Head-Mounted Device for Visually Impaired Navigation
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Solution Overview
Problem
Visually impaired individuals face challenges in navigating and performing daily tasks independently due to limitations in detecting static and dynamic objects, as existing aids like white canes and communication technologies fail to provide comprehensive assistance for routine activities and recognizing objects in various environments.
Innovation Solution
A system comprising a head-mounted device with cameras and speakers, a remote with voice command, a GPS-equipped mobile device, and a server/pocket computer that processes signals to provide audio feedback on object identification and navigation, using artificial intelligence and genetic algorithms to generate 3D acoustic patterns for object recognition and navigation assistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a white cane is used to detect objects, then objects in the path can be detected, but objects in the vicinity (1 to 1.15 m) cannot be detected and mobility is restricted
Solution Approach 1:
The patent combines multiple detection technologies (ultrasound sensors, optical sensors, cameras, GPS) with communication technologies (mobile phone, smartphone) and navigation aids into an integrated system. This merging allows the system to detect objects at various distances, provide comprehensive environmental information, and assist with both near and far navigation tasks simultaneously
Solution Approach 2:
The integrated system performs multiple functions: obstacle detection, object identification, location tracking, route navigation, and communication. This multi-functionality allows a single system to address both the limitation of detection range and the need for mobility assistance
2Adaptability or versatility
If communication technologies are embedded in white cane for remote navigation, then navigation in remote locations is improved, but routine activities like opening doors, locating refrigerator and windows cannot be carried out
Solution Approach 1:
The system segments assistance into different functional modules: GPS-based remote navigation module for outdoor navigation, and camera-based object recognition module for indoor routine activities. Each module can be activated independently based on the user's needs and environment
3Measurement precision
If hand held navigation aid with sensors is used to detect obstacles, then dynamic objects can be detected, but recognition and carrying out of routine activities like locating doors, bed and window still exist
Solution Approach 1:
The patent introduces computer vision technology and image processing algorithms as intermediaries between the sensors and the user. The camera captures images, the system processes them to identify objects like doors, windows, and furniture, then provides audio feedback to the user. This intermediary layer enables routine activity recognition without requiring the user to directly interpret sensor data
4Ease of operation
If conventional aids are used for navigation, then some navigation assistance is provided, but visually impaired individuals become dependent on others or require specialized training to interpret information
Solution Approach 1:
The system provides continuous audio feedback to the user about detected objects, obstacles, and navigation directions. This real-time feedback loop allows users to independently interpret environmental information without requiring external assistance or specialized training to understand complex sensor data
Solution Approach 2:
The integrated system with multiple sensors and processing capabilities enables visually impaired individuals to independently perform navigation and routine activities without relying on white canes, guide dogs, or human assistants. The system processes information and provides actionable guidance autonomously
Data Source
AI summary
A system and method is provided for assisting and guiding a visually impaired person. The system (100) includes a remote (106) configured to take request from a user; a head mounted device (102) configured to capture image and signal in the vicinity of the user and to communicate audio signal regarding the object and navigation; a GPS equipped mobile hand device (109) to navigate in a remote location; and a pocket computer (104) and a server computer (105) configured to collect and process signals received from the head mounted device (102), remote (106) and GPS equipped mobile hand device (109).