Electrostatically actuated resonant switches for earthquake detection

Abdallah H. Ramini, Karim M. Masri, Mohammad I. Younis

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

The modeling and design of electrostatically actuated resonant switches (EARS) for earthquake and seismic applications are presented. The basic concepts are based on operating an electrically actuated resonator close to instability bands of frequency, where it is forced to collapse (pull-in) if operated within these bands. By careful tuning, the resonator can be made to enter the instability zone upon the detection of the earthquake signal, thereby pulling-in as a switch. Such a switching action can be functionalized for useful functionalities, such as shutting off gas pipelines in the case of earthquakes, or can be used to activate a network of sensors for seismic activity recording in health monitoring applications. By placing a resonator on a printed circuit board (PCB) of a natural frequency close to that of the earthquake's frequency, we show significant improvement on the detection limit of the EARS lowering it considerably to less than 60% of the EARS by itself without the PCB. © 2013 IEEE.
Original languageEnglish (US)
Title of host publication2013 9th International Symposium on Mechatronics and its Applications (ISMA)
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
ISBN (Print)9781467350167
DOIs
StatePublished - Apr 2013

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