Joystick operation restriction system for omnidirectional electric wheelchair

摘要

PROBLEM TO BE SOLVED: To provide a limiting method for joy-stick operation of an electromotive wheelchair of all direction movement type and its system with which even elderly people can drive the electromotive wheelchair avoiding obstacles easily and perfectly through the operation of the joy-stick. SOLUTION: An environment recognition sensor 1 recognizes distance between the electromotive wheelchair of all direction movement type and the obstacles. The impedance of joystick 25 becomes to be big in inverse proportion to distance with the electromotive wheelchair of all directions movement type and the obstacles and in proportion to speed of the wheelchair, based on the information from the environment recognition sensor 1 and speed information of the wheelchair.