钢丝绳损伤检测信号工频干扰滤波方法
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摘要
介绍了工频干扰产生的原因、干扰的抑制方法和钢丝绳损伤检测的原理。针对所研制的新一代电磁法钢丝绳损伤检测系统在钢丝绳损伤检测过程中出现的工频干扰,提出一种适合该系统的滤除工频干扰方法,试验结果表明:该方法对工频干扰的滤除针对性强,算法运算量小,仅通过迭代计算便可滤除工频干扰噪声,性能优于带阻滤波和自适应滤波方法。
The paper introduced the cause of the power frequency interference occurred,the interference restrained method and the steel cable damage detection principle.According to the power frequency interferences occurred during the steel cable damage detection process of the new electric magnetic method steel cable detection system developed,the paper proposed a power frequency interference elimination method suitable for the system.The test results showed that the method could be well in the filtration of the power frequency interferences and the algorithm of the method would be less in calculations.Only with the iterative calculation,the power frequency interference noises could be filtrated and the performance of the method could be better than the band stop filter and self suitable wave filtration method.
The paper introduced the cause of the power frequency interference occurred,the interference restrained method and the steel cable damage detection principle.According to the power frequency interferences occurred during the steel cable damage detection process of the new electric magnetic method steel cable detection system developed,the paper proposed a power frequency interference elimination method suitable for the system.The test results showed that the method could be well in the filtration of the power frequency interferences and the algorithm of the method would be less in calculations.Only with the iterative calculation,the power frequency interference noises could be filtrated and the performance of the method could be better than the band stop filter and self suitable wave filtration method.
引文
[1]周静.心电信号中工频干扰的消除[J].生物工程医学研究,2003,22(4):61-64.
[2]魏巍,刘学伟.基于独立分量分析的工频干扰消除技术[J].计算机应用研究,2009,26(1):227-229.
[3]陈天华,陈茜.一种消除心电信号噪声的数字滤波方法[J].世界科学技术:中医药现代化,2005,7(1):123-126.
[4]YU Chao,LI Gang,LIN Ling,et al.The Realization of Trac-king Power-line Interference Adaptive Coherent Model Based onPart FFT[J].Journal of Physics:Conference Series,2005(13):274-279.
[5]吴小培,詹长安,周荷琴,等.采用独立分量分析方法消除信号中的工频干扰[J].中国科学技术大学学报,2000,30(6):42-47.
[6]陈尚勤,李晓峰.快速自适应信息处理[M].北京:人民邮电出版社,1993.
[7]Dostinsky I A,Dadkalov I K.Accuracy of 50 Hz Interference Sub-straction from an Electrocardiogram[J].Medical and BiologicalEngineering and Computing,1996,34(3):489-494.
[8]胡博.基于偏相干分析法的工频干扰消除方法研究[D].哈尔滨:哈尔滨工程大学,2006.
[9]沈福民.自适应信号处理[M].西安:西安电子科技大学出版社,2001.
[10]钱晓进,郑如冰,王传林.高性能肌电检测前置放大器的设计[J].现代科学仪器,2003,19(3):50-52.
[11]罗福龙.地震勘探中的电磁干扰[J].石油仪器,2004,18(4):1-5,65.
[2]魏巍,刘学伟.基于独立分量分析的工频干扰消除技术[J].计算机应用研究,2009,26(1):227-229.
[3]陈天华,陈茜.一种消除心电信号噪声的数字滤波方法[J].世界科学技术:中医药现代化,2005,7(1):123-126.
[4]YU Chao,LI Gang,LIN Ling,et al.The Realization of Trac-king Power-line Interference Adaptive Coherent Model Based onPart FFT[J].Journal of Physics:Conference Series,2005(13):274-279.
[5]吴小培,詹长安,周荷琴,等.采用独立分量分析方法消除信号中的工频干扰[J].中国科学技术大学学报,2000,30(6):42-47.
[6]陈尚勤,李晓峰.快速自适应信息处理[M].北京:人民邮电出版社,1993.
[7]Dostinsky I A,Dadkalov I K.Accuracy of 50 Hz Interference Sub-straction from an Electrocardiogram[J].Medical and BiologicalEngineering and Computing,1996,34(3):489-494.
[8]胡博.基于偏相干分析法的工频干扰消除方法研究[D].哈尔滨:哈尔滨工程大学,2006.
[9]沈福民.自适应信号处理[M].西安:西安电子科技大学出版社,2001.
[10]钱晓进,郑如冰,王传林.高性能肌电检测前置放大器的设计[J].现代科学仪器,2003,19(3):50-52.
[11]罗福龙.地震勘探中的电磁干扰[J].石油仪器,2004,18(4):1-5,65.
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