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: | 1-十一月-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 |
顯示於類別: | 期刊論文 |