標題: How Well Can We Extract the Permanent Displacement from Low-Cost MEMS Accelerometers?
作者: Jan, Jyh Cherng
Chao, Wei-An
Wu, Yih-Min
Chen, Chien-Chih
Lin, Cheng-Horng
土木工程學系
Department of Civil Engineering
關鍵字: low-cost MEMS accelerometers;earthquake permanent displacement;seismic hazard mitigation;P-Alert
公開日期: 1-Nov-2017
摘要: Following the recent establishment of a high-density seismic network equipped with low-cost micro-electro-mechanical system (MEMS) P-wave-alert-device (P-Alert) by the earthquake early warning (EEW) research group at the National Taiwan University, a large quantity of strong-motion records from moderate-magnitude earthquakes (M-L > 6) around Taiwan has been accumulated. Using a data preprocessing scheme to recover the dynamic average embedded within the P-Alert data, we adopted an automatic baseline correction approach for the P-Alert accelerograms to determine the coseismic deformation (Cd). Comparisons between the Cd values determined using global positioning system (GPS) data, strong-motion records from the P-Alert network, and data from the Taiwan Strong Motion Instrumentation Program (TSMIP) demonstrates that the near-real-time determination of Cd values (>2 cm), which provide crucial information for seismic hazard mitigation, is possible using records from low-cost MEMS accelerometers.
URI: http://dx.doi.org/10.3390/s17112643
http://hdl.handle.net/11536/144162
ISSN: 1424-8220
DOI: 10.3390/s17112643
期刊: SENSORS
Volume: 17
Issue: 11
起始頁: 0
結束頁: 0
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