【摘要】 研制了一种基于数字信号处理器(DSP)技术的双线阵CCD红外测宽系统。测量系统采用CCD传感器光采样与ADC数据采集、DSP数据处理3级流水线结构,利用板材自身红外辐射进行测量。根据CCD曝光时间与输出模拟电压的关系,自动调整CCD增益,从而在高速数据处理的同时保持信号不失真,提高测量准确度。由于测量系统采用基于立体视觉原理的双线阵CCD测量方法,消除了板材横摆、跳动、倾斜对测量精度的影响,因而在无背光源情况下,实现了宽带钢宽度的高速和高精度测量。更多还原

【Abstract】 The system of infrared width gauge with dual-linear CCD,based on digital signal processor(DSP) is introduced.The system adopts the three-level pipeline structure:optical acquisition of the CCD sensor,data acquisition of analog-to-digital converter(ADC) and the data procession of DSP.According to the relationship between the exposure time and the output analog voltage of CCD,the gain of CCD is regulated by the DSP chip automatically.So the signal is kept from distorting,and the accuracy is increased.The dual-linear CCD method based on the stereoscopic vision principle can eliminate the influence of weaving,hopping and tilting of the strip.In a word,under the condition of no back lighting,both high speed and high accuracy of measuring the width of wide strip can be achieved.更多还原