Method and apparatus for power management of asset tracking system
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United States of America Patent
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Jun 21, 2011
Grant Date -
Oct 11, 2007
app pub date -
Apr 11, 2006
filing date -
Apr 11, 2006
priority date (Note) -
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status (Latency Note)
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Abstract
A technique for controlling the state of a power supply in a mobile asset such as a cargo trailer. The technique detects motion status such as may be provided by a vibration sensor. The motion status signal is filtered by other signals, such as with inputs from a global positioning system sensor, and is then further used to select a power consumption mode. The power consumption mode may be further controlled based on configuration information that may indicate that a vibration source such as a refrigeration unit is present on the trailer.
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