Sequential LED Guidance Strip for Firefighter Egress
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Solution Overview
Problem
Firefighters often become disoriented and lost during interior firefighting due to limited visibility from smoke and steam, which can lead to severe respiratory injury or death if they cannot find a means of egress quickly.
Innovation Solution
A portable, battery-powered device that provides visual directional guidance by using a sequential illumination of lighting elements, which can be secured to a wall using an adhesive plate, ensuring the user can locate the direction of egress even in zero-visibility environments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If firefighters rely on their sense of touch to find their way through the structure, then they can navigate in low visibility conditions, but they can become lost or disoriented and lose their sense of direction and physical contact with the wall
Solution Approach 1:
The patent introduces a visual intermediary system (lighting elements mounted on walls) that mediates between the firefighter's tactile navigation and the need for directional orientation. The lighting elements serve as visual markers that maintain directional guidance without requiring continuous physical contact with walls, thus resolving the contradiction between ease of tactile navigation and reliability of directional orientation.
Solution Approach 2:
The patent replaces the purely mechanical/tactile navigation system with a visual guidance system using lighting elements. This substitution allows firefighters to maintain directional orientation through visual cues rather than relying solely on tactile contact with walls, thereby improving reliability of directional guidance while preserving the simplicity of the navigation method.
2Productivity
If firefighters perform searches in low visibility conditions, then they can find victims trapped inside the structure, but visibility is limited or zero due to smoke and steam
Solution Approach 1:
The patent employs lighting elements that emit visible light in contrast to the dark, smoke-filled environment. The lighting elements create visual markers that stand out against the low-visibility background, enabling firefighters to navigate and communicate their location effectively despite the presence of smoke and steam that would otherwise obscure visibility.
Solution Approach 2:
The lighting elements act as visual intermediaries that bridge the gap between the firefighter's location and the exit path. These visual markers provide directional guidance through the smoke-filled environment, enabling search operations to proceed effectively while compensating for the poor visibility conditions created by smoke and steam.
3Reliability
If firefighters use sequential illumination of lighting elements for directional guidance, then they can maintain orientation and find their way out, but the device requires battery power and adhesive mounting
Solution Approach 1:
The patent employs disposable adhesive mounting solutions that can be easily applied and removed from wall surfaces. This approach eliminates the need for complex mounting mechanisms, allowing the lighting elements to be quickly deployed and removed without leaving residue or requiring tools. The simplicity of the adhesive mounting directly addresses the complexity concern while maintaining reliability of directional guidance.
Solution Approach 2:
The lighting elements are designed to be self-contained with integrated battery power, eliminating the need for external power sources or complex mounting infrastructure. The device serves itself by providing both power and mounting functionality in a single unit, thereby reducing overall device complexity while maintaining reliable directional guidance capability.
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 device allows firefighters to maintain orientation and find their way out by providing a point of reference and directional guidance, reducing the risk of injury or death by ensuring they can locate the exit even when disoriented and low on air.
Implementation Method 1
The device is secured onto a flat surface by the user, bound using an adhesive plate
Implementation Method 2
A portable, battery-powered device that provides visual directional guidance by using a sequential illumination of lighting elements
Data Source
AI summary
A directional guidance device that has a half loop at one end that identifies that one end, and allows a number of functions relative to that one end. The directional guidance device produces a stream of or sequence of LED lights which started that one end and travel towards the other end. The half loop also is used to house a pull tab that can be removed to provide an adhesive attachment to a surface. The device attaches via a detachable connection to the adhesive plate, so that the device can be removed from the adhesive plate and a new adhesive plate can be used.