The project aims in designing an efficient automatic speed control of cars using RF wireless communication at the specified zones like hospitals, schools, accidental places etc. Now a day's every system is automated in order to face new challenges. In the present days Automated systems have fewer manual operations, flexibility, reliability and accurate. Due to this demand every field prefers automated control systems. Especially in the field of electronics automated systems are giving good performance. The modules in the project are: RF transmitter and receiver modules for establishing wireless communication, DC motors for the robot movement. Zone section consists of RF transmitter with battery power. Another section is with the vehicle (robot) which consists of microcontroller interfaced with DC motors and RF receiver module. The RF receiver gets the data relating to entry into slow speed zone and feds this to microcontroller. Microcontroller acts on the vehicle motors to reduce the speed of the vehicle. The Microcontrollers used in both sections are loaded with an intelligent program written using embedded ‘C’ language.  

The objectives of the project include:  

1. Automatic speed control of vehicles when they enter in Speed control Zones like schools, hospitals etc..,

  The major building blocks of this project are:  

1. Regulated Power Supply.
2. RF Transmitter.
3. RF Receiver.
4. PIC Micro Controller.
5. Crystal
6. Reset.
7. LED indicators.
8. DC motors 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:

   

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