Sensor Package Orientation Detection for Entry Point Security
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional door and window security systems using magnets and magnetometers lack nuance in detecting entry point usage, leading to false triggers and requiring complex installations, and can be tricked by placing additional magnets to circumvent security modes.
Innovation Solution
A sensor package comprising an accelerometer and a compass associated with a movable object, which determines orientation changes and generates notices based on inconsistencies in motion profiles, allowing for more precise detection of door or window positions and preventing tampering.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a magnet and magnetometer are used to detect entry point status, then the system can determine whether an entry point is open or closed, but the system lacks nuance in detecting usage patterns and can be tricked by placing additional magnets
Solution Approach 1:
The patent combines multiple sensors (accelerometer, compass, magnetometer) into an integrated sensor package that monitors entry points. This merging allows the system to cross-validate data from different sensor types, making it impossible for intruders to trick the system with fake magnets alone, as the accelerometer would detect unexpected motion patterns and the compass would detect orientation changes inconsistent with normal door operation.
Solution Approach 2:
The system continuously monitors entry point status and provides feedback about motion patterns, orientation changes, and magnetic field variations. By analyzing the correlation between accelerometer data (motion), compass data (orientation), and magnetometer data (magnetic field presence), the system can detect inconsistencies that indicate tampering or attempted circumvention, thereby improving reliability of security mode determination.
2Measurement precision
If conventional magnetometer systems are used, then entry point status can be detected, but the installation is very complex requiring multimeter connections and precise placement
Solution Approach 1:
The patent integrates the accelerometer, compass, and magnetometer into a single sensor package unit. This consolidation eliminates the need for complex wiring and multimeter connections during installation, as the integrated unit requires only power and data connections. The precise placement requirements are reduced because the sensors are pre-calibrated and positioned relative to each other within the integrated package.
Solution Approach 2:
The integrated sensor package performs multiple functions simultaneously: detecting motion (accelerometer), determining orientation (compass), and sensing magnetic fields (magnetometer). This multi-functionality replaces what previously required separate sensor installations and configurations, greatly simplifying the installation process while maintaining measurement precision through the coordinated operation of all sensors.
3Reliability
If the security system requires all entry points to be closed for away mode, then security is maintained, but occupants cannot leave doors slightly ajar for ventilation
Solution Approach 1:
The system dynamically evaluates entry point status by analyzing motion patterns, orientation changes, and magnetic field data rather than relying on simple open/closed binary states. This allows the system to distinguish between a door that is genuinely open (detected by consistent orientation change and magnetic field position) and a door that appears open but is actually closed (detected by inconsistent sensor data patterns), enabling away mode even when doors are slightly ajar for ventilation.
Solution Approach 2:
The system continuously monitors and analyzes sensor data to provide feedback about the actual state of entry points. By cross-referencing accelerometer, compass, and magnetometer data, the system can determine whether a door is truly open or merely appears open due to sensor positioning, allowing occupants to maintain away mode while leaving doors slightly ajar for air circulation.
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 accurate detection of door or window positions, preventing false alarms and tampering, while simplifying system installation and operation by using a combination of accelerometer and compass data to determine orientation changes and generate alerts.
Implementation Method 1
an indication of movement may be received from an accelerometer that is associated with a sensor package
Implementation Method 2
An orientation signal may be received from the compass... A change in the orientation of the object may be determined based upon the orientation signal from the compass
Data Source
AI summary
A sensor package is disclosed that includes a compass and/or an accelerometer. The compass may be activated by a microcontroller in response to an indication of movement detected by an accelerometer. The compass's data may be utilized to determine an orientation for the object such as a door on which the sensor package is situated. The orientation data may indicate that the door is ajar and/or that a second magnetic field is present, suggesting tampering. A notice may be dispatched to a controller for the home security system, a client device, a remote system, etc.