Voice Controlled Automatic Wheelchair

In general, the people with physical disability come from many reasons such as injury from accident, age and health problems. Therefore, wheelchair is needed to use when handicapped people would like to travel to any places by themselves. However, hands and arms must be used to operate the wheelchair. Consequently, people with hands and arms impairment finds difficult to use a typical wheelchair. These people need to get help from other people around to control the wheelchair and it will create a big problem when these people would like to travel alone. Therefore, the objective of this work is to design, develop and construct a voice controlled automatic wheelchair. The developed wheelchair is able to operate by using the voice commands through the given input. The principle of the developed wheelchair consists of motor system, voice recognition module that would be controlled by the microcontroller. The automatic obstacle detection system is included to the developed wheelchair by using ultrasonic sensors in order to brake the developed wheelchair immediately when any obstacles suddenly come in the way of the developed wheelchair. Therefore, the developed voice controlled wheelchair can provide easy access for people with physical disability and also offer automatic protection from obstacle collision if the mistake of any voice commands occurs.