Smart Walker with Autonomous Summon and Auto-Brake
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Solution Overview
Problem
Conventional mobility aids like walkers are often inconvenient and pose safety risks, particularly for the elderly, due to difficulties in braking, folding, and accessibility.
Innovation Solution
An electronically-enhanced walker with motor-driven autonomous summon feature, grip-pressure dependent automatic braking, actuator-powered folding, and a wearable locator beacon, which utilizes sensors, motors, and navigation algorithms to improve convenience and safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual braking is used in conventional walkers, then the braking mechanism is simple, but the user must exert unreasonable force which causes inconvenience and potential injury
Solution Approach 1:
The patent replaces the manual mechanical braking system with an electronic motor-driven braking system. The motorized wheels receive electronic signals to activate brakes automatically, eliminating the need for users to exert physical force on manual brakes. This substitution of mechanical operation with electronic control directly resolves the contradiction by reducing user effort while maintaining braking functionality.
Solution Approach 2:
The braking system operates autonomously by detecting when the user releases the handlebars through pressure sensors. When no grip pressure is detected, the system automatically activates the brakes without requiring user action. This self-service mechanism eliminates the need for users to exert force while ensuring the walker stops when needed, resolving the ease of operation versus force required contradiction.
2Ease of operation
If manual folding mechanism is used in conventional walkers, then the structure is simple, but the user must exert unreasonable force to fold which causes inconvenience and potential injury
Solution Approach 1:
The patent replaces the manual mechanical folding mechanism with an electronic motor-driven folding system. Linear actuators powered by the battery pack provide the force needed to fold and unfold the walker frame, eliminating the need for users to exert physical force. This mechanical-to-electronic substitution directly resolves the contradiction by making folding effortless while maintaining structural functionality.
Solution Approach 2:
The folding system operates autonomously when the user activates the folding mode. The motorized linear actuators automatically perform the folding action without requiring the user to apply force to manual folding mechanisms. This self-service capability resolves the contradiction by eliminating user effort while preserving the walker's collapsible functionality.
3Reliability
If conventional walkers are used, then the device structure is simple, but safety issues arise when users are unable to reach their walkers
Solution Approach 1:
The patent incorporates electronic components including pressure sensors, RF transceivers, and motor controllers into the walker structure. These electronic systems enable autonomous functions such as automatic braking, motorized folding, and user location tracking, which significantly improve safety without requiring complex mechanical structures. The electronic subsystems resolve the safety versus complexity contradiction by providing intelligent safety features that go beyond simple mechanical designs.
Solution Approach 2:
The patent introduces a wearable RF beacon as an intermediary device that communicates with the walker's RF transceiver. This intermediary enables the walker to detect and navigate toward the user automatically, solving the safety problem of users unable to reach their walkers. The intermediary device adds functionality without requiring complex integration into the walker's core structure, resolving the safety versus device complexity contradiction.
4Ease of operation
If conventional walkers are used, then the device is simple, but inconvenience discourages use which causes injury to befall users
Solution Approach 1:
The patent integrates multiple functions into a single electronic control system that manages motorized wheels, braking, folding, and navigation. The battery pack and control circuitry serve universal purposes across all electronic subsystems, providing multiple benefits (automatic braking, motorized folding, summon navigation) without proportionally increasing complexity. This multi-functionality approach resolves the convenience versus complexity contradiction by delivering enhanced ease of operation through integrated electronic systems.
Solution Approach 2:
The walker performs multiple tasks autonomously including automatic braking when handles are released, motorized folding when commanded, and self-navigation toward the user via RF beacon detection. These self-service capabilities dramatically improve convenience by eliminating manual effort, while the centralized electronic control manages the complexity internally. The self-service features resolve the contradiction by providing high convenience through automation without requiring the user to manage complex operations.
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
The enhanced walker addresses the issues of convenience and safety by enabling proactive braking, effortless folding, and navigation towards the user, thereby reducing the risk of injury and improving user experience.
Implementation Method 1
The handles are outfitted with pressure sensors inside the grip to detect when the walker is being held or not
Implementation Method 2
when the RF signal receivers get a signal from a wearable device to begin navigating towards its user
Implementation Method 3
signals are sent to the motors to move the walker towards the summoning device
Implementation Method 4
Additional electronic peripherals can also activate linear actuators to assist in the folding and unfolding of the walker
Data Source
AI summary
The device belongs to the field of assistive walking devices, particularly those with integrated electronics and software. This walker addresses the problem of high fall risk among elderly adults, specifically the increased risk from slippery surfaces and having the walker out of reach. To mitigate the walker being out of reach from the user, it has a unique Summon feature, which incorporates motors, software, and several sensors to enable the walker to self-navigate to the user. This feature can be activated via a button on a compatible wrist-wearable device on the user. To prevent falls on slippery surfaces the walker has an Autobrake, Compared to similar devices, this walker allows for increased convenience and safety from falls.


