基于便携式LIBS的高温承压钢种快速识别分析  

Fast Identification and Analysis of High Temperatureand High Pressure Steel Based on Portable LIBS

作　　者：陆盛资 董美蓉[2] 尚子瀚 王磊 李绪丰 李至淳 蔡俊斌 陆继东[2] Lu Shengzi;Dong Meirong;Shang Zihan;Wang Lei;Li Xufeng;Li Zhichun;Cai Junbin;Lu Jidong(Guangdong Institute of Special Equipment Inspection and Research,Foshan 528251,Guangdong,China;College of Electric Power,South China University of Technology,Guangzhou 510640,Guangdong,China)

机构地区：[1]广东省特种设备检测研究院,广东佛山528251 [2]华南理工大学电力学院,广东广州510640

出　　处：《应用激光》2024年第10期120-127,共8页Applied Laser

基　　金：广东省市场监督管理局科技项目(2023CT02)。

摘　　要：为满足激光诱导击穿光谱(laser-induced breakdown spectroscopy, LIBS)技术在工业现场中快速检测的应用需求,对基于便携式LIBS设备的高温承压钢种快速识别分类模型的建立与优化方法开展研究。选取6种常见的高温承压钢作为实验研究对象,在对采集光谱进行预处理后,分别采用支持向量机(SVM)、递归特征消除法结合支持向量机(RFE-SVM)和线性判别分析结合支持向量机(LDA-SVM)的方法建立分类模型,以不同分类模型的预测准确度和运行时长为主要评价指标开展分析评估,并讨论分析了输入数据量及光谱特征维度变化对模型性能的影响。结果表明,应用LDA-SVM模型的分类性能最优,分类预测的准确率为95.28%,分类所花费的平均时间约为0.011 s。研究为LIBS技术对钢种的快速分类提供指导方法,为便携式LIBS智能快速检测设备的发展提供了技术应用基础。To address the industrial application requirements for rapid detection using Laser-Induced Breakdown Spectroscopy(LIBS),a swift classification method for heat-resistant steel utilizing portable LIBS equipment has been developed.The study involved six types of typical steel as experimental specimens.The classification models were respectively build based on the support vector machine(SVM),recursive feature elimination method combined with support vector machine(RFE-SVM)and linear discriminant analysis combined with support vector machine(LDA-SVM).The prediction accuracy and running time were used as the main evaluation indexes to evaluate each model,and the impact of input data and spectral feature dimension change on model performance was discussed.The results showed that the classification performance of the LDA-SVM model achieved the best performance,the accuracy of classification prediction was 95.28%,and the average time spent on classification was around 0.011s.This research offers a methodological guide for the rapid classification of steel types using LIBS technology and lays the groundwork for the development of intelligent,rapid detection capabilities for portable LIBS devices.

关 键 词：便携式激光诱导击穿光谱设备 高温承压钢 快速检测 支持向量机 

分 类 号：O657.319[理学—分析化学]