Tactile Guide Strip for Visually Impaired Lab Navigation
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Solution Overview
Problem
In laboratory settings, individuals who are visually impaired due to chemical exposure face difficulties in quickly and safely locating an eye wash station, as existing navigation methods are not effective for visually impaired individuals, increasing the risk of further injury.
Innovation Solution
A tactile guide system comprising a tactile guide strip with distinct tactile sensations in different directions, potentially including raised ridges and arrows, is installed to guide visually impaired individuals from a remote location to the nearest eye wash station, with an activation mechanism that can trigger alarms for assistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If visual cues are used to locate the eye wash station, then the station can be easily located by visually impaired individuals, but visually impaired individuals cannot perceive these cues due to their visual impairment
Solution Approach 1:
The patent replaces visual cues (optical system) with tactile cues (mechanical system). The tactile guide strip provides directional guidance through touch, and the tactile eye wash station marker indicates the station location through tactile feedback, allowing visually impaired individuals to locate the station using their sense of touch instead of sight.
Solution Approach 2:
The patent changes the sensory parameter from visual to tactile. By transforming the information delivery mode from optical signals that visually impaired individuals cannot perceive to tactile signals that can be felt through touch, the system makes the location information accessible to the target user group.
2Measurement precision
If visually impaired individuals spend more time searching for the eye wash station, then they can locate it more accurately, but the chemical damage to their eyes increases with time
Solution Approach 1:
The patent implements preliminary action by pre-installing tactile guide strips leading to the eye wash station and tactile markers at the station location. These tactile cues are prepared in advance and guide visually impaired individuals directly to the station without requiring time-consuming search or trial-and-error, thus reducing the time exposure to chemical damage while ensuring accurate location.
Solution Approach 2:
The tactile guide strip serves as an intermediary element between the starting position and the eye wash station. It provides continuous tactile guidance along the path, enabling visually impaired individuals to navigate accurately and quickly without direct visual contact with the destination, thereby minimizing search time while ensuring precise location.
3Adaptability or versatility
If traditional navigation methods are used in the laboratory, then the system remains simple and familiar, but visually impaired individuals cannot effectively navigate to safety
Solution Approach 1:
The patent segments the navigation function into two distinct tactile components: the tactile guide strip for directional guidance along the path, and the tactile eye wash station marker for indicating the destination. This segmentation allows each component to perform its specific function effectively while maintaining overall system simplicity and familiarity for users.
Data Source
AI summary
Systems for and methods of readily locating an eyewash station in a lab while visually impaired are provided.