Vehicle Arrival Notification for Visually Impaired Boarding
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Solution Overview
Problem
Visually impaired individuals face difficulties in identifying the arrival of a called vehicle, its direction, and the location of the door when boarding public transportation, necessitating a vehicle arrival notification system.
Innovation Solution
A vehicle arrival notifying device that provides information through visual, auditory, and tactile feedback to help visually impaired individuals identify the vehicle, using distance-based notification steps and adaptive feedback methods such as fragrance and wind direction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If visual feedback only is used for vehicle arrival notification, then the notification system is simple, but visually impaired people cannot identify the vehicle
Solution Approach 1:
The notification system is segmented into multiple independent feedback channels (visual, auditory, tactile, olfactory) that can be activated separately or in combination. Each channel handles specific aspects of vehicle identification, allowing the system to adapt to different user needs without requiring all components to be always active.
Solution Approach 2:
The notification device is designed to perform multiple functions through a single integrated system that can provide visual signals (lights), auditory signals (speakers), tactile feedback (vibrators), and olfactory signals (fragrance dispensers). This multi-functional approach ensures universal accessibility for users with different sensory capabilities.
2Adaptability or versatility
If multiple sensory feedback channels are used, then visually impaired people can identify the vehicle, but the device complexity increases
Solution Approach 1:
The notification system dynamically adjusts which feedback channels are activated based on real-time conditions such as vehicle distance, approach direction, and user preferences. The system transitions between different notification modes (e.g., from auditory only to combined auditory-tactile) as the vehicle approaches, optimizing accessibility while managing complexity through conditional activation.
Solution Approach 2:
The system incorporates feedback mechanisms where users can indicate their sensory preferences and the system adapts its notification strategy accordingly. This feedback loop allows the complex multi-channel system to simplify its operation based on user needs, activating only the necessary feedback channels for each situation.
3Measurement precision
If distance-based notification steps are implemented, then notification accuracy improves, but control complexity increases
Solution Approach 1:
The system pre-defines multiple notification zones at different distances from the vehicle (e.g., far zone, middle zone, near zone) with predetermined notification strategies for each zone. This preliminary structuring of notification steps based on distance measurements allows the system to execute appropriate feedback sequences without requiring complex real-time decision-making, simplifying control while maintaining precision.
Data Source
AI summary
Disclosed is a method for notifying arrival of a vehicle to respond to the transportation vulnerable including determining a vehicle notification step based on a distance between the vehicle and a person scheduled to board when the vehicle approaches a location where a call is made in response to the call of the person scheduled to board who is the transportation vulnerable, and providing a vehicle arrival notification based on the determined vehicle notification step.