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Study: Wireless Sensors Limit Earthquake Damage

Posted April 20, 2007 5:05 PM

From University of Washington at St. Louis - News:

An earthquake engineer at Washington University in St. Louis has successfully performed the first test of wireless sensors in the simulated structural control of a model laboratory building. Shirley J. Dyke, Ph.D., the Edward C. Dicke Professor of Civil Engineering and director of the Washington University Structural Control and Earthquake Engineering Laboratory, combined the wireless sensors with special controls called magnetorheological dampers to limit damage from a simulated earthquake load. Her demonstration is the first step toward implementing wireless sensors for structural control in real buildings and structures, enabling less manpower requirements and far less remodeling of existing structures. "This (wireless) is where structural control technology is going," said Dyke. "If you put a wired system in a building, the cost can be prohibitive. Soon, wireless sensors will become even cheaper, making this a nice application. It will be much easier putting wireless sensors into a building compared with taking walls out and installing wires and cables."

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Guru

Join Date: Mar 2007
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#1

Re: Study: Wireless Sensors Limit Earthquake Damage

04/22/2007 4:17 AM

Much ado... In fact such sensors are already used in other applications. The problem is still the power supply. Such sensors can be either passive i.e. the vibration generates the signal without supply or have a supply either solar cells or batteries or energy harvester. The problem is still not the fact that a wireless sensing is used but how to have it working when needed. Any way the dampers (already used in other technologies) require a electric power supply. This must still be effective under earthquake conditions! Putting together sensors and dampers is good but it is not the end of the tunnel.

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