Input-protected structural health monitoring system
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United States of America Patent
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Dec 22, 2015
Grant Date -
Nov 17, 2011
app pub date -
May 17, 2010
filing date -
May 17, 2010
priority date (Note) -
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Abstract
A structural health monitoring (SHM) system that protects its active and passive components with filter circuits, instead of switches. The active module of the SHM system utilizes a high pass filter, and the passive module of the SHM system utilizes a low pass filter. The active module transmits its interrogating, or excitation, signals at relatively high frequencies that are filtered out by the low pass filter of the passive module, preventing the passive module from sustaining any damage due to the high voltage excitation signals. Meanwhile, the high frequency interrogating signals are passed to the active module's circuitry by its high pass filter, where they can be analyzed accordingly.
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