GSM Alarm Prajjwol Tripathi , Suresh Lama , Dibas Bhandari

Helsinki Metropolia University of Applied Sciences

Bachelor Degree

Degree Programme in Electronics

Embedded System Programming

30th DEC 2015

Contents

Introduction 1

Trello 2

System overview 3

1.1 Requirements 3

1.2 Hardware components. 4

1.2.1 GSM shield 4

1.2.2 Arduino Board 5

1.2.3 Keypad 5

1.2.4 LCD Display 6

1.2.5 PIR sensor 6

1.2.6 Buzzer 7

Rough Workflow 8

System Application 9

Programming 10

Project Difficulties 11

Conclusion 11

References 11

Introduction

Security has always

been a great challenge

everywhere, and as the

technology is upgrading

day by day so does the

security methods with it.

There are several tech-

nologies that are widely

used with the home se-

curity system but GSM

based wireless communication system is the most preferred one when talking about

intruder alarms and etc. The aim of this project is to provide security to the restricted

area even if the owner is anywhere in the world. For this purpose user can use any

type of Mobile. This way it overcomes the limited range of infrared and radio remote

controls.

Trello

To complete this project successfully a newly designed project management system

named trello was recommended ,it was a pretty interesting approach to work in a group

and update the statues every now and then through this system even though if you miss

the group meetings.

In this management system named trello we created a group and added

our teacher (also project manager) to this group where he can monitor all the happenings

and updates, so there we specified different tabs to describe our requirements, and up-

dates and topics that concerns the group.

System overview

1.1 Requirements

Our GSM security system prime goal is security through intrusion detection and

notification. It is based on smart security system where users can have comforts in-

stalling the security in any buildings and get the maximum security of user's property and

building. At the beginning we had few basic requirements and we decided to add more

on further research and discussion. At the same time, some features that we planned

did not go well and have to abort that feature. The following has listed all the require-

ments.

TAG

Number

RERQUIREMENT PRIORITY RATIONALE

HS.00 System shall detect any move-

ments in the room.

M to detect intrusion.

HS.01 Siren shall turn on after the intru-

sion.

M To alert the intruder.

HS.02 Automatic door lock shall be in-

cluded in the system.

M To lock the intruder inside the room.

HS.03 The system shall inform the owner

by sending SMS to the mobile.

M To inform the user or police.

HS.04 The system shall also call the own-

er's mobile.

O To inform the user or police.

HS.05 The alarm shall be controlled by

sending message to it.

O To turn device off or on.

HS.06 The system can be externally pow-

ered through batteries.

M Remote use.

HS.07 The system can be controlled by

more than one user.

W Multiple users.

HS.08 The system shall cover a large

area.

O To increase the effectiveness of sys-

tem.

HS.09 CCTV shall be included. W to confirm the intrusion and detect

the intruder.

HS.10 The display shall have a display. O To observe the status of alarm

1.2 Hardware components.

1.2.1 GSM shield

The Arduino GSM Shield connects arduino board to make the internet connection,

make/receive voice calls and send/receive SMS messages. The shield uses a radio mo-

dem M10 by Quectel. It is possible to communicate with the board using AT commands.

The GSM library has a large number of methods for communication with the shield.

Figure 1 Arduino GSM Shield

1.2.2 Arduino Board

The Arduino Uno R3 is a microcontroller

board based on a removable, dual-inline-

package (DIP) ATmega328 AVR micro-

controller. It has 20 digital input/output

pins (of which 6 can be used as PWM out-

puts and 6 can be used as analog inputs).

Programs can be loaded on to it from the easy-to-

use Arduino computer program. The Arduino has an extensive support community, which

makes it a very easy way to get started working with embedded electronics.

1.2.3 Keypad

.

This 12 button keypad is used to give inputs to

Arduino board.

Figure 2 Arduino Board

Figure 3 Keypad

Figure 4 one wired keypad schematic dia-gram

1.2.4 LCD Display

The Liquid Crystal library allows you to

control LCD displays that are compati-

ble with the Hitachi HD44780 driver.

There are many of them out there, and

you can usually tell them by the 16-pin

interface.

Standard HD44780 LCDs are useful for

creating standalone projects.

16 characters wide, 2 rows

White text on blue background

Connection port is 0.1" pitch, sin-

gle row for easy bread boarding and

wiring

By using simple i2c and SPI input/output expanders we have reduced the number of pins

(only 2 pins are needed for i2c) while still making it easy to interface with the LCD

1.2.5 PIR sensor

A passive infrared sensor (PIR sensor) is an electronic

sensor that measures infrared (IR) light radiating from

objects in its field of view. They are most often used in

PIR-based motion detectors

Figure 5 LCD Dispaly

Figure 6 Passive Infrared Sensor

1.2.6 Buzzer

An audio signaling device

Figure 7 Buzzer or Beeper

Rough Workflow

GSM

SHIELD

Intrusion detected

Keypad to enter

password

Intruder in room Alert to owner

Pir Sensor detecting

motion

Security alarm

System Application

This project uses the Arduino as main microcontroller board and Global System for Mo-

bile communication (GSM)

technology for reporting

any suspicious movements

in the room and intrusion

detector unit. One can use

any other Micro controller

board or develop PCB

board using any microcon-

troller like 8051. This sys-

tem can be operated in

home, office or depart-

mental stores.

The system has keypad ac-

tivation or SMS activation

procedure in order to turn

on the device. The system

shall have a external power

supply so as to make it mo-

bile. The LCD display shows the status of Alarm. In or-

der to activate system, user shall can either give pass-

words through keypad or send SMS in case of absence to change the status of system.

In case of three false attempts, the alarm will be turned on and userill be reported of

Break In.

The GSM shied or GSM/GPRS modem has SIM that uses the local network to com-

municate with user. When any movement is detected with in the specified range that

can be altered, Alarm will be activated and continuously played . At the same time,

warning message will be sent by system to owner mobile phone followed by call. The

Alarm can be turned off only after owner send message to turned off or correct pass-

word is entered in the system.

In order to make the project, we have devised an idea to include online surveillance

system where system will send the image at first intrusion to the owner to confirm the

intrusion. Only after the confirmation of the intrusion the owner shall take necessary ac-

tion like calling the police or lock the door and building.

Figure 8 Working Prototype

Programming

We used c++ as a programming language and Arduino’s custom programmingenviron

ment called Arduino Ide to interface the code with the device.

For more information on the programming part we have created a separate ”code box”

for the programming part.

..\Desktop\Code Box.pdf

Figure 9 Arduino IDE

Project Difficulties

As of working on a group project managing the meetings were difficult due to personal

timing mismatch.

Late arrival of GSM Board

Confusions with the GSM Programming

Memory issues with the web camera installation

Errors with the GSM Calling

Issues with GSM Shield external power supply

Conclusion

Overall the project was successfully completed, though everything went pretty smooth

we faced few problems mentioned above. Project demonstration or presentation also

went pretty good end result was a fine working GSM alarm based on PIR Sensor proto-

type.

References

https://www.arduino.cc/

https://github.com

https://www.arduino.cc/en/Main/ArduinoGSMShield