Gsm Based Control System

Topics: Capacitor, GSM, Mobile phone Pages: 54 (8961 words) Published: November 4, 2012
1.1 Introduction of Project
―GSM based Control System‖ implements the emerging applications of the GSM technology. Using GSM networks, a control system has been proposed that will act as an embedded system which can monitor and contr ol appliances and other devices locally using built-in input and output peripherals. Remotely the system allows the user to effectively monitor and control the house/office appliances and equipment via the mobile phone set by sending commands in the form o f DTMF TONE. The main concept behind the project is receiving the CALL and a fix DTMF TONE and processing it further as required to perform several operations. The type of the operation to be performed d epends on the key pressed. The principle in which the project is based is fairly simple. First ly, the DTMF TONE is sent via the mobile keypad and then it is decoded through a decoder and sent to the intermediate hardware that we have designed according to the command received in form of the DTMF TONE.

The DTMF TONE is sent from the mobile set that contains commands in DTMF form which are then processed accordingly to perform the required task. A microcontroller based system has been proposed for our project. There are several terminologies that are used extensively throughout this project report. GSM (Global System for Mobile Communications): It is a cellular communication standard.

1.2 Background
The new age of technology has redefined communication. Most people 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 the application of mobile phone cannot just be restricted to sending SMS or starting conversations. New innovations 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 improvements are in fact possible and these improvements have eased our life and the way we live. Remote management of several home and office appliances is a subject of growing interest and in recent years we have seen many systems providing such controls. We have designed a control system which is based on the GSM technology that effectively allows control from a remote area to the desired location. 1

The application of our 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 present in order to control appliances of a certain location is eliminated with the use of our system.

1.3 Problem Statement
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 as it saves a lot of time and effort. Therefore there arises a need to do so in a systematic manner which we have tried to implement with our system. The system we have proposed is an extended approach to automating a control system. With the advancement and breakthroughs in technology over the years, the lives of people have become more complicated and thus they have become busier than before. With the adoption of our system, we can gain control over certain things that required constant attention. The application of our system comes in handy when people who forget to do simple things such as turn ON or OFF devices at their home or in their office, they can now do so without their presence by the trans mission of a simple call from their mobile phone. This development, we believe, will ultimately save a lot of time especially when people don‘t have to come back for simple things such as to turn ON/OFF switches at their home or at their office once they set out for their respective...
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