WIRELESS DC MOTOR SPEED AND DIRECTION CONTROL USING GSM

Abstract : “GSM Based DC Motor Speed Control” 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 control 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 equipments via the mobile phone set by sending commands in the form of SMS messages and receiving the appliances status. The main concept behind the project is receiving the sent SMS and processing it further as required to perform several operations. The type of the operation to be performed depends on the nature of the SMS sent. The principle in which the project is based is fairly simple. First, the sent SMS is stored and polled from the receiver mobile station and then the required control signal is generated and sent to the intermediate hardware that we have designed according to the command received in form of the sent message. We have selected Android mobile device for our project. The messages are sent from the mobile set that contain commands in written 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. SMS (Short Message Service): It is a service available on most digital mobile phones that permit the sending of short messages (also known as text messaging service).
 EXISTING SYSTEM :
 . Cellular Networks: The widely available networks are based on GSM. This network provides wide area coverage and can be utilized more cost-effectively for this project. b. Communication Protocols: The available communication protocol that we have used is SMS. The SMS is the most efficient because this project requires a cellular communication and limited data to be sent. c. I/O interfaces between microcontroller and devices: Serial I/O is considered as options for connection between the GSM receiver and the microcontroller. Using the microcontroller, a control circuit will be implemented to control the electrical appliances.
 DISADVANTAGE :
 a. The receiver must reside in a location where a signal with sufficient strength can be received from a cellular phone network. b. Only devices with electrical controlling input ports will be possible targets for control. c. Operation of the controlling unit is only possible through a cell phone with SMS messaging capabilities. d. The Controlling unit must be able to receive and decode SMS messages.
 PROPOSED SYSTEM :
 The project “GSM Based DC Motor Speed Control” at 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 defined as; a. To co-ordinate appliances and other devices through Short Message Service (SMS). b. To effectively receive and transmit data via SMS c. To eliminate the need of being physically present in any location for tasks involving the operation of appliances within a household/office. d. Minimize power and time wastage
 ADVANTAGE :
 . The future implications of the project are very great considering the amount of time and resources it saves. The project we have undertaken can be used as a reference or as a base for realizing a scheme to be implemented in other projects of greater level such as weather forecasting, temperature updates, device synchronization, etc.

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