管道漏磁检测中的信号处理  

SIGNAL PROCESSING FOR MAGNETIC FLUX LEAKAGE TESTING OF PIPELINES

作　　者：黄松岭[1] 李路明[1] 鲍晓宇[1] 刘国权 袁亚玎[1] 

机构地区：[1]清华大学,北京100084

出　　处：《无损检测》2000年第2期55-57,共3页Nondestructive Testing

摘　　要：针对管道漏磁检测信号的特点 ,采用软硬件相结合的方法 ,特别是采用独特的“程序滤波”方法处理检测信号 ,可有效地消除常规数字滤波无法消除的干扰。经实验验证 ,这些方法大大提高了检测信号的信噪比和装置的检测灵敏度 ,而且信号处理程序简单 ,满足实时检测的要求。In view of the signal characteristics in magnetic flux leakage testing of pipelines, signal processing methods combining software with hardware, especially the program filtering method, were used to eliminate efficiently the noises that can not be removed by traditional digital filtering methods. Experiments showed that the methods improved signal to noise ratio and testing sensitivity greatly, and met the requirement of real time testing because of the simplicity of the signal processing program.

关 键 词：漏磁检测 管道 信号处理 检测灵敏度 

分 类 号：U178[交通运输工程]