Walker Safety Device with Proximity Feedback
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Solution Overview
Problem
Users of walkers often experience improper displacement from the walker structure, leading to potential slips and falls due to inadequate feedback on maintaining proper distance, with existing proximity sensors only reminding users of forgotten walkers rather than providing training on proper use during ambulation.
Innovation Solution
A safety device with a housing containing a proximity sensor, processor, input devices, and alarms that preset and monitor desired distances, providing visual, audial, and tactile warnings to maintain proper positioning relative to the walker, and adjusts feedback frequency based on user displacement frequency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a proximity sensor is used to remind users of forgotten walkers, then users are alerted when leaving the walker, but the device does not provide training feedback on proper walker use during ambulation
Solution Approach 1:
The patent implements continuous feedback mechanisms through visual (LED lights), audial (beepers), and tactile (vibrators) signals that provide real-time information to users about their position relative to the walker. This feedback loop trains users to maintain proper positioning by immediately notifying them when they move too far forward or backward, transforming the simple reminder function into an active training system.
Solution Approach 2:
The device enables users to self-regulate their positioning by providing them with the information needed to make adjustments. Through the feedback system, users learn to maintain proper distance from the walker front independently, reducing the need for external supervision or intervention while improving their own safety habits.
2Ease of operation
If multiple feedback mechanisms (visual, audial, tactile) are implemented to train users, then user training effectiveness improves, but device complexity increases
Solution Approach 1:
The patent integrates multiple feedback mechanisms (visual LEDs, audible beepers, tactile vibrators) into a single multi-functional device that can operate independently or in combination. This universal approach allows one device to serve multiple training purposes through different sensory channels, accommodating various user needs and preferences without requiring separate devices for each feedback type.
Solution Approach 2:
The patent combines proximity sensing, processing logic, and multiple feedback output mechanisms into an integrated system housed in a single unit attached to the walker. By merging these components, the device achieves comprehensive user training functionality while minimizing the number of separate parts and simplifying installation and maintenance.
3Measurement precision
If the device provides continuous feedback to users, then user positioning accuracy improves, but user annoyance increases due to excessive warnings
Solution Approach 1:
The patent implements periodic or intermittent feedback rather than continuous warnings. The processor monitors user position continuously but triggers feedback signals only when the user crosses predefined threshold distances (too far forward or too far backward). This periodic action maintains positioning accuracy by providing feedback at critical moments while avoiding unnecessary continuous warnings that would annoy users.
Solution Approach 2:
The patent applies different feedback intensities or types based on the specific situation and user needs. The system can adjust the severity or frequency of warnings depending on how far the user has moved from the proper position, providing stronger feedback for larger deviations and milder feedback for minor adjustments, thereby maintaining accuracy while reducing overall user annoyance.
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
Effectively trains users to stay within the walker's confines by providing timely and regulated feedback, reducing the risk of slips and falls by ensuring proper walker usage through customizable alerts and haptic feedback.
Implementation Method 1
The device includes a housing having a proximity sensor
Data Source
AI summary
A safety device for a walker includes a distance measuring sensor for determining whether a user is at too far or too close distances relative to the front side of the walker. The sensor provides data to a CPU processor indicative of such events. The processor includes logic which analyzes such data and provides audial, visual and/or tactile stimuli to the user warning the user that he/she is at undesirable distances relative to the walker. The process logic can be modified so as to vary the type and/or frequency of warnings given to the user.