Smoke Detector Algorithm Selection by Mounting Orientation
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Solution Overview
Problem
Existing fire detection systems do not consider the mounting orientation of smoke detectors, which affects their performance in detecting alarm conditions, as patterns of fire or smoke sources differ based on the detector's position and orientation.
Innovation Solution
A method and system that determine the position and orientation of smoke detectors using sensors like accelerometers and gyroscopes, selecting appropriate algorithms for wall-mounted or ceiling-mounted settings, and adjusting sensitivity thresholds based on whether the detector is in a most favorable or least favorable position for optimal smoke detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the same algorithm is used for all mounting orientations, then device complexity is reduced, but measurement precision deteriorates
Solution Approach 1:
The patent applies local quality by implementing different detection algorithms specifically tailored for different mounting orientations. Ceiling-mounted detectors use algorithms optimized for downward smoke detection, while wall-mounted detectors use algorithms optimized for horizontal or upward smoke detection. This orientation-specific algorithm selection improves measurement precision without significantly increasing overall device complexity, as the same hardware platform supports multiple algorithms through software configuration.
2Measurement precision
If mounting orientation is considered in algorithm selection, then smoke detection precision is improved, but device complexity increases
Solution Approach 1:
The patent implements preliminary action by determining the mounting orientation during the initial setup or installation phase. The detector identifies its orientation (ceiling or wall mounting) and pre-configures the appropriate algorithm before actual smoke detection begins. This eliminates the need for complex real-time orientation detection and algorithm switching during operation, thereby improving smoke detection precision while minimizing the increase in device complexity.
3Reliability
If sensitivity thresholds are adjusted based on position, then reliability is improved, but device complexity increases
Solution Approach 1:
The patent applies parameter changes by adjusting sensitivity thresholds based on the detected mounting orientation and position. Ceiling-mounted detectors use different threshold parameters compared to wall-mounted detectors, optimizing detection reliability for each orientation. The system automatically selects appropriate threshold parameters based on pre-determined mounting characteristics, improving reliability while avoiding complex manual configuration or real-time parameter adjustment mechanisms.
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 approach optimizes smoke detection by customizing algorithms for different mounting orientations, reducing false alarms and ensuring consistent performance by fine-tuning sensitivity settings, thereby improving reliability and response times.
Implementation Method 1
making a determination that is based on reading coordinate data from at least one of a 3-axis accelerometer or a gyroscope of the smoke detector
Implementation Method 2
reading coordinate data from at least one of a 3-axis accelerometer or a gyroscope of the smoke detector
Data Source
AI summary
A system and method for selecting an algorithm for monitoring alarm conditions based on a detector orientation and position. A method may include determining a position and orientation of a smoke detector, selecting an algorithm for performing detection of an alarm condition, and operating the smoke detector using the selected algorithm.