Triangular Smart Signage for Colorblind Evacuation Guidance
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Solution Overview
Problem
Traditional security and emergency evacuation systems fail to provide clear instructions to occupants, especially those with color blindness, and may inadvertently direct them into threat areas.
Innovation Solution
A visual signaling system using smart signage with independently controllable lights arranged in a triangular pattern, capable of displaying different colors and patterns to indicate safe, unsafe, and cautionary conditions, ensuring clear guidance for all individuals, including those with color blindness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If color-based signaling is used to indicate safe or threat areas, then the system is simple and easily understood by most people, but it fails to serve colorblind individuals who cannot distinguish the colors
Solution Approach 1:
The system divides the signaling function into multiple independent light elements arranged in a triangular pattern, where each light can be independently controlled to create distinct patterns. This segmentation allows creation of multiple distinguishable patterns (e.g., all lights on vs. selective lights on) that convey different meanings, making the system accessible to colorblind individuals who can detect pattern changes even without color perception.
Solution Approach 2:
The system transitions from relying solely on color dimension to incorporating temporal and spatial dimensions through light patterns. By varying which lights are activated and in what sequences, the system creates distinguishable signals across multiple dimensions (pattern configuration, activation sequence), enabling colorblind individuals to perceive and interpret different safety threat levels through pattern recognition rather than color discrimination.
2Loss of information
If general visual and auditory alarms are used to notify occupants to exit, then the system is simple and provides broad coverage, but it does not provide specific instructions on which direction to evacuate or how to avoid threat areas
Solution Approach 1:
The system implements local quality by having different smart signs display different light patterns based on their specific location relative to the threat. Each sign independently determines its signaling pattern according to its spatial relationship with the threat source, providing localized evacuation guidance. This allows occupants at different locations to receive directionally specific instructions (e.g., evacuate left vs. right) without requiring complex centralized control, as each sign autonomously adapts its message to its local context.
Solution Approach 2:
The system employs feedback mechanisms where the light patterns dynamically respond to the detected threat location and real-time occupancy data. The system continuously monitors which signs are visible to occupants and adjusts the signaling patterns accordingly, providing adaptive guidance that updates as the situation evolves. This feedback loop ensures that evacuation instructions remain accurate and useful throughout the emergency response.
3Adaptability or versatility
If multiple light patterns are implemented to indicate different threat levels, then the system provides comprehensive guidance for various scenarios, but it increases the complexity of the lighting control system
Solution Approach 1:
The control system is segmented into modular units where each smart sign independently manages its own light patterns based on pre-programmed logic and received threat location data. This modular approach distributes the control complexity across multiple simple, identical units rather than requiring a single complex centralized system. Each sign contains its own controller that can independently determine and display appropriate patterns (all lights on for immediate danger, selective lights on for directional guidance, etc.) without requiring complex coordination between signs.
Data Source
AI summary
A visual signaling system includes smart signage with a set of three or more lights visible from a single direction. Activation of the lights in a first pattern indicates a hazard and for individuals to move away from the sign. Activation of the lights in a second pattern indicates safety and for individuals to move toward the sign. Activation of the lights in a third pattern indicates a need for caution and for individuals to refrain from approaching the sign. The visual signaling system may include a plurality of smart signs which display different patterns on different signs depending on the location of each sign relative to the hazard, thereby guiding individuals away from the hazard.