基于LabVIEW的FFT光纤涡轮流量测量系统研究  

Fiber Turbine Flow Measurement System with FFT Based on LabVIEW

作　　者：杜玉环[1] 郭迎清[1] 薛海东[1] 张小栋[2] 丁毅[3] 

机构地区：[1]西北工业大学动力与能源学院,陕西西安710072 [2]西安交通大学机械工程学院,陕西西安710049 [3]中航工业航空动力机械研究所,湖南株洲412002

出　　处：《仪表技术与传感器》2015年第11期56-58,104,共4页Instrument Technique and Sensor

摘　　要：光纤式涡轮流量计是一种应用前景广阔的流量测量装置。文中在分析光电频率信号处理方法的基础上,采用了FFT频谱分析法在LabVIEW软件中开发了仿真测试平台,通过仿真分析,验证了该方法在频率测量应用中具有抗干扰性强和高精度等优点;并进一步搭建了流量模拟测试系统进行实验,通过软硬件的结合,实验验证了该流量测试系统能够达到0.5%以上的测试精度。Fiber turbine flowmeter has broad prospects in flow measurement .Based on the analysis of methods about photoe-lectric frequency signal processing , the FFT spectrum analysis method was adopted in this paper .And then, a simulation testing system was developed in the LabVIEW .The method was proved with strong anti-interference and high accuracy in frequency meas-urement by simulation analysis .Further , the flow experiment system was built by combining hardware and software .By means of experiment , it has been verified the accuracy of the flow measurement system can reach higher than 0.5%.

关 键 词：涡轮流量计 光纤传感器 频率 FFT 

分 类 号：TP274[自动化与计算机技术—检测技术与自动化装置]