An EEG based controlled wheelchair is proposed in this paper. The project
is based on brainwaves which are collected through a device that is mind wave
mobile. These waves are recorded using EEG(electroencephalography). The signals
which are recorded are digitally processed. Our project provides assistant to
the partially disabled people to move around. Electroencephalography (EEG) is
an important tool for studying the temporal dynamics of the human brain’s
large-scale neuronal circuits. However, most EEG applications fail to
capitalize on all of the data’s available information, particularly that
concerning the location of active sources in the brain. Localizing the sources
of a given scalp measurement is only achieved by solving the so-called inverse
problem. Proposed system deals with the extraction of  alpha signal from frontal lobe of cortex and
processes this signal using microcontroller. This system incorporates various
applications of controlling.  In this
project we have considered controlling of general robotics devices due to their
commercial scope. With an emphasis on bringing BMI technology out of the
laboratory and into the home, this project aims to investigate the potential of
producing a reliable, cost-effective and efficient in-home BMI application for
users in the general community.  Mindwave mobile for virtual environment & human-machine
systems capable of Brainwave interaction, without risking human life or limb,
the project has applications in the field of medical for the handicapped people
with no arms and legs. The ultimate need of this system is for controlling
devices with ease and to provide an essential aid to Handicapped people. In
order to represent the robotic technology in the field of human-machine
interaction and wireless communication for allows interactivity in real-time
with virtual objects it is very necessary to develop some or the other
technology that makes the maximum use of robot to help people do their work in
an efficient way in their day to day life. The main motive of the project is to
design and develop a robot that is used to move using wireless system by
Nowadays manual wheelchairs are available which requires specific assistance of
a person to carry the disabled person to different locations , With an EEG
controlled wheelchair, you don’t have to depend on someone else to push the
chair, allowing you the independence of moving about. Minimal efforts are
required to move the wheelchair around.

 The speed of the wheelchair is controlled by
the concentration level of the person so accidents are avoided as in panic
situations the concentration level goes down to zero It is a technological
advancements of Electric wheelchairs available in the market with greater

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the concentration level provided by the Mindwave mobile with the support of the
accelerometer. A.    Electric Wheelchairs Stop Accidental

Once a manual wheelchair gets rolling,
it can be hard to stop. Whether it’s on a ramp or in San Francisco, a manual
wheelchair can be prevented from rolling if you put the brakes on but are much
harder to stop once they get rolling. Electric wheelchairs, on the other hand,
can be slowed down and stopped with just the movement of the accelerometer. The
power that makes it go is also an excellent way of making it stop. They’re sturdier
Weight can be one of the most daunting aspects of power wheelchairs, especially
if you plan to take it anywhere. But that weight can also be a positive.
Because the centre of gravity is lower with electric wheelchairs, they’re much
more difficult to tip over. This means that they’re more solid when it comes to
front-to-back tipping and side-to-side tipping. Weight has its advantages.

B.    They Offer Constant Power

If you’re at a park and in a manual
wheelchair, you or the person pushing you has to take into account the trip
back to the starting point. A person who has lot energy at the start can get
very tired moving a wheelchair around before too long. That means an exhausting
trip back.

C.    Electric Wheelchairs Do the Work

The most obvious reason that electric
wheelchairs beat manual ones is that they do all the work it takes to get
someone from place to place. While many people could get themselves around with
a manual wheelchair, there are some hills and inclines that are hard for just
about everyone. Of course, there are quite a few people who simply don’t have
the arm strength or ability to use their hands that it takes to work a manual
wheelchair. Without a motorized wheelchair, they would always require someone
to move them around, while an electric wheelchair gives them freedom that
wheelchair-bound people from 30 years ago couldn’t experience. The paper is an
essential need for disabled person to remove assistance. The paper implements a
robot whose speed is controlled by the concentration level and the directions
are given by a accelerometer basically it is a need of a disabled person to
move around different places.  This robot
also avoid accidents in panic situations
due to the use of concentration level as in panic situation the concentration
level drops down to zero so is the speed of the motor drops down zero.  This will help the person to independently
move around without having a help or assistance of any different individual. We performed a survey to obtain the concentration levels of handicap
people and normal people, in order to determine the   threshold value of the concentration that will in turn help to provide
the variation in the speed of the motors

As we move further with the survey it has being
determined that the concentration level of a handicapped person is 60-75%
whereas for a normal person the concentration level varies between 70-85%.  In this paper we have described our
application and designed a wheelchair which is fully automated and controlled
using Beta wave (human brain attention) of Mind wave sensor which is detected
from brain signal. It uses Arduino to control wheelchair. The mind-wave mobile
provides the data depending on the concentration level which in turn determines
the speed of the wheelchair and accelerometer is used to provide direction to
the wheelchair. The experimental results were very encouraging, which also
demonstrated different concentration level of individuals which is used is
controlling speed.