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
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.
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