公开(公告)号：US5017795A

公开(公告)日：1991-05-21

申请号：US519322

申请日：1990-05-07

申请人： Roger G. Dower ,  Robert W. Acres ,  Harold R. Davis ,  Andrew N. Donham ,  Nader Riahi ,  Richard W. A. Slamka ,  Lechoslaw K. Urbaniak

发明人： Roger G. Dower ,  Robert W. Acres ,  Harold R. Davis ,  Andrew N. Donham ,  Nader Riahi ,  Richard W. A. Slamka ,  Lechoslaw K. Urbaniak

IPC分类号： G01N21/954 ,  G06T7/00

CPC分类号： G01N21/909 ,  G06T7/0006 ,  G01N2021/8887 ,  G01N2021/889 ,  G01N2021/9546 ,  G01N2201/102 ,  G06T2207/30136

摘要： Apparatus is disclosed for detecting irregularities or flaws in seams such as the seams of cans. The apparatus includes means for irradiating the surface of the seam to produce reflected radiation signals, a plurality of radiation sensors, each having a selected field of view of the surface, and each producing sensor output signals dependent on reflected radiation signals received within such field of view. A signal processing means receives sensor output signals for a succession of fields of view along the longitudinal length of the seam and derives therefrom signal data representing a dimensional feature of the seam. Signl comparison means compares such derived data with signal data representing an acceptable dimensional limit and produces a rejection signal in the event that the dimensional feature does not fall within the limit. Means for classifying the nature of an irregularity is also disclosed, as is transport means for the movement of seams though the field of view of the sensors.

公开(公告)号：US5430381A

公开(公告)日：1995-07-04

申请号：US131497

申请日：1993-10-04

申请人： Roger G. Dower

发明人： Roger G. Dower

IPC分类号： G01B7/287 ,  G01B7/34 ,  G01R29/12 ,  G01B7/28

CPC分类号： G01B7/287 ,  G01B7/34

摘要： Electrostatic imaging apparatus comprises a plurality of electrostatic radiators and a signal generator for driving the radiators to produce an electrostatic field having characteristics modifiable by the presence of an object within the field. The field characteristics are detected and processed to produce output signals representative of a surface profile of the object.

摘要翻译： 静电成像装置包括多个静电放热器和用于驱动散热器的信号发生器，以产生具有可由场内存在的物体修改的特性的静电场。 检测并处理场特性以产生表示物体的表面轮廓的输出信号。

公开(公告)号：US4845496A

公开(公告)日：1989-07-04

申请号：US100486

申请日：1987-09-24

申请人： Roger G. Dower ,  Dale C. Penner ,  Robert S. Hannebauer

发明人： Roger G. Dower ,  Dale C. Penner ,  Robert S. Hannebauer

IPC分类号： G01D5/244

CPC分类号： G01D5/244

摘要： An electro-optical displacement sensor comprises an optical source including a plurality of optical grating lines for producing from an incident optical signal a transmitted optical signal having a spatially periodic intensity pattern. Optical sensing means receives the transmitted signal as an input across a plurality of optical receptors, each of which receptors provides an output signal corresponding to the amplitude of the transmitted signal as sensed by the receptor. The receptors are spaced one from the other by a distance different from the fundamental spatial wavelength of the transmitted signal. Signal conditioning means derive a signal vector from the receptor output signals, the signal vector than being processed to derive first and second independent component signals. The component signals are then combined to produce an interpolated phase signal corresponding to the interpolated position of the grating lines relative to the optical receptors.

摘要翻译： 电光位移传感器包括光源，其包括多个光栅线，用于从入射光信号产生具有空间周期性强度图案的透射光信号。 光学感测装置接收传输的信号作为跨多个光学接收器的输入，每个光学接收器中的每一个接收器提供对应于受体所感测到的传输信号幅度的输出信号。 受体彼此间隔一定距离与发射信号的基本空间波长不同。 信号调理装置从受体输出信号中导出信号向量，信号向量比被处理以得到第一和第二独立分量信号。 然后将分量信号组合以产生对应于光栅线相对于光学接收器的内插位置的内插相位信号。