量子电子学报, 2003, 20 (6): 671, 网络出版: 2006-05-15
数字滤波技术在气相紫外光电子能谱仪数据采集中的应用
Application of Digital Filter in Data Acquisition System for Gas Phase Ultraviolet Photoelectron Spectrometer
光电子能谱仪 数字滤波 数据采集(A/D)卡 信噪比 photoelectron spectroscopy digital filter data acquisition card （A/D） signal-noise- ratio
摘要
为既能广泛用于稳定分子的研究又能用于瞬变物种研究的气相紫外光电子能谱仪设计了数据采集系统,应用Windows支持下的Visual C++6.0编程技术,编制了具有友好界面、操作简便的数据采集系统软件.数据采集系统利用Butterworth低通数字滤波器对采集到的数据进行处理,来消除高频的噪声提高信噪比.
Abstract
The HeI photoelectron spectroscopy is used not only in reseaching steady molecule but also in reseaching transient species. The system consists of a A/D card and a software to make the card to work. The system converts the analog signal (from the detector) to digital signal and processes the data in the computer. The method of designing Butterworth digital low pass filter is inteoduced in this paper. The digital low pass filter in the system improves signal-to-noise ratio.
阚瑞峰, 车会娟, 李益民, 李海洋, 王殿勋. 数字滤波技术在气相紫外光电子能谱仪数据采集中的应用[J]. 量子电子学报, 2003, 20(6): 671. 阚瑞峰, 车会娟, 李益民, 李海洋, 王殿勋. Application of Digital Filter in Data Acquisition System for Gas Phase Ultraviolet Photoelectron Spectrometer[J]. Chinese Journal of Quantum Electronics, 2003, 20(6): 671.
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