ABSTRACT
The intruder alarm system was designed
and build in order to let the industrial and commercial company know how
important alarm system is all about. These can be of Good help if the intruder
will look through this project and support for the development of this project
as to let the Federal Government know that the young engineering of today can
produce (construct) things that will help the economic and growth in developing
this country is technology
The
intruder alarm system uses electric component to achieve the alarm sound, these
components are integrated circuit (ICI,) Register, capacitors and speaker which
when combined together it give an alarm system that can be used in houses,
industry and commercial company. And how it can be operated. This project does
a long way to give evidence and show that it can be use in the economic in
favour of electronics and its usefulness in our present life days. WE suggest
that this our project should be looked into by the school administration to see
the possibilities of producing this alarm system in a commercial has been made
by so doing we will help encourage our nations policy indigenous technology
TABLE OF CONTENTS
Title
Page
Approval Page
Dedication
Acknowledgement
Abstract
Table
of Contents
CHAPTER ONE
1.1
Introduction
CHAPTER TWO
2.1
Block Diagram Circuit Implementation of Proposal
Intruder Alarm Unit
2.2 Power Supply Section (Alternating Current)
2.3 Rectification
2.4 Regulated Power Supply
CHAPTER THREE
3.1
Application of 555 Timing Circuit
3.2
Monostable or One Short and Astable Mode
3.3
Alarm Section
3.4
Application
3.5
Audio Amplifier
1.6
Amplifier Coupling
1.7
Amplifier Section
Complete
Circuit
CHAPTER FOUR
4.1
Loved Speaker
4.2
Basic Moving Coil Loved Speaker
CHAPTER FIVE
5.1
Construction of an Intruder Alarm System
5.2
System Construction
5.3
Function of the Component
5.4
Operation of the System
CHAPTER SIX
6.1
Recommendation/Conclusion
6.2
Conclusion
6.3
Reference.
CHAPTER ONE
INTRODUCTION
As the
world is developing the need for electronics in human endevour is now taking a lager scope. With the inventions of
certain electronic gadgets in our society today. Certain activities become
easily handed for example; in communication when the telephone plays a path. In
places where safety is needed on alarm system will be of much important. The
application of electronic in this modern age is simply inexhaustible and this
group take more interest in the case of burglary in homes, cars and industry.
The selection of a proper alarm is not a simple matter, because the need of
each individual home owner or businessman is different like a set of finger
prints.
Some factors and questions which must
be answered when selecting an alarm system includes:
a)
What system needed to be protected?.
b)
What type of senior are needed?.
c)
The method of transmission needed forth alarm signal.
The purpose
of producing the alarm system is to limit the effect of the criminology in the
society by informing us that our properties are in danger. All these will bring
alarm the way by which criminal break into private properties by scaring them
away once the alarm is trigger on. The type of alarm system been built is
called INTRUDER ALARM SYSTEM and it is simple but effective alarm circuit which
can reset its self after a time that which have been selected. It has normally
closed and normally open triggers which make this door as a switch so as to
triggers. It on a 555 timer so that alarm will reset itself after a certain
amount of time. The time is varied according to the resister and capacitor been
used in the circuit. The alarm has a switch, which we can replace with a key
switch to make it more secure and we can change the trigger to other top of the
door or window sluitchep too. The alarm uses relay, which is connected to a
siren (speaker) but it can be replaced with speaker. The circuit is running off
12volts but can be range from 4 – 16volts.
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