Method and apparatus for power management of asset tracking system
First Claim
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1. An apparatus for use in controlling the state of a power supply in a vehicle comprising:
- a vibration status input signal source for providing a vibration status signal;
a motion sensor for outputting a signal indicating in-transit status, the motion sensor being affected by the vibration status signal; and
a power controller responsive to the vibration status signal and the in-transit status signal, for selecting power consumption mode for the power supply.
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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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Citations
8 Claims
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1. An apparatus for use in controlling the state of a power supply in a vehicle comprising:
a vibration status input signal source for providing a vibration status signal;
a motion sensor for outputting a signal indicating in-transit status, the motion sensor being affected by the vibration status signal; and
a power controller responsive to the vibration status signal and the in-transit status signal, for selecting power consumption mode for the power supply. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
Specification