【摘要】 针对工业上一些无法正对待测端面安装相机的直径测量场景,设计了一种由3个激光投线器、1个成像透镜及1个面阵CMOS相机组成的圆柱工件直径测量系统,放置于地面上倾斜投影并成像。搭建了测量系统,从图像中获得亚像素端点坐标,代入标定方程解算世界坐标,并通过几何模型计算待测直径。实验结果表明,该系统能在设计待测值附近准确测量工件的端面直径,测量精度在±0.1 mm以内,满足工业测量高精度要求。更多还原

【Abstract】 In view of some industrial diameter measurement scenes where the camera cannot be installed on the end face to be measured,a cylindrical workpiece diameter measurement system is designed,which consists of three linear lasers,an image lens and an area array CMOS camera. It is placed on the ground,projectes and images obliquely. A measurement system is set up. The sub-pixel endpoint coordinates from the image are obtained. The calibration equation is substituted to solve the world coordinates,and the diameter to be measured through the geometric model is calculated. The experimental results show that the system can accurately measure the diameter of the workpiece near the designed value,and the measurement accuracy is within ±0.1 mm,which meets the high precision requirements of industrial measurement.更多还原