Development of Accurate Small Vibrator and Wireless Accelerometers
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Bibliographic Details
| Author(s): |
Takafumi Okumura
Takahiro Ohtani Mika Tsukahara Masayuki Saeki |
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| Medium: | conference paper | ||||
| Language(s): | English | ||||
| Conference: | IABSE Conference: Elegance in structures, Nara, Japan, 13-15 May 2015 | ||||
| Published in: | IABSE Conference Nara 2015 | ||||
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| Page(s): | 306-307 | ||||
| Total no. of pages: | 8 | ||||
| Year: | 2015 | ||||
| DOI: | 10.2749/222137815815775123 | ||||
| Abstract: |
The authors have been developing a vibration based structural sensing system with the accurate small vibrator and wireless accelerometers. In this study, we investigate the effects of various systematic errors of the proposed system on the estimation of vibration characteristics. Sampling delay time of wireless accelerometers is measured and the averaged delay time and the standard deviations are estimated. The correction method of initial phase error of the accurate small vibrator is presented. We also conduct a laboratory scale vibration test using a two-meter steel beam. The mode shape is accurately estimated using the proposed system. |
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| Keywords: |
structural health monitoring wireless sensor network accurate small vibrator
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