Systems, methods, and apparatus for radar-based detection of objects in a predetermined space
First Claim
1. An apparatus for detecting a presence of an object, comprising:
- a printed circuit board;
at least one radar transmit antenna disposed on a center portion of the printed circuit board;
a plurality of radar receive antennas disposed on a periphery of the printed circuit board, each configured to receive a radar signal from the at least one radar transmit antenna; and
a first transmit coil of a wireless charger disposed over the printed circuit board.
3 Assignments
0 Petitions
Accused Products
Abstract
This disclosure provides apparatuses and methods for detecting foreign objects. An apparatus for detecting a presence of an object comprises at least one radar antenna attached to a wirelessly chargeable vehicle. The at least one radar antenna is configured to transmit a radar signal into a space between a wireless power receiver of the vehicle and a wireless charger as the vehicle moves in a primary direction of movement of the vehicle and receive the radar signal. The apparatus further comprises a radar processing circuit configured to determine a presence of the object in the space based on at least one characteristic of the received radar signal. The radar processing circuit is further configured to provide an indication to receive power from the wireless charger based at least in part on the determining the presence of the object.
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Citations
28 Claims
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1. An apparatus for detecting a presence of an object, comprising:
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a printed circuit board; at least one radar transmit antenna disposed on a center portion of the printed circuit board; a plurality of radar receive antennas disposed on a periphery of the printed circuit board, each configured to receive a radar signal from the at least one radar transmit antenna; and a first transmit coil of a wireless charger disposed over the printed circuit board. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for operating an apparatus for detecting a presence of an object, comprising:
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transmitting a radar signal from at least one radar transmit antenna disposed on a center portion of a printed circuit board; receiving the radar signal utilizing at least a subset of a plurality of radar receive antennas disposed on a periphery of the printed circuit board; determining a presence of the object utilizing a radar processing circuit based on at least one characteristic of the received radar signal; and supplying power to a first transmit coil of a wireless charger disposed over the printed circuit board based at least in part on the determining the presence of the object. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. An apparatus for detecting a presence of an object, comprising:
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at least one radar antenna attached to a wirelessly chargeable vehicle and configured to; transmit a radar signal into a space between a wireless power receiver of the vehicle and a wireless charger as the vehicle moves in a primary direction of movement of the vehicle; receive the radar signal; a radar processing circuit configured to; determine a presence of the object in the space based on at least one characteristic of the received radar signal utilizing at least one of; time-differential detection, wherein the radar processing circuit is configure to; filter the received radar signal; determine the presence of the object when the filtered received radar signal exceeds a predetermined threshold; and space-differential detection, wherein the radar processing circuit is configured to determine the presence of the object when the received radar signal from one of the at least one radar antennas exceeds a predetermined threshold and the received radar signal from another of the at least one radar antennas does not exceed the predetermined threshold; and provide an indication to receive power from the wireless charger based at least in part on the determining the presence of the object. - View Dependent Claims (17, 18, 19, 20, 21, 22)
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23. A method for operating an apparatus for detecting a presence of an object, comprising:
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transmitting a radar signal utilizing at least one radar antenna on a vehicle into a space between a wireless power receiver of the vehicle and a wireless charger as the vehicle moves in a primary direction of movement of the vehicle; receiving the radar signal utilizing the at least one radar antenna on the vehicle; determining a presence of the object based on at least one characteristic of the received radar signal, wherein determining the presence of the object comprises at least one of; time-differential detection comprising; filtering the received radar signal; determining the presence of the object when the filtered received radar signal exceeds a predetermined threshold; and space-differential detection comprising determining the presence of the object when the received radar signal from the at least one radar antenna exceeds a predetermined threshold and the received radar signal from another of the at least one radar antenna does not exceed the predetermined threshold; and providing an indication to receive power from the wireless charger based at least in part on the determining the presence of the object. - View Dependent Claims (24, 25, 26, 27, 28)
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Specification