06-04-2010, 11:32 PM
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SMS BASED DEVICE CONTROL
This project is designed with an idea to use the mobile hand set as a long distance remote controller. The mobile sets are now a days used most widely and very commonly. The SMS can be send to any mobile user of any service provider with no or a minimum charge. This system is designed using a GSM modem. The GSM modem is configured as a receiver which send the SMS to a computer after receiving it completely. The SMS sent by the user is written in a particular format. The computer receive the message and decode it and identify the task to be done. Accordingly The computer send one code to the microcontroller and the controller perform the task. In this way the devices connected to the controller is operated through an SMS.
The advantage of SMS based control is as follows,
1. This is cheaper and the SMS can be retained in the network even though the network is busy for some time.
2. The SMS can be written through internet with out any cost.
The present scenario of technological advancement and research is stepping forward towards the high speed and long distance data communication. The Mobile and cellular technology is one of the reliable and advanced media for the data communication. The information technology makes mobile communication more popular and economical. The science and technology is moving with fast pace towards long distance communication and data transmission. The advancement in long distance communication essentially can create a global village. This project is conceptually based on long distance data communication and control. In the present scenario the application of mobiles are very much common, almost every one is using a mobile for their day to day affairs. The mobile networks are covering globally. The idea to use the mobile as a remote control device is definitely a innovative and widely accepted concept. The mobile set as a remote control can cover wide area compare to any other remote control devices. The IR remote controller and RF remote controllers have its limitation on its range where as the mobile based remote controllers can have a global range using wireless cellular network. In this project an attempt is made to control the electrical appliances globally by using the cellular network. The SMS technique is inexpensive and more reliable as the data transfer is in text based. In most of the network the SMS facility is inexpensive or free. This concept of control system is very much use full for industrial and consumer application. This type of applications can be used in industries for controlling devices also the user can get field information and data through GSM modem in the format of SMS etc. In the consumer sector this application can be used to operate air condition machines, rice cooker and washing machines etc. These machines can be operated by sending a SMS to the GSM Modem. This system is designed with a 8 bit microcontroller from 8051 family. AS this design is an embedded system all the advantage of embedded system can achieved in this system. The SMS based appliance controller is conceptual step towards realization of Global village.
