Door Lock Wireless Charging Eliminates Battery Replacement
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Solution Overview
Problem
Conventional door access control systems face issues with unauthorized access management and battery power limitations, leading to safety risks and inconvenience due to the need for frequent battery replacements and unreliable power supply in electrically operated door locks.
Innovation Solution
A door access control system that includes a passive door opening unit, a main control unit, a locking mechanism, and a power supply unit with wireless charging capabilities, utilizing RFID communication for authorization and access management, and an inertia detection unit for security features, ensuring secure and convenient operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a battery is used to provide electricity to the door lock, then wire connection problems are avoided, but the battery has limited capacity requiring frequent replacement and difficulty in knowing remaining electricity
Solution Approach 1:
The door lock system performs self-charging through wireless power transfer when the door is closed, eliminating the need for manual battery replacement and providing continuous operation without user intervention for power recharging
Solution Approach 2:
The system monitors battery charge status and automatically activates wireless charging when power is low, providing continuous feedback to maintain adequate power levels without requiring user awareness or manual intervention
2Reliability
If the door lock is connected by wires to the mains power, then continuous power supply is ensured, but the wires are apt to wear or damage due to repeated bending
Solution Approach 1:
The patent replaces the mechanical wire connection system with a wireless power transfer system using electromagnetic induction, eliminating physical wear and tear on connections while maintaining continuous power supply capability
Solution Approach 2:
The wireless charging system serves multiple functions: it provides power charging, detects door status, and communicates system state without requiring separate wired connections for each function
3Ease of operation
If the administrator manually adds or deletes users to the access list, then access control is maintained, but safety risks occur when the administrator cannot timely update the access list
Solution Approach 1:
The system automatically synchronizes access lists with authorized users without requiring manual administrator intervention, enabling real-time updates when users are added or removed from the access control system
Solution Approach 2:
The system continuously monitors and updates the access list status, providing automatic feedback to maintain accurate access control information without relying on timely manual administrator actions
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 system provides secure door access management by preventing unauthorized access and ensuring continuous operation through wireless charging, reducing the need for frequent battery replacements and enhancing safety with an integrated alarm system.
Implementation Method 1
The control module is configured for driving the active induction module to read the access identification number of the passive door opening unit
Implementation Method 2
An infrared activation module is electrically connected to the control module
Data Source
AI summary
A door access control system (9) includes a door lock (10) mounted to a door (435). A door lock controller (611) is mounted in the door (435) and is electrically connected to the door lock (10). A wireless charging device (511) is electrically connected to the door lock controller (611). A main control unit (659) is provided for operating the door lock controller (611). At least one passive door opening unit (673) is provided to conduct induction with the door lock controller (611) to unlock the door lock (10).