Far-Field Wireless Power Transmission Using Sensor-Based Beam Steering
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Solution Overview
Problem
Conventional wireless charging systems are limited in their ability to transmit energy over meaningful distances and do not effectively manage power wave production or directionality, failing to account for user mobility and regulatory safety standards regarding electromagnetic field exposure.
Innovation Solution
The system generates and transmits power waves that converge at a predetermined location to form a pocket of energy, using sensor data and heat-map information to adjust power levels and avoid sensitive objects, ensuring safe and efficient energy transfer while adhering to regulatory limits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If magnetic resonance is used to wirelessly transmit power, then power transmission without wired connection is achieved, but the electronic device must be proximately located within a magnetic field
Solution Approach 1:
The patent transitions from near-field magnetic resonance (3D localized field) to far-field RF power transmission (expanding into additional spatial dimensions), enabling power transmission across larger areas and distances by utilizing directional beam formation and phased array technology
Solution Approach 2:
The system changes the operating parameters from magnetic resonance frequency to RF frequency ranges, and adjusts power density parameters dynamically to achieve both extended transmission distance and compliance with safety exposure limits
2Power
If conventional wireless charging systems are used, then power transmission is achieved, but the systems cannot transmit energy at any meaningful distance
Solution Approach 1:
The system employs dynamic beam steering and adaptive power adjustment, where the transmission characteristics change in real-time based on receiver location and environmental conditions, enabling effective power transmission across varying distances
Solution Approach 2:
The patent expands the transmission field from a localized near-field region to a far-field volumetric space, creating multiple power pockets throughout a three-dimensional transmission zone to serve devices at various distances
3Productivity
If power waves are transmitted to charge devices, then wireless charging is achieved, but the systems do not allow devices to be outside of a narrow window of operability
Solution Approach 1:
The system continuously tracks receiver devices and dynamically adjusts beam direction, power level, and pocket formation to maintain optimal charging efficiency across a wide range of device positions and orientations
Solution Approach 2:
The transmission system serves multiple functions simultaneously: locating receivers, tracking their movement, determining optimal power delivery parameters, and forming power pockets at varying locations to accommodate diverse device positions
4Object-affected harmful factors
If sensor data is used to identify regions to avoid, then safety is improved, but the system complexity increases
Solution Approach 1:
The patent introduces sensor systems as intermediary components that detect objects and generate data, which then inform power wave transmission decisions, creating a layered safety mechanism that manages complexity through modular sensor integration
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach enables efficient and safe wireless power transmission over larger areas, dynamically tracking devices and adapting power levels to ensure compliance with safety standards, allowing for effective charging in diverse environments.
Implementation Method 1
transmitting, by the transmitter, one or more power waves into the transmission field based upon the location, wherein the one or more power waves converge at the location
Implementation Method 2
determining, by a transmitter, a location within a transmission field to transmit one or more power waves based upon sensor data from a sensor indicating a region to avoid
Data Source
AI summary
An example method disclosed herein includes: acquiring, by at least one sensor in communication with a transmitter, data indicating a location of an electrical apparatus within a transmission field of the transmitter. The transmitter is in communication with a mapping memory that stores information that identifies a set of receivers that has each been designated to receive power waves from the transmitter. The method also includes: determining, by the transmitter, using the mapping memory and the data indicating the location of the electrical apparatus, whether the electrical apparatus is a respective receiver of the set of receivers. The method further includes: transmitting, by the transmitter, power waves to the electrical apparatus upon determining that the electrical apparatus is the respective receiver, wherein the power waves are transmitted to converge in a three dimensional space to form one or more pockets of energy at the location associated with the electrical apparatus.