A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
A Comparative Study of EMD and EEMD Methods for Detrending Signals Collected by Smartphone Accelerometers
https://orcid.org/https://orcid.org/0009-0005-6132-3684
https://orcid.org/https://orcid.org/0000-0002-2588-2850
https://orcid.org/https://orcid.org/0009-0004-1355-5643
https://orcid.org/https://orcid.org/0000-0001-9805-1428
https://orcid.org/https://orcid.org/0009-0006-6128-0618
https://orcid.org/https://orcid.org/0009-0000-3591-4011
https://orcid.org/https://orcid.org/0009-0005-7413-4532
Smartphones, as a new tool for structural health monitoring, require further validation of the signal accuracy collected by their built-in accelerometers and the effectiveness of signal preprocessing methods. This paper presented a shaking table test on a scaled model of a five-story single-bay hybrid structure composed of wooden modules and a reinforced concrete frame. To address the issue of baseline drift in the integrated acceleration signals collected by smartphone accelerometers, the feasibility of the methods was demonstrated by comparing the detrending effects and signal characteristics of time-history curves processed by EMD and EEMD. The test results showed that the signals processed by the EEMD method were richer than those processed by the EMD method. On the basis of removing the trend term of the original signal, the EEMD method effectively reconstructed and preserved the signal characteristics of the velocity time-history curve, making it more suitable as a preprocessing method for the integrated acceleration signals measured by smartphone accelerometers.
A Comparative Study of EMD and EEMD Methods for Detrending Signals Collected by Smartphone Accelerometers
https://orcid.org/https://orcid.org/0009-0005-6132-3684
https://orcid.org/https://orcid.org/0000-0002-2588-2850
https://orcid.org/https://orcid.org/0009-0004-1355-5643
https://orcid.org/https://orcid.org/0000-0001-9805-1428
https://orcid.org/https://orcid.org/0009-0006-6128-0618
https://orcid.org/https://orcid.org/0009-0000-3591-4011
https://orcid.org/https://orcid.org/0009-0005-7413-4532
Smartphones, as a new tool for structural health monitoring, require further validation of the signal accuracy collected by their built-in accelerometers and the effectiveness of signal preprocessing methods. This paper presented a shaking table test on a scaled model of a five-story single-bay hybrid structure composed of wooden modules and a reinforced concrete frame. To address the issue of baseline drift in the integrated acceleration signals collected by smartphone accelerometers, the feasibility of the methods was demonstrated by comparing the detrending effects and signal characteristics of time-history curves processed by EMD and EEMD. The test results showed that the signals processed by the EEMD method were richer than those processed by the EMD method. On the basis of removing the trend term of the original signal, the EEMD method effectively reconstructed and preserved the signal characteristics of the velocity time-history curve, making it more suitable as a preprocessing method for the integrated acceleration signals measured by smartphone accelerometers.
A Comparative Study of EMD and EEMD Methods for Detrending Signals Collected by Smartphone Accelerometers
https://orcid.org/https://orcid.org/0009-0005-6132-3684
https://orcid.org/https://orcid.org/0000-0002-2588-2850
https://orcid.org/https://orcid.org/0009-0004-1355-5643
https://orcid.org/https://orcid.org/0000-0001-9805-1428
https://orcid.org/https://orcid.org/0009-0006-6128-0618
https://orcid.org/https://orcid.org/0009-0000-3591-4011
https://orcid.org/https://orcid.org/0009-0005-7413-4532
Smartphones, as a new tool for structural health monitoring, require further validation of the signal accuracy collected by their built-in accelerometers and the effectiveness of signal preprocessing methods. This paper presented a shaking table test on a scaled model of a five-story single-bay hybrid structure composed of wooden modules and a reinforced concrete frame. To address the issue of baseline drift in the integrated acceleration signals collected by smartphone accelerometers, the feasibility of the methods was demonstrated by comparing the detrending effects and signal characteristics of time-history curves processed by EMD and EEMD. The test results showed that the signals processed by the EEMD method were richer than those processed by the EMD method. On the basis of removing the trend term of the original signal, the EEMD method effectively reconstructed and preserved the signal characteristics of the velocity time-history curve, making it more suitable as a preprocessing method for the integrated acceleration signals measured by smartphone accelerometers.
A Comparative Study of EMD and EEMD Methods for Detrending Signals Collected by Smartphone Accelerometers
Lecture Notes in Civil Engineering
Vatin, Nikolai (editor) / Roschina, Svetlana (editor) / Dixit, Saurav (editor) / Liu, Yingxin (author) / Xu, Yun (author) / Du, Mingli (author) / Chernykh, Aleksandr (author) / Zhang, Zhonghua (author) / Song, Chunbo (author) / Shi, Saisai (author)
International Conference on Materials Physics, Building Structures & Technologies in Construction, Industrial and Production Engineering – MPCPE ; 2024 ; Vladimir, Russia
2024-12-28
8 pages
Article/Chapter (Book)
Electronic Resource
English
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