刀具柱面二维条码识读发光二极管照明均匀度仿真分析  

Simulation and Analysis of Low Emitting Diode Illumination Uniformity for 2-D Bar Code Identification on Cutting Tool Cylindrical Surface

作　　者：王红霄[1] 何卫平[1] 雷蕾[1] 林清松[1] 

机构地区：[1]西北工业大学现代设计与集成制造重点实验室,西安710072

出　　处：《上海交通大学学报》2011年第7期945-948,953,共5页Journal of Shanghai Jiaotong University

基　　金：国家自然科学基金资助项目(50505039);学校重点毕业设计支持项目

摘　　要：为了预测刀具柱面条码图像的光源设计能否达到照明均匀度要求,通过计算机辅助光学照明软件,在实际发光二极管(LED)光源实体模型、发光特性、光强分布分析的基础上建立仿真光源模型,根据实际应用要求进行拓展模型设计.分析了3种关键因素对LED照明均匀度的影响规律,对仿真和实验结果通过拟合曲线进行对比分析,验证了仿真模拟的正确性和指导性.研究结果对刀具柱面二维条码识读时的光学系统设计具有指导意义.To predict the illumination uniformity of the lighting design for 2-dimensional bar code image collection on cutting tool,this paper analyzed the practical low emitting diode（LED） light source model,its luminescence properties and the light intensity distribution based on a computer aided optical illumination software,built a light source simulation model,and designed a development model according to the practical application requirement.It also simulated and analyzed the three key factors on the impact of LED illumination uniformity,implemented experiments based on simulation,contrasted the simulation and experimental results by fitting the curve.The experimental results show that the simulation can correctly predict the actual uniformity of illumination.The research can help the optical system design for identifying 2-dimensional bar code directly marked on cylindrical surface of cutting tool.

关 键 词：二维条码 光学系统 照明均匀度 

分 类 号：TP139.9[自动化与计算机技术—控制理论与控制工程]