Inductive Window Power Transfer for Cordless Outdoor Lighting
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Solution Overview
Problem
Current methods for powering outdoor ornamentation, such as lighted window wreaths, are inadequate due to the use of bulky and unsightly AC power cords, battery replacement requirements, and dependence on sunlight for solar-powered solutions, which can be inconvenient and aesthetically distracting, especially in areas with insufficient sunlight.
Innovation Solution
The implementation of an inductive power system using Wireless Power Transfer (WPT) technology that transmits energy through a non-conductive medium like glass or wood, allowing for the powering of devices without visible wires and independent of sunlight, using an inductive power transmitter coupled to an AC power source and a receiver embedded in the ornamentation, enabling efficient energy transfer across non-conductive surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If AC power cords are used to power outdoor lights, then the lights can be powered reliably, but the cords are bulky, unsightly and introduce electrical shock danger
Solution Approach 1:
The patent introduces an inductive power transmission system as an intermediary between the AC power source and the outdoor lights. The transmitter converts AC power to electromagnetic fields that pass through the window glass, and the receiver converts these fields back to electrical power for the lights. This intermediary system eliminates direct electrical connections to outdoor devices, removing the electrical shock hazard while maintaining reliable power delivery.
2Reliability
If AC power cords are used to power outdoor lights, then the lights can be powered reliably, but the cords are bulky and unsightly
Solution Approach 1:
The patent replaces the mechanical AC power cord system with an electromagnetic field-based power transmission system. Instead of using physical wires that run externally and are visible, the system uses electromagnetic fields that pass through the window glass invisibly. The transmitter and receiver units are mounted on the window surfaces, eliminating the need for external power cords and maintaining aesthetic appearance while ensuring reliable power delivery.
3Ease of operation
If battery packs are used to power outdoor lights, then no power cords are needed, but the batteries must be replaced one or more times during the Holiday Season
Solution Approach 1:
The inductive power system provides continuous power delivery without requiring user intervention for battery replacement. The transmitter receives AC power and continuously transmits electromagnetic fields through the window glass to the receiver, which continuously powers the lights. This self-sustaining system eliminates the need for periodic battery replacements, saving time and effort while maintaining installation convenience.
4Reliability
If solar panels are used to power outdoor lights, then no battery replacement is needed, but sufficient sunlight is required which may not be available in all geographic areas
Solution Approach 1:
The inductive power transmission system provides a universal power solution that works in all geographic locations regardless of sunlight availability. The transmitter can be connected to any AC power source and transmits power through the window glass to the receiver, which then powers the outdoor lights. This system replaces the sunlight-dependent solar panel system with an AC-powered inductive system that functions reliably in all weather conditions and geographic areas.
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 solution provides a safe, aesthetically pleasing, and reliable method for powering outdoor ornaments by eliminating the need for visible wires and battery replacements, ensuring consistent operation regardless of sunlight availability, while also addressing ice and snow melting challenges on building roofs.
Implementation Method 1
The inductive power transmitter is configured to emit an electromagnetic field based on the received AC power
Implementation Method 2
the receiver is configured to receive the electromagnetic field after it has passed through the non-conductive medium and in response develop power
Data Source
AI summary
An inductive power system including an inductive power transmitter coupled to a non-conductive medium, and a power cord that electrically couples the transmitter to an AC power source. The inductive power transmitter is configured to emit an electromagnetic field based on the received AC power. There is an inductive power receiver coupled to the non-conductive medium and separated from the transmitter, wherein the receiver is configured to receive the electromagnetic field after it has passed through the non-conductive medium and in response develop power. A power cord electrically couples the developed power to a power sink.