Sensor device for real-time monitoring or relative movement using capacitive fabric sensors
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United States of America Patent
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May 11, 2010
Grant Date -
Jan 3, 2008
app pub date -
Mar 2, 2007
filing date -
Mar 3, 2006
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A capacitive sensor device, including electrode materials carried by fabric substrates, is provided for monitoring relative movement of an expanding and/or contracting structure, such as the mammalian chest and/or torso, corresponding to a performance parameter related, for example, to respiratory function. Some embodiments include non-woven fabric substrates comprising compliant portions configured to stretch only in a selected direction and non-compliant portions upon which electrode materials are disposed. In some embodiments, layers of fabric substrates, carrying corresponding first and second electrode materials, are configured to cooperate to form a parallel plate capacitive sensor having a variable capacitance corresponding to a relative motion of the fabric substrates.
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