基于条纹投影的复杂结构多维度信息传感技术(内封面文章·特邀)  

Multi-dimensional information sensing technology of complex structures based on fringe projection(inner cover paper·invited)

作　　者：陈正东 张启灿[1] 吴周杰 CHEN Zhengdong;ZHANG Qican;WU Zhoujie(College of Electronics and Information Engineering,Sichuan University,Chengdu 610065,China)

机构地区：[1]四川大学电子信息学院,四川成都610065

出　　处：《红外与激光工程》2024年第9期69-87,共19页Infrared and Laser Engineering

基　　金：国家自然科学基金项目(62205226,62075143);博士后创新人才支持计划项目(BX2021199);博士后面上基金项目(2022M722290);江西省重大科技研发专项(20224AAC01011)。

摘　　要：随着精密加工和智能制造业的高速发展,在航空航天、汽车工业、工业检测等领域中,对复杂结构,例如:发动机组件、蜂窝结构件等在生产制造与使用过程中的形貌、形变及应变等多维度信息的测量需求日益增加。最近兴起的数字图像相关辅助条纹投影技术已被证明在复杂结构的形貌和形变测量方面具有独特优势。但目前由于两类方法各自不同的技术特点,基于两者结合的形貌、形变测量方法在测量精度、效率等方面存在诸多矛盾,难以兼顾高分辨率、多维度的测量需求,阻碍了该类技术进一步拓展应用。综述了课题组近年来发展的基于条纹投影的复杂结构多维度信息传感技术及最新的研究进展,系统回顾了两类方法结合时的条纹与散斑信息干扰、原始纹理被破坏、编码效率低等技术难点,并总结了对应的解决方案,最终实现了对复合材料编织结构、颗粒膨胀减震结构以及层叠结构等复杂结构的多维度信息传感。文中所提方法在不增加额外硬件的前提下,将传统条纹投影测量系统升级为多维度信息传感系统,可以同时测量2D纹理(T)、4D形貌(x,y,z,t)以及分析维度力学参数(形变d和应变s),突破了复杂结构高分辨率、高精度纹理形貌重建与形变应变分析的技术壁垒,有望在复杂结构可靠性分析、复合材料性能评估等领域中得到应用。Objective With the rapid development of precision machining and smart manufacturing,there is an increasing demand for multi-dimensional information,including the shapes,deformations,and strains of complex structures like engine components and honeycomb structures,during their production and usage across fields such as aerospace,automotive industries,and industrial testing.The recently emerging digital image correlation-assisted fringe projection technology has demonstrated unique advantages in measuring the shape and deformation of complex structures.However,due to the distinct technical characteristics of these two methods,combining them for shape and deformation measurement presents several challenges in terms of measurement accuracy and efficiency,making it difficult to meet high-resolution and multi-dimensional measurement requirements,thus hindering the further application of this technology.This study reviews a multi-dimensional information sensing technology for complex structures based on fringe projection,developed by the research group in recent years,along with the latest research progress.It systematically revisits the technical challenges encountered when combining the two methods,such as fringe and speckle information interference,destruction of the original texture,and low encoding efficiency,and summarizes the corresponding solutions.Ultimately,it achieves multi-dimensional information sensing of complex structures such as composite woven structures,particle expansion damping structures,and laminated structures.The proposed solution upgrades the traditional fringe projection measurement system into a multi-dimensional information sensing system without additional hardware,enabling simultaneous measurement of 2D texture(T),4D shape(x,y,z,t),and mechanical parameters related to analytical dimension(deformation and strain).This breakthrough overcomes technical barriers to high-resolution,high-precision texture shape reconstruction and deformation-strain analysis of complex structures,and is expected

关 键 词：条纹投影轮廓术 多维度传感 数字图像相关 复杂结构 

分 类 号：TN206[电子电信—物理电子学]