universiti teknikal malaysia melakaeprints.utem.edu.my/15427/1/voice controlled wheelchair by using...
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UNIVERSITI TEKNIKAL MALAYSIA MELAKA
VOICE CONTROLLED WHEELCHAIR BY USING VISUAL
BASIC
This report submitted in accordance with requirement of the Universiti Teknikal
Malaysia Melaka (UTeM) for the Bachelor’s Degree in Electronics Engineering
Technology (Industrial Electronics) (Hons.)
by
`AFIF BIN MOHD MAAROF
B071110181
900114-87-5029
FACULTY OF ENGINEERING TECHNOLOGY
2015
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UNIVERSITI TEKNIKAL MALAYSIA MELAKA
BORANG PENGESAHAN STATUS LAPORAN PROJEK SARJANA MUDA
TAJUK: VOICE CONTROLLED WHEELCHAIR BY USING VISUAL BASIC
SESI PENGAJIAN: 2014/15 Semester 2 Saya `AFIF BIN MOHD MAAROF mengaku membenarkan Laporan PSM ini disimpan di Perpustakaan Universiti Teknikal Malaysia Melaka (UTeM) dengan syarat-syarat kegunaan seperti berikut:
1. Laporan PSM adalah hak milik Universiti Teknikal Malaysia Melaka dan penulis. 2. Perpustakaan Universiti Teknikal Malaysia Melaka dibenarkan membuat salinan
untuk tujuan pengajian sahaja dengan izin penulis. 3. Perpustakaan dibenarkan membuat salinan laporan PSM ini sebagai bahan
pertukaran antara institusi pengajian tinggi.
4. **Sila tandakan ( )
SULIT
TERHAD
TIDAK TERHAD
(Mengandungi maklumat yang berdarjah keselamatan atau kepentingan Malaysia sebagaimana yang termaktub dalam AKTA RAHSIA RASMI 1972)
(Mengandungi maklumat TERHAD yang telah ditentukan oleh organisasi/badan di mana penyelidikan dijalankan)
Alamat Tetap:
No 8, Jalan 4/3K,
Bandar Baru Bangi,
43650 Selangor.
Tarikh: ________________________
Disahkan oleh:
Cop Rasmi: Tarikh: _______________________
** Jika Laporan PSM ini SULIT atau TERHAD, sila lampirkan surat daripada pihak berkuasa/organisasi berkenaan dengan menyatakan sekali sebab dan tempoh laporan PSM ini perlu dikelaskan sebagai SULIT atau TERHAD.
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DECLARATION
I hereby, declared this report entitled “Voice Controlled Wheelchair By Using
Visual Basic” is the results of my own research except as cited in references.
Signature : ………………………………………….
Author’s Name : …………………………………………
Date : …………………………………………
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APPROVAL
This report is submitted to the Faculty of Engineering Technology of UTeM as a
partial fulfillment of the requirements for the degree of Bachelor of Electronics
Engineering Technology (Industrial Electronics) (Hons.). The member of the
supervisory is as follow:
………………………………
(Project Supervisor)
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ABSTRAK
Kerusi roda berkuasa dengan kawalan kayu ria, kawalan skrin tidak dapat dikawal oleh
kebanyakan orang. Jadi kerusi roda yang dikawal oleh suara boleh menyediakan akses
mudah untuk orang kurang upaya fizikal yang tidak dapat mengawal pergerakan badan
mereka terutama tangan. Projek ini boleh membantu untuk meningkatkan kemudahan
mobiliti untuk mereka yang kurang upaya, kecederaan yang teruk dan juga golongan
orang tua oleh itu reka bentuk ini boleh membantu mereka ini untuk menaik taraf
kehidupan mereka untuk hidup lebih selesa. Pengecaman suara merupakan teknologi
terbaru yang memberi alternatif kepada orang ramai untuk berinteraksi dengan mesin
atau peranti elektronik. Untuk menyelesaikan masalah ini ialah dengan melaksanakan
kawalan suara maka dengan menggunakan mikrofon untuk mengawal kerusi roda.
Sistem pengecaman suara akan menggunakan perisian Visual Basic 6.0. Sistem ini
adalah reka bentuk untuk mengawal kerusi roda menggunakan input suara dari
pengguna untuk melaksanakan pergerakkan kerusi roda, dengan itu ia dapat memberi
kawalan kepada pengguna ke atas kerusi roda tanpa memerlukan sebarang bantuan
daripada orang lain. Oleh itu Visual Basic digunakan untuk mengiktiraf suara
seterusnya mengawal pergerakkan kerusi roda. Projek ini menggunakan
mikropengawal PIC16F877A litar dan motor arus terus untuk mewujudkan pergerakan
kerusi roda.
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ABSTRACT
The powered wheelchairs with the standard joystick and screen control are unable to
control by many people. So a voice controlled wheelchair can provide easy access for
physical disabled person who cannot control their movement especially using hands.
This project can help to increase the ease of mobility for disable, injured and older
people as a result this design can help the people to upgrade their life to live more
independently. Voice recognition is a prominent technology which gives an alternative
to people to interact with machines electronic devices. Implementing voice control
interfacing over a microphone for the wheelchair can resolve this problem. The voice
recognition system will be using Visual Basic 6.0 software. The system is designed to
control a wheelchair using the voice inputs from the user to performing the
programmed motion, thereby giving a control to the user over the wheelchair without
need any help from other people. Therefore Visual Basic interface is for recognizes a
voice in turn controls the movement of wheelchairs. This project uses PIC16F877A
microcontroller circuit and Direct Current Motor to create the movement of
wheelchair.
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DEDICATION
To my beloved mother and father
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ACKNOWLEDGEMENT
First and foremost, I would like to take this opportunity to express my sincere
acknowledgement to my supervisor Mr. Khairul Azha Bin A.Aziz from the Faculty of
Engineering Technology Universiti Teknikal Malaysia Melaka (UTeM) for his
essential supervision, support and encouragement towards the completion of this
thesis. Special thanks to UTeM grant funding for the financial support throughout this
project.
Special thanks to all my friends, my mother, beloved father and sibling for their
moral support in completing this degree, lastly thank you to everyone who had been
to the crucial parts of realization of this project.
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TABLE OF CONTENT
Abstrak i
Abstract ii
Dedication iii
Acknowledgements iv
Table of Contents v
List of Tables viii
List of Figures x
List of Abbreviations, Symbols and Nomenclatures xii
CHAPTER 1: INTRODUCTION 1
1.1 Introduction of Project 1
1.2 Project Background 2
1.3 Project Objective 5
1.4 Problem Statement 5
1.5 Scope of Project 6
1.6 Methodology 7
CHAPTER 2: LITERATURE REVIEW 8
2.1 Introduction 8
2.2 Wheelchair History 8
2.3 Visual Basic 10
2.4 Speech Recognition 11
2.5 Microsoft Speech SDK 5.1 12
2.6 RS232 Serial Port 12
2.7 Microcontroller PIC16F877A 15
2.8 Motor Driver MDD10A 16
2.9 DC Motor 16
2.10 Past Project 17
2.10.1 Wheelchair Movement Controlled by 18
Voice Recognition
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2.10.2 Voice Recognition Robotic Car 18
2.10.3 Smart Home Automation Using Voice 19
Recognition
2.13.4 Biometric Voice Recognition in Security 19
System
CHAPTER 3: METHODOLOGY 20
3.1 Project Development 20
3.2 Software Implementation 23
3.2.1 Installed Microsoft Speech SDK 5.1 24
3.2.2 Installed RS232 Serial Port 25
3.2.3 Create Graphic User Interface by Visual Basic 6.0 26
3.2.4 PIC Basic Pro 30
3.3 Electronic Implementation 32
3.3.1 SK40C 33
3.3.2 Motor Driver MDD10A 34
3.3.3 DC Motor 36
3.4 Mechanical Implementation 36
CHAPTER 4: RESULT AND DISCUSSION 40
4.1 Result 40
4.2 Accuracy of Voice Recognition 46
4.3 Accuracy of the system 57
4.4 Discussion 58
CHAPTER 5: CONCLUSION & RECOMMENDATIONS 60
5.1 Conclusion 60
5.2 Recommendation 61
REFERENCE 62
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APPENDICES
A Gantt Chart
B Coding Visual Basic
C Coding PIC16F877A
D Datasheet PIC16F877A
E Datasheet MDD10A
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LIST OF TABLES
2.1 Wheelchair History Timeline 9
2.2 RS232 pin assignment (DB9 PC Signal Set) 14
2.3 Advantages and Disadvantages of various type of DC motor 17
3.1 Type of character for data transmission 28
3.2 Truth table for the control logic for both motor 35
3.3 The Truth Table for Each Movement 35
4.1 Truth Table for the control for both motor 42
4.2 List of Voice Command 44
4.3 Visual Basic for Command and Value 46
4.4 PIC16F877A Value Receive and Action 46
4.5 List of Voice Command Participant 1 (Silent) 48
4.6 List of Voice Command Participant 1 (Noise) 48
4.7 Percentage of Accuracy Participant 1 48
4.8 List of Voice Command Participant 2 (Silent) 49
4.9 List of Voice Command Participant 2 (Noise) 49
4.10 Percentage of Accuracy Participant 2 49
4.11 List of Voice Command Participant 3 (Silent) 50
4.12 List of Voice Command Participant 3 (Noise) 50
4.13 Percentage of Accuracy Participant 3 50
4.14 List of Voice Command Participant 4 (Silent) 51
4.15 List of Voice Command Participant 4 (Noise) 51
4.16 Percentage of Accuracy Participant 4 51
4.17 List of Voice Command Participant 5 (Silent) 52
4.18 List of Voice Command Participant 5 (Noise) 52
4.19 Percentage of Accuracy Participant 5 52
4.20 List of Voice Command Participant 6 (Silent) 53
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4.21 List of Voice Command Participant 6 (Noise) 53
4.22 Percentage of Accuracy Participant 6 53
4.23 List of Voice Command Participant 7 (Silent) 54
4.24 List of Voice Command Participant 7 (Noise) 54
4.25 Percentage of Accuracy Participant 7 54
4.26 List of Voice Command Participant 8 (Silent) 55
4.27 List of Voice Command Participant 8 (Noise) 55
4.28 Percentage of Accuracy Participant 8 55
4.29 List of Voice Command Participant 9 (Silent) 56
4.30 List of Voice Command Participant 9 (Noise) 56
4.31 Percentage of Accuracy Participant 9 56
4.32 List of Voice Command Participant 10 (Silent) 57
4.33 List of Voice Command Participant 10 (Noise) 57
4.34 Percentage of Accuracy Participant 10 57
4.35 Percentage of Accuracy System 58
4.36 Total cost of Wheelchair 58
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LIST OF FIGURES
1.1 Block Diagram for overview of project 4
1.2 Flowchart of Project 7
2.1 Handshake looping a PC serial connector 13
2.2 RS232 Pinout 13
2.3 MAX232 Interfacing with microcontroller 17
3.1 Flowchart of project 22
3.2 Software for software development 23
3.3 Installation of Microsoft Speech SDK 5.1 24
3.4 RS232 Prolific Serial Port 25
3.5 Visual Basic Operation 26
3.6 Introduction Interface 28
3.7 Program Interface 29
3.8 Component Microsoft Voice Commands 29
3.9 Component Microsoft Comm Control 6.0 and Microsoft
Command Dialog Control 6.0
30
3.10 Microcontroller flowchart operation 31
3.11 Microcontroller program 32
3.12 Electronic Flowchart 33
3.13 SK40C 33
3.14 MDD10A 34
3.15 Bicycle gear and timing chain gear 35
3.16 Sprocket timing chain weld to DC motor 36
3.17 DC motor plate holder 36
3.18 Controller Box 37
3.19 Switch and Serial Communication at Controller Box 37
3.20 The Wheelchair ready for testing 37
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4.1 Circuit Connection 38
4.2 Codes for initialize and enable voice control 39
4.3 Codes to show the status of wheelchair 40
4.4 Codes to show the available serial port 41
4.5 The program interface was respond 41
4.6 RS232 Connection 43
4.7 Coding in microcontroller 44
4.8 Silent and Noise according to participant 55
4.9 Silent and Noise average 55
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LIST OF ABBREVIATIONS, SYMBOLS AND
NOMENCLATURE
ADA - Americans with Disabilities Act
ADL - Activity if Daily Living
PDSS - Physical Disability Stress Scale
WWII - World War 2
DC - Direct Current
SDK - Software Development Kit
SAPI - Speech Application Programming Interface
VB - Visual Basic
GUI - Graphic User Interface
OLE - Object Linking and Embedding
API - Application Programming Interface
DTE - Data Terminal Equipment
DCE - Data Communication Equipment
PIC - Peripheral Interface Controller
RAM - Random Access Memory
ROM - Read Only Memory
UART - Universal Asynchronous Receiver/Transmitter
USART - Universal Synchronous Asynchronous
Receiver/Transmitter
RF - Radio Frequency
DC - Direct Current
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Nowadays, more and more day people are suffering from losing the abilities to move
their hand and body. Wheelchair is a very important necessity for handicap. Many
organizations intend to design and create a more convenient high technology
wheelchair for the handicap. Most available wheelchair in the market is self-control
wheelchair. So it is not practical for person who lost the hands or legs or lost the
abilities to use their hand and lack of stamina such as older people. For those people
they still have their voice so they can use voice to control wheelchair without moving
their body.
1.1 Introduction of Project
The focus of this project is to design and develop a voice controlled wheelchair
for handicap, disability and older people. Today, more and more people are suffering
from losing their hand and losing their hand and losing capabilities to control their
hand or body. Wheelchair is a very important necessity for the handicap. Many
organizations intend to design and create a more convenient wheelchair for the
handicap such as joystick controller.
But this chair come with high price and most available wheelchair in the market
are self-control wheelchair. So it is not practical for person who lost their hands or lost
abilities to use their hand or body or lack of stamina such as older people, but for those
people they still have their voice so they can use their voice to controlled wheelchair
without moving their body.
INTRODUCTION
CHAPTER 1
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1.2 Project Background
Electric wheelchair has given a lot of benefit of today technology make the life
of handicap and disabled people more quality and comfortable especially for people
or individual which have a problem of broken a leg or hand, paralyzed or elderly
people but by using power wheelchair it can be assistance or help them to improve
their capability to move independently. With a voice control wheelchair, it can help
people to move to any areas more easily and smoothly.
According Furlong M, Connor JP. (2007) to several studies have shown that
the independent transportability, which is included power wheelchair, manual
wheelchair and walker it all give the benefit to both children and adults. Independent
transportability increases career or employment opportunities, reduces dependence on
caregivers and family members, and promotes feelings of self-dependence.
According Linda Carter, J.D, Beth Loy (2013) from Americans with Disabilities
Act or known as ADA has make a studies about wheelchair users in the United States,
there are an estimated 1.4 million wheelchair users in the United States (Kraus, 1996).
People use the wheelchairs for a many of reasons, the most common reason are being
paralysis from spinal cord injuries. Current estimates indicate there are between 183,000
and 230,000 persons alive today in the United States with spinal cord injuries. The mean
age of injury is 38 (Spinal Cord Injury Information Network, 2008).
There are much type of wheelchairs on the market, including manual,
motorized, stand-up, elevating, reclining, sports, beach, and stair-climbing. Most
people who use wheelchair have some of limitation, but rarely have in all of them.
Beside that this limitation is depend on individual who use wheelchair need the
accommodations but may be few of the will need some of accommodations.
For a handicapped person, to be independent is a important condition of self-
confidence. For a case, usually handicap and older people has a problem with difficult
to walk or pull a wheel for themselves, so literally they might be do take easily about
their hygiene for example drink less mineral water to reduce a routine of urination.
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According to Furling M, Connor JP (2007) Mobility limitations are the leading
cause of functional limitations among adults with an estimated prevalence of 40 per
1000 persons age 18 to 44 and 188 per 1000 at age 85 and older. Transportability
difficulties are also strong predictors of activities of daily living (ADL) and
instrumental ADL disabilities because of the need to move to accomplish many of
these activities. In addition, because of the limitation of the movement, it can affect a
result to an individual to join a social activity which can lead them into social isolation,
anxiety and depression
According to Furling M, Connor JP (2007) from the National Center for
Biotechnology Information is U.S studies state that from the 119 wheelchairs users
with acquired physical disability are participates state a result there is 4 main factors
of disability related stress, access accounted for 33.7% of the variance, physical for
8.4% of the variance, social for 7.9% of the variance and burden of care for 7.2% of
the variance
From the ZocDoc (2014), there are some disability people asking a question
that he felt so small and meaningless and helpless. Disable people will find that it there
is some element of post-traumatic stress disorder that accompanies any traumatic
event. Nowadays wheelchair has become popular among the elderly and disabled
people because the power wheelchair that they are easy and helpful which can be
controlled by the user in the chair by using their hands or other body parts useful. The
function is very important for some who need to be more independent and confident.
In fact, there is many varieties of power wheelchair is available in the market
which there is thousands of companies for wheelchair, online sites, shop and mall. But
most of the wheelchair must be control using hand, leg or any other body parts. Seeing
that people regularly communicates each other by voices, it is very beneficial if voice
is used to command robots.
Wheelchair is a very important vehicle for the handicapped or older people to
help them move around in spite of that for the people who has serious body injury or
paralysis or older people, the wheelchair with joystick are not productive device as a
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control device. Lately the development in speech technology has becoming a focus
attention of researchers to establish a more great design, simple, reduce cost to support
and help the disabled community
This project describes a wheelchair which the user can control the wheelchair
only by using the voice command. This project will give contribute a great benefit to
disable people and elderly people to control a movement of a wheelchair.
The aims of this project is to help a movement of the disabled people who
cannot move properly or need help to move to have a more better and quality life and
help them build self-esteem. Speech recognition technology will give a great benefit
to human to interact with a machines or tools for controlling a wheelchair.
This project are divided to two part which software and hardware. For the
software, the program that will used required the computer that equipped with Visual
Basic and for the interaction between computer and user the project using the
microphone as an intermediary which is used as the input of human voice.
Furthermore this project also used a Programmable Integrated Circuit (PIC)
which is operate as a switch to control the movement of wheelchair based on the human
voice as an input with installing two DC motors as the driving force.
The power wheelchair equipped with five options for basic motion for user to
control the wheelchair. The five condition of the wheelchair can be described as the
following.
(a) Moving forward.
(b) Moving backward.
(c) Turning to the right.
(d) Turning to the left.
(e) Stop moving.
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This project describes the design and development of the motion control using
voice recognition for a wheelchair application. Figure 1.1 shows the block diagram for
overall of the project.
Figure 1.1: Block Diagram for project
1.3 Project Objective
(a) To develop a wheelchair system that can be control by using voice.
(b) To develop a voice recognition system by using Visual Basic.
(c) To increase disabled people ability to live independently.
1.4 Problem Statement
People with disabilities meet barriers of all types. However the technology can
be a help to reduce of these barriers by creating the powered wheelchairs. Because
some wheelchairs may not fit enough for disable or older people to use their hands to
operate a joystick or move the wheel. So to overcome this problem, by using this
technology it can help to create and design this wheelchair to minimize disable people
difficulties.
The result of this design will allow certain people to live a life independently.
Speech Recognition technology including voice recognition is a key which may
provide a new way of human interaction with machines or tools. Thus the problem that
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they are faced can be solved by using Voice Recognition Technology to move the
wheelchair. This can be realized with used the microphone as an intermediary.
Furthermore a handicapped people with locomotive disabilities needs a
wheelchair that can perform a function that require a person to move around and most
regular and low cost wheelchair need to be push by using hands. However there are
individual that have weak upper body or do not have strength to operate it manually.
So that it is desirable to provide them with the automatic motorized wheelchair
that can be control by moving joystick, but it is too mainstream and limit to person
who still have body capabilities to move hands. But for handicapped people how do
not have capabilities on upper body and elder people who find the manual mode is too
tiring, the voice control can be the answer of this problem.
With a lower cost and price that a current market and affordable for as many
handicapped people this wheelchair will have a potential to the market and future as
new technology that can help a people who need this type of service.
1.5 Scope of Project
This project is focus on handicap people who lose their hand or lose abilities
to move their body. For those people still have their voice can use this system to control
movement of the wheelchair. In this project, the software of Visual Basic 6 and SDK
5.1 will be used as an application to receive the voice input from user which is a user
can instruct the wheelchair by using a microphone to give a command to control the
movement of the wheelchair to any desire direction which is forward, backward, left
and right. The dc motor will be used to move the wheelchair and PIC16F877A will be
as a controller of the motor driver MDD10A.
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1.6 Methodology
Methodology is the process used to collect information and data for the making
purpose of making decision. The methodology may include understand the problem,
research of information and data, design, decision and test and analysis. Figure 1.2
below shows the flowchart of methodology of this project.
Figure 1.2: Flowchart of project
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This chapter includes the background study regarding voice recognition concept
from journal and related previous projects and thesis. It also discusses on the
component that have been research to use in this project.
2.1 Introduction
To start build this project, some research and collecting information had been
done. The information is collected from many sources such as books, journals, forum
and website. All this collected information were recorded and been discuss with
lecturer, students and public to collect and choose the best information and idea. All
information is very important and useful as a guide to build this project. All research
and studies is related to the topic such as type of component used, hardware and
software that used for this project.
2.2 Wheelchair History
It has been said that “necessity is the mother of all invention”, at some point in
human history something has been created to help disabled people to move from one
point to another point with some relaxation. From Erin Florence (2012) thus the
invention of the wheelchair sprung forth. Table 2.1 show the chronology of the
LITERATURE REVIEW
CHAPTER 2