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%.
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