Communication device and feeder device
First Claim
1. A feeder device comprising:
- a feeder element that generates a magnetic field and performs a non-contact electrical power transmission to a receiver element of a receiver device that generates a magnetic field;
at least one magnetic field sensor that includes a pair of sensor elements, the pair of sensor elements detecting magnetic field strength by receiving the magnetic field of the feeder element and the magnetic field of the receiver element, the pair of sensor elements outputting detection signals indicative of the magnetic field strength; and
a controller that calculates a sum of the detection signals indicative of the magnetic field strength detected by the pair of sensor elements such that a component of the magnetic field of the feeder element in the sum of the detection signals is suppressed, and detects a component of the magnetic field of the receiver element of the receiver device.
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Accused Products
Abstract
A communication device includes an antenna, at least one magnetic field sensor, a communication component, and a controller. The antenna generates a magnetic field and communicates with an external device that generates a magnetic field during communication. The at least one magnetic field sensor includes a pair of sensor elements. The at least one magnetic field sensor detects magnetic field strength by receiving the magnetic field of the antenna and the magnetic field of the external device. The communication component communicates with the external device via the antenna. The controller processes output signal indicative of the magnetic field strength detected by the at least one magnetic field sensor. A component of the magnetic field of the antenna in the output signal is suppressed.
17 Citations
10 Claims
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1. A feeder device comprising:
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a feeder element that generates a magnetic field and performs a non-contact electrical power transmission to a receiver element of a receiver device that generates a magnetic field; at least one magnetic field sensor that includes a pair of sensor elements, the pair of sensor elements detecting magnetic field strength by receiving the magnetic field of the feeder element and the magnetic field of the receiver element, the pair of sensor elements outputting detection signals indicative of the magnetic field strength; and a controller that calculates a sum of the detection signals indicative of the magnetic field strength detected by the pair of sensor elements such that a component of the magnetic field of the feeder element in the sum of the detection signals is suppressed, and detects a component of the magnetic field of the receiver element of the receiver device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification