CONTROLING THE ELECTRICAL APPLIANCES USING PC’S

8/8/2019 CONTROLING THE ELECTRICAL APPLIANCES USING PCS

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` MR. E. ASHOK KUMAR(Asst. Prof. EEE Dept.)

SAVEETHA UNIVERSITY

PREPARED BY:-KUMAR GAURAVRUSTAM ANSARIQUYAMUDDIN KHANRAJIV KUMAR BARIK


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` INTRODUCTION

` THE PARALLEL PORT

` PIN DIAGRAM FOR PARALLEL PORT

`

TO IDENTIFY THE MEMORY LOCATION FOR APARTICULAR MACHINE

` CIRCUIT DESCRIPTION

` COMPONENT DESCRIPTION

`

RELAY` SOFTWARE

` SYSTEM REQUIRMENTS


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` HARDWARE REQUIRMENT

` SOFTWARE REQUIRMENT

` WORKING

` APPLICATION` ADVANTAGES

` SCOPE FOR EXTENSION

` CONCLUSION


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` It can be used to control the printer as well as

house hold and other electrical appliances.

` The computer program included as part of theproject controls RELAYS through the interface

circuit,which in turn, switch the appliances ON or

OFF.

` The parallel port has 12 output including 8 data

lines and 4 control lines.


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*The parallel port or line printer terminal is found on

the back of a PC as a D type 25 pin female

connector.

*The port is composed of:-

-> 4 control lines

-> 5 status lines and

-> 8 data lines

*The original parallel port is a bundel of three ports.


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*These are

-> data port

-> status port and

-> control port

*Each of them having specific addresses assigned

to them.


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` We are using DB25 connector for parallel port.

` Pins 2 through 9 from the 8 bit data output port.

` Pins 1, 14, 16, and 17 from the control port which

is capable of reading / writing.` Pins 10 through 13 and pin 15 together form the

status port.


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` To identify the assingments for a particular

machine:-

->the DOS debug program can be usedto display memory locations.

` For example:-

>debug- d 0040:0008 L 80040:0008

78 03 78 02 00 08 00 00


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` Thus according to the addresses displayed it

follows that the address of the data port is

0*0378 and so on.


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` Relay

` One 470 ohm resistance

` One 4.7k ohm resistance

` One opto-couplar IC numbered MCT2E.

` One transister numbered BC148

` A diode numbered IN4007.


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` OPTO-COUPLER

-> is an integrated circuit.

-> number of the IC used is MCT2E

-> it is a combination of a light source anda photosensitive detector.

-> MCT2E opto-coupler IC is used in this

circuit is a 6 pin IC.

`

THE PIN-NUMBERING AND THECORRESPONDING FUNCTION ARE ASFOLLOWS:-


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` 1-As an anode of the diode.

` 2-As a cathode of the diode.

` 3-N internal connection (not used).

` 4-As an emitter of the photo transistor.

` 5-As a collector of the phototransistor.

` 6-As a base of the phototransistor.


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` Relay is a circuit used for tripping and switching

purpose . Here we have used two types of relays,

which are as follows:-

1. Relay ( 6v , 100 ohm, and 1c/o):-used for singletripping.

2. Relay (6v ,100 ohm,and 2c/o):- used for double

tripping.


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` The software program developed for the project

basically consists of:-

` Fornt end developed in c.

` The front end of the program is used for a friendly

and simple interface for the user.


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` The system requirment for this application can be

broadly categorized under two heading namely:-

` HARDWARE REQUIRMENT

` SOFTWARE REQUIRMENT


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` PROCESSOR:-

` Pentium | / Pentium || / Pentium ||| etc.

` MEMORY:-` 32MB RAM (minimum).

` RESOLUTION:-

` 800*600 Pixels


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` PLATFORM:- Any operating system such as

window XP, VISTA, 7.

` LANGUAGE:- C or c++.


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` IN THIS PROJECT DEVELOPED :-

` The software program and the hardware circuitwork interactively to generate appropriate signalsto switch the connected devices on or off.

` An in the interface to switch a device on / off :- itrequired to enter the valid values of bits number.


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` This code on the behalf of the user interacts with

the back end which is developed in C++.

` The executable binary code in C++ is actually

used for generating appropriate output in the formof current signal at the printer port to activate the

hardware circuit designed.

` The hardware works like an on or off switch

according to the signal from the parallel port of thecomputer.


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` The current singnal from the printer port is fed into

the opto- coupler IC of the circuit.

` On the execution of the software the printergenerate a voltage value of 3.3 volts .

` The low value of current taken as output from the

IC is net sufficient for relay- tripping.


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` So a transister is used in common base

configuration and hence used as an amplifier.

` Thus transister is responsible for amplifying the

current so as to trip the relay.


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` It can be used for domestic purposes such as

offices, schools, hotels etc.

` It can be used as a switching device at placeswhere computers are available.

` Although traffic lights are microprocessor

controlled ,this projects can also be employed forcontrolling the same.


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` User friendly :- project has simple and efficientinterface.

` Easy handling :- maintenance is not required.

` Machine independent :- not any special

packages or hardware is required.


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` This project can be made wirless also transmitter

and reciver can be used with sensors attached at

the hardware box and also at the application

devices so as to make the system wireless.

` We can also use mobile phone and internate

connection for enabling / disabling the electrical

devices.


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` www.google.com

` Fundamental of c

` Integrated circuit

` Ieee` And my friend. Mr D.vishal kumar(work in HCL

TECHNOLOGY PVT. LIMITED as a TECHNICAL

SUPPORT manager in PHONEX DEPARTMENT.)


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Thank you !!!!!

Documents

CONTROLING THE ELECTRICAL APPLIANCES USING PC’S