Reference Sensor False Alarm Prevention for Asset Protection
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Solution Overview
Problem
Existing asset sensors trigger false alarms in non-static environments, such as boats and areas with high seismic activity, due to motion caused by instability rather than asset movement.
Innovation Solution
A system and method that employs a reference sensor mounted on a stable location to differentiate between asset motion and environmental motion, using a timer or acceleration data comparison to prevent false alarms, allowing the asset sensor to distinguish between types of motion and ignore irrelevant movements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If motion detection sensitivity is increased to detect asset movement, then detection capability is improved, but false alarms from environmental motion increase
Solution Approach 1:
The system implements feedback by continuously comparing the reference sensor data with the asset sensor data. The reference sensor provides real-time feedback about environmental motion conditions, which is used to adjust the interpretation of asset sensor signals. When environmental motion is detected, the system adjusts its sensitivity to avoid false alarms while maintaining high detection capability for actual asset movement
2Reliability
If a reference sensor is added to differentiate motion types, then false alarm prevention is improved, but system complexity increases
Solution Approach 1:
The reference sensor serves multiple functions: it detects environmental motion, provides reference data for comparison, enables false alarm prevention, and allows the system to adapt to different installation environments (vehicles, boats, seismic zones). This multi-functionality justifies the addition of the reference sensor by providing multiple benefits from a single component
Solution Approach 2:
The reference sensor is a simplified copy of the asset sensor, using the same accelerometer technology but mounted in a fixed location. This copying approach allows the system to use identical detection mechanisms for both environmental monitoring and asset monitoring, simplifying the overall system architecture while enabling false alarm prevention through comparison
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
Effectively minimizes false alarms by identifying and ignoring motion from moving vehicles or seismic activity, ensuring that only legitimate asset movement triggers an alarm, enhancing the reliability of asset protection systems in unstable locations.
Implementation Method 1
The asset sensor and reference sensor can each be enrolled in zones in a control panel. Motion can be detected by the asset sensor by recognizing a fault in a zone, and determining if a fault has occurred in the corresponding zone of the reference sensor.
Data Source
AI summary
A system and method for false alarm prevention in unstable locations is presented. In one embodiment, the method comprises activating an asset sensor and a reference sensor, detecting motion in the asset sensor, determining if the reference sensor detects motion, and preventing transmission of an alarm if the reference sensor detects the motion. In another embodiment, the method comprises activating an asset sensor and a reference sensor, detecting motion in the asset sensor and transmitting acceleration data in accordance with the detected motion, sensing local acceleration data from the reference sensor, and signaling an alarm if a difference between the transmitted acceleration data and the local acceleration data is greater than a predetermined threshold. The reference sensor can be mounted in a control panel, and the asset and reference sensors can be enrolled in the control panel.