Design And Implementation Of GSM Based Remote Switching System

Computer Science Project Material with Source Code Included

Computer Science Project Material with Source Code Included

Chapter One


1.1 Background of Study

Has technology transformed humankind into omniscient being? Years back, communication was done through difficult means like travelling to the destination of the second party, posting letters est. Today people can communicate easily through various means like e-mailing, face booking, GSM etc. The new age of technology has redefined communication, mostpeople nowadays have access to mobile phones and thus the world indeed has become a global village. At any given moment, any particular individual can be contacted with the mobile phone. But application of mobile phones cannot be restricted to sending SMS or starting conversation. New innovation and ideas can be generated from it that can further enhance its capabilities. Technologies such as infra-red, Bluetooth etc which has developed in recent years goes to show the very fact that improvement are infact possible and those improvement have eased our life and the way we live. Remote management of several home and offices appliances is a subject of growing interest and in recent years we have seen many systems providing such controls.

These days, apart from supporting voice calls, a mobile phone can be used to send text message as well as multimedia message (that may contain pictures, graphics, animation, etc). Sending written text messages is very popular among mobile phone users. Instant messaging as it is known, allows an individual to share ideas, opinions and other relevant information. I have used this to design a system that allows a platform to receive calls which infact are commands sent to control different appliances and device connected to the platform. The design of this control system system is based on the GSM technology that effectively allows control from a remote area to the desired location. The application of the suggested system is immense in the ever changing technological world. It allows a greater degree of freedom to an individual whether it is controlling the household appliances or office equipments. The need to be physically presenting order to control appliances of a certain location eliminated with the use of this system.

The research is borne out of the need for man to control electrical devices that are remotely located to him. Anything from home devices such as alarms, heaters, air conditioner and so on, IT equipment such as routers and servers can be controlled.

The desire for man to control an object that is remotely located to him has been for many ages. However, the technology that meets the perfect desire in this respect has not been obtained, though there is increasing improvement in technology that struggles to meet this need in terms of accuracy, speed, ease of operation and limitless operation point. The introduction of the global system for mobile communication (GSM) and particularly the use of hand-held mobile phones brought the innovation of distance communication at remote location. Based on this, research utilizes this facility for remote control of systems and appliances, take for instance, a man on a journey inside his car suddenly remembers that he left the air conditioner (AC) ON when it was supposed to be OFF.

The normal condition is to drive back and switch OFF. But with the GSM mobile phone in the hand, one looks on how the same could be used to effect control at any point and time.

1.2 Statement of Problem

Technology has advanced so much in the last decade or two that it has made life more efficient and comfortable. The comfort of being able to take control of devices from one particular location has become imperative (i.e. important) as it saves a lot of time and effort. Therefore there arises a need todo so in a systematic manner which will be implemented in the proposed system. The system is an extended approach to automating a control system.

With the advancement and breakthrough in technology over the years, the lives of people have become busier than before. With the adoption of this system, we can gain control over certain things that require constant attention. The application of this system comes in handy when people who forget to do simple things such as turn ON or OFF devices at their homes or at their offices. They can now d so without their presence by the transmission of a simple call from their mobile phone. This development, I believe will ultimately save a lot of time especially when people do not have to come back for simple things such as to turn ON or OFF at their homes or at their office once they set out for their respective work or appointment.

1.3 Project Aims and objectives

The project “GSM control system” as the title suggests is aimed to construct a control system that enables the complete control of the interface on which it is based.

General objectives of the project are :

  1. To co-ordinate appliances and other devices through calls.
  2. To effectively receive and transmit data via calls.
  3. To eliminate the need of being physically present in any location for tasks involving the operation of appliances with household/office.
  4. Minimize power and time wastage.
  5. It allows a great degree of freedom to an individual.

1.4 Justification of Study

  1. The proposed project can be used as a reference or as a base of realizing a scheme to be implemented in other project of greater level such as device synchronization, temperature updates, weather forecasting etc.
  2. The project itself can be modified to achieve a complete home automation system which will then create a platform for the user to interface between himself and the household.
  3. It can be used by companies for management purpose example is switching ON/OFF the server in other to manage the bandwidth.

1.5 Scope of the Study

The project covers the aspect of just being able to switch ON/OFF any electrical appliance connected to the circuit.

1.6 Project Report Organization

The project is designed to have five chapters, which will explain in details the various aspects of system. The first chapter gives an introduction to GSM control system along with the project aims and objectives, with emphasis to the scope in order to achieve the desired goal and limitations to the study.

Chapter two is on literature review which contains a review of previously implemented systems.

Chapter three contains the details of the entire major component that were used in the actualization of the hardware part of the project.

Chapter four deals with the implementation and the testing, the chapter contains the major work of the project.

Chapter five summarizes and concludes the project work on GSM – Based Remote switching system. Recommendations are also stated.

Chapter Five

Summary, Recommendations and Conclusion


5.1 Summary of Findings

The design of this remote control system using GSM phone involves researches in different aspects of Electrical/Electronic Engineering. This includes power electronics, differential amplifier, telecommunication, digital electronics and software engineering. Thorough work was done in all these aspects of engineering before the work could be concluded. the project is a clear indication of a multipurpose control done via the keypad tone reducing the manual efforts and time required while paying individual attention for controlling each device. For people who want to switch ON/OFF and check status of device when they are not present. This research work saves time and energy of the individual. The system requires less design and implementation cost. For handicapped people, it may be really not entertaining to involve much in work and this system helps them to locate themselves in a place and operate the lights of their room, switch on the fan etc. in every aspect of our daily lives people ranging from scientist to handymen and farmers can make use of this system for controlling electric motor, sprinklers ,tanks and also several other devices making use of electricity.

5.2 Limitation of Study

The project has certain limitations and a list of such includes:

  1. The receiver must reside in a location where a signal with sufficient strength can be received from a cellular phone network.
  2. Only devices with electrical controlling input ports will be possible targets for control.
  3. The controlling unit must be able to receive and decode calls.
  4. Operation of the controlling unit is only possible through a cell phone with calls capabilities.

5.3 Recommendation

A good practicing engineer should be up-to-date in terms of theory and practice.

Very good theoretical knowledge should be backed up with a practical design knowledge in order to cement what was taught in the lectures.

In other words, to meet up with the technological demands of the country, Engineering Faculties in Universities and other technological institutes should consider and adopt the following recommendation:

  1. Practical designs should be part of any course taught in the education and training.
  2. Each department in the engineering faculties should have its own library that is well stocked with old and current books as well as an Internet facility.
  3. Project show-rooms should be provided for the exhibition of previous projects as this will in a very great way, act as a source of encouragement and challenge to the junior students.
  4. The standard of projects should be reviewed so as to keep up with technological trends.
  5. All the probable project topics should be given to the students at the end of their 4th year for early preparation and development. This will also give the student enough time to do thorough research and produce a standard project.
  6. Students should be given practicable projects with obtainable system components.
  7. Lastly, the design is best implemented using a printed circuit board (PCB) technology for the circuit layout to produce a neat arrangement of components.

5.4 BEME (Bill of Engineering Measurement of Engineering)

…table available in the complete material

5.5 Conclusion

This design and construction of a remote system using GSM network was carried out considering some factors, which includes availability of components, cost effectiveness of design, economic application, research materials, efficiency, portability and finally its durability. The system after completion and normal test met the expected design specification and performance. But misuse of the system by end users may probably lead to lapses in the system performance. The system was designed and constructed in such a way that maintenance and repairs are easily done in the case of faults. Soldering techniques and practical electronic were carefully studied and the experience gain from it was instrumental to the success of this project.

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