ASSISTIVE ROBOTIC WHEELCHAIR USING VOICE AND BLUETOOTH CONTROL

This project describes a wheelchair which can be controlled using the user’s voice, android based phone or a computer. Our goal is to design the a robotic wheelchair system which is intended to provide a general purpose navigational assistance with the use of an android based phone, computer and voice control, which will allow its user to travel efficiently and with greater ease. The systems is made up of intera ctive servo motors, NXT intelligent brick, Lego sound sensor, USB cable, RJ 12 cable and are connected as: The interactive servo motor was connected to the NXT intelligent brick via the RJ 12 signal cable. The NXT intelligent brick was connected to the com puter to program the robot via the USB cable. The Lego parts were also used for the structural construction of the robot. The NXT intelligent brick was then programmed to move forward, backward, left, right etc. using an android based program and a computer program that was connected wirelessly for the mobility of the robot. The Lego sound sensor was connected to the NXT intelligent brick. Tests conducted shows that for android base phones and computer, using the basic movements which include forward, backward, left and right, the commands are sent to the robot through Bluetooth from an android based phone or a computer. For the voice control, the commands include go, stop, turn left and turn right. These commands are responded accordingly by the robot when the commands are issued. In conclusion, we have been able to develop a robotic wheelchair that uses android based phones and computer system with Bluetooth and the user’s voice to control the wheelchair which tends to ease the lives of many disabled peop le, particularly those with walking problems, by increasing their range of mobility.