Sensors based automated wheelchair

Abstract

Physically challenged persons may not be able to steer their wheelchair conveniently with the available assistive technologies. Though there are many methods available in recent times to enable their motility, they require efficient and precise control which is most of the times not possible. In recent times there are various control systems that are developed and under developing stage especially for people with various disorders and disabilities. In this project each eye will be having IR transmitter and receiver. Transmitter IR will transmit the light over iris and reflected light will received by IR receiver. Depending upon the intensity of reflected light falling on the receiver, the controller will be understand the user intention of wheelchair movement. Now controller will take the decision of moving forward, left or right as long as IR receiver receives the directions information from the user. DC motors are used to apply torque to the individual wheels so that direction control can be ensured. This system enables the patient to have command over the chair, its direction of movement and the system will also will also sense and alarm the user about the obstacles in the path to avoid any severe consequences the accelerometer monitors the inclination of the wheelchair. This wheelchair helps the patient to move in environments with ramps and doorways of little space by establishing communication between human eye iris and IR sensor.