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Seismic detection with MEMS embedded in smartphones

Seismic detection with MEMS embedded in smartphones

Accordinga new study published in the October issue of Bulletinof the Seismological Society of America(BSSA), a small chip used insmartphones to adjust screen orientationcould be used to create an urban seismic network in real time,easily increasing the amount of strong movement datacollected during a major earthquake.

Accelerometers of microelectromechanical systems (MEMS)
measure the acceleration velocity of ground motion and the
vibration of cars, buildings and facilities.

Antonino D’Alessandro and Giuseppe D’Anna, both seismologists from the
Istituto Nazionale di Geosifica e Vulcanologia of Italy, verified
if cheap MEMS accelerometers could detect
Reliable and accurate ground movement caused by earthquakes.
They tested the MEMS LIS331DLH accelerometer installed in the phone
iPhone and compared them with the balance accelerometer of
Episensor ES-T earthquake sensor force produced by
Kinemetrics.

Evidence suggests that MEMS accelerometers can
detect earthquakes of moderate to strong intensity (greater than
5) when they are located near the epicenter. The device produces
enough noise to avoid accurate earthquake detection
minors, a limitation for use in motion control
strong.

However,
D’Alessandro and D’Anna point out that technology is evolving
quickly and that soon there will be MEMS sensors sensitive to
earthquakes with magnitudes less than 5. The real advantage, according to
authors, is the widespread use of mobile phones and
notebook computers that include MEMS technology, so
it will be possible to dramatically increase coverage when
produce earthquakes of great intensity.



Video: The World Of Microscopic Machines (May 2021).