基于LabVIEW的频谱分析系统研究

发布时间：2018-05-13 17:50

本文选题：虚拟仪器 + LabVIEW　；参考：《长春理工大学》2014年硕士论文

【摘要】：频谱分析研究现在会应用到很多的科研技术范围中,比如无线电技术里面的电子通讯系统、地震检测应用系统、地质勘测应用技术、电子信息应用系统、搜寻救援应用系统、导航应用技术、安检应用系统、雷达检测应用系统等,不但如此,由于像光波、冲击、声响还有很多非电量科学应用技术都是能够利用能量转换器件转为电流、电压值方面所产生的改变从而更有利、更直接地研究测量分析,因此频谱分析在噪声、生物、发动机、各种振动、医学等方面也同样有着至关重要的地位。本文是基于服务于PXI系统的3U四核嵌入式控制器—PXI8110嵌入式控制器采集卡为平台,采用LabVIEW图形化编程语言为开发研究测量工具,结合信号处理的理论思想对信号进行时域方面,频域方面的研究测试分析处理。通过用LabVIEW设计编程一个虚拟的信号发生器获得信号源。在信号频域分析模块,主要研究完成了信号的幅相谱分析、功率谱分析、谐波分析、倒频谱分析、联合时频分析等,并且研究分析了部分信号时域分析方面的具体功能从而更进一步地掌握信号的结构组成和特性参数。人机交互界面的具体研究分析设计可使用户进行简单容易的参数选取,信号分析,输出结果等方面的功能操作。
[Abstract]:Spectrum analysis and research will now be applied to many scientific research technologies, such as electronic communication systems in radio technology, seismic detection applications, geological survey applications, electronic information applications, search and rescue applications. Navigation application technology, security application system, radar detection application system, and so on, not only so, because of light wave, shock, sound, and many other scientific applications of non-electric energy, they can use energy conversion devices to convert electric current. The changes in voltage are more beneficial and more direct in the study of measurement and analysis, so spectrum analysis also plays an important role in noise, biology, engine, vibration, medicine and so on. This paper is based on the 3U four-core embedded controller PXI8110 embedded controller data acquisition card which serves the PXI system, adopts the LabVIEW graphic programming language as the development and measurement tool, and carries on the signal time domain aspect with the signal processing theory thought. Frequency domain research, test analysis and processing. The signal source is obtained by programming a virtual signal generator with LabVIEW. In the signal frequency domain analysis module, the signal amplitude and phase spectrum analysis, power spectrum analysis, harmonic analysis, cepstrum analysis, joint time-frequency analysis, etc. The specific functions of time domain analysis of some signals are studied and the structure and characteristic parameters of the signals are further grasped. The concrete research and analysis design of the man-machine interface can make the user carry on the simple and easy parameter selection, the signal analysis, the output result and so on the function operation.
【学位授予单位】：长春理工大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM935.21

【引证文献】