automobile thefts and the production of vehicle are increasing in yearly world.
So, vehicle theft is a universal problem. To solve this problem, most of the vehicle owners
have started using the theft protection systems.
The main purpose of this paper is to prevent the vehicle theft and the functionality
is achieved by detecting vehicle status in theft mode and by sending an SMS is generated
automatically. This SMS is then sent to the owner of the vehicle. The owner can
then send back the SMS in order to disable the ignition of the vehicle. Thus in
this way crimes can be reduced to a great extent as vehicles today are being stolen in large number. Hence, the
vehicles today require high security which can be
achieved with the help of
this application that how
the system works is when a person tries to steal the vehicle, the
microcontroller in it is interrupted
and the command
is sent to the
GSM modem to send SMS. On the receipt of the message, the owner sends
back the SMS to the GSM modem. This is done in order to stop the engine. This
GSM modem is interfaced to the micro controller. This microcontroller on the receipt
of the message uses a mechanism that helps to stop engine. Motor is being used to
indicate vehicle ON/OFF state.
Keywords: GSM modem, voltage regulation, micro controller.
everyone in this competitive world prefers to make the things easy and simple
to handle, this project sets an example to some extent. In this paper we deal
with the security of the vehicle. Whenever the GSM modem receives the message
from the particular mobile then the car engine gets stopped. The mobile number
from which the message is being sent should be the authorized mobile number. Nearly
99 per cent of the processors manufactured end up in embedded systems. The
embedded system market is one of the highest growth areas as these systems are
used in very market segment- consumer electronics, office automation,
industrial automation, biomedical engineering, wireless communication, data
communication, telecommunications, transportation, military and so on. An
embedded system can be defined as a computing device that does a specific
focused job. Appliances such as the air-conditioner, VCD player, DVD player,
printer, fax machine, mobile phone etc. are examples of embedded systems. Each
of these appliances will have a processor and special hardware to meet the
specific requirement of the application along with the embedded software that
is executed by the processor for meeting that specific requirement. The
embedded software is also called “firm ware”. The desktop/laptop computer is a
general purpose computer.
2. Proposed Method
are using the
manufacturer security alarm only. The thief had an experience
regarding this security alarm, which means their work
is getting easier to steal
the car because they had
well known about the alarm circuit. They know when the time to cut off the alarm and had well known about the system. So, it is important to
double protect the security of the vehicle. Antitheft security
system utilizes an embedded system design with
Dual Tone Multi Frequency
(DTMF) and a GSM to
monitor and safeguard a vehicle. It secures the vehicle
against theft. Upon activation, it automatically demobilizes the vehicle by
disconnecting the ignition key supply from the car battery. This now makes it impossible for
anybody to starts the vehicle, let alone
moving with it. In an attempt of theft
through the vehicle doors or
boot, the system sends
text message to the vehicle owner
and at the same time starts up an alarm. This design popped out
due to the
increasing rate at
which packed vehicles
are stolen especially in our
country, but with this design this packed vehicle is being monitor red
irrespective of where it is packed,
provided there is GSM network
coverage. From the research conducted, it was found
out that majority
of the existing vehicle security system uses only
alarm, and doesn’t send
text message to the vehicle
owner let alone of
demobilizing the vehicle. But
with the use of GSM network, the owner
is guaranteed that the vehicle
will send text
message to his phone, and at the same time, have people around alerted
of what is happening.
automobile thefts are increasing and also the production of vehicle also increasing in yearly world. So, vehicle theft
is a universal problem .To solve this
problem, most of the vehicle owners have
started using the theft protection systems nowadays.
A wireless vehicle security system which
implements the mobile
communication protocol is used. The most
known existing car security system is car alarm and has a lot
The block diagram for vehicle theft
detection system by using GSM is as shown in the Fig.1 and 2.
Global System for Mobile (GSM)
is a second generation cellular standard developed to cater voice services and
data delivery using digital modulation.Cellular is the
one of the fastest
growing and it is the most demanding telecommunications applications. Cellular
systems using a digital technology will become
the universal method of tele-communications.
Short message service is a mechanism of
delivery of short messages over the mobile networks. It is a store and forward
way of transmitting messages to and from mobiles. The message (text only) from
the sending mobile is stored in a central short message center (SMS) which then
forwards it to the destination mobile. This means that in the case that the
recipient is not available, the short message is stored and can be sent later.
Each short message can be no
longer than 160 characters. These characters can be text (alphanumeric) or
binary Non-Text Short messages. An interesting feature of SMS is return
receipts. This means that the sender, if wishes, can get a small message
notifying if the short message was delivered to the intended recipient.
Since SMS used signaling channel as opposed to dedicated channels, these
messages can be sent/received simultaneously with the voice/data/fax service
over a GSM network. SMS supports national and international roaming. This means
that you can send short messages to any other GSM mobile user around the world.
With the PCS networks based on all the three technologies, GSM, CDMA and TDMA
supporting SMS, SMS is more or less a universal mobile data service.
The SMC (Short Message Center) is the entity which does the job of store
and forward of messages to and from the mobile station. The SME (Short Message
Entity) which can be located in the fixed network or a mobile station, receives
and sends short messages.
The SMS GMSC (SMS gateway MSC) is a gateway MSC that can also receive
short messages. The gateway MSC is a mobile network’s point of contact with
other networks. On receiving the short message from the short message center,
GMSC uses the SS7 network to interrogate the current position of the mobile
station form the HLR, the home location register.
HLR is the main database in a mobile network. It holds information of the
subscription profile of the mobile and also about the routing information for
the subscriber, i.e. the area (covered by a MSC) where the mobile is currently
situated. The GMSC is thus able to pass on the message to the correct MSC.
MSC (Mobile Switching Center) is the entity in a GSM network which does
the job of switching connections between mobile stations or between mobile
stations and the fixed network.
A VLR (Visitor Location Register) corresponds to each MSC and contains
temporary information about the mobile, information like mobile identification
and the cell (or a group of cells) where the mobile is currently situated.
Using information from the VLR the MSC is able to switch the information (short
message) to the corresponding BSS (Base Station System, BSC + BTSs), which
transmits the short message to the mobile.
The BSS consists of transceivers,
which send and receive information over the air interface, to and from the
mobile station. This information is passed over the signaling channels so the
mobile can receive messages even if a voice or data call is going on.
2.1 Working of
vehicle theft DETECTION BY GSM
includes the various important blocks of system are:
1) Vibration Sensor: It is a kind of Piezoelectric sensor. It detects the amount of vibration,
compares it with threshold level set by user and gives high pulse at its
output. We have used Digital output vibration sensor.
2) Ignition Lock: This is used to identify that owner has left the vehicle.
Any action after key removal will be
considered as invalid access to the vehicle.
3) Microcontroller: We have used 8051 series
Microcontroller, AT89S52. 8051 communicates with sensor, ignition key, LCD display, GPS modem and
4) LCD display: This is non-mandatory component of the circuit. However it is important part while
developing the project.
6) GSM Modem: Microcontroller sends AT commands to the GSM modem. Then GSM
modem sends SMS.
7) Buzzer: This will be turned on when Vibrations are detected.
system installed in the engine of the vehicle along with the
GSM modem. By entering a correct password the instrument allows to activate the
12v relay and then ignition of the engine will start. Hence starts the vehicle. If anyone
tries to access the vehicles
password or theft the vehicle , then
the MCU will block the entry of further password. Then the buzzer will turned on to create a noise to panic the culprit, followed by sending a message “Alert: Car Is Under
Threat” through GSM modem to the owner’s mobile for further action for prevention of his vehicle. According to the prototype
model after entering correct password the Fan
will move and at the same time, according to the instruction it
will run forward for 10 sec and backward for10 sec like
an automobile. Password can be c hanged by the following proper procedure. First
enter # , then enter the old password , then new password. Now test, whether the new
is working or not. As per algorithm given below the new password will retain even after power failure.
So it will work as usual. The source code is written in the embedded C language. To develop the
source code the flow chart of the project is shown in the figure below 3.1. RESULTS AND DISCUSSIONS This GSM based vehicle theft control system retrieves vehicle status is whether
it is in theft
mode. This data is
fed to the microcontroller, which is interfaced to a GSM modem. The microcontroller generates the
vibrations and sends an SMS to
the concerned authority over GSM modem on
periodical interv alls which is set by the user.
An LCD display is connected to the
microcontroller for crossing the data received before being
sent over GSM. This project will be very
useful to people to
keep track of their vehicles. Further,
this project can be developed by making an arrangement
to stop the ignition of the vehicle by the owner remotely by sending an SMS in theft
consists of an ARM
Controller, Relay circuit, GSM Module and LCD
Display are interfaced
on a single board
and embedded on single board which is
embedded to a
vehicle as a control unit. The relay is connected to the
Vehicle Engine Unit of the Automobile When “OFF” message sent by the
owner of the vehicle to the mobile embedded in the control unit, the controller displays
the message in the
LCD as shown in the Fig.4.and invokes
the relay that is connected to the vehicle engine which
will stop fuel flow thus
locking the vehicle engine.
when “ON” message sent by the owner
of the vehicle to the mobile embedded in
the control unit, the controller
displays the message in the LCD as
shown in the Fig.5 and invokes the relay
connected to the vehicle engine which will
in turn allows the fuel flow
by unlocking the vehicle engine
In this paper we
have studied and implemented a complete working model using a Microcontroller.
Using this project, one can control his vehicle’s car engine by means of an
SMS. The main purpose of this paper is
to prevent vehicle theft. This functionality is achieved by detecting vehicle
status in theft mode and by sending an sms which is generated automatically.
This sms is then sent to the owner of the vehicle .The owner can then sent back
the sms in order to disable the ignition of the vehicle.
Thus in this way
crimes can be reduced to a great extent as vehicles today are being stolen in
large number. Hence, vehicles today require high security which can be achieved
with the help of this application.
5 Future scope
enhancement can be done to this paper by
using a GPS
system that helps to find
out the exact position of the vehicle with the help of its latitude and longitude which then can be sent to the owner of the vehicle via SMS. This data can be then entered by the owner on Google
map to find out the
exact location of the vehicle. There are many Applications of GPS based Vehicle theft
detection system using GSM technology, few
of them are
listed below:GPS Car theft detection can be used in
transportation vehicles of Companies, schools, colleges and industries. This
work can be used in our cars
and even in bikes.
1 B.G. Nagaraja, Ravi Rayappa, M.
Mahesh, Chandrasekhar M. Patil, Dr. T.C. Manjunath, “Design & Development of a GSM Based
Vehicle Theft Control System ” 978-0-76953516-6/08©2008
IEEE, DOI 10.1109 /ICACC.2009.154, pp.148-152.
2 M. A. Mazidi, “The 8051 Microcontroller & Embedded Systems”, Pearson Education Asia, India, 2nd edition, 2008.
Kenneth J. Ayala, “The 8051
micro-controller Architecture, programming & applications”, Penram
International, India, 1996.
4 Raj Kamal, “Embedded System-
Architecture, Programming and Design”, Tata McGraw Hill Publisher, 2nd edition,
Myke PREDCO, “PROGRAMMING and customizing 8051 microcontroller”, Tata McGraw Hill Publisher.
6 Toshiba’s 1993 “NAND Flash
Applications Design Guide”.
Mill man & Garble, “Combinatorial
Digital Circuits” and “Sequential
Digital Circuits” of, Microelectronics, 2nd edition.
National motor vehicle theft reduction conference 2000, Conference Papers (Australia).
Stolen and Wrecked Vehicles Monitoring Program, CCMTA June 1994 (Canada).
10 CCMTA Best Practice Models for Combating
Auto Theft, Version 6.1, Oct. 2006, Anti Auto Theft Project Group.