Current “smart” rollators typically integrate sensors and give feedback through vibration in the handles. While these solutions can increase awareness, they provide limited support in critical situations. The aim of this project is to investigate whether motor-driven actuation of the wheels can serve as a more intuitive feedback channel. By applying gentle steering corrections, torque resistance, or brake modulation, the rollator itself may guide the user physically rather than only signalling.
The research focuses on a state-of-the-art review of sensor-augmented rollators and related mobility technologies, identifying their strengths and limitations. Based on these findings, a proof-of-concept prototype will be developed and evaluated in controlled lab settings with adult volunteers. Expected outcomes are a functional prototype, design guidelines for mapping sensor input to physical feedback, and an initial assessment of usability and acceptance.
Research questions:
- How can a rollator with active differential wheel feedback provide safe and intuitive indoor navigation support for users?
- What is the current state of the art in smart rollators and related assistive guidance systems (e.g., vibrotactile rollators, white canes, guide dog alternatives, hoverboard-like steering aids)?
- Which forms of feedback and guidance (haptic, auditory, physical steering, braking) are currently applied in (assistive) mobility, and what are their advantages and limitations?
- How can insights from existing research and products be translated into design guidelines for mapping sensor input to motor-driven wheel feedback in a rollator?