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冷轧带钢针孔在线检测系统设计与应用
引用本文:石桂芬,何永辉,王康健.冷轧带钢针孔在线检测系统设计与应用[J].宝钢技术,2013(6):59-64.
作者姓名:石桂芬  何永辉  王康健
作者单位:宝山钢铁股份有限公司研究院,上海,201900;宝山钢铁股份有限公司冷轧厂,上海,201900
摘    要:介绍一套基于光电检测技术的冷轧薄带钢针孔在线检测系统,该系统可有效识别直径≥15μm的针孔。高亮度LED光源照射在带钢上表面,光电接收器对透过针孔的光线进行汇聚,再被光电倍增管接收,转化为电信号,信号处理电路对电信号进行识别分类,最终由采集卡采集;边部针孔检测模块对边部进行精确跟踪和遮挡,保证系统在趋零盲区情形下实现边部针孔检测。运行证明,系统具有较高的实时性、可靠性和精确性。

关 键 词:带钢针孔  检测  光电

Design and application of online pinhole inspection system for cold rolled strips
SHI Guifen,HE Yonghui and WANG Kangjian.Design and application of online pinhole inspection system for cold rolled strips[J].Baosteel Technology,2013(6):59-64.
Authors:SHI Guifen  HE Yonghui and WANG Kangjian
Affiliation:1. Research Institute, Baoshan Iron & Steel Co. , Ltd. , Shanghai 201900, China; 2. Cold Rolling Plant, Baoshan Iron & Steel Co. , Ltd. , Shanghai 201900, China)
Abstract:An online pinhole inspection system for cold rolled steel strips based on photoelectric inspection technology was introduced. This system can accurately detect micro pinholes with a diameter no less than 15 μm. The design of the system is as follows:super bright LED lights send light on strip surface all the time; the light passing through pinholes is received and amplified by a photoelectric receiver, and then converted by a photomultiplier into electric signals, which are recognized and classified by a signal processing circuit later and collected by a signal acquisition card ; a detector for pinholes on the edge of strips accurately tracks and shields the strip edge so that detection of pinholes on strip edge can be achieved with a small-size blind spot. Operation practice has proved that the system has good real-time performance, high reliability and high accuracy.
Keywords:pinholes in steel strips  inspection  photoelectricity
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