红枣输送运动及其图像采集的可靠性分析

摘要

滚子式输送机构在机器视觉分级系统中应用最为广泛.通过对滚子输送机构中的红枣进行受力分析和运动分析,获取了红枣从刚接触摩擦带由静止加速到与滚子接触点处线速度相同时水平前进距离的数学模型;获取了红枣加速转动过程结束后,定距离间隔采集红枣图像时红枣转动角度的数学模型.以新疆骏枣为例,通过确定合适的传输速度、相机安装位置和相机对枣的图像采集次数,能够采集到红枣整个表面信息,从而保证图像采集的可靠性.%Roller conveyor turning mechanism is the most widely used in machine vision grader system.Through force analysis and motion analysis of jujube in it,the horizontal distance mathematical model of jujube from just contact friction was gotten by static acceleration to the same as linear velocity at roller contact point and the rotation angle mathematical model when grabbing jujube images in a certain distance after the accelerating rotation process.Studying the Chinese date of Sinkiang,by determining the appropriate transport speed,position of the camera,and the camera image acquisition frequency of jujube,all the surface information can be gotten,which can ensure the reliability of image acquisition.