Electronic Lock Wireless Power Pairing Against Duplicate Coils
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Solution Overview
Problem
Conventional wireless power supply devices for electronic locks lack signal encryption and verification mechanisms, making them vulnerable to unauthorized access by intruders who can bypass the locking mechanism using duplicate coils.
Innovation Solution
A wireless power supply device and method that incorporates processors, wireless communication modules, and radio frequency coils to verify the authenticity of the power source before allowing power transmission to the electronic lock, utilizing radio frequency identification technology and handshaking processes to ensure secure pairing between the power supply and receiving units.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wireless power supply is implemented without verification mechanism, then power transmission is simple and direct, but security is compromised allowing unauthorized access
Solution Approach 1:
The patent implements preliminary verification through a handshaking process between the power supply unit and power receiving unit before power transmission begins. The second wireless communication module and first wireless communication module perform authentication to confirm they are paired objects, and the external controller verifies unlocking commands before activation. This preliminary action ensures security is established before the main power transmission function operates.
Solution Approach 2:
The patent introduces wireless communication modules as intermediaries between the power supply unit and power receiving unit. These modules facilitate the handshaking process and authentication verification, acting as a mediator that enables secure communication and verification without requiring direct physical connection or complex wiring between the power units.
2Reliability
If signal encryption is added to wireless power supply, then security is improved, but device complexity increases
Solution Approach 1:
The patent uses radio frequency identification technology to create and verify digital copies of authentication information. The system stores pairing information in memory modules and uses these digital copies during the handshaking process to verify authenticity without requiring complex real-time encryption algorithms, thereby maintaining security while controlling complexity.
3Reliability
If handshaking process is implemented, then unauthorized power transmission is prevented, but power transmission time is increased
Solution Approach 1:
The handshaking process is implemented as a periodic, structured sequence of authentication steps rather than a continuous complex verification. The system follows a defined periodic protocol where the wireless communication modules exchange specific authentication signals in sequence, allowing for efficient verification that minimizes time loss while ensuring thorough authorization checking.
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 security by preventing unauthorized power transmission to the electronic lock, even if an intruder attempts to use a duplicate coil, thereby improving the overall security of the wireless power supply system.
Implementation Method 1
The power supply unit and the power receiving unit are a coil winding structure, which can wirelessly transmit the power provided by the external power source to the electronic lock through electromagnetic induction
Implementation Method 2
power provided by the external power source being transmitted to the second radio frequency coil through the first radio frequency coil using radio frequency identification technology
Data Source
AI summary
A wireless power supply device and method applied to an electronic lock is implemented between a power supply unit and a power receiving unit. The power supply unit is connected to an external power source and has a first radio frequency coil and a first wireless communication module. The power receiving unit is connected to an electronic lock and has a second radio frequency coil and a second wireless communication module. When the power supply unit wirelessly transmits the power provided by the external power source to the power receiving unit, the power receiving unit and the power supply unit perform a handshaking process to confirm whether they are paired objects, if yes, the power is allowed to be transmitted to the electronic lock, so that the security of wireless power supply can be improved.