Motion sensing for tire pressure monitoring
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United States of America Patent
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-
May 9, 2006
Grant Date -
Oct 20, 2005
app pub date -
Apr 19, 2004
filing date -
Apr 19, 2004
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A motion sensor system for a tire pressure monitoring system (TPMS) that uses a piezoelectric sensor to sense vibration as an indication of wheel motion. The TPMS uses the detected vibration to transition between operation modes. In one embodiment, the TPMS has a motion mode and a park mode, wherein the TPMS has increased activity (e.g. sampling tire pressure at a higher rate and transmitting tire pressure at a higher rate) during the motion mode than in the park mode.
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