Automatic Wheelchair

Krishna A

doi:10.37591/joci.v11i1.4121

Abstract

Automated wheelchair for physically disabled person is a dependent user recognition voicesystem and ultrasonic and infrared sensor systems have been integrated in this proposedwheelchair. In this an automation wheelchair which can be driven using voice commands andwith the possibility of avoiding obstacle by using infrared sensors and downstairs or holddetection by using ultrasonic sensors was proposed. The wheelchair has been developed towork on movement of accelerometer which will help for the person whose limbs are notworking. The speech is recognized by the HM2007 IC or Bluetooth module HC-05andprocessed thus giving commands to the microcontroller accordingly and hence to the robot.When accelerometer moves or tilts its position, thus gives analog signals to microcontrollerand convert it into appropriate digital level so as to move the motor of wheelchair. Infraredsensors are used to detect the obstacle. If any obstacle is detected then it gives signals tomicrocontroller and it will stop the motors. Microcontroller controls the movements of therobot.Keywords: Accelerometer, Automatic wheelchair, Infrared sensor, Micro controller, robot,Ultrasonic Sensor