Powerless Smart Key with Iris Recognition for Wireless Access
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Solution Overview
Problem
Traditional entrance guard systems rely on physical keys or electronic devices with batteries, which can be inconvenient and require direct possession, lacking advanced biometric verification methods for secure access control.
Innovation Solution
An intelligent entrance guard system utilizing a powerless smart key with iris recognition and wireless energy transfer, where the smart key is powered wirelessly and verifies the user's iris image and unique identification code, allowing secure unlocking without the need for physical key possession.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a physical key is used for entrance control, then the system is simple to implement, but the operator must maintain direct possession of the key which is inconvenient and insecure
Solution Approach 1:
The patent replaces the mechanical key system with an optical biometric verification system. The iris recognition unit captures and verifies iris images, substituting the mechanical key possession model with a biometric authentication model that eliminates the need for physical key carriage while enhancing security through unique physiological identification.
Solution Approach 2:
The patent creates a digital copy of the user's iris pattern and stores it for verification purposes. This digital biometric template serves as a replacement for the physical key, allowing authentication without requiring the user to carry or physically present a key, thereby improving convenience while maintaining security.
2Ease of operation
If electronic devices with batteries are used for access control, then wireless communication is enabled, but the batteries require maintenance and replacement
Solution Approach 1:
The powerless smart key utilizes wireless power transfer technology to receive energy automatically when in proximity to the intelligent entrance guard. This self-charging mechanism eliminates the need for manual battery replacement or charging by the user, as the device draws power on-demand through electromagnetic coupling with the base unit.
Solution Approach 2:
The patent introduces an electromagnetic field as an intermediary for both power transfer and data communication. The power transfer unit and wireless communication unit utilize the electromagnetic field to transmit energy and information between the entrance guard and the smart key, eliminating the need for direct electrical connections or onboard batteries.
3Reliability
If traditional electronic access systems are used, then basic authentication is provided, but advanced biometric verification methods are lacking
Solution Approach 1:
The intelligent entrance guard integrates multiple functions into a single unified system: the controller manages authentication logic, the power transfer unit provides wireless charging, the iris recognition unit performs biometric verification, and the wireless communication unit handles data exchange. This multi-functional integration achieves advanced security without proportionally increasing system complexity.
Solution Approach 2:
The patent combines power transfer, communication, and biometric verification functions into an integrated system architecture. The controller coordinates all subsystems, merging what could be separate complex components into a unified authentication platform that enhances security while managing complexity through centralized control.
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
Enables secure and convenient access control by using biometric verification, eliminating the need for physical key possession and ensuring secure entry through wireless communication and electromagnetic induction for power transfer.
Implementation Method 1
a current transmitter transmits electric energy supplied by a power unit wirelessly by electromagnetic induction
Implementation Method 2
an iris recognition unit scans an eye of a user to recognize an iris image of the user
Data Source
AI summary
An intelligent entrance guard unlocking method includes: transmitting electric energy of an intelligent entrance guard by wireless electromagnetic radiation via a transmit coil; receiving the electric energy via a receive coil of a powerless smart key; scanning an eye of a user to recognize an iris image of the user and storing the iris image in a second storage unit of the powerless smart key; controlling a wireless transmit unit of the powerless smart key to transmit a wireless signal containing the iris image to the intelligent entrance guard; obtaining a predefined iris image from a first storage unit of the intelligent entrance guard and comparing the iris image with the predefined iris image; unlocking the intelligent entrance guard when the iris image matches with the predefined iris image and not unlocking the intelligent entrance guard when the iris image does not match with the predefined iris image.