LCD GRAPHIC MONITORING FOR ENERGY SAVING CONTROL APPLICATION

NORAZIANTI BINTI KAHARUDIN

This thesis is submitted as partial fulfillment of the requirement

for the award of the

Bachelor of Electrical Engineering

(Power System)

Faculty of Electrical & Electronics Engineering

Universiti Malaysia Pahang

NOVEMBER, 2008

ii

“All the trademark and copyrights use herein are property of their respective owner.

References of information from other sources are quoted accordingly; otherwise the

information presented in this report is solely work of the author.”

Signature : ________________________________

Author : NORAZIANTI BINTI KAHARUDIN

Date : 17 NOVEMBER 2008_______

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Specially dedicated to

my beloved parents, brothers and sisters.

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ACKNOWLEDGEMENT

Praise is to God for His help and guidance that I finally able to complete this

undergraduate project. I would like to take this opportunity to extend my deepest

gratitude to all the parties involved in this project.

First of all, a special thank to my supervisor , Puan Norhafidzah binti Mohd Saad

for her tireless effort and on-going support, advice as well as guidance, without whose

help, my report would not have been completed successfully.

I would like to extend my heartfelt gratitude to all FKEE lecturers especially

panels for presentations who offer tips, advice, and endless cooperation, thank you very

much.

I hope that this report will give the reader some insight as to using electricity

wisely and this design project will reduce energy wasting successfully.

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ABSTRACT

This project is describe about the designing of control system in order to

diminish energy wasting occur at the lecture halls. The main reason of the energy

wasting is because of the position of lighting and air conditioning systems’ switches are

located separately and at different places in the lecture hall, thereby make it difficult to

lecturers and students to find the switch in order to on and off the equipments. In

addition, it was make complicated and wasting time for students and lecturers to find the

correct switch to on and off the equipment because switches are not denoted for which

one lighting system and air conditioning system. This project can be divided into two

major parts. The first one is an energy saving control system part, which consists of

Graphic Liquid Crystal Display monitoring system and switching module whereas the

second part is circuit driver of lighting and air conditioning development. LCD Graphic

and switching module are used as a user interface where user merely needs to push

buttons, which placing on the user interface plate in order to switch on or off the lighting

and air conditioning system. The software programming of the PIC acts as the brain of

LCD Graphic Monitoring for energy saving control system to control overall of the

project performances.

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ABSTRAK

Projek ini menghuraikan mengenai penciptaan sistem kawalan bertujuan untuk

menghapuskan pembaziran tenaga yang berlaku di dewan kuliah Universiti Malaysia

Pahang. Antara sebab utama pembaziran tenaga yang berlaku adalah di sebabkan oleh

kedudukan suis lampu dan penghawa dingin di letakkan secara berasingan dan pada

tempat yang berbeza dalam dewan kuliah, oleh yang demikian, ia menjadi sukar kepada

pensyarah dan pelajar untuk mencari kedudukan suis bagi menyalakan unit lampu dan

menghidupkan unit penghawa dingin juga mematikan lampu dan penghawa dingin.

Tambahan pula, ini akan menyulitkan dan membazirkan masa pelajar dan pensyarah

untuk mencari suis yang betul untuk menyalakan atau mematikan lengkapan tersebut

kerana suis tidak ditandakan dengan unit-unit lampu atau penghawa dingin. Projek ini

boleh dibahagikan kepada dua bahagian utama. Bahagian pertama ialah Sistem

Pengawalan Penyimpanan Tenaga, di mana ia dilengkapi dengan sistem paparan Papar

Kristal Cecair Grafik dan Modul Suis manakala bahagian kedua adalah bahagian

pemandu litar bagi sistem lampu dan penghawa dingin. Papar Kristal Cecair Grafik dan

Modul Suis gunakan sebagai sempadan pengguna di mana pengguna hanya perlu

menekan butang yang diletakkan di atas kepingan sempadan pengguna. Pengaturcaraan

pengisian Pengawal Permukaan Sekeliling bertindak sebagai minda untuk mengawal

keseluruhan projek Sistem Pengawalan Penyimpanan Tenaga menggunakan Papar

Kristal Cecair Grafik.

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TABLE OF CONTENTS

CHAPTER TITLE PAGE

TITLE PAGE i

DECLARATION ii

DEDICATION iii

ACKNOWLEDGEMENT iv

ABSTRACT v

ABSTRAK vi

TABLE OF CONTENTS vii - ix

LIST OF TABLES x

LIST OF FIGURES xi - xii

LIST OF ABBREVIATIONS xiii

LIST OF APPENDICES xiv

1 INTRODUCTION

Overview 1 - 2

Problem Statement 3

Objectives 3 - 4

Scopes of work 4

Thesis Outline 4 - 5

2 LITERATURE REVIEW

2.1 Introduction 6

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2.2 Case study Power Utilization at DK13, UMP6 - 9

2.2 Energy saving light control system 9 - 10

2.3 User interface 11- 12

2.3 Push button as a user interface 13

2.4 LCD displays 14 - 15

2.5 Network bridge 15 - 16

2.6 Optocoupler 16 - 18

2.7 PIC 19 - 20

2.10 Crystal Operation 20 - 21

2.11 Solid State Relay 21 - 23

2.12 AC semiconductor relay for mains

voltage controlling 23 - 24

2.13 MOC 3042 information 25

2.14 Relay 26 - 27

2.15 Protection diode 28

2.16 Conclusion 29

3 METHODOLOGY

3.1 Introduction 30

3.2 Block Diagram of the Project 31 - 33

3.3 Flowchart of the Project 34

3.4 Process flow of the system in block diagram 35

3.5 Flowchart of the system 36 - 37

3.6 Algorithm for build the current sensor programming 38

3.7 Project circuits

3.7.1 Current sensor circuit diagram 39 - 41

3.7.2 Circuit driver for lighting system 41 - 42

3.7.3 Circuit driver for air conditioning system 42 - 43

3.7.4 Circuit diagram for PIC 43 - 45

3.7.5 Connection between two PICs 46 - 47

ix

3.8 Communication between LCD Graphic Display and push

buttons 47 - 49

3.9 Software Development

3.9.1 MPASM v4.01 49 - 50

3.9.2 Melabs Programmer Beta 50 – 51

3.10 Conclusion 52

4 RESULT & ANALYSIS

4.1 Introduction 53

4.2 DC Power supply 53 - 54

4.3 LCD Graphic Displays 54 - 55

4.4 LCD Graphic Interface layout 55 - 57

4.5 Hardware Designing of Energy Saving

Control System 57

4.5.1 Current Sensor Hardware 58

4.5.2 Circuit Driver for air conditioning system 59

4.5.3 Circuit Driver for lighting system 59 - 60

4.5.4 Full Hardware Development 60 - 61

4.6 Conclusion 61

5 CONCLUSION

5.1 Conclusion 62

5.2 Future recommendations 63

5.3 Costing & Commercialization 64 - 66

REFERENCES 67 - 69

APPENDIX A 70 - 78

APPENDIX B 79 - 94

APPENDIX C 95 - 97

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LIST OF TABLES

TABLE NO. TITLE PAGE

2.1 Capacitor selection for Crystal Operation 21

2.2 Advantages of relay compare to transistor 27

2.3 Disadvantages of relay compare to transistor 27

3.1 Terminal list table for ACS712 current sensor 41

5.1 List and Price for circuit driver components 64

5.2 List and price for current sensor circuit components 65

5.3 List and price for connection parts 65

5.4 List and Price for LCD Graphic 66

5.5 Total price of the project’s components 66

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LIST OF FIGURE

FIGURE NO. TITLE PAGE

2.1 Power Consumption at Function of Date 7

2.2 Number of On air cond at the function of date 8

2.3 Number of lighting On at the function of date 8

2.4 Energy saving of lighting system 10

2.5 UI prototyping process. 12

2.6 Example of push button 13

2.7 Power supply configuration 15

2.8 Diagram of opto-isolator IC 17

2.9 An opto-isolator device 17

2.10 PIC reset circuit 19

2.11 Using an external oscillator 20

2.12 An external crystal 21

2.13 Typical block diagram of SSR 22

2.14 The equivalent circuit and schematic symbol of TRIAC 24

2.15 Example circuit from datasheet 25

2.16 Relay 26

3.1 Block Diagram of the Project 31

3.2 First main part Block Diagram of the Project 32

3.3 Second part Block Diagram of the Project 33

3.4 Flow Chart of the Project 36

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3.5 Process Flow of the System 35

3.6 Flow Chart of the System 36

3.7 The Flow Chart to build Current Sensor Programming 38

3.8 Current Sensor Circuit Diagram 39

3.9 ACS712 Current Sensor IC 40

3.10 Typical Application of Current Sensor 40

3.11 Circuit Drivers for Lighting System 41

3.12 Circuit Drivers for Air Conditioning System 42

3.13 Reset circuit, External crystal circuit and Supply voltage circuit 43

3.14 PIC microcontroller 18F4620 44

3.15 Internal circuitry inside the PIC 18F4620 45

3.16 Connection between two PICs 46

3.17 First condition of LCD Graphic display 47

3.18 Second Condition of LCD Graphic display 48

3.19 Starting the MPASM v4.01 (MPASM v4.01 Windows) 50

3.20 (a) Melabs Programmer Main Windows 51

(b) Configuration Windows 51

4.1 DC Power Supply 53

4.2 LCD Graphic monitoring system 54

4.3 First page of LCD Graphic display. 55

4.4 Second page of LCD Graphic display 56

4.5 Air Conditioning System Page of LCD Graphic 56

4.6 Lighting System Page of LCD Graphic 57

4.7 Pushbutton 57

4.8 Current Sensor 58

4.9 LED, testing Current Sensor 58

4.10 Circuit Drivers for Air Conditioning System 59

4.11 Circuit Drivers for Lighting System 59

4.12 Hardware Development 60

4.13 Testing Hardware 60

4.14 (a): fan (b): testing fan 61

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LIST OF ABBREVIATIONS

PIC - Programmable Interface Controller

GLCD - Graphic Liquid Crystal Display

DK - Dewan Kuliah

kWh - Kilowatt Hour

UI - User Interface

IC - Integrated Circuit

LED - Light Emitting Diode

LP - Low Power

XT - Crystal

OSC - Oscillator

SSR - Solid State Relay

AC - Alternating Current

DC - Direct Current

EM - Electromagnetic

COM - Common

NC - Normal Close

NO - Normal Open

MAX - Maximum

MIN - Minimum

PCB - Printed Circuit Board

SPDT - Single Pole Double Throw

ASM - Assembler

UMP - University Malaysia Pahang

CHAPTER 1

INTRODUCTION

1.1 Overview

This control system is manually interface with user consists two main parts. The

first one is switching module and the second one is developed circuit driver for

controlling lighting and air conditioning systems.

Two PICs (Programmable Interface Controller) were used to control both parts

separately. For the first main part, PIC 18F4550 type was used to control and instruct the

GLCD (Graphic Liquid Crystal Display) monitoring and switching module of the system

whereas another PIC 18F4620 type was used to control and instruct the circuit driver for

controlling lighting and air conditioning systems.

Switching module acts as a user interface and it was implemented on the user

control panel board. There were three buttons only placed on the panel board which the

first button stands for increment button, the second button stands for enter button and the

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last one stands for decrement button. The functionality of the buttons were depends on

the Graphic Liquid Crystal Display itself.

For the working process of the Energy Saving Control System, Graphic Liquid

Crystal Display is used to monitor the lighting and air-conditioning systems. There were

two conditions need to be considered in order to switch ON or OFF the lighting or air

conditioning systems. The first condition is switch ON or OFF 4 units of lighting system

simultaneously, so as to 4 units of air conditioning system. The second condition is

switch ON or OFF 4 units of lighting system one by one, so as to 4 units of air

conditioning systems.

Software programming such as PICBASIC was used to make a programming and

this programming will be dragged into the PIC (Programmable Interface Controller) in

order to control overall of the system performance.

Data were gathered at the lecture hall before the installation of Energy Saving

Control System to measure the power consumption at the lecture hall for a month and

make a comparison for the energy usage everyday at that particular place. Meter (kWh)

reading was taken at three different times, those were before the class start, 8 am, during

the mid day break, 1 pm and after the class finish, 6 pm. Most of the meter reading taken

at the free time means no student in the class in order to capture the energy wasting

during that time.

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1.2 Problem Statement

University Malaysia Pahang is one of the local universities located at a Gambang

City, Kuantan Pahang. It provide four lecture halls blocks to make the learning process

which starts from 8 am to 6 pm and have a midday break at 1 pm except for weekend,

there is no class will be held.

Lighting and air conditioning system always leaving at the on Condition even

though there is no person inside the lecture hall specifically at the mid day break, 1 pm

and after finish the learning session, 6 pm.

After a few research, I got the major reason of why lighting and air conditioning

systems always leaving in the ON condition at the free classes is because by the location

of lighting and air conditioning switches which placed at the different position and rather

longer distances each other. This makes it difficult to lecturers and students to find all

the separately switches and off the system concurrently because may be they are rushing

to go to the café or going back homes/rooms.

1.3 Objectives

The aim of this project is to develop the Energy Saving Control System that can

be manually controlled by LCD Graphic Monitoring System and Switching Module.

There are two main objectives to be achieved in this project:

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1. To design, build and test the Energy Saving Control System for reducing energy

wasting occurrences in lecture hall.

2. To compile the system switches together onto interfacing plate.

1.4 Scopes of Work

This Energy Saving Control System consists of two parts. The first part is

software development and the second part is hardware design. The project will highlight

the following:

1. Develop the hardware and software of the Energy Saving Control System

2. Develop the project using LCD Graphic and switches.

3. Develop the project using two PICs: 18F4620 and 18F4550

Thesis Outline

Chapter 1 is discussing about introduction and overview of the project, problem

statement, objectives to be achieved in the project and scopes of work.

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Chapter 2 is discussing the information about the article that related to the project

design. It also includes the journal and the important information when do the research

about the project. The information got from several sources such as websites, journals,

books, magazines, handout and others.

Chapter 3 is discussing about the methodology of the project encompass block

diagram of the project built, flowchart, circuit diagram. It is also explain about some

methods used in order to design the Energy Saving Control System. The methods used

can be divided into two ways which are qualitative and quantitative.

Chapter 4 is explanation about the result and analysis of the project. This chapter

also explains the theory that adapted into the project and shows the result of the software

development.

Chapter 5 was discussing about conclusion, future recommendation, costing and

commercialization of the project.

CHAPTER 2

LITERATURE REVIEW

2.1 Introduction

This chapter will explain the information about the article that related to the

project design. Besides that, it will be important references when do the project. It also

includes the journal and the important information when do the research about the

project. The information got from several sources such as websites, journals, books,

magazines, handout and others.

2.2 Case study – Power Utilization at DK 13, UMP

Before the Energy Saving Control System is design, a research and survey of

energy consumption has been done at DK 13 University Malaysia Pahang on March

2008.

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Data of the numbers of air conditioning and lighting systems which stayed in ON

condition were gathered. The reading of the power meter in kWh was taken every day

within March 2008. Those data were taken at three different times that is before the

class start, 8 am, during the mid day break, 1 pm and after the class finish, 6 pm. Most of

the meter reading taken at the free time means no student in the class. The numbers of

air conditioner and lighting systems are 9 units and 10 units respectively.

Figure 2.1 Power Consumption at function of date

power consumption vs date

0

20

40

60

80

100

120

140

160

3/3

/2008

4/3

/2008

5/3

/2008

6/3

/2008

7/3

/2008

10/3

/2008

11/3

/2008

12/3

/2008

13/3

/2008

14/3

/2008

17/3

/2008

18/3

/2008

19/3

/2008

20/3

/2008

21/3

/2008

24/3

/2008

25/3

/2008

26/3

/2008

27/3

/2008

28/3

/2008

31/3

/2008

date

kw

h

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Figure 2.2 Number of ON air conditioning at the function of date

Figure 2.3 Number of ON Lighting at the function of date

The result of power consumption at function of date at DK 13 University

Malaysia Pahang is shown in Figure 2.1, number of ON air conditioning at function of

No of On aircond vs Date

0

1

2

3

4

5

6

7

8

3/3

/20

08

4/3

/20

08

5/3

/20

08

6/3

/20

08

7/3

/20

08

10

/3/2

00

8

11

/3/2

00

8

12

/3/2

00

8

13

/3/2

00

8

14

/3/2

00

8

17

/3/2

00

8

18

/3/2

00

8

19

/3/2

00

8

20

/3/2

00

8

21

/3/2

00

8

24

/3/2

00

8

25

/3/2

00

8

26

/3/2

00

8

27

/3/2

00

8

28

/3/2

00

8

31

/3/2

00

8

Date

No

of

ON

air

co

nd

No of lighting ON vs date

0

2

4

6

8

10

12

3/3/

2008

5/3/

2008

7/3/

2008

11/3

/200

8

13/3

/200

8

17/3

/200

8

19/3

/200

8

21/3

/200

8

25/3

/200

8

27/3

/200

8

31/3

/200

8

date

No

of

lig

hti

ng

On

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date is shown in Figure 2.2 and number of ON lighting at the function of date is shown

in Figure 2.3.

The survey is done in March 2008 at DK13. The data were collected three times

daily, taken when the hall is unoccupied. The highest energy consumption is 135.3 kWh

on 18th March 2008. The lowest energy consumption is 15.3 kWh on 19th March 2008

because there is a holiday. 7 units air-conditioning and 4 units of lighting are ON when

the hall was unoccupied on 18th March contribute to high energy consumption. The

trend of graph for power consumption and energy wasting due to air-conditioning and

lighting are almost same [1].

2.3 Energy- Saving Light Control System

Using electronic lighting control systems to save energy is increasingly a

mandatory part of commercial lighting design, and it can be a big energy-saver at home

as well. A lighting control system is a computer programmed with a keypad or touch

panel to turn lights on and off at specified times, and/or to provide less or more light in a

room for different times of use [2].

Motion sensors are typically incorporated into these systems, turning on lights

when someone walks into a room and turning them off when no motion is sensed after a

period of time [3].

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Many light control systems are light-sensitive, meaning that they only turn on

electric lights when there is insufficient daylight in the area. They can be programmed

to control blinds and fans as well as lights. Light control system can be applied to whole

house or to one area [4].

Figure 2.4 Energy Saving of lighting system

The system works by using a wireless mesh network of nodes and sensors.

Brick-size nodes are attached to lighting fixtures on the ceiling, while smaller sensors

are positioned around the plant to detect varying levels of lighting.

The light can then be controlled from an on-site or off-site computer instead of

manually operating lights in various locations. One of the greatest advantages of the

system is its potential for energy savings. The sensors allow the fluorescent lights to be

turned on and off automatically, depending on daylight levels and/or occupancy of the

workspace. Adjusting the brightness in accordance with incoming sunlight could result

in energy savings up to 60% [5].

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2.4 User Interface

The User Interface (or Human Computer Interface) which means the users

interact with the system such as a particular machine, device, computer program or other

complex tool.

The User Interface provides means of input, allowing the users to manipulate a

system and output which allowing the system to produce the effects of the users'

manipulation. The term User Interface is often used in the context of computer systems

and electronic devices [6].

Types of user interface are the most common such as Graphical User Interfaces

(GUI) accept input via devices such as computer keyboard and mouse and provide

articulated graphical output on the computer monitor and touchscreen display. Touch

interfaces are Graphical User Interfaces using a touchscreen display as a combined input

and output device [7].

The User Interface is the system to the users. What users want is for developers

to build applications that meet their needs and that are easy to use.

User Interface design important for several reasons:

1. The more intuitive the User Interface the easier it is to use and the easier it is to

use and the less expensive to use it.