Abstract: A positioning system includes a positioning-device, a second-transceiver, and one or more controller-circuits. The positioning-device determines a position of a vehicle moving proximate a power-transfer-zone. The positioning-device includes a first-transceiver transmitting signals indicative of the position relative to the power-transfer-zone. The second-transceiver is installed on the vehicle and receives the signals from the first-transceiver. The one or more controller-circuits are in communication with the positioning-device, the first-transceiver, the second-transceiver, and the vehicle. The positioning-device associates with the vehicle when the second-transceiver is within a sensing-range of the first-transceiver thereby directing the vehicle into the power-transfer-zone.

Abstract: A power transfer system includes a positioning-device, a base-coil, and one or more controller-circuits. The positioning-device determines a position of a vehicle moving within a power-transfer-zone. The base-coil is disposed within the power-transfer-zone and emits a magnetic-field in response to electrical power applied to the base-coil. The one or more controller-circuits are in communication with the positioning-device and the base-coil. The positioning-device determines whether any portion of the vehicle overlays the base-coil. The one or more controller-circuits immediately control the electrical power applied to the base-coil such that the base-coil emits the magnetic-field characterized as having value of greater than 27 microteslas, when any portion of the vehicle overlays the base-coil.

Abstract: An electrical charging includes an alternating current power supply, a source coil configured to generate an alternating magnetic field, a capture coil magnetically coupled to the source coil, thereby inducing the capture coil to capture electrical power from the alternating magnetic field, a plurality of magnetic sensors disposed at distinct locations relative to the source coil, each magnetic sensor configured to determine a sensor strength value of the alternating magnetic field, object detection circuitry configured to detect an object at an object location relative to the source coil, and controller circuitry controller circuitry configured to determine an object strength value of the alternating magnetic field at the object location based on sensor strength value from the magnetic sensors and to interrupt electrical power from the power supply when the object detection circuitry detects the object at the object location when the object strength value exceeds a threshold value.

Abstract: A non-contact charging device for charging a battery in a vehicle includes a source resonator, and a foreign object detector. The source resonator is configured to transfer electrical energy to a capture resonator in a vehicle. The foreign object detector is configured to detect a foreign object proximate to the source resonator. The foreign object detector includes a vertical antenna configured to detect a foreign object above the source resonator, and a horizontal antenna configured to detect a foreign object beside the source resonator.

Abstract: A non-contact charging device for charging a battery includes a source resonator, a reference antenna, and a variable gain amplifier. The source resonator is configured to transfer electrical energy to a capture resonator in a vehicle. The reference antenna is configured to detect a reference signal originating from the source resonator. The reference antenna is configured to be less sensitive to a presence of a foreign object than a foreign object detection (FOD) antenna proximate to the reference antenna. The variable gain amplifier is configured to amplify a reference signal from the reference antenna.

Abstract: A non-contact charging device for charging a battery in a vehicle includes a source resonator, and a foreign object detector. The source resonator is configured to transfer electrical energy to a capture resonator in a vehicle. The foreign object detector is configured to detect a foreign object proximate to the source resonator. The foreign object detector includes a vertical antenna configured to detect a foreign object above the source resonator, and a horizontal antenna configured to detect a foreign object beside the source resonator.

Abstract: A non-contact charging device for charging a battery includes a source resonator, a reference antenna, and a variable gain amplifier. The source resonator is configured to transfer electrical energy to a capture resonator in a vehicle. The reference antenna is configured to detect a reference signal originating from the source resonator. The reference antenna is configured to be less sensitive to a presence of a foreign object than a foreign object detection (FOD) antenna proximate to the reference antenna. The variable gain amplifier is configured to amplify a reference signal from the reference antenna.