Systems and methods for determining when to wirelessly transmit power to a location within a transmission field based on predicted specific absorption rate values at the location

A non-transitory computer-readable storage medium storing executable instructions that, when executed by a transmitter configured to monitor specific absorption rate (SAR) values to determine when to wirelessly transmit power to a receiver, cause the transmitter to:

• receive, at a wireless-power transmission device, an indication from a receiver responsive to wirelessly delivered RF power, the receiver being present at a location within a transmission field of the wireless-power transmission device;
• in response to receiving the indication, determine transmission characteristics to use for transmitting radio frequency power transmission signals to the receiver;
• determine, using stored SAR value determination criteria and one or more of the transmission characteristics, a predicted SAR value that would be present at the location after the radio frequency power transmission signals with the transmission characteristics would be transmitted to the location of the receiver;
• and
• in accordance with a determination that the predicted SAR value would be less than a predefined SAR value, cause the wireless-power transmission device to transmit the radio frequency power transmission signals to the receiver.

A system for wireless power transmission, the system comprising:

• one or more transmitters, each of the one or more transmitters configured to monitor specific absorption rate (SAR) values to determine when to wirelessly transmit power to a receiver, each transmitter comprising a microprocessor configured to:
• receive, at a wireless-power transmission device, an indication from a receiver responsive to wirelessly delivered RF power, the receiver being present at a location within a transmission field of the wireless-power transmission device;
• in response to receiving the indication, determine transmission characteristics to use for transmitting radio frequency power transmission signals to the receiver;
• determine, using stored SAR value determination criteria and one or more of the transmission characteristics, a predicted SAR value that would be present at the location after the radio frequency power transmission signals with the transmission characteristics would be transmitted to the location of the receiver;
• and
• in accordance with a determination that the predicted SAR value would be less than a predefined SAR value, cause the wireless-power transmission device to transmit the radio frequency power transmission signals to the receiver.