Automotive weight sensor for occupant classification system
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United States of America Patent
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Oct 6, 2009
Grant Date -
Sep 28, 2006
app pub date -
Mar 24, 2006
filing date -
Mar 24, 2005
priority date (Note) -
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Abstract
An occupant weight sensing system includes a loading rod, which replaces a seat height adjuster pivot bolt and extends away from a seat height adjuster link. A sensing element is mounted at the opposing end of the loading rod. When force is applied the loading rod acts as a cantilever to transfer radial force to the sensing element. A plurality of strain gages are arranged down the center of the sensing element to provide a measurement of strain on the sensing element. The loading rod flexes to transfer any excessive force to a seat bracket. The sensing element has a low sensitivity to axial forces to avoid requiring additional mechanical components to protect the sensing element.
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