Forward Tilt Angle Estimation During Wheelchair Operation Using Seat Illuminance Values

Abstract

This study proposes a method for estimating the forward tilt angle using an illuminance sensor, focusing on changes in the illuminance value of the seat surface caused by changes in the posture of the upper limb field during wheelchair operation. The effectiveness of the proposed method was verified by fixing the position of the wheelchair, first establishing the proposed equation by measuring the illuminance values using a board as a preliminary experiment, and then measuring the illuminance values five times per person by three healthy subjects in the same way as in the preliminary experiment and comparing the results with the proposed equation.