【摘要】 针对在凹版印刷中表征套印误差信息的色标信号检测问题。本文依据各颜色画面相对背景色对光能吸收不同的光学原理,利用半透半反光玻片的异面性和光电池光电转换功能,设计和实现了一种色标检测光电传感器。针对光电池光电转换输出信号较弱且非数字性的问题,进行了信号调理。实验结果和现场应用表明,该光电传感器具有结构简单、检测距离远((10±2)mm)、光斑半径小(Φ1.5mm)、灵敏度高、响应速度快(0.2ms)、性能稳定可靠等优点。更多还原

【Abstract】 For the sake of solving the color mark detecting problem of overprinting error information in gravure printing,an optical module of detecting color marks is designed and realized based on the principle that the reflected light energy absorption is different when various colored bars are irradiated by a white light source.In addition,a sort of glass slice with one face possessing semitransparent capacity,the half reflectivity and the function of a photocell’s photovoltaic conversion are utilized.As a result of weakness and non-digital of output signal,an output signal is magnified and transformed.The experiment result shows that the sensor has many good features,such as an uncomplicated structure,far detecting distance((10±2) mm),little facula radius(Φ1.5 mm),high sensitivity,fast response speed(0.2 ms),high stability and reliability,etc.更多还原