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讨论了一种冷轧钢带表面缺陷在线检测系统的基本组成和原理，该系统能测量钢带的宽度，检测边裂、孔洞和重皮等缺陷。研究了采用存储器地址映像技术和双体ＲＡＭ总线切换技术设计的计算机接口，该接口能使数据的计算机输入和处理并行工作，省去了数据输入占用ＣＰＵ的时间，解决了实时检测系统高速数据的计算机输入和处理存在的时间冲突的难题。
The basic composition and principle of an on-line inspection system for surface defects of cold-rolled steel strip are discussed. The system can measure the width of steel strip and detect defects such as edge cracks, holes and skins. The computer interface designed by memory address mapping technology and dual-bus RAM bus switching technology is researched. This interface can make the data computer input and processing work in parallel, eliminating the time for data input and taking up the CPU, and solving the problem of high speed data Computer input and handling of the existing problems of time conflict.