User Guide before placing order for complete project topics and materials:

It is important that the researcher knows exactly what he is go to do so that I could be done effectively.Make sure you update any research work you purchased on our website. Do not copy word for word. Using our research is legal. Our aim is to provide project topics and materials for easy access to information and to reduce stress of moving from one book stop or library to another in the name of sourcing for one research textbook or research materials. We do not encourage any form of plagiarism. Our aim is to generate research project ideas for students. The contents of the project material provide will help students to generate new ideals. Every researcher must look around him in his immediate environment and beyond to improve the work. To order the below complete project materials, Make payment deposit or cash transfer into any of the following banks:

GTBANK

Account Name: Chi E-Concept Intl, Account Number: 0115939447

Other payment options

We accept cash deposit, cash transfer and Bitcoin.

Click on download to complete your order.Call or Whatsapp +23408063386834

CLICK HERE TO CHAT WITH OUR CUSTOMER SUPPORT TEAM ON WHATSAPP

DESIGN AND CONSTRUCTION OF SOUND DETECTOR WITH ALARM SYSTEM

 

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.

 

CHAPTER ONE

INTRODUCTION

1.1     THE GENERAL DESCRIPTION OF PROJECT

 

          Due to advance electron logy in the electronic which gave rise to automation of electronic system in domestic and industrial use. This development is what gave me the courage to choose a project topic on sound detector with alarm system. This system employ four discreet stages with power supply namely, the pick up microphone, Amplifier, Schmih trigger, thysistor switch circuit with rally circuit and 1kHz turn generator which from the alarm circuit at the input of the system a transducer which a capacitor microphone whose the function is to piece the sound and it out put to feed in to class. A amplifier microphone preamplifier of two transistor stage cable of amplifier the sound to a standard were it be accepted by the schmih trigger or built using comparator with hysterics. This comparator with hysterics is acting as amuroge to digital convector (AID) whose one put switching between high or low conditionally. An interface containing a transistor switching circuit with rally at it out put such that once a sound is pick up out the input the rally is energized capable of switching an alarm circuit on.