Wireless Industrial Machine Speed Control using GSM

Abstract

In many industry such as paper mills, rolling mills, printing machine machine tools, excavators and cranes etc the dc motor is used for waying a product from one place to another on the conveyer belt . So due to these the speed and direction control of the dc motor is very important. purpose. Motor speed controller is to take a signal representing the required speed and to drive a motor at that speed For that purpose wireless speed and direction control of dc motor by radio frequency technique is very crucial with pulse width modulation and H-Bridge converter. The microcontroller is used to control the dc motor speed and Transistorised h-bridge converter is used for direction control. By adjusting the duty cycle of pulse from Pulse Width Modulation technique simultaneously the terminal voltage of motor is change and hence speed will be vary with terminal voltage. H-Bridge is a DC to DC converter used for direction and made by 4 transistor switch across it a diode are connected. This system is designed to bring convenience to the user to control the motor speed from anywhere by using SMS application.