基于IMAQ Vision和PLC的水果大小自动分级系统设计

Design of Fruit Size Automatic Grading System Based on IMAQ Vision and PLC

水果大小是水果分级的一个重要依据,随着计算机技术和图像处理技术的飞速发展,计算机视觉技术被广泛用于水果品质的检测。所设计的水果大小自动分级系统由机器视觉检测系统和基于PLC的水果传送分拣机构组成。使用LabbVIEW软件编写水果大小自动分级系统的监控界面,并实现对CCD摄像机的控制及获取图片;使用IMAQ Vision工具包对所获取的水果图片进行处理,并进行大小分析,根据大小的等级由LabVIEW通过串口通信发送命令给PLC,由PLC控制水果的传送并进入对应的分级口,从而完成水果的自动分级。实际运行证明该系统能实时进行动态采集图片,有效地进行水果大小分析及自动分级。

Fruit size is an important basis for fruit grading. With the rapid development of computer technology and image processing technology, computer vision technology is widely used in fruit quality detection. The fruit automatic grading system consists of machine vision inspection system and fruit sending sorting mechanism based on PLC. LabVIEW is used to develop monitoring interface and control CCD camera to get pictures. IMAQ Vision toolkit is used to analyze the size of fruit. According to the fruit size, commands are sent to PLC through serial communication by LabVIEW, and then PLC controls the transmission of the fruit into the corresponding port to accomplish the automatic grading. Experiments show that the system achieves dynamic image acquisition real-time, fruit size analysis and automatic grading effectively.