This nice presentation on access control system.

1. A PRESENTATION ON
ACCESS CONTROL
SYSTEM
PREPARED BY:
Mody Devansh D. (06-ECG-03)
Kukadia Pritesh M. (06-ECG-22)
GROUP NO:8
INTERNAL GUIDE:
Mr. J.N. PATEL
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2. LIST OF CONTENTS
 Introduction of Project
 Block Diagram
 Circuit Diagram
 Component Details
 Working of circuit
 Flow chart
 Software details
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3. INTRODUCTION OF PROJECT
Now a days, a problem of security is very much important everywhere
in the world. So, in large firms or companies, to make protect of
entering of unauthorized person or to secure their important section,
they generally use this type of security.
This project, AN ACCESS CONTROL SYSTEM provides a facility of
security. This type of security lock is generally attached at the main
entrance door of the firms. By using this type of security, only
authorized fellow can enter.
 It is quite easy in installation and use. Through this, one can allocate
more number of passwords to many fellows. It is easy to use as the
fellow don’t need to carry any type of id card or chip etc.
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4. BLOCK DIAGRAM AND DESCRIPTION
ELECTRICAL LOAD
LOADS DRIVER
KEYPAD
8051
ALARM ALARM
DRIVER
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5.  First of all a user enters a password by a hex
keypad.
 Micro controller checks password and then gives
according output.
 If the password is correct then it opens the door.
 If the password is wrong then it gives output to
the alarm.
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6. CIRCUIT DIAGRAM AND DESCRIPTION
LCD
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7.  When the power supply is switched on, then the
whole circuit starts working.
 Then in LCD, the name of company is displayed
and the person is asked to enter the password.
The password is entered through a hex keypad.
The microcontroller compares that password with
the already saved database of employee's
information.
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8. If it matches with any of the saved password, then
microcontroller gives output to the LCD.
Then in LCD, the name of employee, his
department, his employee number, etc are displayed.
Parallel, the microcontroller gives output to the DC
motor to open the door.
If the password doesn’t match with any password
three times, then microcontroller displays in LCD that
your password is wrong, and it gives output to the
buzzer.
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9. COMPONENT DETAILS
SR NAME SR NAME
NO. NO.
1 MICRO CONTROLLER (AT89S52) 16 ON/OFF SWITCH
2 16×2 LCD 17 LED
3 HEX KEYPAD 18 PRESET(4k7)
4 MICROCONTROLLER COMPATIBLE PCB 19 1000uF/25V CAPACITOR
5 DC MOTOR 20 0.1uF CAPACITOR
6 DC 2NO-NC RELAY(12V) 21 10uF CAPACITOR
7 DC RELAY(5V) 22 33pF CAPACITOR
8 7805 IC 23 5V BUZZER
9 BUG STRIP 24 10Ω RESISTER
10 RESISTER ARRAY 25 1KΩ RESISTER
11 CRYSTAL OSSCILATOR 26 10KΩ RESISTER
12 BRIDGE RECTIFIER 27 CONNECTING WIRES
13 40 PIN CONNECTOR 28 DC SOCKET
14 HEAT SINK 29 SMALL GPB
15 10 PIN CONNECTOR CABLE
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10. MAIN PCB
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11. WHY HEX KEYPAD?
A general 3×2 matrix
keypad contains only
0-9 keys.
Whereas a hex keypad
contains 0-9 keys and also it
contains A,B,C,D,E,F keys.
So it provides more
number of combination of
Passwords to the firms.
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12. POWER SUPPLY SECTION
A supply is given from 230v AC through a 12v adepter.
Then it is given to the bridge rectifier. The output of
rectifier is given to voltage regulator IC through filter
capacitors. 12/15

13. SOFTWARE DETAILS
KEIL µ VISION 3.0.3.
KEIL SOFTWARE IS USED TO PROVIDE YOU WITH SOFTWARE
DEVELOPMENT TOOLS FOR 8051 BASED MC. WITH THE KEIL TOOLS YOU
CAN GENERATE EMBEDDED APP FOR VIRTUALLY EVERY 8051
DERIVATIVE.
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14. START
READ
KEYPAD
CHECK
PASSWORD
SWITCH ON
DEVICE
CHECK IF WRONG
PASSWORD WAS
ENTERED THREE
TIMES
SWITCH OFF
SWITCH ON ALARM
ALARM
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15. THANK YOU
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