Aircraft Evacuation Guidance With Dynamic Exit Direction Lights
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Solution Overview
Problem
Current aircraft evacuation systems face challenges in guiding passengers to the nearest exit during emergencies due to smoke, language barriers, and obstacles, making verbal instructions difficult to understand and follow.
Innovation Solution
An intelligent evacuation guidance system that includes floor and seat guidance lights, exit signs, and a controller to provide clear visual directions to the nearest usable exit, considering deployment status and obstacles using sensors for real-time data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If verbal instructions and auditory guidance are used during evacuation, then passengers can receive directional information, but the instructions become difficult to hear and understand due to noise and language barriers
Solution Approach 1:
The patent replaces acoustic guidance systems with optical guidance systems. LED lights embedded in seats and floor panels provide visual directional information, substituting the mechanical/acoustic transmission method with an optical field-based method that is not affected by noise or language barriers.
Solution Approach 2:
The system uses different colors of LED lights to convey different directional information. For example, green lights indicate the direction toward the nearest usable exit, while other colors may indicate different evacuation routes or statuses, allowing passengers to quickly understand guidance without verbal communication.
2Loss of information
If traditional signage and lighting systems are used to guide passengers, then exit directions can be indicated, but the indicators become difficult to see due to smoke or other objects
Solution Approach 1:
The patent transitions from ceiling-mounted or wall-mounted signage to a three-dimensional distributed lighting system embedded throughout the cabin structure - in seats, floor panels, and overhead compartments. This multi-dimensional distribution of light sources ensures that guidance information remains visible from multiple angles and is less susceptible to being obscured by smoke in any single location.
Solution Approach 2:
The system replaces traditional passive signage with active LED lighting embedded in structural components. These LED indicators provide illuminated directional cues that penetrate smoke more effectively than reflective or fluorescent signage, maintaining visibility under smoky conditions.
3Productivity
If passengers must make decisions about which exit to use based on crew instructions, then evacuation can be coordinated, but the decision-making process slows down evacuation due to communication challenges
Solution Approach 1:
The system enables passengers to independently determine the nearest usable exit through visual cues from LED lights without requiring communication with crew members. Each passenger's seat and surrounding area provides directional information, allowing autonomous decision-making and eliminating time lost to verbal communication and comprehension.
Solution Approach 2:
The guidance system is pre-configured to automatically identify and highlight the nearest usable exit for each passenger based on real-time sensor data about exit status. This preliminary determination of optimal routes eliminates the need for passengers to consciously evaluate multiple exit options during the evacuation process.
4Productivity
If the system guides passengers to the nearest exit door, then evacuation distance is minimized, but the exit may be unusable due to faulty evacuation slides, blocked doors, or other obstacles
Solution Approach 1:
The system incorporates sensors that continuously monitor the status of evacuation slides, exit door accessibility, and other critical components. This real-time feedback information is processed by the control system, which then dynamically updates LED guidance to direct passengers toward exits that are confirmed to be usable, preventing guidance to blocked or faulty exits.
Solution Approach 2:
The guidance system transitions from static pre-programmed exit indications to dynamic real-time guidance. The LED indicators automatically adjust their activation patterns based on current exit status information from sensors, ensuring that passengers are always directed toward currently usable exits rather than predetermined locations that may have become inaccessible.
Data Source
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AI summary
An evacuation guidance system (130) may comprise a plurality of floor guidance lights (134), a plurality of seat guidance lights (136), a plurality of exit signs (132), and a controller (140) in communication with the plurality of floor guidance lights (134), the plurality of seat guidance lights (136), and the plurality of exit signs (132). The plurality of floor guidance lights (134) may include a plurality of fore-aft floor lights (134a) and a plurality of port-starboard floor lights (134b). The controller (140) may be configured to determine a closest exit door (104) to each floor guidance light, each seat guidance light, and each exit sign. The controller (140) may command each floor guidance light, each seat guidance light, and each exit sign to indicate a direction of the closest exit door (104).