 然后将通过光投射和光接收装置下方的每个附加第二表面与由第一制品产生的归一化模型进行比较，使得第二制品中不期望的表面变形变得容易显现。