Power transmission apparatus and method for controlling power transmission
First Claim
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1. A power transmission apparatus comprising:
- a power transmission unit that wirelessly transmits power to an electronic device;
an acquisition unit that acquires a value of a standing wave ratio relating to power to be transmitted to the electronic device, when a predetermined condition is satisfied;
an update unit that updates a reference value with the acquired value of the standing wave ratio when the acquired value of the standing wave ratio is smaller than the reference value; and
a detection unit that detects removal of the electronic device when a difference between the acquired value of the standing wave ratio and the updated reference value is greater than a threshold.
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Abstract
According to one embodiment, a power transmission apparatus wirelessly transmits power to an electronic device, acquires a value of a standing wave ratio relating to power to be transmitted to the electronic device, when a predetermined condition is satisfied, updates a reference value with the acquired value of the standing wave ratio when the acquired value of the standing wave ratio is smaller than the reference value, and detects removal of the electronic device when a difference between the acquired value of the standing wave ratio and the updated reference value is greater than a threshold.
32 Citations
12 Claims
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1. A power transmission apparatus comprising:
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a power transmission unit that wirelessly transmits power to an electronic device; an acquisition unit that acquires a value of a standing wave ratio relating to power to be transmitted to the electronic device, when a predetermined condition is satisfied; an update unit that updates a reference value with the acquired value of the standing wave ratio when the acquired value of the standing wave ratio is smaller than the reference value; and a detection unit that detects removal of the electronic device when a difference between the acquired value of the standing wave ratio and the updated reference value is greater than a threshold. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method comprising:
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causing a power transmission unit to wirelessly transmit power to an electronic device; acquiring a value of a standing wave ratio relating to power to be transmitted to the electronic device, when a predetermined condition is satisfied; updating a reference value with the acquired value of the standing wave ratio when the acquired value of the standing wave ratio is smaller than the reference value; and detecting removal of the electronic device when a difference between the acquired value of the standing wave ratio and the updated reference value is greater than a threshold.
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12. A non-transitory storage medium that stores a program causing a computer to execute a method, the method comprising:
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causing a power transmission unit to wirelessly transmit power to an electronic device; acquiring a value of a standing wave ratio relating to power to be transmitted to the electronic device, when a predetermined condition is satisfied; updating a reference value with the acquired value of the standing wave ratio when the acquired value of the standing wave ratio is smaller than the reference value; and detecting removal of the electronic device when a difference between the acquired value of the standing wave ratio and the updated reference value is greater than a threshold.
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Specification