Capacitance-Based Door Closure Sensing for Concealed Smart Locks
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Smart locks face challenges in accurately determining the closure status of doors without visible mechanisms, which can lead to inefficiencies in locking and unlocking processes.
Innovation Solution
Incorporating a capacitance sensor into the locking mechanism, processor, and memory to determine the closure status based on capacitance measurements, allowing the processor to move a movable member, such as a deadbolt, accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If a magnetic sensor is used to determine door closure status, then the locking system can operate automatically, but the mechanism becomes visible and the aesthetic appearance deteriorates
Solution Approach 1:
The patent replaces the magnetic sensor system with a capacitance sensor system. The capacitance sensor detects changes in capacitance caused by the proximity of the door, enabling automatic detection of door closure status without requiring visible magnetic components. This substitution maintains automation while improving aesthetic appearance by using a different sensing mechanism that can be more easily concealed or integrated into the design.
2Measurement precision
If the capacitance sensor is incorporated into the locking mechanism, then the closure status detection precision is improved, but the device complexity increases
Solution Approach 1:
The capacitance sensor is integrated directly into the locking mechanism structure, merging the sensing function with the existing mechanical components. This integration approach allows for precise closure status detection while minimizing additional complexity by reusing existing structural elements rather than adding separate, standalone sensing assemblies.
3Speed
If the processor moves the movable member based on capacitance measurement, then the locking response time is improved, but the energy consumption increases
Solution Approach 1:
The system uses periodic capacitance measurements rather than continuous monitoring, with the processor checking the closure status at specific intervals or triggered events. This periodic approach maintains fast response times for locking operations while reducing overall energy consumption compared to continuous real-time monitoring of the capacitance sensor data.
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 precise determination of door closure status and automatic movement of locking components, enhancing the locking mechanism's functionality and user control.
Implementation Method 1
a capacitance sensor incorporated into the locking mechanism, the face plate, the movable member, the closure member, or the closure member frame
Data Source
AI summary
An apparatus may include a capacitance sensor, a processor in communication with the capacitance sensor, and memory having programmed instructions that cause the processor, when executed, to determine a closure status of a closure member based on a measurement from the capacitance sensor.