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Design And Implementation Of Password Basedaccess Control With Intruder Alert System
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CHAPTER ONE
INTRODUCTION
1.1 Background study
Traditional lock
systems using mechanical lock and key mechanism are being replaced by
new advanced techniques of locking system. These techniques are an
integration of mechanical and electronic devices and highly intelligent.
One of the prominent features of these innovative lock systems is their
simplicity and high efficiency.
Such an automatic lock system
consists of electronic control assembly which controls the output load
through a password. This output load can be a motor or a lamp or any
other mechanical/electrical load.
An electronic lock (or electric
lock) is a locking device which operates by means of electric current.
Electric locks are sometimes stand-alone with an electronic control
assembly mounted directly to the lock. Electric locks may be connected
to an access control system, the advantages of which include: key
control, where keys can be added and removed without re-keying the lock
cylinder; fine access control, where time and place are factors; and
transaction logging, where activity is recorded. Electronic locks can
also be remotely monitored and controlled, both to lock and unlock.
Many
times we forgot to carry the key of our home. Or sometimes we come out
of our home and door latch closes by mistake. In these cases it is
really difficult to get inside the house. This project is designed to
solve this purpose. Main concept behind this project is of a door-latch
opening using a password entered through keypad. As well as turning on
the Buzzer when password is entered wrong for multiple times. User can
change this password anytime he/she wish using a keypad.
Here we
develop an electronic code lock system using 8051 microcontroller, which
provides control to the actuating the load. It is a simple embedded
system with input from the keyboard and the output being actuated
accordingly.
This system demonstrates a password based door lock
system wherein once the correct code or password is entered, the door is
opened and the concerned person is allowed access to the secured area.
Again if another person arrives it will ask to enter the password. If
the password is wrong then door would remain closed, denying the access
to the person.
The main component in the circuit is 8051 controller.
In this project 4×3 keypad is used to enter the password. The password
which is entered is compared with the predefined password. If the
entered password is correct then the system opens the door by rotating
door motor and displays the status of door on LCD. If the password is
wrong then door is remain closed and displays “pwd is wrong†on LCD.
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ABSRACT - [ Total Page(s): 1 ]The necessity of a low cost electronic home security system designed in co-ordination with other security measures is always there in our society to reduce the risk of home intrusion. Keeping this problem in mind, we are working on a project on automatic password based control system which is technology is based on access control system. We want to utilize the electronic technology to build an integrated and fully customized home security system at a reasonable cost.This is the design and constr ... Continue reading---
