DESIGN AND CONSTRUCTION OF SOUND DETECTOR WITH ALARM SYSTEM
By
NWADNUMA BENJAMIN U EE/H2003/106
Presented To
Department of Electrical/Electronic Engineering
ABSTRACT
This project is design and construction of a sound detector with alarm system was done primarily to detector sound. It can be use in industrial and domestics. It employ four discreet stages with power supply which power the system.
The 1st block is pick up amplifier containing the microphone and the input which serve as a transformer which the function is to pick up the smallest sound that comes close to the amplifier
The second block is comparator with hysterias. The function as analogue to digital convector and also it help to accumulate amparm sound like sound of the gun short or any other heavy sound
Block three. This is transistor switching this stage consist three bipolar function transistor (BJI) with a decay circuit found using capacitor time constant (T – RC) with a 12v Re let, it output work function is to switch the alarm circuit.
Block four. This is the Alarm circuit, it’s function is the alarm tone. It is an stable mutivibertor that produce 1kH2 tone frequencies which sound as alarm signal with loud speaker which serves as an output transformer.
TABLE OF CONTENT
Title page
Approval page
Dedication
Acknowledgement
Abstract
Table of contents
CHAPTER ONE
INTRODUCTION
1.1 General description of project
1.2 Design objectives
1.3 Significance of the project
1.4 The report layout
CHAPTER TOW
LITERATURE REVIEW
2.1 Historical background of the project
2.2 Theories and models relevant to the design
2.3 List and description of the system component
2.4 Distinction between the existing method of design and the new approach.
CHAPTER THREE
SYSTEM DESIGN
3.1 Description of the system building blocks
3.2 System design specification
3.3 Block diagram of the system
3.4 Description of the overall operation of the system
3.5 Component list
3.6 Complete circuit diagram of sound detector with alarm system.
CHAPTER FOUR
Implementation testing and results
CHAPTER FIVE
Cost analysis conclusion and recommendation
REFERENCE.
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