Key-In-Lever Electronic Door Lock With Modular Credential Readers
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Solution Overview
Problem
Existing access control systems, particularly commercial ones, face challenges in meeting stringent certification standards set by organizations like BHMA and ANSI, and there is a need for modular and secure electronic door locks that allow easy upgrades and flexibility in credential readers and communication modules without compromising security.
Innovation Solution
The electronic door lock features a modular design with interchangeable credential readers and communication modules, a robust locking mechanism, and a key-in-lever feature that meets certification standards, allowing easy upgrades and enhancements without disturbing the control circuit or locking mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a modular design with interchangeable credential readers and communication modules is implemented, then adaptability and ease of upgrades are improved, but device complexity increases
Solution Approach 1:
The electronic door lock is divided into distinct modular components including credential readers, communication modules, control circuits, and locking mechanisms. Each module can be independently selected, installed, and replaced through standardized interfaces, enabling system adaptability without requiring complete system replacement and managing complexity through functional separation.
Solution Approach 2:
The door lock system employs universal interfaces and mounting structures that accommodate multiple types of credential readers (keypad, card reader, biometric scanner) and communication modules (wired, wireless). This multi-functionality allows a single base unit to support various access control configurations and upgrade paths, improving adaptability while maintaining manageable device complexity through standardized connection protocols.
2Reliability
If a robust locking mechanism meeting certification standards is implemented, then security and reliability are improved, but device complexity and manufacturing difficulty increase
Solution Approach 1:
The locking mechanism incorporates dynamic elements including spring-loaded latches, movable bolts, and actuated locking components that respond to control signals. These dynamic features enable the mechanism to transition between locked and unlocked states reliably while meeting BHMA and ANSI certification standards, balancing security requirements with manageable complexity through proven mechanical designs.
3Reliability
If a key-in-lever feature is added to meet certification standards, then security and reliability are improved, but ease of operation and manufacturing complexity change
Solution Approach 1:
The key-in-lever feature integrates the key cylinder and lever handle into a unified mechanism where key insertion and lever operation work together to engage or disengage the locking mechanism. This combination provides enhanced security through dual authentication (key + mechanical lever action) while maintaining ease of operation through the familiar lever handle interface that users can operate with simple hand motion.
Data Source
AI summary
An electronic door lock is operable to control access to an access controlled area adjacent the inner side of a door. The door lock includes an outer base, an inner base, a locking mechanism movable between a locked and unlocked position in response to a control signal, and a control circuit disposed within the inner base and operable to generate the control signal in response to the presentation of an input credential. A plurality of different types of credential readers are each selectively attachable and removable from an attachment interface when the outer base is attached to the door to electrically connect the selected one of the plurality of different types of credential readers to the control circuit. The selected credential reader receives data from a user or credential and generates the input credential. A communication module is operable to communicate with a device separate from the electronic door lock.