基于LabVIEW的质谱与红外光谱信号采集系统  

Mass and infrared spectrum signal acquisition system based on LabVIEW

作　　者：余桂生 胡勇军 孙晓楠 YU Guisheng;HU Yongjun;SUN Xiaonan(College of Biophotonics,South China Normal University,Guangzhou 510631,China)

机构地区：[1]华南师范大学生物光子学研究院,广东广州510631

出　　处：《量子电子学报》2024年第1期26-36,共11页Chinese Journal of Quantum Electronics

基　　金：国家自然科学基金(22027808)。

摘　　要：针对实验室现有示波器存在集成性差、可扩展性不强等缺点,同时为了提高质谱信号采集效率和精度,设计了一套基于LabVIEW的质谱与红外光谱信号采集系统。该数据采集系统依托LabVIEW软件平台与CSE22G8数据采集卡,并结合叠加平均去噪算法,实现了低信噪比背景下微弱质谱信号的实时采集与处理。此外,通过TCP通信协议实现可调谐光学参量振荡器(OPO)的同步控制,使用户可以在采集质谱信号的同时获得相应的红外吸收光谱图。测试表明,该系统的分辨率较实验室原有示波器提高一倍,采样点数可达每微秒2000个,波形重构能力显著提升,具有较好的数据采集性能。To address the shortcomings of the existing oscilloscope in laboratory,such as poor integration and weak scalability,and to improve the efficiency and accuracy of mass spectrum signal acquisition,a LabVIEW-based signal acquisition and processing system for mass spectrometry and infrared spectrum is designed.Based on the LabVIEW software platform and CSE22G8 data acquisition card,the designed system can realize real-time acquisition and processing of weak mass spectrometry signals under the background with low signal-to-noise ratio using the superimposed average denoising algorithm.In addition,the synchronous control of tunable optical parametric oscillator(OPO)is realized through TCP communication protocol,so that the user can obtain the corresponding infrared absorption spectrum while collecting mass spectrum signals.Tests show that the resolution of the system is doubled compared with the original oscilloscope in laboratory,the number of sampling points can reach 2000 per microsecond,and the waveform reconstruction ability is significantly improved,indicating that the system has better data acquisition performance.

关 键 词：光谱学 数据采集系统 LABVIEW 叠加平均算法 质谱 

分 类 号：TH89[机械工程—仪器科学与技术]