An ultraviolet sensor attached to t

An ultraviolet sensor attached to the headphone transmits a signal which is received by a receiver in the system. A voice command is given to the HM2007P which commands the system to follow the user wherever the user moves.The microcontroller is programmed to give the necessary command to the LCD and motor ports for each BCD received from HM2007P, to follow the guide and inputs from the keypad. The wheelchair can be operated in any of the three above mentioned ways. Each controlling way is given as an interrupt to the system. The programming methodology is given in the Figure 3.The ultraviolet sensors are placed in the system,such a way three ultraviolet sensors are placed in front of the system for higher accuracy. Two sensors are placed at the sides of the wheelchair for sensing the obstacles, detecting walls and going through doors.The system responds only to particular voice commands. If any other user tries for commanding the wheelchair, the system do not responds. For other users to use the system they have to go through to a voice training course.