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A new optical sensor developed by scientists and engineers at Lawrence Berkeley National Laboratory (Berkeley Lab), Lawrence Livermore National Laboratory, and the University of Nevada-Reno could reduce the time needed to reliably evaluate whether critical buildings, such as hospitals and schools, are safe to reoccupy after an earthquake. The Discrete Diode Position Sensor (DDPS) uses a laser source and a position-sensitive detector to measure interstory drift within buildings quickly and accurately.
A new sensor developed at Lawrence Berkeley National Laboratory combines laser beams with a position-sensitive detector to directly measure drift between building stories, an essential part of assessing earthquake damages in buildings…READ MORE