基于泄漏声波信号的时域特征参数研究

摘要

The paper is the purposes of selecting characteristic parameters and improving the recognition rate, analysis the leakage acoustic signal in time domain with various methods for liquid pipeline to find out the characteristic parameters and the cause. The results showed that the root mean square value of the signal In-creases with pressure,and the margin sensitive the change of aperture diameter,they can be the characteristic parameters for the leakage acoustic signal.%以特征参数的选取和识别率的提高为目的，对液体管道泄漏信号进行多种方法的时域分析，找出泄漏信号在时域的特征参数，并分析其产生的原因。结果表明：泄漏声波信号的均方根值随管内压力的增大而增大；裕度参数对孔径的变化较为敏感，均可以作为研究泄漏孔径与管内压力变化的特征参数。