The mainstream machine vision system, which is constituted by CCD camera, image acquisition card and computer, has some disadvantages of complicated structure, high-cost, large cubage and so on.
主流的机器视觉系统由CCD摄像头、采集卡和计算机组成，然而这类系统往往暴露出结构复杂、成本高、体积大等缺点。
This system is constituted by four modules: analog signals acquisition module, digital signals acquisition module, CPLD control module and central DSP module.
本系统由四个模块构成：模拟信号采集模块、数字信号采集模块、CPLD控制模块和DSP核心处理模块。
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