Door Lock Proximity Detection and Authentication
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Solution Overview
Problem
Existing door systems lack efficient and convenient methods for automatically unlocking and opening doors based on user presence, often relying on manual operation or limited sensor technologies.
Innovation Solution
A door system that utilizes pressure sensors, ultrasonic receivers, infrared receivers, light curtain sensors, or audio receivers to detect user proximity, transitioning the lock from a locked to an unlocked configuration and moving the door panel from a closed to an ajar position using linear actuators, motorized strike plates, or electromagnetic mechanisms, while authenticating the user through remote signals or biometric verification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual door operation is used, then device complexity is reduced, but ease of operation deteriorates due to lack of automatic user detection and authentication
Solution Approach 1:
The door system automatically detects user presence through pressure sensors, ultrasonic receivers, infrared receivers, light curtain sensors, or audio receivers, authenticates the user, and operates the door without manual intervention. The system serves itself by integrating sensing, authentication, and actuation functions that eliminate the need for users to manually operate door components.
2Measurement precision
If basic pressure sensing is used, then device complexity is minimized, but measurement precision deteriorates in detecting user proximity and intent
Solution Approach 1:
The system combines multiple sensing technologies including pressure sensors, ultrasonic receivers, infrared receivers, light curtain sensors, and audio receivers into an integrated door system. This merging of sensors enhances measurement precision for detecting user proximity and intent while managing complexity through unified control architecture.
Solution Approach 2:
The door system incorporates multiple sensor types that can detect various aspects of user presence and intent through different physical principles. This multi-functionality allows the system to accurately determine user proximity and authentication status using diverse sensing modalities.
3Ease of operation
If lock remains in locked configuration, then security is maintained, but ease of operation deteriorates for authenticated users
Solution Approach 1:
The system continuously monitors sensor inputs to detect user presence and authentication status. When an authenticated user is detected, the lock automatically transitions from locked to unlocked configuration. The system provides feedback through the sensor array to determine when security restrictions should be lifted, balancing security maintenance with convenient operation for authorized users.
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 automatic door operation, allowing users to enter without manual handling, enhancing security and user experience by integrating advanced sensing technologies for precise user detection and authentication.
Implementation Method 1
receiving a signal from a pressure sensor disposed in a sill or a frame of the door system
Implementation Method 2
receiving the signal from an ultrasonic receiver
Implementation Method 3
receiving the signal from an infaRed receiver
Implementation Method 4
receiving the signal from a light curtain sensor
Implementation Method 5
receiving the signal from an audio receiver
Implementation Method 6
a linear actuator, a motorized strike plate, an electromagnetic mechanism, or an electronic hinge that move the door panel
Data Source
AI summary
A method of operating a door system includes sensing a user on an exterior side of a door panel in physical propinquity to the lock such that the lock transitions from a sleep state to an active state, authenticating the user when the lock is in the active state before converting the lock from a locked configuration to an unlocked configuration, and converting the lock from the locked configuration to the unlocked configuration in response to transition to the active state. Authenticating the user includes receiving an authentication signal from a remote device on the user in physical propinquity to the to the lock.