How well can we extract the permanent displacement from low-cost MEMS accelerometers?

Jyh Cherng Jan, Wei An Chao, Yih Min Wu, Chien Chih Chen, Cheng Horng Lin

Research output: Contribution to journalArticlepeer-review

10 Scopus citations


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 (ML > 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.

Original languageEnglish
Article number2643
JournalSensors (Switzerland)
Issue number11
StatePublished - 16 Nov 2017


  • Earthquake permanent displacement
  • Low-cost MEMS accelerometers
  • P-Alert
  • Seismic hazard mitigation


Dive into the research topics of 'How well can we extract the permanent displacement from low-cost MEMS accelerometers?'. Together they form a unique fingerprint.

Cite this