MONITORING DEVICE AND METHOD FOR MONITORING THE STATUS OF A CARGO CONTAINER
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United States of America Patent
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Issued Date -
Dec 3, 2009
app pub date -
May 3, 2007
filing date -
May 30, 2006
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A monitoring device (10) attached to a cargo container, the monitoring device comprising a timer (28), a barometer (26), a controller (30), a positioning module (24) and a wireless communication module (32, 34, 36). The barometer (26) provides barometric pressure measurements at predetermined time intervals over a predetermined time window determined by the timer (28). The controller (30) processes the timed pressure measurements into a lift profile and then applies an algorithm to the lift profile to determine whether the cargo container has been loaded or unloaded onto or from a means of transport.
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