10-04-2017, 08:54 PM
INTRODUCTION
While the needs of many individuals with disabilities can be satisfied with power wheelchairs, some members of the disabled community find it is difficult or impossible to operate a standard power wheelchair. This project could be part of an assistive technology. It is for more independent, productive and enjoyable living. The background, objectives, problem statement and scopes of the project will be discussed in this chapter. Problem Statements A handicapped person with locomotive disabilities needs a wheelchair to perform functions that require him or her to move around. He can do so manually by pushing the wheelchair with his hands. However many individuals have weak upper limbs or find the manual mode of operating too tiring. Hence it is desirable to provide them with a motorized wheelchair that can be controlled by moving a joystick or through voice commands. Since the motorized wheelchair can move at a fair speed, it is important that it be able to avoid obstacles automatically in real time. All this should be achieved at a cost that is affordable for as many handicapped people as possible, as well as for organizations that support them. With these requirements in mind we propose an automated wheelchair with real-time obstacle avoidance capability. The power wheelchair control interfaces currently still not enough to provide truly independent mobility for substantial number of person with disabilities. Through research and design wise, the power wheelchair to control development along safe and effective use of the provision independence and self-use mobility. This project will provide disability weight innovative solutions to handle the wheel chairs to use voice interface. This project describes a wheelchair which can be controlled only by using the user's voice. This project aims to facilitate the movement of the disabled people and elderly people who cannot move properly then enable them to lead better lives without any problem. Speech recognition technology is a key technology which can provide a new way of human interaction with machines or tools for controlling a wheelchair. This project consists of two parts which is software and hardware. It is realized by using the microphone as an intermediary which is used as the input of human voice. In this project, Programmable.
The main objective is to design a system which provides solution for the physically handicapped (challenged) people
those who can t move by themselves, using speech commands by interfacing the Speech Recognition kit (HM2007)
with microcontroller and wheel chair.
The voice commands are given to the speech recognition kit with the help of mic and the wheel chair moves
according to the given directions. The movement of the wheelchair is controlled by the motors and motor drivers
connected to the wheels of the chair. The interfacing between speech recognition kit and motors is done by
microcontroller. Here in this project the microcontroller used is P89V51RD2BN. This concept was taken in this
paper to reduce the human efforts in driving a wheelchair.
