基于小孔光学系统与面阵CCD的激光位移传感器系统设计  

Laser displacement sensor system based on pinhole optical system and array CCD

作　　者：孙浩[1] 薛丹丹[1] 韩焱[1] 

机构地区：[1]中北大学电子测试技术国家重点实验室,山西太原030051

出　　处：《应用光学》2012年第6期1152-1155,共4页Journal of Applied Optics

基　　金：山西省自然科学基金(2010011002-2)

摘　　要：为了降低激光位移传感器的生产成本,提出一套新型激光位移传感器系统的设计方法。该设计基于三角测距原理,使用CCD单板机作为光电探测器,换用小孔光学系统替代透镜,并针对小孔光学系统的特点对传感器系统重要参数的确定方法进行了研究,编写图像处理算法提取目标图像中的位移信息,从而达到非接触式位移测量目的。搭建了一套该新型激光位移传感器系统进行位移测量实验,结果表明此系统可以达到量程为50mm、精度为1mm的测量需求。In order to reduce the production cost of laser displacement sensor, we put forward a design method of a new type of laser displacement sensor system. Based on the triangle meas- urement principle, the design uses the CCD single board computer as the photoelectric detec- tor, utilizes the pinhole optical system to replace lens. We discussed the method to determine the important parameters of the senor system according to the characteristics of the pinhole op- tical system, and wrote the image processing algorithm for extracting displacement information of the target image, so as to achieve non-contact displacement measurement. Finally, we set up a set of this new type of experimental system of laser displacement sensor to carry on dis- placement measurement experiment, and the results show that this system can meet the meas- urement requirements of 50 mm range and 1 m precision.

关 键 词：小孔成像 CCD 激光三角测距 图像处理 

分 类 号：TN249[电子电信—物理电子学] TP212[自动化与计算机技术—检测技术与自动化装置]