基于LabWindows/CVI的实时频谱分析仪  

Real-time Spectrum Analyzer Based on LabWindows /CVI

作　　者：王鑫[1] 张惊雷[1] 

机构地区：[1]天津市复杂控制理论及应用重点实验室,天津理工大学自动化学院,天津300384

出　　处：《仪表技术与传感器》2014年第9期37-39,共3页Instrument Technique and Sensor

摘　　要：频谱分析仪在信号分析领域具有广泛的应用价值。采用虚拟仪器LabWindows/CVI软件平台开发了基于PCI-6221多功能数据采集卡的实时频谱分析仪。多线程技术用于开发数据采集、波形显示、滤波、频谱分析和数据库管理等模块。实验结果表明,设计实现的实时频谱分析仪基本达到通用示波器的性能指标,而且与传统仪器相比,开发成本低,使用灵活,人机界面更友好。Spectrum analyzer has a wide application in the field of signal analysis. A real - time spectrum analyzer based on data acquisition card （PCI- 6221 ） by using LabWindows/CVI virtual instrumentation platform was proposed. Multi -thread tech- nique was applied to develop the signal sampling program, the display of signals, the filter, analyzing the spectrum and database management. Testing result proves that the real - time spectrum analyst can satisfy the performance requirement of universal oscillo- scopes. Compared with the traditional spectrum analyzer, the design development costs low and the man - machine interface is more flexible and convenient.

关 键 词：LABWINDOWS/CVI 频谱分析 虚拟仪器 实时 信号分析 

分 类 号：TP311[自动化与计算机技术—计算机软件与理论] TP274[自动化与计算机技术—计算机科学与技术]