Password Based Door Locking System

fiercebunΗλεκτρονική - Συσκευές

2 Νοε 2013 (πριν από 3 χρόνια και 8 μήνες)

53 εμφανίσεις

Password Based Door Locking System





Aim
:
The main objective of this project is to implement a
n

Pass word Based Door
Locking System Using AT89c51 Microcontroller.



Project Description:


Security is a prime concern in our day
-
today life. Everyone wants
to be as much secure as
possible. An access control for doors forms a vital link in a security chain. The
microcontroller based Door locker is an access control system that allows only authorized
persons to access a restricted area. The system is fully con
trolled by the 8 bit
microcontroller AT89C51 which has a 2Kbytes of ROM for the program memory. The
password is stored in the EPROM so that we can change it at any time.


The system has a Keypad by which the password can be entered through it. When the
ent
ered password equals with the password stored in the memory then the
Stepper motor
rotate forward side
so that the door is opened. If we entered a wrong password for more
than three times then the Alarm is switched on. When we go inside and come back then
the microcontroller will sense the person using the
IR
, the microcontroller will
automatically open the door for you.


The default password is 1111 and you can change the password by dialing
1234, old
password,
and new

password #button
. for example if you
want to change the password
from the default to 4523 then dial 123411114523# after dialing you can hear a beep
sound which

confirm the operation goes successful.





Block Diagram:











AT89C51


Microcontroller


LCD




Stepper Motor


Mot
or Driver




Keypad




Buzzer



Hardware requirements:




AT89c51 Microcontroller



LCD



Stepper

motor



Keypad



ULN2003 Motor Driver



5V Buzzer




Software used
:




Embedded C



KEIL Demo Version with Simulator



Applications Areas:





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