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CHAPTER ONE
1.0 GENERAL OVERVIEW
1.1 INTRODUCTION
An expert system is a computer system that emulates the decision-making ability of a human expert. Expert systems are designed to solve complex problems by reasoning through bodies of knowledge. The use of computer in this dispensation cannot be over emphasized. Higher companies now use computer for identifying, keeping records of each component for easy retrieval and for future use. The computers high processing speed, degree of accuracy in data processing and large storage has made it more vulnerably used in the society today. This project deals with the design of expert system for identifying ceiling fan and standing fan problems. The project is motivated by the need to guide technician and learners on how to detect problems of ceiling fan and standing fan. The procedure for identifying ceiling fan and standing fan follows a manual workshop technique. As a result of the problems associated with manual process, such as waste of time makes the transformation of the system from manual processing to an expert system with the aid of a computer.
Expert assistance is then required, increasing both the time and cost required to determine and repair the fault. The design of DART reflects the expert’s ability to take a systemic viewpoint on problems and to use that viewpoint to indict specific components, thus making more effective use of the existing maintenance capabilities.
For the initial design, we chose to concentrate on problems occurring within the teleprocessing (TP) subsystems for the IBM 370-class computers. This subsystem includes various network controllers, terminals, remote-job entry facilities, modems, and several software access methods. In addition to these well-defined components there are numerous available test points the program can use during diagnosis. We have focused our effort on handling two of the most frequent TP problems, when a user is unable to log on to the system from a remote terminal, and when the system operator is unable to initialize the TP network itself. In a new system configuration, these two problems constitute a significant percentage of service calls received.
1.2 STATEMENT OF PROBLEMS
The current manual system used in this process is very well not convenience some lapses still exist in its. These lapses includes: –
- Attitude of some technicians toward identifying ceiling fan and standing fan problems are not encouraging due to most of technician nowadays are not trustable.
- Identifying faults in ceiling fan and standing fan sometimes result is generating another fault as a result of incomplete of some technicians.
- The large amount of money charged by technicians does not encourage repairs, of some ceiling fan and standing fan while the users will decide to keep their electrical appliances e.g ceiling fan and standing fan instead of repairing them.
- Due to manual system of operation, some technicians are not current about the new technologies spare part and have problems repairing them.
- To reduce the time taken in identifying ceiling fan and standing fan problem.
- To reduce the human labor when it comes to identifying some problems in ceiling fan and standing fan.
1.3 AIMS AND OBJECTIVES
To develop an expert system for identifying ceiling fan and standing fan problem that is capable of assisting owners in dealing with their problems and identifying them whenever time is limited and the human experts, also known as technician is not available at that very time. The system will perform the following functions:
- It will conclude its diagnosis based on answers of the users to specific question posed by the system to the user.
- It provides facility in order to take the user opinion on the following: does the user agree with the system’s diagnosis? Does the user disagree with the system’s identifying?
- It provides explanation, picture, why and fact facility.
- It stores the facts and the conclusion of the inference of the system and the facts and the conclusion of the inference of the user, for each case in data base.
- It processes the database in order to extract rules, which complete the knowledge base.
1.4 SCOPE AND LIMITATION
The expert system may contain certain limits and flaws, as it is only a prototype. We commonly know that ceiling fan and standing fan problem has many parts on its body and even in the body itself. However, the system will only deal with problems that are normally or commonly found in the ceiling fan and standing fan such as,coil e.t.c,
LIMITATIONS
The limitation of the study is basically on troubleshooting of ceiling fan and standing fan problems and possible solution on how to repair ceiling fan and standing fan with the use of computer application.
1.5 SIGNIFICANCE OF THE STUDY
The proposed system can help inexperienced technician in troubleshooting the fault of the ceiling fan and standing fan.
In addition, the system has the following benefits:
- Expert systems help in the improvement of productivity: Having this system will enable technician to do more work in less time.
- Expert system reduces the need for skilled technician: The repairs of ceiling fan and standing fan require a high level of expertise. With this system, inexperienced technician can be guided to find the fault.
- Expert systems capture the knowledge of company experts who someday will retire, resign or die.
- Expert systems train newly lived employees to solve problem the way experienced professionals do.
- Expert system are not vulnerable to problems such as fatigue, emotion and overwork, all of which plaque human experts.
- Expert systems place expert knowledge into machine readable form, where it can be summoned at any time.
- Expert systems give consistent result.
- Expert systems can complete some tasks quicker them a human.
1.6 DEFINITIONOF TERM
DIAGNOSIS: The identifying of the nature or cause of something, especially a problem or fault.
REPAIRS: To restore something broken or damaged to good condition
WEB-BASED:
COMPONENTS: These are refer to computer parts like RAM, CD-ROM, HDD etc
TECHNICIAN: Somebody who is skilled in industrial techniques or the practical application of a science
ENGINEER: Somebody who is trained as a professional engineer.
SOLUTION:A method of successfully dealing with a problem or difficulty.
TROUBLESHOOTING: Process of finding solution to a problem
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