artificial leg control-paper

7/31/2019 Artificial Leg Control-paper

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ARTIFCIAL INTELLIGENCE(BRAIN CONTROLLED ARTIFICAL LEGS)

ANJALAI AMMAL MAHALINGAM

ENGINEERING COLLEGE

TIRUVARUR

PRESENTED BY

M.SARAVANAN

R.SURESH

Final Year


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INTRODUCTION

Artificial Intelligence (AI) is focusing on

creating machines that can work like

humans.

AI plays a vital role in every field. Here we going to describe a brain

controlled artificial leg which is

designed to perform normal operation

of a human leg

It works based on human brain signals

alone.


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BRAIN WAVES

In our proposed system we use BETA and ALPHA waves

for processing

Beta 15-30 HZ

Awake ,Normal Consciousness

Alpha 9-14 HZ

Relaxed , calm , meditation

Theta 4-8 HZ

Deep relaxation

Delta 1-3 HZ

Deep ,Dreamless sleep


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BRAIN CONTROLLED INTERFACE

Brain controlled interface is a direct

communication path between human brain

and an external device

It act as interface between brain and

electrode


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GENERAL BLOCK DIAGRAM OF THE

SYSTEM

Electrodecap

Amplifier

Analog

To

DigitalConverter

Signal

Processing

Micro

controller

Unit


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ELECTRODE CAP

Electrode caps contain

electrodes which are

placed on the skull in10-20 arrangement

The electrodes in the

cap is to take the brainsignals in the form of

electrical signals


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AMPLIFIER

The signal from the electrode cap will be in the

range mV and V

These signals are not be suitable for signal

processing. Hence these signals are fed tothe amplifier

Reference electrode

Single electrode in the cap

+v

-v

Amplified Voltage


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ANALOG TO DIGITAL CONVERTER

The output from the amplifier is analog innature and it also have some unwanted

signals.

The unwanted signals are removed byusing filters and fed into analog to digital

converter

The outcome is in the digital formwhich is suitable for processing in

signal processor


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Signal processor

The output from A/D converter is given to signa

processor

In signal processor three main operations done

1. Parameter extraction

2. Pattern classification

3. Pattern identification


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MICROCONTROLLER UNIT

In the microcontroller memory the

reference signal for different operations

are preprogrammed

Microcontroller performs the robotic

operation with the help of a stepper motor

It will do the operations like

walking ,running etc depend upon the

input given by the previous signal

processing unit


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Power supply

These artificial legs are powered by a

Small Lithium ion battery which has to be

charged once in 2 days

Lithium battery have very high charge

density and life time when compared

to other


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ADVANTAGES

COST effective (No need of sensors)

User friendly

Easy to implement and the idea can beextended for both leg

Implanted to all irrespective ofages

The chance error occurrence isless


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CONCLUSION

our recent advancementin the technologies, braincontrolled artificial leg can be

made as a reality.With this system life can

be made easier for the

handicapped persons and theycan also do their day-to-dayactivities normally withoutany difficulties.


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QERIES?

Thank you..

artificial leg control-paper

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