DESIGN AND CONSTRUCTION OF A WIRELESS TEMPERATURE TELEMETRY DEVICE

DESIGN AND CONSTRUCTION OF A WIRELESS TEMPERATURE TELEMETRY DEVICE

ABSTRACT

This project describes the development of a wireless temperature telemetry device with the use of a programmed microcontroller, temperature sensor, RF transmitter and receiver, and LCD for display as basic elements. The project is divided into two parts: the transmitter part and the receiver part.

In the transmitter part the temperature sensor measures temperature and then gives an output voltage corresponding to the sensed temperature (10mv/oC), the programmed microcontroller (Atmega328p) in this part then converts the analog signal received to a digital signal through its ADC and then sends it through the RF transmitter connected to it to the receiver part of the circuit.

In the receiver part of the circuit the digital signal is then received by the RF receiver and sent to the microcontroller connected to it, the signal value is displayed on an LCD.

This device can be used to monitor the temperature in extreme, remote locations. It can also be used in industries to monitor the temperature of rotary bodies as well as many more temperature measurement uses.

TABLE OF CONTENT

Title Page

i

Certification

ii

Declaration

iii

Dedication

iv

Acknowledgment

v

Abstract

vi

List Of Figures

vii

Table Of Content

ix

Chapter One: Introduction

1.1

Background

1

1.2

Overview Of The Project Work

2

1.3

Problem Statement

3

1.4

Project Aim

3

1.5

Project Objectives

4

1.6

Methodology

4

1.7

Thesis Outline

5

Chapter Two: Literature Review

2.1

Historical Background

6

2.2

Operation Of The Circuit Components

8

2.3

Description Of The Used Parts

8

2.3.1 Power Supply Unit

9

2.3.2 Voltage Regulator

9

2.3.3 Temperature Sensor

11

2.3.4 Atmega328P

13

2.3.5 Radio Frequency (RF) Modules

16

2.3.5.1 RF Transmitter

18

2.3.5.2 RF Receiver

19

2.3.6 LCD Module

20

2.3.7 Arduino Uno Revision 3

21

Chapter Three: Design Analysis And Specifications

3.1 Introduction And Circuit Analysis

24

3.2

Calculations And Design Analysis

27

3.2.1 Dc Power Supply And Voltage Regulation Unit

27

3.2.2 Temperature Sensing Unit

29

3.2.3 Microcontroller Unit

31

3.2.4 RF Transmission And Reception Unit

36

3.2.5 LCD Module

39

Chapter 4: Construction And Testing

4.1

Material Survey

42

4.2

Construction Materials

43

4.3

Construction Procedure

43

4.4

Testing

48

4.5

General Precautions

48

Chapter Five: Conclusion And Recommendation

5.1

Conclusion

.

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