Timed Door Locking With Re-Entry Grace Period for Home Security
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Solution Overview
Problem
Elderly individuals face increased vulnerability to home invasions due to existing security systems that compromise privacy and convenience, often requiring constant supervision and failing to account for forgetfulness or accidental door closures.
Innovation Solution
A door security system that includes a first locking mechanism that remains open for a predetermined period, allowing re-entry without a key, and a second locking mechanism that automatically locks after a set time, utilizing RFID chips, face recognition, and voice recognition to secure the door, with data transmission to a central monitoring system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a door locking system is installed to improve security, then home security is enhanced, but privacy is invaded and convenience is reduced
Solution Approach 1:
The door locking system automatically detects when the door is closed and locks it after a predetermined time period without requiring user intervention. The system serves itself by monitoring door status and executing locking actions autonomously, eliminating the need for constant human supervision while maintaining security.
Solution Approach 2:
The system performs preliminary locking action automatically after detecting door closure, locking the door after a predetermined time period. This preliminary action ensures the door is locked before any potential security breach can occur, while the automatic nature preserves user convenience and privacy.
2Reliability
If traditional locking systems are used to ensure security, then the door is secure, but elderly users who forget keys or accidentally close doors are locked out
Solution Approach 1:
The locking system dynamically adjusts its behavior based on temporal conditions. It maintains a locked state after a predetermined time period to ensure security, but the system's automatic timing mechanism provides a grace period that adapts to user needs, allowing re-entry before the lock engages fully, thus balancing security with adaptability for elderly users.
Solution Approach 2:
The system continuously monitors door closure status and provides feedback through automatic locking after a predetermined time period. This feedback mechanism ensures security while the timed nature of the locking provides implicit feedback to users about the locking status, helping elderly users understand when the door is secured without requiring them to manually check or remember key locations.
3Reliability
If constant supervision is implemented to monitor door activity, then security is improved, but privacy is violated and operational costs increase
Solution Approach 1:
Instead of continuous supervision, the system implements periodic action by automatically locking the door after a predetermined time period following closure. This periodic locking mechanism provides security monitoring only when needed (at door closure events), significantly reducing energy consumption and operational costs while maintaining effective security oversight.
Solution Approach 2:
The system extracts the essential security function from continuous supervision and isolates it to specific moments of door closure. By taking out only the critical monitoring moment (when the door closes) and automatically executing a timed locking sequence, the system eliminates the need for constant human or electronic supervision, reducing energy loss and operational costs while preserving security.
Data Source
AI summary
A door security system and method may increase the home security for elderly people without limiting the privacy of or convenience for residents. The method comprises detecting closing of a door; keeping a first locking mechanism of said door in an open position for a first predetermined period of time after said closing; after said predetermined period of time, changing said first locking mechanism into a locked position. The re-entry time frame permits a user to re-enter without a key, immediately after realizing they forgot it. The method may further comprise recognizing motion of a person on a door of a house through a camera provided in or near the door; producing streaming footage; sending the streaming footage to a central processing server; processing the streaming footage for face recognition purpose and checking against several; and storing all data on the server.