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1. 发明授权

US4170419A Optical web inspection system 失效
标题翻译：光学网检查系统
公开(公告)号：US4170419A
公开(公告)日：1979-10-09
申请号：US771103
申请日：1977-02-23
申请人： Richard G. Van Tyne , Weldon A. Sanders, Jr. , Richard D. De La Matyr , David L. Gates
发明人： Richard G. Van Tyne , Weldon A. Sanders, Jr. , Richard D. De La Matyr , David L. Gates
IPC分类号： G01N21/89 , G01N21/898 , G01N21/32 , G01N21/26 , G01N21/48
CPC分类号： G01N21/8915 , G01N21/8983
摘要： The specification discloses an optical web inspection system for detecting imperfections in a web having a longitudinal axis and moving in a plane across an inspection area. Radiation means is disposed above the plane of the web and transverse to the longitudinal axis of the web for directing radiant energy on the web at the inspection area. A plurality of sensors are mounted transverse to the longitudinal axis of the web and above the inspection area for receiving reflected radiation from successive transverse portions of the web passing across the inspection area. The plurality of sensors generate electrical output signals representing the intensity of the reflected radiation from the successive transverse portions of the web. Circuitry for periodically summing the electrical output signals from selected ones of the sensors is provided to generate a summation signal representative of the sum of reflected radiation from selected discrete segments of a plurality of the transverse portions of the web. The system further includes circuitry for comparing at least one of the electrical output signals with the summation signal for determining whether an imperfection exists within the web.
摘要翻译：本说明书公开了一种用于检测具有纵向轴线并在跨越检查区域的平面中移动的幅材中的缺陷的光学卷材检查系统。辐射装置设置在幅材的平面上方并且横向于幅材的纵向轴线，以在检查区域上引导幅材上的辐射能量。多个传感器横向于幅材的纵向轴线并且在检查区域上方安装，用于接收穿过检查区域的幅材的连续横向部分的反射辐射。多个传感器产生表示来自幅材的连续横向部分的反射辐射的强度的电输出信号。提供用于周期性地对来自选定传感器的电输出信号进行求和的电路以产生表示来自幅材的多个横向部分的所选离散段的反射辐射之和的求和信号。该系统还包括用于将至少一个电输出信号与求和信号进行比较的电路，用于确定网内是否存在缺陷。

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