Massachusetts Institute of Technology

Shell Oil Comapny

James Long

William T Freeman

Frederic Durand

Neal Wadhwa

Oral Buyukozturk

Theodericus Johannes Henricus Smit

John William Fisher, Iii

Justin Gejune Chen

Hossein Mobahi

Sergio Daniel Kapusta

Zoran Dzunic

Reza Mohammadi Ghazi

Structural health monitoring (SHM) is essential but can be expensive to perform. In an embodiment, a method includes sensing vibrations at a plurality of locations of a structure by a plurality of time-synchronized sensors. The method further includes determining a first set of dependencies of all sensors of the time-synchronized sensors at a first sample time to any sensors of a second sample time, and determining a second set of dependencies of all sensors of the time-synchronized sensors at the second sample time to any sensors of a third sample time. The second sample time is later than the first sample time, and the third sample time is later than the second sample time. The method then determines whether the structure has changed if the first set of dependencies is different from the second set of dependencies. Therefore, automated SHM can ensure safety at a lower cost to building owners.

Motion sensing wi-fi sensor networks for continuous 3D modeling and prediction of facility responses to disturbances

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Cambridge, MA, United States of America

James Long