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APPROVAL PAGE
This is to certify that the research work, "design and construction of a temperature-tolerance checking system" by ---, Reg. No. EE/H2007/01430 submitted in partial fulfillment of the requirement award of a Higher National Diploma on Electrical and Electronics Engineering has been approved.
By
Engr. --- Engr. ---
Supervisor Head of Department.
Signature………………. Signature……………….
……………………………….
Engr. ---
External Invigilator
DEDICATION
This project is dedicated to Almighty God for his protection, kindness, strength over my life throughout the period and also to my --- for his financial support and moral care towards me.Also to my mentor --- for her academic advice she often gives to me. May Almighty God shield them from the peril of this world and bless their entire endeavour Amen.
ACKNOWLEDGEMENT
The successful completion of this project work could not have been a reality without the encouragement of my --- and other people. My immensely appreciation goes to my humble and able supervisor mr. --- for his kindness in supervising this project.
My warmest gratitude goes to my parents for their moral, spiritual and financial support throughout my study in this institution.
My appreciation goes to some of my lecturers among whom are Mr. ---, and Dr. ---. I also recognize the support of some of the staff of --- among whom are: The General Manager, Deputy General manager, the internal Auditor Mr. --- and the ---. Finally, my appreciation goes to my elder sister ---, my lovely friends mercy ---, ---, --- and many others who were quite helpful.
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Most of instruments and machines used in industries and research laboratories have a temperature-tolerance limit. These can neither be subjected to too high nor too low a temperature for their proper functioning. But they need to function accurately as they are always used in critical applications. Here we describe a temperature-tolerance checking system that detects whether the temperature of an instrument is exceeding the allowable temperature limit. As soon as the temperature of the instrument exceeds the maximum permissible limit, it automatically generates an audio-visual warning. The system displays the temperature of the instrument using ten LEDs, with each LED representing 1°C step forming a bargraph display. The last LED (LED10) indicates the highest temperature attained. Two buzzers have been used in the circuit: One sounds when 50 per cent of tolerance temperature is reached. The other generates a warning call when LED10 glows, indicating that the maximum temperature limit has reached and the instrument has to be turned off. Temperature sensor LM35 (IC1) used in the circuit is calibrated directly in degrees Celsius and its output is linearly proportional to the temperature it senses—usually 10 mV/°C. It is rated for the full range of −55°C to +150°C. The LM3914 (IC2) is a monolithic integrated circuit that senses the analogue voltage levels to drive the ten LEDs, providing a linear analogue display. As shown in the figure, the output of temperature sensor IC1 is fed to pin 5 of LED-driver IC2. The LED driver has ten internal comparators, whose outputs are connected to LED1 through LED10.
TABLE OF CONTENTS
TITLE PAGE
APPROVAL PAGE
DEDICATION
ACKNOWLEDGEMENT
ABSTRACT
TABLE OF CONTENT
CHAPTER ONE
1.0 INTRODUCTION
1.1 BACKGROUND OF THE PROJECT
1.2 AIM OF THE PROJECT
1.3 OBJECTIVE OF THE PROJECT
1.4 SIGNIFICANCE OF THE PROJECT
1.5 PURPOSE OF THE PROJECT
1.6 APPLICATION OF THE PROJECT
1.7 ADVANTAGES OF THE PROJECT
1.8 PROBLEM/LIMITATION OF THE PROJECT
1.9 PROJECT ORGANISATION
CHAPTER TWO
2.0 LITERATURE REVIEW
2.1 REVIEW OF RELATED STUDIES
2.2 REVIEW OF RELATED TERMS
2.3 TEMPERATURE AND ITS MEASUREMENT
CHAPTER THREE
3.0 CONSTRUCTION METHODOLOGY
3.1 SYSTEM CIRCUIT DIAGRAM
3.2 SYSTEM OPERATION
3.3 CIRCUIT DESCRIPTION
3.4 SYSTEM CIRCUIT DIAGRAM
3.5 CIRCUIT OPERATION
3.6 IMPORTANCE AND FUNCTION OF THE MAJOR COMPONENTS USED IN THIS CIRCUIT
3.7 POWER SUPPLY UNIT
CHAPTER FOUR
RESULT ANALYSIS
4.0 CONSTRUCTION PROCEDURE AND TESTING
4.1 CASING AND PACKAGING
4.2 ASSEMBLING OF SECTIONS
4.3 TESTING
4.4.1 PRE-IMPLEMENTATION TESTING
4.4.2 POST-IMPLEMENTATION TESTING
4.5 RESULT
4.6 COST ANALYSIS
4.7 PROBLEM ENCOUNTERED
CHAPTER FIVE
5.1 CONCLUSION
5.2 RECOMMENDATION
5.3 REFERENCES
CHAPTER TWO: The complete chapter two of “design and construction of a temperature-tolerance checking system” is available. Order full work to download. Chapter two of “design and construction of a temperature-tolerance checking system” consists of the literature review. In this chapter all the related work on “design and construction of a temperature-tolerance checking system” was reviewed.
CHAPTER THREE: The complete chapter three of “design and construction of a temperature-tolerance checking system” is available. Order full work to download. Chapter three of “design and construction of a temperature-tolerance checking system” consists of the methodology. In this chapter all the method used in carrying out this work was discussed.
CHAPTER FOUR: The complete chapter four of “design and construction of a temperature-tolerance checking system” is available. Order full work to download. Chapter four of “design and construction of a temperature-tolerance checking system” consists of all the test conducted during the work and the result gotten after the whole work
CHAPTER FIVE: The complete chapter five of design and construction of a “design and construction of a temperature-tolerance checking system” is available. Order full work to download. Chapter five of “design and construction of a temperature-tolerance checking system” consist of conclusion, recommendation and references.
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