EYE CONTROLLED WHEELCHAIR USING ARM CORTEX-A7 CPU

An electric-powered wheelchair is a wheelchair that is propelled by means of an electric motor rather than manual power. Motorized wheelchairs are useful for those unable to propel a manual wheelchair. This wheelchair is used for patients with severe disabilities or life threatening diseases as well as for the elderly. To take care of different disabilities various wheelchairs with different electronic components have already been developed, such as wheelchairs having joystick control, head control etc. Many people with disabilities do not have the ability to control a powered wheel chair using the above mentioned interfaces. The proposed model is a possible alternative. In this project, we use an optical eye tracking system to control a motorized wheel chair. The camera continuously monitors the pupil and tracks it centre. When the pupil moves in a particular direction a corresponding signal is sent to the motor drivers and the wheelchair moves accordingly. When the user moves his eyes balls up the wheelchair moves forward, for left it moves left and right it moves right and in all other cases the wheel chair stops. The camera automatically calibrates the centre of the eye at the start of its working and decides the coordinates for left, right and forward movement accordingly. The rear wheels are connected to the motors and are responsible for movement of the chair. The front wheels are used to steer the wheelchair in the right direction.