Research on Visible Measurement of Dispersion Spot at Four Quadrant Photoelectric Detector

摘要：

This paper presented a visible measurement method of dispersion spot at a four-quadrant detector based on digital image processing according to the problem of big measurement error and low efficiency in the existing production process used by the indirect measurement method of dispersion spot based on fourquadrant detector output signal. This method designed a visible measurement optical system and established a visible measurement mathematical model of fourquadrant detector dispersion spot, obtained the fourquadrant detector photosensitive surface and dispersion spot geometrical coordinates and size through digital image processing for the fourquadrant detector photosensitive surface and the dispersion spot, then got the adjustive parameter of out-of-focus distance automatically. The results of the experiment show that this method is intuitive and simple, measurement accuracy is improved from 0.02mm to 0.004mm and the measurement time is reduced from 15 minutes to 2 minutes.

关键词： Quadrant photoelectric detector Visible measurement Digital image processing Dispersion spot

作者: Lingkong He Yong Gao Shucun Ning

作者单位: Faculty of Automation and Information Engineering, Xian University of Technology, Xian 710048 Chin Army Representation Office, Xiguang Group, Xian 710043 China Faculty of Automation and Information Engineering, Xian University of Technology, Xian 710048 Chin

会议类型: 国际会议

会议名称: 2011 International Conference on Mechatronics and Materials Processing(2011年机电一体化与材料加工国际会议 ICMMP)

会议地点: 广州

会议语种:英文

页码: 2086-2091

在线出版日期: 2011-11-18（万方平台首次上网日期，不代表论文的发表时间）