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Product Category: Projects

Product Code: 00001090

No of Pages: 48

No of Chapters: 5

File Format: Microsoft Word

Price :



Automatic Smoke and Burglar alarm systems are intended to notify the building occupants to evacuate in the event of a fire , Call, and send Telephone messages to report the event to an off-premises location in. order to summon emergency services, and to prepare the structure and associated systems to control the spread of fire. A key aspect of fire protection is to identify a developing fire emergency in a timely manner, and to alert the building’s occupants and fire emergency organizations.



Title Page

Letter of submission




Table of Contents


1.1 Introduction

1.2 Project Objectives

1.3 Alarm System General Overview

1.3.1 Sensors

1.3.2 Alerting Devices

1.3.3 Keypads

1.3.4 Security Devices


2.1 Smoke and Burglar with Auto Dialer Components

2.1.1 Crystal Oscillator

2.1.2 1N4007 Diode

2.1.3 Electrolytic Decoupling Capacitor

2.1.3 Electrolytic Decoupling Capacitor

2.1.4 7805 Voltage Regulator

2.1.5 Passive Infrared Detector

2.1.6 Smoke Detector

2.1.7 GSM Dialer

2.1.8 Main Fire Alarm Control (Panel)


3.0 System Operation

3.1 Structure and Flow Chart

3.2 Circuit Operation

3.3 Phone Programming On the Microcontroller

3.4 Challenges Encountered and Solution Provided In This Product


4.0 Conclusion

4.1 Recommendation References



A Security Alarm is a system designed to detect intrusion-unauthorized entry-into a building or area. Security alarms are used in residential, commercial, industrial, and military properties for protection against burglary (theft) or property damage, as well as personal protection against intruders. Car alarms likewise protect vehicles and their contents. Prisons also use security systems for control of inmates, Also fire alarm systems having hard wire layout and normally opened warning devices like heat detector and smoke detector.

Some alarm systems {2J serve a single purpose of burglary protection; combination systems provide both fire and intrusion protection. Intrusion alarm systems may also be combined with closed-circuit television surveillance systems to automatically record the activities of intruders, and may interface to access control systems for electrically locked doors. Systems range from small, self-contained noisemakers, to complicated, multi-area systems with computer monitoring and control.

There this Project Focus on the combination of Smoke Detection in the early stage of Fire and Burglar protection should there be any intruder with the help of G-SM Dialer to notify the house/office management in advent of either case which is achieved through connection between warning devices and personal computer are dealt with microcontroller we Automatic Smoke and Burglar alarm systems are intended to notify the building occupants to evacuate in the event of fire or other emergency, report the event to an off-premises location in order to summon emergency services, and to prepare the structure and associated systems to control the spared of fire A key of fire protection is identifying a developing fire emergency in timely manner, and to alert the building’s occupant and fire emergency organizations.


a.     Detect smoke before fire outbreak

b.     Detect any form of unauthorized Intrusion into an area

c.     Sound alarm to alert within organization safety personnel and security personnel.

d.     Dial pre-assigned Telephone numbers to alert the situation i.e. occupant of the area whether far or near, Fire lighter and the neighbouring Security office (Police Station, Vigilante, etc.)


The most basic alarm consists of one or more sensors to detect intruders, and an alerting device to indicate the intrusion. However, a typical premises security alarm employs the following components:

Premises control unit (PCU), or panel: The brain” of the system, it reads sensor inputs, tracks arm/disarm status, and signals intrusions. In modern systems, this is typically one or niore computer circuit boards inside a metal enclosure, along with a power supply.

1.3.1 SENSORS: Devices which detect intrusions. Sensors maybe placed at the perimeter of the protected area, within it, or both. Sensors can detect intruders by a variety of methods, such as monitoring doors and windows for opening, or by monitoring unoccupied interiors for motions, sound, vibration, or other disturbances.

1.3.2 ALERTING DEVICES: These indicate an alarm condition. Most commonly, these are bells, sirens, and/or flashing lights. Alerting devices serve the dual purposes of warning occupants of intrusion, and potentially scaring off burglars.

1.3.3 KEYPADS: Small devices, typically wail-mounted, which function as the human-machine interface to the system. In addition to buttons, keypads typically feature indicator lights, a small mulch-character display, or both.

Interconnections between components. This may consist of direct wiring to the control unit, or wireless links with local power supplies.

1.3.4 SECURITY DEVICES: Devices to detect thieves such as spotlights, cameras & lasers.

In addition to the system itself, security alarms are often coupled with a monitoring service. In the event of an alarm, the premises control unit contacts a central monitoring station. Operators at the station see the signal and take appropriate action, such as contacting property owners, notifying police, or dispatching private security forces. Such signals may be transmitted via dedicated alarm circuits, telephone lines, or Internet.

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