Evacuation Guidance via Pressure Sensor Analysis
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Solution Overview
Problem
Existing evacuation guidance systems face challenges in accurately detecting the behavioral state of individuals in emergency situations, particularly in conditions of poor visibility or psychological distress, leading to potential malfunctions and increased psychological burden on evacuees.
Innovation Solution
An evacuation guidance system utilizing pressure sensors installed on evacuation routes to acquire and analyze pressure data, determining the presence and state of individuals through temporal changes in pressure patterns, and providing tailored evacuation instructions based on the analysis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If optical sensors or cameras are used to detect evacuees, then detection range is improved, but detection accuracy deteriorates in poor visibility conditions
Solution Approach 1:
The patent replaces optical detection systems (cameras, visual sensors) with pressure sensors that detect mechanical pressure changes on the floor. This substitution allows detection to continue effectively in poor visibility conditions where optical systems fail, while maintaining detection accuracy through direct physical contact measurement.
2Device complexity
If generic evacuation instructions are provided, then system complexity is reduced, but evacuation efficiency deteriorates due to inability to address individual needs
Solution Approach 1:
The system continuously monitors pressure sensor data to detect evacuee behavior patterns and provides dynamic feedback by adjusting evacuation instructions based on detected states. When stagnation or confusion is detected, the system modifies guidance accordingly, creating a closed-loop control system that improves evacuation efficiency without requiring complex centralized control.
Solution Approach 2:
The system enables evacuees to receive personalized guidance automatically based on their own detected behavior patterns, eliminating the need for manual assessment by rescue personnel. The automated detection and response system serves itself by using pressure data to generate appropriate instructions without human intervention.
3Measurement precision
If pressure sensors are installed throughout the facility, then detection accuracy is improved, but device complexity and cost increase
Solution Approach 1:
The system segments the detection task by installing simple pressure sensors only at critical decision points along evacuation routes rather than comprehensive coverage. This segmentation allows accurate detection of evacuee behavior at key locations while avoiding the complexity and cost of ubiquitous sensor deployment.
Solution Approach 2:
The pressure sensors serve multiple functions: detecting presence, determining behavioral state (moving, stationary, confused), and providing location information. This multi-functionality reduces the need for multiple specialized sensors, thereby simplifying the overall system while maintaining high detection accuracy.
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 effectively detects the behavioral state of evacuees and provides appropriate guidance, enhancing the safety and efficiency of evacuations by accurately determining the presence and state of individuals and responding to their psychological condition.
Implementation Method 1
acquiring pressure data generated by at least one pressure sensor installed on an evacuation route in a facility
Data Source
AI summary
In order to detect a behavioral state of an evacuee in a facility and provide, for an evacuee, an evacuation instruction according to the behavioral state, the present invention provides an evacuation guidance system including: a storage means; an analysis control means for acquiring pressure data generated by at least one pressure sensor installed on an evacuation route in a facility and storing the pressure data in the storage means, and also for comparing a plurality of pieces of the pressure data generated in a verification time period, analyzing a temporal change in the pressure data, and analyzing a state of a person located on the pressure sensor; and an evacuation instruction means for generating evacuation instruction information based on an analysis result of the analysis control means.