Device for remote transfer of energy to a moving object by acoustic waves
First Claim
1. A system for remotely and wirelessly transferring energy from a base station to a mobile object moving in a given area of space around the base station, comprising:
- means for emitting a synthetic acoustic wave that is focused in a given direction, which means being located at the level of the base station and supplied with power by the base station, wherein the means for emitting the acoustic wave are composed of an assembly of elementary piezoelectric transducers, each transducer being excited by an electrical signal that is phase referenced with respect to a reference phase, the phases of the signals applied to the various piezoelectric transducers being determined in real time, depending on the position of the mobile object relative to the base station, in such a way that the acoustic waves emitted by the various transducers are combined in space so as to form an acoustic wave that is focused in the direction of the mobile object;
acoustic receiving means, located at the level of the mobile object, for receiving the acoustic wave emitted by the base station and for converting the acoustic wave to an electrical signal;
means for tracking the mobile object so as to determine the position of the mobile object with respect to the base station.
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Accused Products
Abstract
The invention consists of a system allowing remote wireless transfer of energy from a base station to a moving object, in particular a drone, moving in a given zone around the base station. The system includes means for tracking the moving object so as to determine the position of the moving object relative to the base station at any time, means for transmitting a synthetic acoustic wave focused in the direction of the moving object, these two means being located at the base station and powered by the base station, and acoustic reception means, located on the moving object, for receiving the acoustic wave transmitted by the base station and converting the received acoustic wave into an electrical signal and then into a power supply voltage for a battery.
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Citations
14 Claims
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1. A system for remotely and wirelessly transferring energy from a base station to a mobile object moving in a given area of space around the base station, comprising:
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means for emitting a synthetic acoustic wave that is focused in a given direction, which means being located at the level of the base station and supplied with power by the base station, wherein the means for emitting the acoustic wave are composed of an assembly of elementary piezoelectric transducers, each transducer being excited by an electrical signal that is phase referenced with respect to a reference phase, the phases of the signals applied to the various piezoelectric transducers being determined in real time, depending on the position of the mobile object relative to the base station, in such a way that the acoustic waves emitted by the various transducers are combined in space so as to form an acoustic wave that is focused in the direction of the mobile object; acoustic receiving means, located at the level of the mobile object, for receiving the acoustic wave emitted by the base station and for converting the acoustic wave to an electrical signal; means for tracking the mobile object so as to determine the position of the mobile object with respect to the base station. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A system for remotely and wirelessly transferring energy from a base station to a mobile object moving in a given area of space around the base station, comprising:
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means for emitting a synthetic acoustic wave that is focused in a given direction, which means being located at the base station and supplied with power by the base station; acoustic receiving means, located at the level of the mobile object, for receiving the acoustic wave emitted by the base station and for converting the acoustic wave to an electrical signal; means for tracking the mobile object so as to determine the position of the mobile object with respect to the base station; and communication means that allow the base station to guide the mobile object toward an area of space allowing the tracking of the mobile object to be initialized. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A device for remotely and wirelessly transferring energy from a base station to a mobile object moving in a given area of space around the base station, comprising:
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means for emitting a synthetic acoustic wave that is focused in a given direction and receivable by the mobile object to power the mobile object, which means being located at the base station and supplied with power by the base station, wherein the means for emitting the acoustic wave are composed of an assembly of elementary piezoelectric transducers, each transducer being excited by an electrical signal that is phase referenced with respect to a reference phase, the phases of the signals applied to the various piezoelectric transducers being determined in real time, depending on the position of the mobile object relative to the base station; means for tracking the mobile object so as to determine the position of the mobile object with respect to the base station. - View Dependent Claims (14)
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Specification