Piezocable based sensor for measuring unsteady pressures inside a pipe
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United States of America Patent
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May 6, 2008
Grant Date -
Oct 13, 2005
app pub date -
Mar 23, 2005
filing date -
Mar 23, 2004
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A piezocable-based sensor for measuring unsteady pressures inside a pipe comprises at least one cable extending around at least a portion of a circumference of the pipe. The cable includes a first electrical conductor, a piezoelectric material disposed around the first electrical conductor, and a second electrical conductor disposed around the piezoelectric material. The sensor provides a signal indicative of unsteady pressure within the pipe in response to displacement of the pipe. In various embodiments, a band is wrapped around the at least one cable for compressing the at least one cable toward the pipe. In other embodiments, the sensor includes a clamp attached to opposing ends of the at least one cable for holding the at least one cable in tension around the pipe.
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