数字锁相放大技术在场指纹法中的应用
Application of Digital Lock-in Amplifier Technique to Field Signature Method
摘 要
针对传统场指纹法(FSM)系统的直流激励电流的幅值较大的问题,提出了将锁相放大技术应用到FSM中以减小激励电流的方法.通过试验对比了传统FSM激励电流和采用锁相放大技术的激励电流的幅值.结果表明,在满足测量精度的前提下,锁相放大技术可以大幅度减小FSM的激流电流,系统能对管道内部腐蚀情况进行高效、可靠的在线监测.
腐蚀监测
数字锁相
微弱信号
field signature method (FSM)
corrosion monitoring
digital phase-lock
weak signal
Abstract
To overcome the problem that the amplitude of excitation direct current (DC) is too large in traditional field signature method (FSM),a method for aspplication of digital lock-in amplifier technique to FSM was proposed.The results showed that digital lock-in amplifier technique could significantly reduce the amplitude of excitation current under the premise of meeting the measurement accuracy in comparison with traditional FSM excitation current,the system could provide efficient and reliable on-line monitoring and evaluation of the inner corrosion of pipelines.
中图分类号 TG174 DOI 10.11973/fsyfh-201507013
所属栏目 应用技术
基金项目 国家自然科学基金(61271329);四川省科技支撑计划(2012GZ0094)
收稿日期 2014/7/28
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备注廖俊必(1953-),教授,博士生导师,从事测控技术研究.
引用该论文: HUANG Yu-yu,GAN Fang-ji,LIAO Jun-bi. Application of Digital Lock-in Amplifier Technique to Field Signature Method[J]. Corrosion & Protection, 2015, 36(7): 659
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参考文献
【1】王疆戈.管道现状[J].中国石化,2004,226(7):18-19.
【2】张炜强,秦立高,李飞.腐蚀监测/检测技术[J].腐蚀科学与防护技术,2009,21(5):477-479.
【3】李永年.国内外埋地管道腐蚀状况物理检测技术现状[J].岩土工程界,2000,3(9):43-45.
【4】胡涛,朱本智,闫化云,等.FSM技术对海底管道中缓蚀剂应用效果的评价[J].腐蚀与防护,2011,32(3):236-238.
【5】HOGNESTAD H.A method and a device for monitoring large metal structures[P].WIPO,1983-10-28．
【6】DAALAND A.Modelling of weld corrosion attacks on a pipe geometry for developing an interpretation model from FSM signals[J].Insight,1996,38(6):435-439.
【7】WAN Z,LIAO J,TIAO G Y,et al.Investigation of drag effect using the field signature method[J].Measurement Science and Technology,2011,22(8):085708.
【8】CLARIDA D R,BOOTHMAN R M,SCANLAN R J.Corrosion monitoring experience in the refining industry using FSM technique[J].Corrosion,2003,46(2):341-346.
【9】DAALAND A.Modelling of local corrosion attacks on a plate geometry for developing the FSM technology[J].Insight,1996,38(12):872-875.
【10】甘芳吉,万正军,罗航,等.基于场指纹法的金属管道小腐蚀坑的监测方法[J].仪器仪表学报,2013,34(9):2087-2094.
【11】万正军,廖俊必,王裕康,等.基于电位列阵的金属管道坑蚀监测研究[J].仪器仪表学报,2011,32(1):19-25.
【12】Whalen.Detection of signal in noise[M].New York:Academic Press,1992:32-36.
【13】蔡屹.基于双相锁相放大器的微弱信号矢量测量[J].微计算机信息,2007(25):111-112.
【14】吴晓爽.基于FPGA的数字锁相检测系统[D].天津:天津大学硕士学位论文,2010.
【15】GIUSEPPE SPOSITO.Advances in potential drop techniques for non-destructive testing[D].London:Imperial College,2009:82-84.
【16】SR850 DSP Lock-in AmplifierStanford research system,1998-1999 scientific and engineering instrument[P].
【2】张炜强,秦立高,李飞.腐蚀监测/检测技术[J].腐蚀科学与防护技术,2009,21(5):477-479.
【3】李永年.国内外埋地管道腐蚀状况物理检测技术现状[J].岩土工程界,2000,3(9):43-45.
【4】胡涛,朱本智,闫化云,等.FSM技术对海底管道中缓蚀剂应用效果的评价[J].腐蚀与防护,2011,32(3):236-238.
【5】HOGNESTAD H.A method and a device for monitoring large metal structures[P].WIPO,1983-10-28．
【6】DAALAND A.Modelling of weld corrosion attacks on a pipe geometry for developing an interpretation model from FSM signals[J].Insight,1996,38(6):435-439.
【7】WAN Z,LIAO J,TIAO G Y,et al.Investigation of drag effect using the field signature method[J].Measurement Science and Technology,2011,22(8):085708.
【8】CLARIDA D R,BOOTHMAN R M,SCANLAN R J.Corrosion monitoring experience in the refining industry using FSM technique[J].Corrosion,2003,46(2):341-346.
【9】DAALAND A.Modelling of local corrosion attacks on a plate geometry for developing the FSM technology[J].Insight,1996,38(12):872-875.
【10】甘芳吉,万正军,罗航,等.基于场指纹法的金属管道小腐蚀坑的监测方法[J].仪器仪表学报,2013,34(9):2087-2094.
【11】万正军,廖俊必,王裕康,等.基于电位列阵的金属管道坑蚀监测研究[J].仪器仪表学报,2011,32(1):19-25.
【12】Whalen.Detection of signal in noise[M].New York:Academic Press,1992:32-36.
【13】蔡屹.基于双相锁相放大器的微弱信号矢量测量[J].微计算机信息,2007(25):111-112.
【14】吴晓爽.基于FPGA的数字锁相检测系统[D].天津:天津大学硕士学位论文,2010.
【15】GIUSEPPE SPOSITO.Advances in potential drop techniques for non-destructive testing[D].London:Imperial College,2009:82-84.
【16】SR850 DSP Lock-in AmplifierStanford research system,1998-1999 scientific and engineering instrument[P].
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