Force and deflection sensor with shell membrane and optical gratings and method of manufacture
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United States of America Patent
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Mar 8, 2011
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N/A
app pub date -
Apr 10, 2008
filing date -
Apr 10, 2008
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Abstract
A sensor for force is formed from an elastomeric cylinder having a region with apertures. The apertures have passageways formed between them, and an optical fiber is introduced into these passageways, where the optical fiber has a grating for measurement of tension positioned in the passageways between apertures. Optionally, a temperature measurement sensor is placed in or around the elastomer for temperature correction, and if required, a copper film may be deposited in the elastomer for reduced sensitivity to spot temperature variations in the elastomer near the sensors.
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