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AUTOMATIC RAILWAY GATE CONTROL BY USING MICROCONTROLLER

AHMAD HAFIZI BIN MOHAMAD

This report is submitted in partial fulfillment of the requirements for the award of

Bachelor of Electronics Engineering (Industrial Electronics) with Honours

Faculty of Electronics Engineering and Computer Engineering

Universiti Teknikal Malaysia Melaka

May 2011

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UNIVERSTI TEKNIKAL MALAYSIA MELAKA FAKULTI KEJURUTERAAN ELEKTRONIK DAN KEJURUTERAAN KOMPUTER

BORANG PENGESAHAN STATUS LAPORAN

PROJEK SARJANA MUDA II

Tajuk Projek : Automatic Railway Gate Control By Using Microcontroller Sesi Pengajian

: 1 0 / 1 1

Saya AHMAD HAFIZI BIN MOHAMAD mengaku membenarkan Laporan Projek Sarjana Muda

ini disimpan di Perpustakaan dengan syarat-syarat kegunaan seperti berikut:

1. Laporan adalah hakmilik Universiti Teknikal Malaysia Melaka.

2. Perpustakaan dibenarkan membuat salinan untuk tujuan pengajian sahaja.

3. Perpustakaan dibenarkan membuat salinan laporan ini sebagai bahan pertukaran antara institusi

pengajian tinggi.

4. Sila tandakan ( ) :

SULIT*

*(Mengandungi maklumat yang berdarjah keselamatan atau kepentingan Malaysia seperti yang termaktub di dalam AKTA RAHSIA RASMI 1972)

TERHAD**

**(Mengandungi maklumat terhad yang telah ditentukan oleh organisasi/badan di mana penyelidikan dijalankan)

TIDAK TERHAD

Disahkan oleh:

__________________________ ___________________________________ (TANDATANGAN PENULIS) (COP DAN TANDATANGAN PENYELIA)

Tarikh: .. Tarikh: ..

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I hereby declare that this report is the results of my own work except for quotes as cited

in the reference.

Signature :

Author : AHMAD HAFIZI BIN MOHAMAD

Date : 3rd MAY 2011

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I hereby declare that I have read this report and in my opinion this report is sufficient in

terms of the scope and quality for the award of Bachelor of Electronic Engineering

(Industrial Electronics) With Honors

Signature :

Supervisors name : MISS MUZALIFAH BINTI MOHD SAID

Date : 3rd MAY 2011

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Dedicated to my parents, my siblings, and all my beloved person.

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ACKNOWLEDGEMENT

First of all, I would like to thank God for his blessing, and I also want to

express my deepest gratitude to my supervisor Miss Muzalifah Bt. Mohd Said for

support and guidance throughout this project running and completion of this report.

My deepest appreciation also goes out to Mrs. Sharatul Izah Bt. Samsudin who

gave me many needed support, encouragement and help throughout my projects

improvement in PSM I, and my friends who struggling with me exploring this scope.

Not to forget, thanks to my family and fellow friends who encouraged me.

Finally, thank you to all those involved directly and indirectly helping me out

during my PSM I & PSM II which I cant state out every one of them. A special

expression of gratitude is extended to everyone for their tolerance and patience in doing

the project. I must admit that they had enriched me in many ways and words alone are

not enough to express my gratitude.

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ABSTRACT

The purpose of this project is to develop an automatic railway gate system that

uses the microcontroller as a main function of design. The principle objective of this

project was to design an automatic railway gate control by microcontroller. This project

deals to develop a prototype of railway gate that function automatically by using

microcontroller. Besides that, the interfacing program also had been developed for the

integration part. The operation using microcontroller (PIC16F877A) that integrated with

other circuits involved such as power supply, IR sensor, light and buzzer, gate motor and

LCD display. All the circuits will be combining to demonstrate the operation of

microcontroller (PIC16F877A). This system will make improvement towards the

manually operation before this. Human supervision will be considered if there are

problems occurred while this system was operated.

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ABSTRAK

Tujuan projek ini adalah untuk membina sebuah sistem pengendalian pagar

lintasan keretapi secara automatik yang menggunakan mikropengawal sebagai asas

binaan di dalam rekaannya. Prinsip tujuan projek ini adalah untuk membina sistem

pengendalian pagar lintasan kereta api secara automatik dengan menggunakan

mikropengawal. Ia termasuk untuk membangunkan sebuah prototaip sistem pagar

lintasan kereta api yang berfungsi secara automatic. Selain itu, sebuah program juga

dibentuk bagi menggabungkan bahagian-bahagian tertentu di dalam sistem ini. Operasi

mikropengawal (PIC16F877A) juga melibatkan litar-litar lain seperti litar bekalan kuasa,

infrared, lampu dan buzzer, motor dan paparan LCD. Kesemua litar-litar ini

digabungkan bagi menunjukkan bagaimana mikropengawal (PIC16F877A) beroperasi.

Sistem ini berfungsi bagi menambah baikkan sistem yang sedia ada sekarang yang

masih menggunakan sistem manual. Khidmat pekerja hanya diperlukan apabila situasi

berdepan masalah seperti sistem gagal beroperasi.

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CONTENTS

CHAPTER TITLE PAGE

PROJECT TITLE i

REPORT STATUS VERIFICATION FORM ii

STUDENTS DECLARATION iii

SUPERVISORS DECLARATION iv

DEDICATION v

ACKNOWLEDGEMENT vi

ABSTRACT vii

ABSTRAK viii

CONTENTS ix

LIST OF TABLES xii

LIST OF FIGURES xiii

LIST OF APPENDICES xvi

I INTRODUCTION 1

1.1 Project Introduction 1

1.2 Project Objectives 2

1.3 Problem Statement 2

1.4 Scope of Works 3

1.5 Methodology 4

1.6 Report Structure 5

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II LITERATURE REVIEW 6

2.1 Previous System 6

2.2 Block Diagram Description 7

2.2.1 Gate Control Unit 9

2.2.2 Announcement Unit 10

2.3 Microcontroller 10

2.3.1 PIC16F877A 11

2.4 Programming Language 13

2.5 Infrared Sensor 14

2.5.1 IR Transmitter 14

2.5.2 IR Receiver 15

2.6 Motor Theory 16

2.7 H-Bridge 17

2.7.1 L293D 18

2.8 LCD 19

2.9 Proteus VSM 20

2.10 PIC C Compiler 23

III METHODOLOGY 26

3.1 Project Methodology 26

3.2 Project Flow Chart 28

3.3 System Flow 29

3.3.1 Process Procedure 30

3.4 Hardware Assembly 31

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IV RESULTS AND DISCUSSION 33

4.1 System Explanation 33

4.2 The Designed Circuits 36

4.2.1 Sensor Circuit 36

4.2.2 Buzzer Circuit 38

4.2.3 Lighting Alarm Circuit 39

4.2.4 Voltage Regulator Circuit 40

4.2.5 LCD Circuit 41

4.2.6 Motor Circuit 44

4.2.7 PIC16F877A Integration Circuit 46

4.3 The Simulation Result 47

4.3.1 Voltage Supply 47

4.3.2 PIC16F877A Interfacing Result 48

4.4 The Programming Result 50

4.5 Hardware Description 53

4.5.1 The Constructed Circuits 53

4.5.2 The Prototype 57

IV CONCLUSION AND RECOMMENDATION 59

5.1 Conclusion 59

5.2 Recommendation 60

REFERENCES 61

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LIST OF TABLES

NO. TITLE PAGE

4.2.5 The pin structure of LCD module 43

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LIST OF FIGURES

NO. TITLES PAGE

2.2.1 Block diagram of the system 7

2.2.2 The functionality between microcontrollers 8

2.2.1.1 The diagram of gate control unit 9

2.3.1.1 PIC16F877A pins/terminals 12

2.3.1.2 PIC16F877A chip 12

2.5.1 Infrared sensor 14

2.5.1.1 IR transmitter circuit using 555 IC timer 14

2.5.2.1 IR receiver circuit using 555 IC timer 15

2.6.1 Stepper motor 16

2.6.2 Servo motor 16

2.6.3 DC motor 17

2.7.1 The diagram of basic H-bridge 17

2.7.1.1 The interfacing diagram 18

2.7.1.2 L293D IC chip 19

2.8 LCD 19

2.9.1 Proteus VSM 20

2.9.2 ISIS 7 Professional user interface 21

2.9.3 ARES 7 Professional user interface 21

2.9.4 Components selection 22

2.9.5 Parameter settings 22

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2.9.6 Simulation buttons 23

2.10.1 CCS C Compiler 23

2.10.2 PIC C Compiler user interface 24

2.10.3 Create new file/project 24

2.10.4 Example program 25

2.10.5 Compile summary 25

3.2 Project flow chart 28

3.3 System flow chart 29

3.3.1.1 The flow of the process in the system 30

3.4.1 The diagram of hardware assembly done 31

4.1.1 The system diagram with fully explanation 33

4.2.1.1 The designed IR sensor circuit 36

4.2.1.2 Example of IR module with pins/terminals 37

4.2.1.3 The diagram of suggested arrangement IR module 37

4.2.2.1 The designed buzzer circuit 38

4.2.3.1 The designed lighting alarm circuit 39

4.2.4.1 The designed voltage regulator circuit 40

4.2.5.1 The designed LCD circuit interface with PIC16F877A circuit 41

4.2.6.1 The designed motor circuit interface with PIC16F877A circuit 44

4.2.7.1 The designed overall PIC16F877A interfacing circuit 46

4.3.1.1 The simulation result give value of 5V 47

4.3.2.1 The result after PIC16F877A being triggered 48

4.3.2.2 The result after PIC16F877A triggered to back normal condition 49

4.4.1 The programming result 52

4.5.1.1 The sensor circuit 53

4.5.1.2 The sensor circuit on PCB 53

4.5.1.3 The main circuit 54

4.5.1.4 LCD show the notification of closing the gate 55

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4.5.1.5 The gate motor used 55

4.5.1.6 The sensor located at side of the railway track 56

4.5.2.1 The prototype of model railway gate system 57

4.5.2.2 The prototype of model railway gate system 58

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LIST OF APPENDICES

NO. TITLES PAGE

A Gantt Chart 63

B Microchip PIC16F87XA Data Sheet 65

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CHAPTER I

INTRODUCTION

1.1 Project Introduction

In general, this project utilizes the importance of microcontroller as a main

design. It used to provide improvement into manual system that exist nowadays.

Microcontroller is a small unit of controller that acted following the instruction

programmed. All the circuits included in this prototype were designed following the

suitability of PIC16F877A.

This automatic railway gate system was operated after signal received from the

IR sensor. This signal used to trigger the PIC16F877A for operating the gate motor and

alarm indicators by instruction programmed.

Electronic applications used to enable this system operated in automatic mode.

The computer usage must be fully utilized to building up a system that encourage

implementing of the technology.

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1.2 Project Objectives

The microcontroller (PIC16F877A) is use to demonstrate the integration of computer

method in railway gate operation.The objectives of this project are:

i. To develop a prototype of railway gate that function automatically by using

microcontroller.

ii. To develop an interfacing program for the integration part of microcontroller

operation.

iii. To design an automatic railway gate control by using microcontroller.

Furthermore, this project is aimed to replace the gatekeepers with an automatic

system. It is develop to apply the structure of interfacing program in between to give a

lot of advantages.

1.3 Problem Statement

Nowadays, the railway gate is operating by manual operation. It is operating in

the area that there are railway line junction with the road. The railway gate management

has to employ workers to be on duty for control the operation. Due to this, the worker

will manually open and close the gate with under supervision.

This prototype will introduce the automatic railway gate operation. This system

will make improvement towards the manually operation before this. Human supervision

will be considered if there are problems occurred while this system was operated.

This is an idea to perform computer integration with mechanical structure to

simulate what the system can do. Control system with computer applications will make

the management or consumer become more effective. Therefore, this is the best example

in develop railway gate management system become more efficient.

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1.4 Scope of Works

This project covered the operation of automatic railway gate control by using

microcontroller (PIC16F877A). The circuits involved such as power supply, IR sensor,

light and buzzer, gate motor and LCD display.

All of these operations will be combining to demonstrate the operation of

microcontroller (PIC16F877A).

The operations of microcontroller works follow the instruction programmed. The

combining circuits were constructed on Proteus software to seen whether that circuits

was right or not. After that, the hardware part was constructed after all the simulation

being done.

IR sensor circuit is providing signal to triggered the PIC16F877A. The sensed

signal wills active the gate motor and LCD display. Alarm and indication light circuit

was provided as additional part of this system.

Additional elements can be added without affecting the remaining elements. This

allows the flexibility of the developed system.

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1.5 Methodology

This project began with the research of the proposed title. The result of that

research is then discussed with the supervisor. Once the title of project was approved,

the background of study for this project was explored.

PIC16F877A was chosen as a microcontroller. Then, the circuits simulation was

performed. In the other hand, the instruction programmed also being built for the

interfacing part. After all being settled, the construction of hardware part was started

after the components were being chosen.

In all the steps done there are troubleshooting part to resolve the problems

facing. Between hardware part and instruction programmed built, there are integrated

step that allows the PIC16F877A to simulate all the operations of the system.

After all the part is complete to built, some analysis should being made to show

what the solution of the problems occurred. It involving the comparison between the

research that had been done before this.

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1.6 Report Structure

Chapter 1 introduced the project as a whole. The early and basic explanations

were mentioned in this chapter. This chapter consisted of the project introduction and

objectives, problem statements, scope of work, and the simplified methodology.

Chapter 2 is literature review. Past projects system were taken into consideration

when completing this chapter. The ways those projects and researches had been done

were compared with what this project. These comparisons were done to understand what

this project is all about and where it stands.

Chapter 3 is methodology. It explained how this project came to be. This chapter

explained the part most important of all, the flow this project. What had been researched

and what needed to be done was explained in this chapter.

Chapter 4 concentrated on the result and discussion of this project. What had

been done was explained in diagrams and written programs. The expected results also

mentioned in this chapter.

Chapter 5 was the final chapter in this report. The conclusions and

recommendations were placed in this chapter. In other words, the conclusion was the

summary of what had been done throughout this project. After the project was done,

recommendations were made and any expansions or upgrades that might be done in the

future were suggested.

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CHAPTER II

LITERATURE REVIEW

2.1 Previous System

At present scenario, in the level crossing line the railway gate is operated

normally by a gate keeper. This happen when the railway line is cross over the road and

there are a gate that have to be controlled. The gate keeper work after receiving the

information about the train arrival from the nearer station. When the train starts to leave

the station, the particular station delivers the information to give the signal for gate

keeper to get ready. This is the operation are followed for operating the railway gates.

In addition, this automatic railway gate system can contribute a lot of benefit

either to the road user or to the railway management. This type of gate can be

implementing in the level crossing where the chances of accidents are higher. The

computer integration will be use to provide addition in the latest technology.

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2.2 Block Diagram Description

Figure 2.2.1: Block diagram of the system

This prototype of project demonstrated the Automatic Railway Gate Control by

Using Microcontroller (PIC16F877A). The sensors are fixed at the certain distance on

both sides of the gate, that is before the train arrive and after the train departure. The

sensed signal is send to the microcontroller (PIC16F877A) and checked whether there

are vehicles or people between the gate. At the same time, alarm and indication light

signal are provided to the road users to warn the closing of gates.

In sequences, the gate motor will move forward direction to close the gate. It will

stay closed at certain time until the train has crossed the gate and reached the second

sensor activate the motor in backward direction so the gate will open.

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Lighting signal also provided at the certain distance as pre cautionary step for

driver. Meanwhile, the nearer station also will provide an indication alarm to remind

them about the crossing train. If anything happened at the gates, this alarm will alert the

station. LCD display will show the arrival of the train to cross the gate as additional

features of this system.

Figure 2.2.2: The functionality between microcontrollers

PIC16F877AMicrocontroller

Sensor

Motor

Lighting AlarmBuzzer

LCD

CHAPTER IINTRODUCTION1.2 Project Objectives1.3 Problem Statement