Real Time Automatic Speed Control Unit for Vehicles

Most of the prevailing system to control vehicle speed has a fixed speed control mechanism, which is not sufficient in places of high alert. The objective of this paper is to reduce the speed of the vehicle automatically in comparison with the maximum permissible speed limit of particular location. The Real Time Automatic Speed Control Unit we proposed is highly driver friendly and the mechanical systems do not lose their functional integrity. The controlling part incorporated in this system fully avoids any kind of human intervention, and integrating both mechanical and electronic systems. In this prototype, the zonal position and the associated maximum speed limit is collected using mobile GPS. The algorithm incorporated continuously monitors and compares the speed raised by manual acceleration and the maximum permissible speed of the particular location. Based on this, the speed of the motor is brought down to the speed limit assigned to that particular zone. The hardware complexity of the prototype presented in this paper is less since the speed of the vehicle motor is measured using an IR sensor and controlled electronically through PWM technique. LabView simulation software is used for developing virtual model of the system that enables embedding the prototype model directly on the vehicle. For testing, the prototype modeling was developed on Arduino board.