Dynamic Paver Vibration Feedback for Blind Navigation
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Solution Overview
Problem
Blind and visually impaired individuals face challenges in navigating urban areas, particularly when unfamiliar, due to difficulties in locating and using audio-enabled crosswalk guidance systems, which can be unreliable in detecting their presence and timing for safe crossing.
Innovation Solution
A dynamic paver device with vibration feedback, comprising a paver, pressure sensors, and a vibration system, that detects object presence and provides vibrational cues to assist navigation, potentially integrated with optical sensors and a controller to manage vibrational feedback based on object presence and movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If audio-enabled guidance systems are installed on poles at crosswalks, then crossing guidance information can be provided to blind and visually impaired users, but the systems become difficult to locate and use when users are unable to find the button or determine timing
Solution Approach 1:
The patent replaces the mechanical button-pressing system with a pressure sensor system embedded in the paver surface. The pressure sensors automatically detect user presence and provide vibration feedback through the paver itself, eliminating the need for users to locate and press buttons on poles. This substitution of mechanical interaction with automated sensing resolves the contradiction by making the system both reliable (automatic detection) and easy to operate (no button location required).
Solution Approach 2:
The paver acts as an intermediary between the user and the crossing guidance system. Instead of requiring direct interaction with pole-mounted buttons, the paver surface serves as a mediator that detects user presence through pressure sensors and delivers guidance information through vibration feedback. This intermediary approach resolves the contradiction by making the system accessible without requiring users to locate specific buttons or understand timing mechanisms.
2Ease of operation
If pressure sensors and vibration systems are integrated into the paver, then automatic detection and tactile feedback are provided, but the device complexity increases
Solution Approach 1:
The paver is designed to perform multiple functions: it serves as a structural paving element, a pressure sensing interface, and a vibration feedback device. By integrating these functions into a single multi-functional component, the patent reduces overall system complexity compared to having separate systems for each function. The paver universally handles detection, feedback, and structural support, resolving the contradiction between automatic detection capability and device complexity.
3Reliability
If vibration feedback is provided continuously when an object is detected, then safe crossing timing information is communicated, but energy consumption increases
Solution Approach 1:
The vibration feedback system operates periodically rather than continuously. The controller activates vibration feedback at specific intervals or in response to detected pressure changes, rather than maintaining continuous vibration. This periodic operation significantly reduces energy consumption while still effectively communicating safe crossing timing information to users, resolving the contradiction between reliable information communication and energy efficiency.
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
Enhances navigation safety for blind and visually impaired individuals by providing tactile feedback on paver surfaces, helping them determine safe crossing times and navigate complex urban environments more effectively.
Implementation Method 1
at least one pressure sensor connected to the paver, wherein the at least one pressure sensor detects a change in an amount of pressure applied to the top surface of the paver
Implementation Method 2
a vibration system connected to the bottom surface of the paver, wherein the vibration system is configured to provide a vibrational force to the bottom surface of the paver
Data Source
AI summary
The disclosed subject matter relates to a dynamic paver device with vibration feedback. A paver device can include: a paver having a top surface and a bottom surface; a paver frame that creates an interior cavity upon being connected with the paver; at least one pressure sensor connected to the paver, wherein the at least one pressure sensor detects a change in an amount of pressure applied to the top surface of the paver; a vibration system connected to the bottom surface of the paver, where the vibration system is configured to provide a vibrational force to the bottom surface of the paver; and a controller connected to the at least one pressure sensor and the vibration system, where the controller is configured to: receive, from the at least one pressure sensor, a presence indication of an object on the top surface of the paver based on the detected change in the amount of pressure being applied to the top surface of the paver at a first time; and, in response to receiving the presence indication from the at least one pressure sensor, transmit a first signal to the vibration system that causes the vibration system to provide the vibrational force to the bottom surface of the paver.