DESIGN AND IMPLEMENTATION OF AN EXPERT MANAGEMENT SYSTEM FOR AUTOMOBILE FAULT DETECTION.

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ABSTRACT

This project deals with the design and implementation of an expert system for car faults diagnosis. The project is motivated by the need to guide car owners and learners motor mechanics in the maintenance and trouble shooting of motor problems without having to resort to presumptions and conjectures. Particularly, it is expected that the proposed design would ensure that car owners have proper assistance in times of crisis and what’s more will save them from the clutches of exploitative roadside mechanics. For this purpose a rule- base artificial intelligence (AI) technique was utilized to obtain theoretical and practical expert system parameters, and then a conceptual expert system was designed. The expert system functioning is based on the database of car faults, symptoms and their correction, which make up its knowledge base. The new system was developed using visual basic 6.0 programming language and access database. This language was chosen because of its easy syntax and features for developing windows based application.

TABLE OF CONTENTS

Title page

Approval page ii

Dedication iii

Acknowledgement iv

Abstract v

Table of contents vi

CHAPTER ONE

1.0 Introduction 1

1.1 Background of the study 1

1.2 Problem statement 2

1.3 Objectives 3

1.4 Significance of the study 4

1.5 Scope of the study 5

1.6 Limitations 5

1.7 Methodology 5

CHAPTER TWO

2.1 Literature review 7

2.2 The Conceptual Structure of an Expert System 14

2.2.1 Problem Assessment 14

2.2.2 Knowledge Acquisition 15

2.2.3 Knowledge Representation 17

2.2.4 Verification 18

2.2.5 Validation 18

2.3 Testing Expert System 19

2.4 MYCIN 21

CHAPTER THREE

System analysis and design 27

3.0 Introduction 26

3.1 Weakness of the Present System 28

3.2 Methodology 28

3.3 Knowledge acquisition 28

3.3.1 Domain Expert 29

3.3.2 Interview 29

3.3.3 Consultation 29

3.3.4 Diagnosis 32

3.3.5 Correction/ explanation 32

3.4 System Design 33

3.4.1 Rule based development method 34

3.4.2 Inference technique 36

3.4.3 Flowchart of the proposed program 38

3.5 Program design 39

3.5.1 High level model of the proposed system 40

CHAPTER FOUR

4.0 System implementation 41

4.1 Introduction 41

4.2 System requirement 42

4.3 Testing 42

4.4 Maintenance 43

4.5 Program Documentation 44

4.5.1 Sample input/output data formats 45

4.5.2 Loading the package 46

4.5.3 Exiting 47

CHAPTER FIVE

5.0 Summary, Recommendation and conclusion 48

5.1 Summary 48

5.2 Recommendation 49

5.3 Conclusion 49

References 66

Appendix I 75

Appendix II 58

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DESIGN AND IMPLEMENTATION OF AN EXPERT MANAGEMENT SYSTEM FOR AUTOMOBILE FAULT DETECTION.

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