一次性注射器针头反表识别系统

介绍一种能正确识别一次性注射器针头在装配过程中是否反表的系统。系统由面阵光源、普通数字摄像机、运动控制卡、步进电机、针排夹具和接近开关等组成；采用虚拟仪器的IMAQ Vision模块进行编程，对摄像机采集到的针头部分图像进行自动阈值处理、二值化、目标定位、模板匹配等图像分析处理；由于针排与针可能存在一定的倾斜，所以，在模板匹配前需要对采集到的图像进行校正；通过计算模板与搜索图之间的相似度对针头反表进行识别，并进行显示报警。

Recognition system of inaccurate fitting of one-off injectors

The system that can recognize whether a pinhead is inaccurate fitting and location in hackle is introduced.The system includes several parts: lamp-house,pick-up camera,movement control card,step motor,hackle and switch.Image collected by pick-up camera is auto-threshold,binary,located and template matched.As there is a tilt between hackle and pins,collected image must be rectified before matching template.After the comparison of template and searching graph,the system can get similarity automatically,the inaccurate fitting pinhead can be recognized easily,and it also can give an alarm while there is inaccurate fitting.