基于遗传算法的激光位移传感器小型化结构设计  

Miniaturization design of laser displacement sensor structure based on genetic algorithm

作　　者：黄代鑫 杨志鹏 焦思程 王伟[1,3] 徐敏[1,2] HUANG Daixin;YANG Zhipeng;JIAO Sicheng;WANG Wei;XU Min(Shanghai Engineering Research Center of Ultra-Precision Optical Manufacturing,Fudan University,Shanghai 200438,China;School of Information Science and Technology,Fudan University,Shanghai 200438,China;Institute of Optoelectronics,Fudan University,Shanghai 200438,China)

机构地区：[1]复旦大学上海超精密光学制造工程技术研究中心,上海200438 [2]复旦大学信息科学与工程学院,上海200438 [3]复旦大学光电研究院,上海200438

出　　处：《光学技术》2024年第4期385-390,共6页Optical Technique

基　　金：国家重点研发计划项目支持(J0149(3)-2325-KYF)。

摘　　要：为实现激光位移传感器结构的小型化,采用了一种单片反射镜式激光位移传感器结构,并利用遗传算法对该结构的灵敏度、工作距离和传感器结构参数进行优化。首先,在该结构中利用一片反射镜将入射光进行偏折,使得传感器内部的光路拓宽到横向空间,以提升传感器内部的空间利用率。随后,通过遗传算法对传感器的结构进行优化设计,得到在特定约束条件下传感器的结构参数最优解。最后,设计相应的成像系统进行验证。结果表明,与传统的激光位移传感器相比,单片反射镜式结构可在保证传感器灵敏度和工作距离不变的情况下,将传感器的纵向尺寸从55.9mm减小至31.0mm。表明反射镜的引入可有效减小传感器的尺寸。结论对于激光位移传感器的小型化设计具有参考意义。In order to achieve miniaturization of the laser displacement sensor structure,a single-mirror reflective laser displacement sensor structure is used.Sensitivity,working distance,and system structural parameters of this structure are optimized through research.Initially,a single mirror is used in this structure to deflect incident light in the direction of the laser,widening the optical path within the sensor to improve spatial utilization.Subsequently,agenetic algorithm is employed to optimize the design of the sensor's structure,obtaining the optimal parameters under specific constraints.Finally,an appropriate imaging system is designed for validation.The result indicates that,compared to traditional laser displacement sensor,the single-mirror reflective structure can reduce the sensor's longitudinal dimension from 55.9mm to 31.0mm while maintaining sensor sensitivity and working distance.This suggests that the introduction of the mirror effectively reduces the sensor's size.This conclusion holds significance for the miniaturization design of laser displacement sensor.

关 键 词：激光三角法 小型化 参数优化 遗传算法 

分 类 号：TP212.1[自动化与计算机技术—检测技术与自动化装置]