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Title Page
Table of Content
List of Figures

1.1   Background of Study
1.2   Problem Statement
1.3   Objective of the Project
1.4   Significant of the Project
1.5   Methodology
1.6   Scope of the Project
1.7   Project Outline

2.1 What a Metal Detector Is
2.1.1 Brief History of Metal Detector Evolution
2.2 Types of Metal Detectors Available
2.2.1 Pulse Induction (PI) Metal Detector
2.2.2 Industrial Metal (IM) Detector Basic operation of an IM Detector
2.2.3 Coin/Treasure Metal Detector
2.3 Uses of Metal detectors
2.4 Principles Applied in the Project
2.4.1 Magnetism Paramagnetism Ferromagnetism Diamagnetism Antiferromagnetism Ferrimagnetism Superparamagnetism Electromagnet
2.5 Electromagnetism
2.6 Brief Description of the Electronic Components Used      
2.6.1 Resistor
2.6.2 Inductors
2.6.3 Capacitors
2.6.4 Transistors
2.6.5 TDA0161

3.1   Design of a Metal Detector Circuit
3.2   How this Metal Detector Works
3.3   Component Use for Design
3.4   Metal Detector Schematic
3.5   Explanation of Circuit
3.6   TDA0161 Proximity Detector IC
3.7   Resistor R1 and Potentiometer R2
3.8   How to Use Metal Detector
3.9   Power Supply Unit
3.10 Principle of Operation of the Metal Detector
3.11 Calculations Involving Choice of Component and
their Functions

4.1 Testing
4.2 Performance Evaluation
4.3 Project Packaging
4.4 Bill of Engineering Measurement and Evaluation     

5.1      Summary of Achievements
5.2   Problems Encountered and Solutions Adopted
5.3  Contribution to Knowledge
5.4  Suggestions for Further Improvement
5.6  Recommendation
5.5 Conclusions

The project work titled Design and construction of a metal detector. When fully design and implemented would be able to detect any metallic material that is passing or coming close. This function would serve as a security check for dangerous metallic material as an alarm. Going by the sophisticated means of armed rubbers adopt these days in the breaking into bank supermarkets offices and highly secured area. No security system will be optimized or complete without the installation of metal detector. This will stop or reduce to the bearest minimum the activities of men of the underworld. The device we then build we function as a metal detector that can scout out metal objects, such as coins, nails, keys such as car keys you may not be able to fine, and even gold if you’re looking for it in a beach (through this one may not have industrial strenght). This metal detector can detect certain kinds of metal- especially iron –containing metals, which are called ferrous meat, even if under a half-inch of drywell or sand.

1.1   Background of Study
It has been observed that the rapid growth in the technological knowledge across the world has been accompanied by a rapid rise in crime rate. These criminal acts takes the form of breaking of private and official homes and making away with a huge sum of money, valuable and in most cases hosts of lives. The background of this project work comes into play for the removal or minimization of the above criminal act by a way of a METAL DETECTOR, which will be handly or connected to a strategic position in our homes and offices.

Detection and clearance are still very often carried out in humanitarian demining ways using manual methods or computer as primary procedure. When operating in this way, detection phase still relies heavily on metal detectors, whereby, each alarm needs to be carefully checked until it has been fully understood or its source removed. This is normally done visually and prodding or excavating the ground. Metal detectors are probably going to remain in use for some time.....

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