patient helper without vid
TRANSCRIPT
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PATIENT HELPER
By: GUIDED BY:FARZAD TAHERI SRI T.G.GIRIKUMARPARTH RANJAN SINGH Professor, EEE DeptPRATHI SHASTRY M.S.R.I.T, Bangalore
JAGADISH D KINI
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INTRODUCTION
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A person suffering from paralysis orany other injury has to always relyon a helper.
He cannot move around to performroutine tasks like switching on/off a
fan , tube light etc.
Our project aims at providing a
solution to the same.
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Appliances can be turned on and offand light dimmer functions can alsobe achieved by simply bending his
fingers.
Our project also includes amechanism to control wheelchairmotion.
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Glance at components used:
Flex sensor
Arduino package with ATmega 168
microcontroller Xbee wireless module
Relays
H-bridge
Stepper Motor
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PROJECT
DESIGN
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Input Module
CommunicationModule
OutputModule
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Block Diagram
FlexSensor
Microcontroller
ZigBeeTx
ZigBeeRx
Microcontroller
RelaysHomeApplianc
es
Wheelchair
H-Bridge
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Input Module
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Circuit Diagram
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Communication Module
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Output Module
Wheel chair navigation control:
q H BRIDGE
It is an electronic circuit that enables a voltage to beapplied across a load in either direction.
These circuits are often used in robotics and otherapplications to allow DC motors to run forward and
backward.
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Switches ON Motor Status DenotedAs State
S1 and S4 Forward 1
S3 and S2 Reverse 2
S1 and S3 Brake 0
S2 and S4 Brake 0
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The L293D is designed to provide bidirectional drivecurrents of up to 600-mA at voltages from 4.5 V to36 V Motor 1 StateMotor 2 State Wheel Chair
Motion
Assigned to
finger
0 1 Left Turn Ring
1 0 Right Turn Little
1 1 Forward Index
2 2 Backward Middle
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DC MOTOR
q It is an electric motor that runs on direct current (DC)electricity. DC motors can operate directly from rechargeable
batteries.
q1000RPM 12V DC Geared Motors For Robotics Applications
q Very Easy To Use And Available In Standard Size.
q 5kgcm Torque
q No-Load Current = 60 MA(Max), Load Current = 300 MA(Max)
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Home appliance control :
q Relays
A relay is a switch which is operated by electricity
It is usually electromagnetic device
When a small trigger voltage is applied to a relay,power supply to the device is switched on
When the trigger voltage is removed, the power supplyfor the device is also cut off
Some relays can be triggered directly by amicrocontroller output
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Advantages of Relays:
It can be used to turn on and off appliances with triggerpulses from the microcontroller
Can be used to switch for higher current than amicrocontroller can produce
Provides electrical insulation to the sensitive components
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Advantages of Patient
Helper:
No need for a person to remain with the patient
at all times
Easy to use
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Additional functions can be added easily.
Zigbee covers more distance compared to
transmission using IR rays (which is used insome remote controls)
The existing wheel chair control systems aredifficult to use and master.
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Future Work
Communication module needs to beconfigured, installed and
programmed
The Output module of control ofappliances using relays needs to besetup
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REFERENCES
q Towards a Body Sensor Network -based gesture interface for
intelligent home applications datedAUG 2009
q V-ris Jaijongrak ; Chantasuban, S. ; Thiemjarus, S. ; School of Information, Computer& Communication Technolgy (ICT), Thammasat Univ., Pathum Thani, Thailand ,
q Design and development of a hand-glove controlled wheel chair datedMAY 2011
q Akmeliawati, R.; Tis, F.S.B.; Wani, U.J.; Dept. of Mechatronics Eng., Int.
Islamic Univ. Malaysia, Kuala Lumpur, Malaysia
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THANK YOU