Abstract: In response to the problems of poor human-computer interaction and single feedback in existing balance ability evaluation systems, this paper proposes a human-computer interaction strategy for balance ability evaluation, develops a balance ability evaluation device, and designs a human-computer interaction system for balance evaluation based on plantar force. The system uses center of pressure (CoP) variables and plantar force distribution information as balance evaluation feature parameters, which can achieve the evaluation of static, active, and reactive balance abilities. Using plantar pressure information as input signal, balance ability is evaluated through CoP tracking, CoP trajectory mapping, and balance evaluation feature values. The experimental results show that in the process of evaluating balance ability, sensors can accurately collect data in real time, and CoP trajectory maps can accurately reflect the deviation of the human center of gravity. The system can achieve quantitative evaluation of human balance ability.
Keywords: plantar force data; balance ability; center of pressure (CoP) variable; balance evaluation; human-computer interaction