Secure Container System and Method
AssigneeThe Government of the United States of America, as represented by the Secretary of Homeland Security
InventorsJeffrey B. Barber, James Weatherall
Life of this patent
Estimating the term…
Abstract
Embodiments are directed toward a system and method relating to checking container status. For example, a system includes at least one antenna and a controller to receive radio frequency (RF) signals. The controller determines a first indication of RF signals received via the at least one antenna at a first time. The controller determines a second indication of RF signals received via the at least one antenna at a second time after the first time. The controller determines a difference between the first indication and the second indication, and compares the difference to a threshold. The controller indicates indicate a status change or no status change of the container responsive to the difference exceeding or falling below the threshold.
Claims20
A system to check a status of a container, comprising:
- at least one antenna;
- a controller coupled to the at least one antenna to receive radio frequency (RF) signals via the at least one antenna, the controller configured to:
- determine a first indication of RF signals received via the at least one antenna at a first time;
- determine a second indication of RF signals received via the at least one antenna at a second time after the first time;
- determine a difference between the first indication and the second indication;
- compare the difference to a threshold;
- indicate a status change of the container responsive to the difference exceeding the threshold;
- and
- indicate no status change of the container responsive to the difference falling below the threshold.
A method for monitoring a container, comprising:
- receiving, by a controller coupled to at least one antenna, radio frequency (RF) signals via the at least one antenna;
- determining a first indication of RF signals received via the at least one antenna at a first time;
- determining, by the controller, a second indication of RF signals received via the at least one antenna at a second time after the first time;
- determining, by the controller, a difference between the first indication and the second indication;
- comparing, by the controller, the difference to a threshold;
- indicating, by the controller, a status change of the container responsive to the difference exceeding the threshold;
- and
- indicating, by the controller, no status change of the container responsive to the difference falling below the threshold.
Dependencies are inferred from the claim text.