Guidance of the Center of Pressure Using Haptic Presentation

TL;DR

This paper investigates guiding body posture by modulating the Center of Pressure (CoP) through haptic feedback. Using a Wii Balance Board to sense CoP and waist-worn vibration motors to provide directional cues, the authors compare haptic guidance with visual and auditory feedback across eight target locations, measuring induction time and gathering user responses. Results show no significant difference in induction time between haptic and visual feedback, though auditory guidance differs; participants generally found haptic feedback more intuitive and easier to use. The work demonstrates the feasibility of CoP-based haptic guidance and suggests potential for intuitive balance and posture training, with future work extending to more realistic movement tasks.

Abstract

Accurately instructing posture and the position of the body's center of gravity is challenging. In this study, we propose a system that utilizes haptic feedback to induce the Center of Pressure (CoP) movement. The Wii Balance Board is employed to sense the CoP, and vibration motors are used for haptic feedback. To provide a comparison, inductions were also performed using visual and auditory feedback, and the time required for induction was measured. Additionally, after the experiments, a questionnaire survey was conducted.

Figures (6)

• Figure 1: Wii Balance Board and Vibration Motor
• Figure 2: Wii Balance Board
• Figure 3: How to Vibrate
• Figure 4: System Flow
• Figure 5: Measured Time of Each Participants