Batch 16 Project

7/30/2019 Batch 16 Project

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By:

VOORA RAVITEJAKUSUMA BHARATH

M VINOD AMRUTH RAJ


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An embedded system is a combination of computer

hardware and software that is specifically designed for a

particular function


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House hold appliancesmicrowave ovens, television, DVD player

Cell phones

Integrated systems in aircrafts, automobiles

Medical equipment

Digital musical instruments

Video games

Calculators

Security systems

Robotics


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Real time applications

Size

Cost

Reliability

Safety


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Christopher Reeve Franklin D. Roosevelt


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Hands or legs

Head movement

Eye movement


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About 50,000 people are suffering from the spinal chord problems who are

Unable to move their body parts.


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To sense the position of head


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Technical specifications:

Domain : robotics, embedded systems

Software : embedded c , keil, proload

Micro controller : AT89S52

Power supply : +5v regulated power supply,9v battery

Crystal : 11.0592MHz

Dc geared motors : 2

Applications : physically handicapped people


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Features of 89S52:

8 k bytes of flash

256 byte of ram

32 I/O lines

Three 16 bit timers/counterA full duplex serial port


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RF TRANSMITTER AND RECEIVER:

ENCODER: Main purpose of encoder IC is to synchronise themovement of receiver i.e., from parallel to serial.

An RF transmittergenerates radio frequency waves in itscircuits, and to this 'carrier signal', it adds the information

part by modulating the carrier signal. This composite signal

(carrier plus information) is then fed to an antenna (aerial).


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RF TRANSMITTER AND RECEIVER:

An Rf receiverreceives the signal from the atmosphere, fromits own aerial.

The receiver aerial is often quite simple, and the signal level is

typically of a few microvolts.

The receiver circuits then strip the information part of the

signal from the carrier part, and amplify this to a useful level .

DECODER : converts serial data stream into parallel data.


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Structure of an H-bridge:


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Operation:

S1 S2 S3 S4 Result

1 0 0 1Motor movesright

0 1 1 0Motor movesleft

0 0 0 0 Motor free runs

0 1 0 1 Motor brakes

1 0 1 0 Motor brakes

1 1 0 0 Shoot-through




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GEAR MOTOR:


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CONCLUSION:

The head movement based assist system was developed with an

idea of serving the physically challenged people.

This project we have made from our heart and

our brain has assisted us.

So our aim is to develop an assistive system which is simple to

operate and of low cost.


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Queries???

Batch 16 Project

Documents

Transcript of Batch 16 Project