基于虚拟仪器技术的结构健康监测系统开发
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摘要
基于虚拟仪器技术建立了一套结构健康监测系统,介绍了各子系统的功能、特点和实现方法。建立了基于LabVIEW平台的数据采集系统,实现了光纤光栅传感器与传统电力式传感器的同时测量,通过LabVIEW和MATLAB混合编程实现了小波消噪和结构的损伤诊断,研究了LabVIEW与SQL Server 2000相结合的数据库开发技术。以一个二层的钢框架结构为例对系统进行了测试,结果表明系统运行稳定,损伤识别准确有效。
A structure health monitoring system based on virtual instrument technology was developed.All the subsystems were analyzed in their functions, characteristics and implementations.A data acquisition system based on the platform of LabVIEW was developed to acquire the signals of optic fiber Bragg grating sensors and traditional electrical sensors synchronously.Through mixed programming of LabVIEW and MATLAB, the powerful wavelet toolbox of MATLAB was used for noise reduction and damage diagnosis.The database development technique based on LabVIEW and SQL Server 2000 was introduced.The stabilization of the system and the effectiveness of the damage diagnosis method were confirmed on a two-story steel frame.
A structure health monitoring system based on virtual instrument technology was developed.All the subsystems were analyzed in their functions, characteristics and implementations.A data acquisition system based on the platform of LabVIEW was developed to acquire the signals of optic fiber Bragg grating sensors and traditional electrical sensors synchronously.Through mixed programming of LabVIEW and MATLAB, the powerful wavelet toolbox of MATLAB was used for noise reduction and damage diagnosis.The database development technique based on LabVIEW and SQL Server 2000 was introduced.The stabilization of the system and the effectiveness of the damage diagnosis method were confirmed on a two-story steel frame.
引文
[1]李宏男,李东升.土木工程结构安全性评估、健康监测及诊断述评[J].地震工程与工程振动,2002,22(3):82-90.
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[3]杨乐平,李海涛,赵勇,等.LabVIEW高级程序设计[M].北京:清华大学出版社,2003:160-162.
[4]李宏男.结构健康监测[M].大连:大连理工大学出版社,2004:246-248.
[5]焦莉,李宏男.基于数据融合和小波分析的结构损伤诊断[J].振动与冲击,2006,26(5):85-194.
[6]Hou Z,Noori M.Wavelet-based approach for ASCE structural health monitoring benchmark studies[C]//Proceedings of the3rd International Workshop on Structural Health Monitoring.Boca Raton,USA:CRC Press,2001:CD Version.
[7]Hou Z,Hera A.Progress of Phase II Study of The ASCE health monitoring benchmark data using wavelet approach[C]//Ling HI eds.Proceedings of the15th ASCE Engineering Mechanics Conference.Boca Raton,USA:CRC Press,2002:CD Version.
[8]Hera A,Hou Z.Application of wavelet approach for ASCE structural health monitoring benchmark studies[J].Journal of Engineering Mechanics(S0733-9399),2004,130(1):96-104.
[9]郭健,孙炳楠.基于小波变换的桥梁健康监测多尺度分析[J].浙江大学学报(工学版),2005,39(1):114-118.
[2]胡昌华,张军波,夏军,等.基于MATLAB的系统分析与设计—小波分析[M].西安:西安电子科技大学出版社,1999:4-5.
[3]杨乐平,李海涛,赵勇,等.LabVIEW高级程序设计[M].北京:清华大学出版社,2003:160-162.
[4]李宏男.结构健康监测[M].大连:大连理工大学出版社,2004:246-248.
[5]焦莉,李宏男.基于数据融合和小波分析的结构损伤诊断[J].振动与冲击,2006,26(5):85-194.
[6]Hou Z,Noori M.Wavelet-based approach for ASCE structural health monitoring benchmark studies[C]//Proceedings of the3rd International Workshop on Structural Health Monitoring.Boca Raton,USA:CRC Press,2001:CD Version.
[7]Hou Z,Hera A.Progress of Phase II Study of The ASCE health monitoring benchmark data using wavelet approach[C]//Ling HI eds.Proceedings of the15th ASCE Engineering Mechanics Conference.Boca Raton,USA:CRC Press,2002:CD Version.
[8]Hera A,Hou Z.Application of wavelet approach for ASCE structural health monitoring benchmark studies[J].Journal of Engineering Mechanics(S0733-9399),2004,130(1):96-104.
[9]郭健,孙炳楠.基于小波变换的桥梁健康监测多尺度分析[J].浙江大学学报(工学版),2005,39(1):114-118.
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