Casement Window Locking Bar Sensor with Dual-Position Verification
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Solution Overview
Problem
Existing window security systems often generate false alarms due to incorrect status interpretations, as they only detect the window's open or closed position without verifying if the locking mechanism is engaged, leading to potential unauthorized access.
Innovation Solution
A casement window locking assembly with a sensor system comprising a first sensor to detect the locking handle's position and a second sensor to verify the window sash's closed position, using proximity sensors with magnets and reed switches to ensure accurate locking status feedback, and communication means like Bluetooth for remote monitoring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a simple proximity sensor is used to detect window status, then the device complexity is reduced, but the reliability of status detection deteriorates due to false alarms
Solution Approach 1:
The sensor system is divided into two independent sensor units: a first sensor to detect locking handle position and a second sensor to detect window sash position. Each sensor independently monitors a specific aspect of window status, and both must indicate a closed/locked state for the system to confirm security. This segmentation eliminates false alarms by requiring corroboration from multiple independent detection points.
2Device complexity
If only a single sensor detecting window closed position is used, then the device complexity is reduced, but the measurement precision deteriorates because it cannot verify locking mechanism engagement
Solution Approach 1:
The monitoring function is segmented into two distinct sensor tasks: the first sensor specifically detects whether the locking handle is in the locked position, while the second sensor detects whether the window sash is closed. This division allows each sensor to be optimized for its specific detection target, achieving precise verification of both locking engagement and window closure independently.
3Reliability
If robust alarm systems with multiple sensors are implemented, then the reliability of security monitoring is improved, but the device complexity increases
Solution Approach 1:
The first sensor (locking handle detector) and the second sensor (window sash detector) are integrated into a single unified security system with a common control unit that processes signals from both sensors. The system combines the detection functions into one coordinated assembly mounted on the window frame, reducing installation complexity while maintaining the reliability benefits of dual-sensor monitoring.
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 reliable confirmation of the window's secure status by ensuring both the window sash is closed and the locking mechanism is engaged, reducing false alarms and enhancing security by accurately indicating the window's locked position.
Implementation Method 1
The first sensor comprises a magnet and a reed switch
Implementation Method 2
the second sensor comprising a first window component mounted in the housing and a second window component being arranged to be mounted on the window sash
Data Source
AI summary
A casement window locking assembly comprises a locking handle, a housing, a locking bar, and a coupling member to transfer movement of the locking handle to the locking bar. The locking handle is movable between a locked position and an unlocked position. The assembly comprises first and second sensors, the first sensor comprising a first handle component secured to the coupling member and a second handle component mounted within the housing in order to detect the locking handle being in a locked position, the second sensor comprising a first window component mounted in the housing and a second window component being arranged to be mounted on the window sash in order to detect the window sash being located in a closed position. Rotational movement of the handle causes translational movement of the coupling member. Also, methods of providing a window status sensor system.