涡街流量信号中管道振动噪声的分析与处理

Analysis and Processing of Pipeline Vibration Noise in Vortex Flow Signals

研究了获取管道振动噪声干扰特征的方法,介绍了基于加速度传感器的管道振动信号的采集.结合涡街流量信号和管道振动信号的频谱分析结果,指出了管道振动信号频率与涡街流量信号的主要干扰分量频率直接相关.研究表明,可通过获取管道振动加速度信号特征,来间接获得涡街流量信号中最主要噪声的频率特征.基于这一研究结论,以管道振动信号的特征信息为参考输入,验证了通过自适应滤波对涡街流量信号中振动噪声的滤波方法.

A method of acquiring pipeline vibration noise is studied, and sampling of pipeline vibration signals using an acceleration sensor introduced. Based on frequency analysis of vortex signal and pipeline vibration signal, frequency of pipeline vibration signals is directly correlated with the frequency of main noise component. The frequency characteristics of main noise in vortex signal can be obtained indirectly by acquiring the pipeline vibration acceleration signal. Implementation of vortex signal filtering using a self-adaptation filter with the characteristics of pipeline vibration signal as input is verified.