Beyond Cybathlon: On-demand Quadrupedal Assistance for People with Limited Mobility
🤖 AI Summary
This work addresses the limitations of conventional wheelchair-mounted robotic arms, which often suffer from large size and poor maneuverability, thereby failing to effectively enhance the daily independence of individuals with mobility impairments. The authors propose a responsive quadrupedal assistive robot system that integrates semantic perception, obstacle-avoidance navigation, semi-autonomous task execution, and a voice-controlled joystick interface within a shared autonomy framework. Designed to provide highly maneuverable manipulation support without compromising the user’s existing mobility, the system significantly reduces cognitive load during operation. Evaluations at Cybathlon 2024 and in-home trials demonstrate state-of-the-art performance in both task efficiency and user-reported experience, surpassing the constraints inherent to traditional fixed assistive devices.
Application Category
📝 Abstract
Background: Assistance robots have the potential to increase the independence of people who need daily care due to limited mobility or being wheelchair-bound. Current solutions of attaching robotic arms to motorized wheelchairs offer limited additional mobility at the cost of increased size and reduced wheelchair maneuverability.
Methods: We present an on-demand quadrupedal assistance robot system controlled via a shared autonomy approach, which combines semi-autonomous task execution with human teleoperation. Due to the mobile nature of the system it can assist the operator whenever needed and perform autonomous tasks independently, without otherwise restricting their mobility. We automate pick-and-place tasks, as well as robot movement through the environment with semantic, collision-aware navigation. For teleoperation, we present a mouth-level joystick interface that enables an operator with reduced mobility to control the robot's end effector for precision manipulation.
Results: We showcase our system in the \textit{Cybathlon 2024 Assistance Robot Race}, and validate it in an at-home experimental setup, where we measure task completion times and user satisfaction. We find our system capable of assisting in a broad variety of tasks, including those that require dexterous manipulation. The user study confirms the intuition that increased robot autonomy alleviates the operator's mental load.
Conclusions: We present a flexible system that has the potential to help people in wheelchairs maintain independence in everyday life by enabling them to solve mobile manipulation problems without external support. We achieve results comparable to previous state-of-the-art on subjective metrics while allowing for more autonomy of the operator and greater agility for manipulation.
Problem
Research questions and friction points this paper is trying to address.
assistance robot
limited mobility
wheelchair-bound
mobile manipulation
daily care
Innovation
Methods, ideas, or system contributions that make the work stand out.
quadrupedal assistance robot
shared autonomy
semantic navigation
mouth-level joystick
mobile manipulation
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