Wireless Power Pocket Formation and EMF Avoidance

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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 directionality or adapt to the movement of electronic devices within three-dimensional spaces, failing to comply with EMF exposure protection standards and risking exposure to humans and sensitive objects.

Innovation Solution

The system generates and transmits power waves that converge to form a pocket of energy at a predetermined location, using thermal imaging cameras and ultrasound transducers to identify and track living beings and objects, adjusting power levels and wave directionality to avoid sensitive areas and ensure safe energy transmission.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If wireless power transmission is performed over extended distances in three-dimensional spaces, then user mobility and device operability are improved, but the ability to accurately identify and track device locations deteriorates

Engineering Contradiction:

Improveuser mobilityVSAvoiddevice location identification

Core Design Contradiction:

Adaptability or versatilityVSMeasurement precision

Solution Approach 1:

The patent transitions from two-dimensional tracking to three-dimensional spatial mapping by implementing a system that maps the spectrum of available devices throughout a large three-dimensional space. This enables accurate location identification of devices at any position within the transmission field, resolving the contradiction between extended transmission distance capability and location tracking precision.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Device complexity

If power waves are transmitted without directional control, then system complexity is reduced, but the ability to avoid sensitive objects and comply with EMF standards deteriorates

Engineering Contradiction:

Improvesystem complexityVSAvoidEMF exposure to sensitive objects

Core Design Contradiction:

Device complexityVSObject-affected harmful factors

Solution Approach 1:

The patent implements dynamic directional control of power waves through adaptive beamforming and real-time adjustment of transmission parameters based on detected object locations. The system continuously modifies wave directionality and power distribution to avoid sensitive objects while maintaining efficient power transfer, resolving the contradiction between system complexity and harmful factor mitigation.

Inventive Principle:

Principle #15Dynamics

3Device complexity

If conventional proximity-based power transmission is used, then device location tracking is simplified, but user mobility and device operability outside narrow windows are restricted

Engineering Contradiction:

Improvelocation trackingVSAvoiddevice operability

Core Design Contradiction:

Device complexityVSAdaptability or versatility

Solution Approach 1:

The patent implements a universal location tracking system that functions across the entire three-dimensional transmission space rather than being limited to proximity-based operation. The system provides continuous device identification and tracking capabilities throughout the full operational range, enabling users to move devices freely while maintaining power transmission and operability.

Inventive Principle:

Principle #6Universality (Multi-functionality)

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 wireless power transmission while ensuring compliance with EMF exposure standards by dynamically adapting to the environment and avoiding exposure to humans and sensitive objects, ensuring safe and effective energy delivery to electronic devices.

Implementation Method 1

transmitting, by a transmitter, power waves that converge to form constructive interference at a location associated with a receiver

Methodology Applied

Scientific EffectConstructive interference: Interference

Implementation Method 2

generating, by at least one thermal imaging camera in communication with the transmitter, a thermal image of at least a portion of a transmission field of the transmitter

Methodology Applied

Scientific EffectThermal radiation: Thermal Radiation

Implementation Method 3

at least two ultrasound transducers configured to generate ultrasound detection data identifying one or more objects

Methodology Applied

Scientific EffectUltrasound: Ultrasound

Data Source

PatentUS9893538B1Systems and methods of object detection in wireless power charging systems

Publication Date: 2018.02.13 ENERGOUS CORP

AI summary

Embodiments disclosed herein discloses a wireless charging system configured to generate and transmit power waves that, due to physical waveform characteristics converge at a predetermined location in a transmission field to generate a pocket of energy. Receivers associated with an electronic device being powered by the wireless charging system, may extract energy from these pocket of energy and then convert that energy into usable electric power for the electronic device associated with a receiver. The pocket of energy may manifest as a three-dimensional field (e.g., transmission field) where energy may be harvested by a receiver positioned within or nearby the pocket of energy. Video sensors capture actual video images of fields of view within the transmission field, and a processor identifies selected objects, selected events, and/or selected locations within the captured video images.