基于递推DFT算法的涡街流量计信号处理系统  

The Signal Processing System of Vortex Flowmeter Based on Recursive DFT Algorithm

作　　者：于希宁[1] 袁素梅[1] 田亮[1] 

机构地区：[1]华北电力大学

出　　处：《中国仪器仪表》2009年第3期76-79,共4页China Instrumentation

摘　　要：介绍以LPC2103为处理器的涡街流量计信号处理系统。系统采用递推DFT算法对涡街流量计中传感器的信号进行数字处理,实现对涡街信号频率的准确提取。该系统体积小、成本低、抗干扰能力强,保证工业现场的测量精度和信号处理的实时性。A signal processing system of vortex flowmeter based on LPC2103 is presented in this paper. The sensor＇ s signals in flowmeter are processed by means of the recursive Discrete Fourier Transform （DFT） algorithm method. The real frequency of signal is calculated. The proposed system features small size, low cost, high anti-interference capability, ensure that it processes signals in real time and measure signals accurately in the industry field.

关 键 词：涡街流量计 递推DFT 信号处理 LPC2103 

分 类 号：TH814[机械工程—仪器科学与技术]