Head joystick and interactive positioning for the wheelchair

Presented here are the applications of the head joystick, automatic parking equipment and the range-incline tracer for the control and the positioning of a wheelchair suited for people with various types of disabilities and elderly people. The head joystick is based on a set of instructions derived from purposeful head motion with structured five light sources with light spots sampled on the ceiling by means of the camera with 2-D CCD array, which is used together for automatic parking equipment consisting of three structured light sources. The range-incline tracer consists of two structured light sources sampled by means of the camera with 1-D CCD array. The processing of the information from all three devices enables low cost design by means of the single cheap micro-controller.