1、 摘摘 要要 传统汽车纵梁检测主要以人工方式进行，检测工人把纵梁和标准纵梁图纸进行 比对来检测是否有漏孔、用千分尺等工具手动测量孔心位置是否合乎要求。这种检 测方式严重依赖人工，可靠性不高，效率不高，不适应现代化工业生产的需要。为 克服这些弊端，提高生产效率，设计了一种以图像处理技术为基础的自动化检测装 置。首先对纵梁基本结构、数字图像处理技术和汽车检测技术做了简单的介绍，然 后对检测装置的总体设计方案做了详细的介绍， 之后对装置的具体结构进行了设计， 并对控制系统进行设计。 控制系统使用西门子 s7-200 系列 PLC 实现了检测过程的 自动化运行，并使用液压系统实现了纵梁支撑部件的运动控
2、制。该自动化检测装置 操作简单，可靠性高，检测精度高，大大改善了生产效率。 关键词 纵梁 自动检测 可编程序控制器 液压系统 Abstract Detection of the traditional auto girder has been conducted primarily in the manualbasis .The worker test whether the holes is whole by compare with the standard drwing and test the position of hole whether is right using the mi
3、crometer . This approach relies serious on the workers, reliability and efficiency is low and does not meet the demand of modern industrial production. To overcome these shortcomings, improve productive efficiency, designed a automatic equipment which is base on image processing techniques. First, m
4、aking a brief introduction to the basic structure of the girder basic strukture,digital image processing technology and vehicle inspection technology, then detailedly introduce the holistic design proposal of the testing equipment and make the desigen of equipment and the control system. The control system uses s7-200 series PLC of SIEMENSPLC s7-200 to achieve the automation of the detection process, and uses the hydraulic system to control some of the components. The automatic detection devic
