Apparatus and method for lost power detection

摘要

An apparatus and method for lost power detection are described. In one implementation, an apparatus for wirelessly transferring power includes an antenna configured to provide wireless power to a chargeable device sufficient to charge or power the chargeable device positioned within a charging region of the antenna. The apparatus further includes a receiver configured to receive from the chargeable device a measurement of a first amount of energy received by the chargeable device over a first period of time. The apparatus further includes a processor configured to measure a second amount of energy provided by the antenna over a second period of time, compare the first amount of energy to the second amount of energy, and determine whether another object is absorbing power provided via the antenna based at least in part on comparing the first amount and the second amount of energy.

主权项

1. An apparatus for wirelessly transferring power, the apparatus comprising:
an antenna configured to provide wireless power to a chargeable device sufficient to charge or power the chargeable device positioned within a charging region of the antenna; a receiver configured to receive from the chargeable device a measurement of a first amount of energy received by the chargeable device over a first period of time, wherein the first amount of energy is determined based upon an integral of an amount of power received by the chargeable device over the first period of time; and a processor configured to:
determine a second amount of energy provided by the antenna over a second period of time, based upon an integral of an amount of power provided by the antenna over a second period of time;compare the first amount of energy received from the chargeable device to the second amount of energy provided by the antenna over the second period; anddetermine whether an object other than the chargeable device is absorbing power provided via the antenna based at least in part on comparing the first amount and the second amount of energy.