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ELECTRONIC CARD LOCK SYSTEM

DEPARTMENT OF ELECTRONICS & COMMUNICATION

Faculty of Technology

Dharmsinh Desai University,Nadiad

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CERTIFICATE

This is to certify that the project titled "Electronic card lock system" by Parmar Mayur (EC-85) is

a bonafide work carried out by him during the 6th semester of their under graduate course in theElectronic & communication engineering under my guidance and supervision .

Prof. B.P.Patel Dr. N.J.Kothari

Project supervisor, Head,

Department of Department of

Electronics & Communication, Electronics & Communication,

Faculty of technology, Faculty of technology,

D.D.University,Nadiad. D.D.University, Nadiad.

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CERTIFICATE

This is to certify that the project titled "Electronic card lock system" by Patel Chintan(EC-90) is a

bonafide work carried out by him during the 6th semester of their under graduate course in theElectronic & communication engineering under my guidance and supervision .

Prof. B.P.Patel Dr. N.J.Kothari

Project supervisor, Head,

Department of Department of

Electronics & Communication, Electronics & Communication,

Faculty of technology, Faculty of technology,

D.D.University,Nadiad. D.D.University,Nadiad.

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CERTIFICATE

This is to certify that the project titled "Electronic card lock system" by Parmar Vishal (EC-86) is

a bonafide work carried out by him during the 6th semester of their under graduate course in theElectronic & communication engineering under my guidance and supervision .

Prof. B.P.Patel Dr. N.J.Kothari

Project supervisor, Head,

Department of Department of

Electronics & Communication, Electronics & Communication,

Faculty of technology, Faculty of technology,

D.D.University,Nadiad. D.D.University,Nadiad.

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ABSTRACT

This project is of the field of automation. Automation means any function which is being

operated automatically on the base of some pre-defined condition. But here the different thing is thatoperation will be controlled by the sensor through its sensing ability.

The main function of this project is to provide protection to our system as well as automatically

on or off the appliances. The circuit consists of sensing device (photo diode), buffer (74LS244), relay

driver (ULN2003), relay (12V DPDT), micro-controller (89C51), resistor & capacitors.

When light is incident on to the photo diode, the transistors (BC-109) output goes high. This

high output is given to the input of buffer IC (74LS244-octal buffer).As we know the working of buffer IC,

it simply transfers the input to the output. The output of buffer is given to the micro-

controller(AT89c51) so the output of the controller is given to the LCD and Relay driver(ULN2003).So

according to the output, relay coil will be energize & our appliance gets turn on.

We can apply this project at home and industry automation for easy lifestyle and also in security

system.

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INDEX

SR.NO. TITLE PAGE NO.

1 Introduction 1

1.1 Definition of the project 1

1.2 Aim of project 2

2 Block diagram 3

2.1 Overview 4

3 Components 5

3.1 Components list 5

3.2 Description 6

3.3 Photo Diode 6

3.4 Transistor (BC 109) 7

3.5 Schmitt trigger buffer (74LS244) 7

3.6 Pin Diagram 8

3.7 Relay driver (ULN2003) 9

3.8 Pin Diagram 9

3.9 Relay (12V DPDT) 10

4 Circuit diagram 11

4.1 Operation 12

5 Project layout 13

5.1 Screen shot 14

6 Application & Advantages 15

7 Future scope 16

8 Conclusion 17

9 Bibliography 18