| 用二重互相关算法扩展涡街流量计测量下限 |
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| 引用本文： | 李小京.用二重互相关算法扩展涡街流量计测量下限[J].传感器与微系统,2008,27(1):25-26,29. |
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| 作者姓名： | 李小京 |
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| 作者单位： | 天津工业大学计算中心,天津,300160 |
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| 基金项目： | 天津市科技创新专项基金 |
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| 摘 要： | 介绍了采用二重互相关算法对强噪声干扰下的涡街信号进行滤波的原理和具体实现方法。对涡街流量计在测量下限时的信号与噪声情况进行了分析,将二次互相关滤波算法引入涡街信号的数字滤波过程中。给出了具体计算方法和各主要参数的取值规则。在实际使用中取得了良好的效果。
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| 关 键 词： | 涡街流量计 互相关函数 数字滤波 |
| 文章编号： | 1000-9787（2008）01-0025-02 |
| 收稿时间： | 2007-05-22 |
| 修稿时间： | 2007年5月22日 |
Extending measured value of vortex flowmeter at lower velocity by using quadratic cross correlation algorthm |
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| LI Xiao-jing.Extending measured value of vortex flowmeter at lower velocity by using quadratic cross correlation algorthm[J].Transducer and Microsystem Technology,2008,27(1):25-26,29. |
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| Authors: | LI Xiao-jing |
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| Abstract: | The filter principle and the implement method of vortex flowmeter signals with serious noises are introduced by using quadratic cross correlation algorithm. The signal and noise conditions of vortex flowmeter at the lower velocity are analyzied, and quadratic cross correlation algorithm is applied to digital filterine. The specific computation method and the rule of choosing a value to several major parameters are given. The good results are achieved in practical application. |
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| Keywords: | vortex flowmeter cross correlation function digital filtering |
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