基于FPGA的线阵CCD高速非接触检测系统的研究

本文旨在设计一个基于FPGA的线阵CCD高速非接触在线检测系统。通过选用线阵CCD器件作为感光传感器来采集光信号;采用FPGA来产生并控制系统时序,包括CCD的驱动时序、模数转换时序及ADSP采集数据同步时序;结合DSP高速图像处理性能,采用高效的浮动阈值二值化算法对采集到的数字图像信号进行处理;通过对光学系统的定标最终给出了实验待测圆柱体的直径。实验结果表明,该系统相对传统的测量系统具有高速的优点。

Investigation for high-speed non-contact linear CCD measuring system based on FPGA

As the aim of designed a high-speed non-contact on line linear CCD measuring system based on FPGA technology.By utilizes linear CCD as the signal acquisition frontend.FPGA provides time sequences such as CCD working sequences,A/D conversion timing and synchronized timing for ADSP to collect data.Processing the collected digital sigal in virtue of DSP＇s high-speed performance and high-performance of float threshold binaryzation algorithms.Finally achieved the diameter of the tested cylinder through the calibration for the optical system.The experimental data indicates that the measuring system has high speed performance relative to the traditional measuring system.