Multi-Sensor Magnetic Detection for Door and Window Security States
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Solution Overview
Problem
Security systems often fail to accurately detect the position of objects due to limitations in sensor configuration, leading to false negatives or false positives in determining the state of doors or windows, such as failing to detect a security condition when it is met or raising an alarm without a valid condition.
Innovation Solution
The use of multiple sensors positioned to detect magnetic fields generated by a magnet, with each sensor having a different detectable and non-detectable region, allowing for improved detection by ensuring at least one sensor can detect the magnet's field regardless of null regions, thereby reducing false negatives and positives.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single sensor is used to detect magnetic fields, then device complexity is reduced, but detection reliability deteriorates due to null regions where the magnetic field is not detectable
Solution Approach 1:
The detection system is segmented into multiple sensors positioned at different locations. Each sensor covers a specific detection region, and together they provide comprehensive coverage of the entire detection space, eliminating null regions where no sensor can detect the magnetic field.
Solution Approach 2:
The system transitions from a single-point detection approach to a multi-dimensional detection network by positioning sensors at different spatial locations. This dimensional expansion ensures that the magnet's position can be detected from multiple perspectives, eliminating blind spots.
2Reliability
If multiple sensors are used to detect magnetic fields in different regions, then detection reliability is improved, but device complexity increases
Solution Approach 1:
The detection system is segmented into multiple sensors positioned at different locations. Each sensor covers a specific detection region, and together they provide comprehensive coverage of the entire detection space, eliminating null regions where no sensor can detect the magnetic field.
3Measurement precision
If sensors are positioned to cover all possible magnet locations, then detection precision is improved, but the number of sensors required increases
Solution Approach 1:
Instead of placing sensors at every possible location, the system uses a strategically selected subset of sensor positions that provide sufficient detection coverage. This partial action approach achieves adequate detection precision without the excessive number of sensors that would be required for complete spatial coverage.
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
This configuration enhances the accuracy of detecting the position of objects by minimizing false alarms and ensuring reliable detection of door or window states, even in areas where a single sensor may fail to detect the magnetic field.
Implementation Method 1
detecting a magnetic field that is generated by the magnet
Data Source
AI summary
Systems, apparatuses, and methods for determining a security status are described. Magnetic fields may be detected by sensors that are positioned to determine the location of a magnet. The location of the magnet may be used to determine the configuration of an object to which the magnet is attached. The use of multiple sensors may be used to detect null regions of magnetic fields that may not be detected by one of the sensors. Further, potential malfunctions in the sensors may be determined automatically.