RFID Coil Edge Positioning for Electronic Lock Transmission
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional wireless power supply devices for electronic door locks, utilizing coil winding structures, face inefficiencies due to distance between coils, which limits power transmission efficiency and prevents simultaneous power supply and data transmission.
Innovation Solution
A non-contact transmission device with a housing, retainer, and wireless transmission unit, featuring a positioning trough and RFID coil that protrudes from the housing, allowing for closer coil alignment and enhanced electromagnetic induction, enabling efficient power and data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If conventional coil winding structures are used for wireless power supply, then the structure is simple and easy to manufacture, but the transmission efficiency is low due to the distance between coils
Solution Approach 1:
The patent positions the RFID coil at the edge of the housing rather than in the center, utilizing the spatial dimension more effectively. This edge positioning allows the coil to extend closer to the opposing coil across the gap, reducing the effective transmission distance without compromising structural integrity
Solution Approach 2:
The patent creates a localized optimal transmission zone by positioning the RFID coil at the edge where the magnetic field can more effectively bridge the gap between housings. This local positioning optimizes the magnetic coupling region specifically at the interface between the two door panels
2Adaptability or versatility
If conventional coil winding structures are used, then the device structure is simple, but power and data cannot be transmitted simultaneously
Solution Approach 1:
The patent employs an RFID coil that serves dual functions: wireless power transmission through electromagnetic induction and data communication through RFID protocols. This multi-functional component eliminates the need for separate power and data transmission systems, achieving versatility without proportionally increasing complexity
Solution Approach 2:
The patent merges power transmission and data communication functions into a single RFID coil system. By combining these functions in one component, the system achieves simultaneous power and data transmission while maintaining relatively simple device structure
3Loss of energy
If the RFID coil is positioned closer to improve transmission efficiency, then the transmission efficiency improves, but the housing strength may be compromised
Solution Approach 1:
The patent creates a localized optimal transmission zone by positioning the RFID coil at the edge where the magnetic field can more effectively bridge the gap between housings. This local positioning optimizes the magnetic coupling region specifically at the interface between the two door panels
Solution Approach 2:
The housing structure is segmented into distinct functional zones: the positioning trough provides structural support and localization, while the RFID coil occupies the edge region for optimized transmission. This segmentation allows the coil to be positioned at the edge for better transmission efficiency while the positioning trough maintains housing strength
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
The solution significantly improves transmission efficiency by reducing the distance between RFID coils, allowing for simultaneous power supply and data transmission while maintaining structural integrity, and reduces external interference through a magnetism separation plate.
Implementation Method 1
Through electromagnetic induction, the electricity from the external power source is wirelessly transmitted to the electronic lock
Implementation Method 2
reduces external interference through a magnetism separation plate
Data Source
AI summary
A non-contact transmission device for an electronic lock includes a housing. The housing has an accommodation trough to accommodate a retainer in a slidable manner. The retainer is provided with an RFID coil. An inner side of the housing is formed with a positioning trough. When the retainer is slid in the accommodation trough, the RFID coil is positioned in the positioning trough, such that the RFID coil is closer to the outer edge of the housing without lowering the strength of the housing. When two non-contact transmission devices are mounted to a door frame and a door panel respectively, the distance between the RFID coils of the two non-contact transmission devices can be shortened to improve the transmission efficiency between the RFID coils.