Duct-Rail Transmitter Layout for Indoor Wireless Power Transfer
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Solution Overview
Problem
Existing wireless power transfer (WPT) systems do not effectively address the challenge of improving wireless environments indoors, particularly in enclosed spaces like buildings, where delayed waves and multiple reflections reduce efficiency.
Innovation Solution
A transmitter design featuring a housing with a longitudinal direction and lateral width matching a duct rail, incorporating an antenna element inclined at a predetermined angle to optimize electromagnetic wave transmission and reception, allowing for multiple polarization planes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a directional antenna is arranged along the longitudinal direction of a vehicle to reduce delayed waves and multiple reflected waves, then the wireless environment is improved, but wireless power transfer indoors cannot be realized
Solution Approach 1:
The patent transitions from horizontal antenna arrangement (along vehicle longitudinal direction) to vertical arrangement (along duct rail extension direction). This dimensional change allows the antenna to exploit the vertical space in indoor environments while maintaining the benefits of directional radiation for reducing delayed waves and multiple reflections.
Solution Approach 2:
The patent designs a universal transmitter that can be attached to duct rails in various indoor locations (ceilings, walls) and serves multiple functions: reducing delayed waves, improving wireless environment quality, and enabling indoor wireless power transfer. The transmitter housing is designed to match duct rail dimensions, making it adaptable to different installation positions.
2Reliability
If an antenna is provided with directivity to face a window frame direction to reduce multiple reflected waves and delayed waves, then the wireless environment is improved, but indoor wireless power transfer is not addressed
Solution Approach 1:
The patent reorients the antenna from horizontal directivity (facing window frame direction) to vertical directivity (along duct rail extension direction). This allows the antenna to maintain its delayed wave reduction capability while adapting to indoor ceiling/wall mounting scenarios for wireless power transfer.
Solution Approach 2:
The patent changes the orientation parameter of the antenna from horizontal to vertical, and adjusts the radiation pattern to suit indoor environments. The transmitter is designed with specific dimensions matching duct rails, enabling installation in various indoor locations while maintaining optimized radiation characteristics.
3Shape
If the housing width matches the duct rail width for aesthetic attachment, then the appearance is maintained, but the antenna element orientation must be precisely controlled
Solution Approach 1:
The patent introduces asymmetric inclination of the antenna element relative to the housing longitudinal direction. By inclining the antenna at a predetermined angle (e.g., 45 degrees), the system creates an optimized radiation pattern that reduces sensitivity to precise alignment requirements while maintaining the aesthetic housing-duct rail match.
Solution Approach 2:
The patent resolves the alignment precision issue by transitioning from horizontal alignment constraints to vertical arrangement along the duct rail. The antenna's inclined orientation in the horizontal plane, combined with vertical mounting, creates a configuration that is more tolerant of installation variations while maintaining performance.
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
Enhances wireless power transfer indoors by improving reception levels and reducing the need for precise alignment of receivers, maintaining aesthetic integrity with duct rail attachment.
Implementation Method 1
an antenna element housed in the housing
Implementation Method 2
the antenna element is inclined by a predetermined angle in a horizontal direction with respect to the longitudinal direction of the housing
Data Source
AI summary
A transmitter includes a housing having a longitudinal direction and a lateral direction, a width of the housing in the lateral direction being substantially the same as a width of a duct rail, an attachment portion for attaching the housing to the duct rail, and at which an extension direction of the duct rail substantially coincides with the longitudinal direction, and an antenna element housed in the housing.