互相关算法在涡街流量信号处理中的应用  

Application on cross correlation algorithm in signal processing of vortex flowmeter

作　　者：龚清湄[1] 王萍[2] 

机构地区：[1]福建泉州黎明职业大学计算机与信息工程系,泉州362000 [2]天津工业大学电气工程与自动化学院,天津300160

出　　处：《天津工程师范学院学报》2009年第4期43-45,共3页Journal of Tianji University of Technology and Education

基　　金：天津市科技创新专项资金资助项目(06FZZDGX00800)

摘　　要：简述了数字滤波器和互相关滤波两种涡街流量计数字信号处理的设计方法,利用VB.NET编制了相应滤波算法的程序,并作了性能分析和比较。结果表明,将二次互相关滤波算法引入涡街信号的数字滤波过程中,改善了涡街流量计测量下限受限的情况。Two methods applied in digital signal processing for vortex flowmeter signal are introduced,which are FIR,IIR digital filtering,correlation filtering.And then these filtering algorithms are implemented by Visual Basic.NET.Finally their performances are analyzed and compared.The results indicate that the introduction of the second cross-correlation filtering algorithm vortex signal digital filtering process,the lower limit of vortex flowmeter measurement of limited problems can be improved.

关 键 词：涡街流量计 互相关函数 数字滤波 VB.NET 

分 类 号：TP216[自动化与计算机技术—检测技术与自动化装置]