Wireless vibrating strain gauge for smart civil structures
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United States of America Patent
Stats
-
Sep 22, 2009
Grant Date -
Nov 16, 2006
app pub date -
May 10, 2006
filing date -
May 10, 2005
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A gauge includes a wire, a housing, a coil, a processor, and a power supply. The wire is mounted in the housing to vibrate at a natural frequency. The coil is magnetically coupled to the wire. The processor is connected to provide a digital signal to the coil and the processor is further connected to detect when the wire is vibrating. An embodiment provides an efficient technique to excite the wire into vibration. Another embodiment enables long term operation from a small battery. Another embodiment enables wireless communications to be used, eliminating the need for cable runs.
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