Wireless Lock Controller Automatic Calibration Door Position
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing access control systems, such as mechanical locks and passive keyless entry systems, often require user input or may inadvertently lock doors while they are still open, reducing convenience and increasing the risk of accidental locking.
Innovation Solution
A wireless access control system that includes a lock assembly with directional antennas, a touch sensor, and a controller that automatically determines the user's location based on signal strength, allowing the lock to switch between locked and unlocked positions only when the door is closed and the user is inside, using automatic and manual calibration modes to optimize signal adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If automatic locking is implemented without user input, then user convenience is improved, but the risk of accidental locking while door is open increases
Solution Approach 1:
The system performs preliminary detection of door position and user location before executing the locking action. The controller checks whether the door is closed and whether the user is inside the secured area before automatically locking, preventing accidental locking while maintaining convenience.
Solution Approach 2:
The system uses feedback from door position sensors and signal strength measurements to continuously monitor door state and user location. This feedback loop enables the controller to make informed decisions about when to lock or unlock, resolving the contradiction between automatic operation and safety.
2Reliability
If manual input is required for locking, then accidental locking is prevented, but user convenience is reduced
Solution Approach 1:
The system performs self-service by automatically detecting door position and user location, then executing the locking or unlocking action without requiring manual input from the user. This eliminates the need for buttons or switches while maintaining safety through sensor-based decision making.
3Device complexity
If signal strength thresholds are fixed, then system simplicity is maintained, but adaptability to different environments is reduced
Solution Approach 1:
The system dynamically adjusts signal strength thresholds based on measured signal characteristics and environmental conditions. Rather than using fixed thresholds, the controller adapts the thresholds to match the specific installation environment, improving reliability without significantly increasing complexity.
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
Enhances user convenience by eliminating the need for manual input and reduces the occurrence of doors locking while open, ensuring secure access control without user error.
Implementation Method 1
determine whether the remote access wireless device is in an interior area or an exterior area based upon the interior and exterior directional antennas
Data Source
AI summary
A wireless access control system may include a remote access device and a lock assembly. The lock assembly may include a lock, a door position sensor, interior and exterior directional antennas, wireless communications circuitry, a touch sensor, and a lock controller. The lock controller may unlock the lock based upon the touch sensor, determine when the door is closed after being opened based upon the door position sensor, and determine whether the remote access device is in an interior or exterior based upon the directional antennas. The lock controller may also lock the lock when the door is closed and when the remote device is in the interior. The controller may operate in an automatic calibration mode to generate adjusted interior and exterior received signal values and, based upon the adjusted received signal values, enable and disable unlocking when the remote access device is in the exterior and interior, respectively.