Intelligent Door Lock with Vibration Sensing for Automatic Deadbolt Actuation
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Solution Overview
Problem
Conventional door lock systems, particularly those with deadbolts, are susceptible to unauthorized access due to manual operation requirements and lack of automatic locking mechanisms, especially in situations where electronic controllers are unavailable or compromised.
Innovation Solution
An intelligent door lock system integrated with a vibration/tapping sensing device that converts energy into mechanical energy to lock or unlock doors, allowing for electronic and manual control separation, enabling secure operation even without a functional electronic drive system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual actuation of deadbolt is used, then ease of operation is improved, but reliability is worsened due to susceptibility to unauthorized access and forgetting to lock
Solution Approach 1:
The door locking system automatically locks the deadbolt when the door closes, eliminating the need for manual operation. The system uses sensors to detect door closure and automatically actuates the deadbolt, making the system self-servicing and removing human error from the locking process.
Solution Approach 2:
The patent replaces manual mechanical operation with an automated system using sensors, microcontrollers, and electric actuators. The system detects door closure events and automatically engages the deadbolt through an electric motor or solenoid, substituting human action with automated mechanical-electrical systems.
2Reliability
If automatic locking mechanism is implemented, then reliability is improved, but device complexity is worsened due to additional electronic components
Solution Approach 1:
The microcontroller serves multiple functions: it controls the deadbolt actuation, processes vibration sensor data, manages wireless communication, and handles user authentication. By consolidating multiple functions into a single controller, the system reduces overall complexity despite adding automation capabilities.
Solution Approach 2:
The patent combines the vibration sensing device, electronic controller, and deadbolt actuation system into an integrated door locking system. The vibration sensor, microcontroller, and motor are merged into a unified system that shares common power supply and control architecture, reducing the number of separate components.
3Reliability
If vibration sensing device is added, then reliability is improved through unauthorized access detection, but device complexity is worsened
Solution Approach 1:
The vibration sensor serves dual purposes: it detects unauthorized access attempts (kick detection) and enables communication gestures for authorized users (knocking patterns). This multi-functionality justifies the added complexity by providing both security monitoring and user interface capabilities through a single sensor.
Solution Approach 2:
The vibration sensor acts as an intermediary between physical interactions with the door and the electronic control system. It translates mechanical vibrations from kicks or knocking into electrical signals that the microcontroller can process, enabling indirect detection and communication without direct contact with electronic components.
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 and convenient locking and unlocking capabilities through vibration or tapping recognition, enhancing security by allowing manual operation independently of the electronic system and addressing vulnerabilities in traditional deadbolt mechanisms.
Implementation Method 1
a vibration/tapping sensing device to lock or unlock a door
Data Source
AI summary
An intelligent door lock system includes a drive shaft of a lock device and a circuit coupled to an engine with a memory. A vibration/tapping sensing device is configured to be coupled to the lock device to lock or unlock the door. A device converts energy into mechanical energy coupled to the drive shaft.