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
.