HARDWARE DESCRIPTIONS

BLOCK DIAGRAM

Working Procedure
  1. Switch on the power supply.
  2. This project uses two power supplies; one is regulated 5V for modules.
  3. 7805 three terminal voltage regulator is used for voltage regulation.
  4. 7812 three terminal voltage regulator is used for operating DC motor through relay.
  5. Bridge type full wave rectifier is used to rectify the ac output of secondary of 230/12V step down transformer.
  6. Here we are using AT89S52 controller as a control unit.
  7. We are using a pair if IR transmitter, receiver pair to track the particular school zone and automatically reduce the vehicle speeds.
  8.  This information will be displayed on 16X2 LCD.
  9.  At each and every speed limiting zone it is placed with IR transmitter and vehicle consists of a receiver to track and automatically reduce the speed limit in vehicles.
  10.  Once it crosses the particular area automatically it gains normal speed. We are using a DC motor for symbolic representation of vehicle.