摘要
针对传统接触式检测系统与被检测物体接触后会产生压力和变形,触头会出现横向分辨率问题,影响检测精度,提出基于激光三角法的单片机检测系统。首先对激光三角法检测原理进行分析,通过单片机驱动法对CCD进行驱动,对CCD输出信号进行放大和二值化处理,以获取被检测物体光斑成像在光敏单元的相应位置,保证检测精度,然后设计单片机检测接口电路,激光器产生的激光束经凸透镜射至被检测物表面,经物体表面散射,利用CCD映射至光敏面,通过单片机控制CCD对图像进行采集,计算光斑位置,以获取检测结果,最后实验结果表明,本文系统提高了单片机的检测精度高,而且结果要优于其它系统。
The traditional contact detection system and the object to be detected after contact pressure will produce deformation, the contact will appear horizontal resolution, the impact of detection accuracy. To this end, a new single chip detection system based on laser trigonometry is studied. The principle of laser triangulation is introduced, and the overall structure of the system is given. The CCD driver is driven by the singlechip driver method, and the CCD output signal is amplified and binarized to acquire the corresponding spot of the detected object spot on the photosensitive cell to ensure the detection accuracy. Analysis of the basic idea of single-chip test, design of single-chip test interface circuit. The laser beam generated by the laser is irradiated to the surface of the object to be detected by a convex lens, and is scattered on the surface of the object. The CCD is mapped to the photosensitive surface. CCD is used to collect the image and calculate the spot position to obtain the detection result. Experimental results show that the designed system has high detection accuracy.
作者
王团部
WANG Tuanbu(Xijing University, Xi＇ an 710123, China)
出处
《激光杂志》
北大核心
2018年第6期120-124,共5页
Laser Journal
基金
西京学院校级教改项目(No.JGYB1640)
