30-08-2014, 01:14 PM
A Digital Security System with Door Lock System Using RFID Technology
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ABSTRACT
RFID, Radio Frequency Identification is an inexpensive
technology, can be implemented for several applications such as
security, asset tracking, people tracking, inventory detection,
access control applications. The main objective of this paper is to
design and implement a digital security system which can deploy
in secured zone where only authentic person can be entered. We
implemented a security system containing door locking system
using passive type of RFID which can activate, authenticate, and
validate the user and unlock the door in real time for secure
access. The advantage of using passive RFID is that it functions
without a battery and passive tags are lighter and are less
expensive than the active tags. A centralized system manages the
controlling, transaction and operation task. The door locking
system functions in real time as the door open quickly when user
put their tag in contact of reader. The system also creates a log
containing check-in and check-out of each user along with basic
information of user.
INTRODUCTION
RFID, Radio Frequency Identification is a fundamental and
inexpensive technology that enables wireless data transmission
[1]. This technology has not been very often used in industry due
to lack of standardization among the manufacturing companies
earlier. RFID technologies are efficient [2] and secure compare to
other network [3]. With RFID, wireless automatic identification
takes a very specific form: the object, location, or individual is
marked with a unique identifier code contained with an RFID tag,
which is in some way attached to or embedded in the target [6].
RFID is not a single product but a comprehensive system, a
typical RFID system include three basic elements: RFID tag
(transponder), reader (transceiver) and back-end application
system (or database), which demands the support of the computer
network. The software is used for management, controlling,
transaction, operation and maintaining record of the various users.
A digital door locking system is also implemented and governed
by RFID reader which authenticate and validate the user and open
the door automatically. It also keeps the record of check-in and
check-out of the user. It’s very important to authenticate the user
before entering into a secure space and RFID provide this
solution. The system enables user to check-in and check-out under
fast, secure and convenient conditions. The system include door
PROPOSED STRUCTURE AND DESIGN OF THE SYSTEM
In this study, we proposed a security system contains door locking
system using passive type of rfid. The system is implemented in
three spaces using central database system. The secure space
located on same or different part of buildings as illustrate in
figure1. The system used hardware as well as software. The
hardware components are RFID reader, tags, USB connections
and connecting cables etc. In addition we have used actuator
(stepper motor for this purpose). The proposed scheme is showing
in figure2.
The detail of the proposed scheme is showing below:
Step 1: The RFID reader retrieve the information contains by tag
as it come in the range of few millimeters from reader.
WORKING OF THE SYSTEM
The system stores all the necessary information about the user. A
new user is first registered with the system and the corresponding
information is burn in RFID tag. This RFID tag will be accessible
through the system. When a registered user comes to the entry
point, and put the tag into reader, the system checks whether it is
registered user or imposter. If the user is registered one then the
tab information is matched with the user information stored in
system. The door is open to entry of the user after successful
authentication and close automatically after a specified time
interval. The check-in information is also stored in the database
with date and time. A log is also generated by the system
according to check-in information. User check-in process is
depicted in figure 3. Card detection setting is shown in figure 4.
Database search is illustrated in figure 5 and output of database
entry is illustrated in figure
DISCUSSION AND RESULT
The system has a controller PC which contains the record of the
check-in and check-out of the user. User must have RFID tag
which contains the personal information of that particular user. A
door along with locking system is driven by stepper motor.
Stepper motor acts as actuator, which is able to open and close the
door in real-time. The RFID Reader detects tag in real-time and
open door automatically and closes it again after a specific time
interval. In this application, user authentication information is
searched on the database first. If the user does not have any
previous record registered to the database, the door will not be
open thus unauthorized entries will be avoided.
CONCLUSION
In this study, we have implemented a digital security system
contains door lock system using passive RFID. A centralized
system is being deployed for controlling and transaction
operations. The door locking system functions in real time as
when the user put the tag in contact with the reader, the door open
and the check-in information is stored in central server along with
basic information of the user. We utilize RFID technology to
provide solution for secure access of a space while keeping record
of the user.