Door Lock Control Unit with Segmented Mechanical Keyhole
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Solution Overview
Problem
Electronic door locks with added mechanical unlocking mechanisms compromise their anti-burglar effectiveness due to increased vulnerability, as they become more susceptible to unauthorized access when the electronic unlocking device is out of power.
Innovation Solution
A door access control system that integrates a lock control unit with an electric setting device, a latch driving device, a manual setting device, and alarm functionality, allowing electronic unlocking with real-time identification verification and enabling an alarm if the lock is manually unlocked while in away mode, thus maintaining security without relying solely on mechanical means.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a mechanical unlocking mechanism is added to an electronic door lock, then the door lock can be unlocked when the electronic unlocking device is out of power, but the anti-burglar effect is significantly reduced
Solution Approach 1:
The patent divides the unlocking function into two independent systems: an electronic unlocking system with multiple verification methods (fingerprint, face recognition, password) and a mechanical key system. The mechanical key system is segmented into a visible keyhole for normal use and a hidden keyhole activated only by specific triggering conditions, separating the security-critical functions from the emergency backup function.
Solution Approach 2:
The patent introduces a control unit as an intermediary that manages the interaction between the electronic and mechanical unlocking systems. The control unit monitors the electronic system's status and automatically activates the mechanical keyhole only when the electronic system fails or is powered off, preventing unauthorized mechanical access while maintaining emergency unlocking capability.
2Ease of operation
If a mechanical unlocking mechanism is added to an electronic door lock, then the door lock can be unlocked manually, but the door lock becomes more vulnerable to unauthorized access
Solution Approach 1:
The patent applies different security qualities to different parts of the unlocking system. The electronic unlocking interface has high security with multiple verification methods, while the mechanical keyhole has conditional accessibility - the visible keyhole can be accessed only when triggering conditions are met, and the hidden keyhole requires specific actions to activate. This local differentiation of security properties allows manual unlocking capability while minimizing vulnerability.
Solution Approach 2:
The patent implements preliminary anti-action by requiring specific triggering conditions to be met before the mechanical keyhole becomes accessible. The system proactively prevents unauthorized mechanical access by keeping the keyhole inactive or hidden until the control unit determines that electronic unlocking has failed or is unavailable, thereby countering potential attacks before they can occur.
3Reliability
If real-time identification verification is implemented, then unauthorized access can be prevented, but the system complexity increases
Solution Approach 1:
The patent implements a multi-functional identification verification system where a single control unit manages multiple verification methods (fingerprint recognition, face recognition, password input). This universal approach allows the system to perform different verification functions through integrated components rather than requiring separate dedicated systems for each verification method, thereby reducing overall system complexity while maintaining high security.
Data Source
AI summary
A door access control system permitting electronic and mechanical unlocking includes a lock mounted to a door and an unlocking device matched with the lock. The lock can be set to be in a normal mode or an away mode. The unlocking device can be used to input a real-time unlocking identification information that is transmitted to the lock for comparison purposes. The lock can also be unlocked by a key. When the lock is set to be in the away mode, an alarm device is activated if the key is used. In this case, a first input device of the lock can be used to input a real-time alarm deactivating information to deactivate the alarm device. When the lock is set to be in the normal mode, the alarm device does not operate even if the key is used to unlock the lock.