The motivation of this research is to improve the ability of ambulation for people with a certain degree of disability. The control of the wheelchair is using two tilt sensors as an input-controlling module. One of the tilt sensors detects the anterior/posterior tilting of the head and moves the wheelchair forward/backward, the other distinguishes the left/right swing of the head. In order to increase the safety of this system, the M3S protocol established by the European Commission is also applied to this research. The system based on M3S protocol has the advantage of real-time signal transmission and emergent status monitoring for SCI patients with C2-C4 level.

Absfract-The motivation of this research is to improve the ability of ambulation for people with a certain degree of disability. The control method is using two tilt sensors~as an inputsontrolling module. One of the Nt sensors detects the anteriorlposterior tilting of the head and moves the wheelchair or mouse cursor forwerdlbackward, the other distinguishes the lefffright swing of the head. In order to increase the safety of this system, the M3S protocol established by the European Commission is also applied to this research. The system based on M3S protocol has the advantage of real-time monitoring for people with severe disabilities. K e y w o r d s M3S, People with Disabilities, Tilt Sensor, Wheelchair, Mouse