The project aims in designing an efficient automatic wireless vehicle speed control in low speed zones using and RF communication.   The advent of new high-speed technology and the growing computer Capacity provided realistic opportunity for new robot controls and realization of new methods of control theory. This technical improvement together with the need for high performance robots created faster, more accurate and more intelligent robots using new robots control devices, new drivers and advanced control algorithms.   The modules in the project are: RF transmitter and receiver modules for establishing wireless communication, DC motors for the vehicle movement controller.   The controlling device of the whole system is a Microcontroller to which RF receiver module; DC motors are interfaced through a motor driver. Whenever the vehicle enters into a low speed zone, the data from RF transmitter of low speed zone will be received by the vehicle system. The Microcontroller in the vehicle system automatically slows down the speed to the speed limit of that zone.   The Microcontroller checks the data with the program embedded in it and performs appropriate actions on the electric motors. The Microcontroller is programmed using Embedded C language.  

The objectives of the project include:  

1. Automatic speed control of vehicles in smart zones.
2. Wireless transmission using RF.

The project focuses on the following advancements:  

1. RF transmission and reception.
2. Interfacing of RF transmitter and receiver to Microcontroller.
3. Embedded C programming.
4. PCB designing.

  The major building blocks of this project are:  

1. Regulated Power Supply
2. RF Transmitter
3. RF Receiver
4. Micro Controller
5. LCD
6. Ultrasonic sensor.
7. Crystal
8. Reset
9. LED indicators
10. DC motor with driver

  Software’s used:  

1. PIC-C compiler for Embedded C programming.
2. PIC kit 2 programmer for dumping code into Micro controller.
3. Express SCH for Circuit design..

       

Block diagram:

video: