Braille Block QR Code Placement for Entry Direction Detection
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Solution Overview
Problem
Existing braille blocks for the visually impaired provide limited information, making it difficult for them to navigate accurately to their desired destinations.
Innovation Solution
A braille block with a QR code displayed on a sectional area rather than the center, combined with an information guidance system that uses a camera-equipped device and a center server to analyze movement routes and entry directions, providing customized and accurate navigation information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a QR code is placed in the center of a braille block, then the information provision is simplified, but the accuracy of identifying entry direction deteriorates
Solution Approach 1:
The patent applies asymmetry by positioning the QR code in a specific sectional area (e.g., upper right, lower left, upper left, or lower right) rather than the center of the braille block. This asymmetric placement enables the system to distinguish entry direction based on which section of the block the QR code appears in, resolving the contradiction between simple placement and accurate direction identification.
2Device complexity
If braille blocks provide only limited information, then the block design is simple, but the navigation accuracy for visually impaired users deteriorates
Solution Approach 1:
The patent makes the braille block multi-functional by integrating both traditional tactile braille guidance and QR code-based digital information provision. The QR code contains rich navigation data, movement route information, and destination details that complement the limited tactile information, thereby improving navigation accuracy without fundamentally changing the braille block structure.
Solution Approach 2:
The QR code acts as an intermediary that bridges the gap between the simple braille block and the complex information needs of users. When scanned by a smartphone or camera, the QR code provides detailed navigation information, movement instructions, and route guidance, effectively mediating between the limited physical block and the user's navigation requirements.
3Measurement precision
If the system provides comprehensive navigation information, then the user guidance accuracy is improved, but the information processing complexity increases
Solution Approach 1:
The system performs preliminary action by pre-encoding all necessary navigation information, movement routes, and destination data into the QR code. This allows the information to be prepared and structured in advance, enabling fast and accurate processing when the user scans the code, thereby reducing real-time processing complexity while maintaining high information accuracy.
Solution Approach 2:
The system implements self-service by using the user's existing smartphone camera or QR code scanner to capture and process the information. The smartphone's built-in processing capabilities handle the QR code decoding and information display, eliminating the need for specialized expensive equipment and reducing overall system complexity while providing comprehensive navigation information.
Data Source
AI summary
Proposed are a braille block with a QR code displayed for guiding the visually impaired and an information guidance system using the same, which more accurately provides the next movement information to the visually impaired on the basis of the movement route of the visually impaired and the entry direction into the current braille block analyzed through recognition of the QR code contained in the braille block, especially which analyzes and provides the information necessary to make corrections to the location of the braille block or corrections related to the QR code information contained in the braille block by analyzing whether the visually impaired actually move to or enter the guided braille block in the correct direction, and additionally which selects and provides customized information suitable for the corresponding visually impaired person among information contained in the QR code or content provided through the center server.