LabVIEW在腔衰荡光谱检测系统中的应用  

Application of LabVIEW in Cavity Ring-Down Spectroscopy Detection System

作　　者：秦浩 凌六一[1,2] QIN Hao;LING Liuyi(School of Electrical and Information Engineering,Anhui University of Science and Technology,Huainan 232001,China;School of Artificial Intelligence,Anhui University of Science and Technology,Huainan 232001,China)

机构地区：[1]安徽理工大学电气与信息工程学院,安徽淮南232001 [2]安徽理工大学人工智能学院,安徽淮南232001

出　　处：《东莞理工学院学报》2024年第1期73-78,共6页Journal of Dongguan University of Technology

摘　　要：腔衰荡光谱技术(Cavity Ring Down Spectroscopy,CRDS)具有高精度和高灵敏度,是一种常应用于微量气体浓度检测的方法,而采用这项技术的关键就是衰荡时间的准确获取。本文为此设计一种基于LabVIEW的腔衰荡信号在线处理系统,实现对衰荡信号的实时采集、平均、拟合、显示和保存。采用外部调制二极管激光器和高反腔搭建CRDS装置,获取实际的衰荡信号,用该系统处理测得的衰荡信号与其他软件的处理结果对比。实验表明,所编写的在线腔衰荡信号处理系统,可实现对衰荡时间的准确获取。Cavity Ring-Down Spectroscopy(CRDS)is a method commonly used for detecting trace gas concentrations due to its high precision and sensitivity.The key to using this technique is the accurate acquisition of decay time.This paper presents a LabVIEW-based online signal processing system for cavity ring-down signals.It enables real-time acquisition,averaging,fitting,display,and saving of the decay signals.An external modulated diode laser and a high-finesse cavity are used to construct the CRDS setup,and the obtained decay signals are processed using this system and compared with the results from other software.The experiment demonstrates that the developed online cavity ring-down signal processing system can accurately acquire decay time.

关 键 词：腔衰荡光谱技术 二极管激光器 衰荡时间 LABVIEW 

分 类 号：TP274[自动化与计算机技术—检测技术与自动化装置]