IMPLEMENTATION OF SPEED LIMIT ON A VEHICLE

The main objective of the paper is to provide a risk free journey for the vehicle drivers and also to the pedestrians by controlling the speed of the vehicles using radio frequency signal. To be more lucid, this paper is mainly built in order to prevent the people from breaking government laws and rules by forcing the vehicle to drive in the specified speed. This paper combines the concept of Wireless networking and Instrumentation Control engineering. Radio frequencies are used in order ensure that all vehicles are controlled using this method. Microcontrollers are used for comparing the set point and the actual speed of the motor. The sign boards acts as a radio frequency transmitter and the Vehicle acts as the receiver. The set point (accumulator) is assigned to the microcontroller which is placed inside the vehicle and the current speed of the vehicle is assigned as actual value (base register)to the microcontroller. The logic of this program is that if the current value exceeds the set point, then the speed of the vehicle is automatically controlled with the help of motor driver. A liquid crystal display is used in order to display the number of rotation of the motor before and after receiving the Radio frequency. Instead of coding every sign board to emit a particular radio frequency signal, a server is placed which sends the radio frequency to the sign boards. Thus the sign board acts both as transmitter and receiver. The server is coded in such a way that it is capable of broadcasting radio frequency at a particular frequency.Â